Title of Invention	A CYLINDRICAL BLOW-MOULDED BARREL WITH A LID
Abstract	A cylindrical blow-moulded barrel with a lid and a clamping-ring closure, in which the upper arm of the clamping ring closure of U-shaped cross-section engages in the closed state over the outer lid rim and the lower arm thereof engages in a recess In the upper barrel wall closely below the upper banrel rim, or engages under a ban'el edge extending substantially horizontally or an abutment face extending slightly obliquely and forming the upper boundary of the recess, the outline of the upper boundary extends outwards in a substantially conical manner downwards towards the transition into the completely cylindrical part of the barrel wall. The ban-el is characterized by immediately behind the lid rim which is overiapped by the upper arm of the clamping ring closure, the barrel lid is provided with a continuous, substantially V-shaped engaging groove reduced downwards into the barrel body with a fiat bottom between a central lid disc of reduced diameter and the lid rim. the inner boundary of the engaging groove is formed by a ring part which extends obliquely upwards in a conical manner and to which the flat lid disc Is attached, the outline of the recess extends outwards in a substantially flat-conical manner downwards towards the transition into the completely cylindrical part of the ban'el wall, wherein the transition from the conical area into the completely cylindrical part of the barrel body is situated at a distance of from 80 mm to 140 mm, preferably about 120 mm, from the upper front edge of the rim of the barrel mouth, and wherein the upper rim of the ban'el mouth is made solid as an abutment and a sealing face for the lid seal and has a width of at least double the wall thickness of the barrel body, wherein a continuous flange rim with a radial extension of from about 3 to 5 mm is additionally formed on the outside of the barrel rim, as a result of which the width of the horizontal abutment face is enlarged for the lower ann of the clamping ring.

Title of Invention

A CYLINDRICAL BLOW-MOULDED BARREL WITH A LID

Abstract

A cylindrical blow-moulded barrel with a lid and a clamping-ring closure, in which the upper arm of the clamping ring closure of U-shaped cross-section engages in the closed state over the outer lid rim and the lower arm thereof engages in a recess In the upper barrel wall closely below the upper banrel rim, or engages under a ban'el edge extending substantially horizontally or an abutment face extending slightly obliquely and forming the upper boundary of the recess, the outline of the upper boundary extends outwards in a substantially conical manner downwards towards the transition into the completely cylindrical part of the barrel wall. The ban-el is characterized by immediately behind the lid rim which is overiapped by the upper arm of the clamping ring closure, the barrel lid is provided with a continuous, substantially V-shaped engaging groove reduced downwards into the barrel body with a fiat bottom between a central lid disc of reduced diameter and the lid rim. the inner boundary of the engaging groove is formed by a ring part which extends obliquely upwards in a conical manner and to which the flat lid disc Is attached, the outline of the recess extends outwards in a substantially flat-conical manner downwards towards the transition into the completely cylindrical part of the ban'el wall, wherein the transition from the conical area into the completely cylindrical part of the barrel body is situated at a distance of from 80 mm to 140 mm, preferably about 120 mm, from the upper front edge of the rim of the barrel mouth, and wherein the upper rim of the ban'el mouth is made solid as an abutment and a sealing face for the lid seal and has a width of at least double the wall thickness of the barrel body, wherein a continuous flange rim with a radial extension of from about 3 to 5 mm is additionally formed on the outside of the barrel rim, as a result of which the width of the horizontal abutment face is enlarged for the lower ann of the clamping ring.

Full Text	This invention relates to a cylindrical/ blow-moldedi lidded barrel - wide-wouthed drum with a barrel lid and tension-ring closure, in which in the closed position, the tension ring, which is U-shaped in cross section, engages with its upper leg over the outside upper ^dge of the lid and engages with its lower leg under an outside edge of the barrel that runs basically horizontally or slightly obliquely downward in the opening area of the body of the barrel. Such a lidded barrel is Icnown from, e.g., D£'-B-41 08 606. In the case of this barrel, however, the tension-ring closure is arranged some distance below the upper edge of the lid or the opening of the barrel, so that handling such a filled, e.g., 220-liter lidded barrel with a shipping weight of about 230 kg is possible only lising special barrel-gripping tools. This type of a iiaaed barrel was developed by Mauser in 1975 and distributed worldwide under the designation "standard lidded barrel"; it is well-suited for handling solid, particulate or pasty contents, but such a barrel is not readily suited for use with liquids. In the case of lidded barrels, the sealing action of the barrel lid on the barrel mouth is produced by bringing about axial prestressing on the lid seal via the tension ring leg bevels at the upper edge of the lid and at the outer border of the barrel body (or indentation) as the tension ring is clamped or closed. or = closure rinC on lidded barrels that are approved for use in^ &.g., the chemical industry, certain requirements with respect to their storage and transport safety are set; conpliance vim these reguiretnents is tested and examined in special acceptance tests * or side wall dropping (e.g., dropping on its side «= jac)cet dropping, diagonal dropping on the edge of the lid, static internal pressure test, i.a.)« In the case of Xnown existing plastic lidded barrels, even when barrels are dropped from heights of about 1.20 n — e.g., froa the bed of a truck — leaks occur, especially in the case of liquids, or complete detachment of the barrel lid can even occur. The drawbacks of previously known lidded barrels consist of, especially. a) when there is axial internal pressure on the barrel lid [surge pressure when a barrel filled with water is dropped on its jacket or when there is hydraulic internal pressure in a closed izucrel), b) when a closed barrel that is fillert with water alar:: flat gainst a side wall (jacket dropping), and c) when a closed barrel that is filled with water drops iagonally onto the edge of the lid, various reactions occur: the barrel lid is pressed axially outward, the tension ring is pulled axially outward, the tension ring (together with lid and barrel mouth rea) is flattened »t ths central Ijupact point, the tension ring is heavily buckled laterally at the npact point and its u-shape is flared at both buckling points, . — cne lid edge tries to slide out from under the upper tension ring leg, prestressing on the seal ie reduced and the locking syeteai begins leaking. The stresses that occur with the deformations must be absorbed in each case by the U-shaped tension ring. In this connection, the legs are pressed outward (flared) in the buckling areas, if the(Stress on the legs is too high, it leads to permanent deformations, prestressing on the seal is reduced at those points, and significant flaring results in leaks or leeiking of the barrel. An attempt is thus to be made to reduce the defornation of the tension ring, especially the flaring in the U-area, by structural measures, especially in the barrel mouth area, at the barrel lid and/or tension ring, while at the same tiroe continuing to ensiure good handling, i.e., easy closing of the tension ring. The object of this invention is to made of plastic with a barrel lid and tension-ring closure which, owing to the special way in which the individual components are matched to one another, makes it possible to use the same barrel-gripping tool (parrot's beak) or which, in the filled state, can be manipulated with the same barrel-gripping tool, as usually used universally for modern plastic L-ring bung barrels or normal steel-bung barrele. In this case, the lidded barrel is to be especially suitable for using liquids, i.e., it remains liquidtight even when it falls or is dropped from considereible heights. Accordingly the present invention provides a cylindrical blow-moulded barrel with a lid and a clamping-ring closure, in which the upper arm of the clamping ring closure of U-shaped cross-section engages in the closed state over the outer lid rim and the lower arm thereof engages in a recess in the upper barrel wall closely below the upper barrel rim, or engages under a barrel edge extending substantially horizontally or an abutment face extending slightly obliquely and forming the upper boundary of the recess, the outline of which extends outwards in a substantially conical manner downwards towards the transition into the completely cylindrical part of the barrel wall, wherein the over-lapped outer lid rim has a U-shape open at tiie bottom as viewed in cross-section, into which a lid seal is inserted or set in foam which comes to rest in a sealed manner against a slightly enlarged rim of the barrel mouth, wherein at least one bunghole opening sunk laterally into a bung casing is optionally provided in the barrel lid, characterized in that immediately behind the lid rim which is overlapped by tiie upper arm of the clamping ring closure, the barrel lid is provided with a continuous, substantially V-shaped engaging groove reduced downwards into the barrel body with a flat bottom between a central lid disc of reduced diameter and the lid rim, the inner boundary of the engaging groove is formed by a ring part which extends obliquely upwards in a conical manner and to which the flat lid disc is attached, the outline of the recess extends outwards in a substantially flat-conical manner downwards towards the transition into the completely cylindrical part of the barrel wall, wherein the transition from the conical area into the completely cylindrical part of the barrel body is situated at a distance of from 80 mm to 140 mm, preferably about 120 mm. from the upper front edge of the rim of the barrel mouth, and wherein the upper rim of the barrel mouth is made solid as an abutment and a seahng face for the lid seal and has a width (thickness) of at least double the wall thickness of the barrel body, wherein a continuous flange rim with a radial extension of from about 3 to 5 mm is additionally formed on the outside of the barrel rim, as a result of which the width of the horizontal abutment face is enlarged for the lower arm of the clamping ring. This special design of the upper outer area of the lidded barrel according to the invention makes it possible, on the one hand, to use or apply barrel-gripping tools that are generally employed for bung barrels; on the other hand, the lidded barrel according to the invention also has considerably improved liquid sealing properties in the case where it is filled with Hquid, e.g., in the case where barrels are dropped from considerable heights (about 1.8 m) or in the case of the previously described acceptance tests. In a variant embodiment of the invention, it is provided that the conical outline of the barrel wall inside the indentation below the horizontal attachment surface for the lower leg of the tension-ring closure be made at an acute angle of between 15° and 30° preferably about 18° to 20°, at the transition in the frilly cylindrical part of the barrel body to the longitudinal axis of the barrel. As a result, the barrel-gripping device can, as usual, be brought in first against the cylindrical barrel body in the usual way and then To ensxire a. secure fit of the lower tension-ring leg as well as the barrel-gripping claw that is applied thereto, it is provided according to the invention that the radial depth of the indantation, jneasured by the extension line of the fully cylindrical part of the barrel body, be between 12 sun and 25 ma, preferably about 17 nun. in this case, the slightly oblique barrel edge, which is used as attachment surface for the lower leg of the tension ring and which simultaneously represents the upper boundary of the indentation, is made at a distance of about 10 to 20 aim, preferably about 15 tm, from the upper barrel edge in the outside wall of the barrel body. A solid outer support for the tension ring and for the barrel-gripping device that is put on is further achieved in that the solid barrel mouth edge, with its upward-^pointing smooth area that has the shape of a partial circle and is used as a sealing surface for the lid seal, is produced during the blow-molding process by squeezing the thermoplastically deformabJe plastic of the barrel wall with the aid of a mold slide, and outside on the solid barrel edge, a peripherally smaller flange edge with a radial extension of about 3 to 5 mm is formed, thus increasing the width of the horizontal support surface for the lower leg of the tension ring. Since the lidded barrel according to the invention in its light design for a capacity of 35 US gallons has a barrel (body) weight of only about 5.2 kg and for a capacity of 55 Us gallons has a barrel (body) weight of only about 8.2 kg, ae well as an opening width of the upper barrel mouth that is about 15% larger than a usual bulgy lidded barrel of the above-mentioned type, it is very well suited for granulate-like or pasty contents, for which mainly fiber drums are now used. In the USA, fiber drums, optionally with liners, are also widely used for liquids. Because of its excellent gas and liquid sealing properties as well as the ability to drain residue almost completely (with the lid on) via the residue-drain lid bung, the lightweight lidded barrel according to the invention Is also highly suitable for using liquids instead of the previously usual fiber drums. other advantages of the lidded barrel according to the invention consist in the fact that it has dimensions that are identical to the greatest extent possible to those of a corresponding plastic L-ring bung barrel or steel bung barrel, and it can thus be handled with the same barrel-gripping tools (parrot's beak). These lidded barrels can also be handled on pallets together with biing barrels without the losses of space due to big-bellicti lidded barrel, ^^.j differing heights that otherwise usually occur. The filling of the lidded barrels is done via the 2-inch bung using the sane filling systems as for bung barrels since the dimensions and arrangements of the lid bung correspond exactly to the relevant dimensions of the bung barrel. Reconditioning of the lidded barrels for reuse or multiple use is considerably simpler and more efficient in comparison with bung barrels, and also later disposal causes no problems whatsoever since the plastic of the barrel body and barrel lid as well as the tension ring, whcthar it is made of steel or of plastic, can be recycled without residue. The invention as well as otber advantageous embodinent variants are explained in greater detail and described below based on the embodiments diagrannatically presented in the drawings. Here: Figure l ehows a lidded barrel with a base ring according rto the invention, in aide view, Figure 2 shows another enbodinent of the lidded barrel according to the invention, Figure 3 shows a configuration comparison between a usual bulgy lidded barrel and a cylindrical lidded barrel according to the invention. Figure 4 shows a sectional view through the left edge area of a lidded barrel according to the Invention (US version), Figure 5 shows a sectional view through the left upper edge area of a lidded barrel according to the invention, Figure 6 shows a sectional view through the right upper edge area of a lidded barrel with barrel-gripping claws that are put on according to the invention. Figure 7 shows an enlarged sectional view through the right upper edge area of a lidded barrel according to the invention, . Figure 8 shows another lidded barrel (without base ring) according to the invention in side view with a partial sectional view (European version), Figure 9 shows an enlarged view of the upper barrel area of the lidded barrel according to Fig. 8, Figure lo shows an upper left barrel area in a partial sectional view. Figure 11.shows the upper left barrel area according to Fig. 10 in a complete sectional view. Figure 12 shows an upper right barrel area in a sectional view, Figure 13 shows an upper left barrel area in a sectional view of another embodiment (US version) and Figure 14 shows an upper left barrel area in a sectional view of another enbodiinent (US version). Ill Figure 1. a lidded barrel with a capacity of 55 US gallons here, according to the invention, which ie provid«»c3 with a barrel lid 12 put on and a tension-ring closure 14 in place, is referred to by reference number 10. About 80 of barrel body 20 is designed as fully cylindrical, while about 10* respectively of the barrel height upward toward barrel opening edge 28 and dovmward toward barrel bottom 34 is drawn in with a slight conical taper. In fully cylindrical part 26 of barrel body 20, two comparatively broad rounded b&rrel body roller cages^ 38 are arranged at one-third and two-thirds of the barrel height. In the conically tapered transition area between fully cylindrical part 26 of barrel body 20 and flat barrel bottom 34, a solid bottom roller cage 36 that ends flush with barrel bottom 34 is provided. Bottom roller cage 36 has a trapezoidal cross section below with a thinner bridge connection to barrel body 20 and an outside diameter that is almost identical to that of tension ring 14, which is put on in the closed state and imparts to lidded barrel 10 excellent stability, especially when several barrels are stacked on top of one another, and a high degree of stiffness or resistance to indentation or crushing (buckling worK in plastic) of the lower barrel edge when a filled lidded barrel is rolled at an oblique angle. The barrel with a capacity of 55 US gallons has a maximum diameter of about 57B mm and a height of about 898 mm (height/diameter ratio about 1.5S). A first modified barrel design with identical diameter dimensions, but a somewhat smaller volume of 52.5 US gallons, has a height/diameter ratio of about 1.49, and the barrel height with a tension ring mounted is about 860 mm. This barrel thus is of precisely the same height as the usual lidded barrels that are found In the USA, and it can therefore be handled on a pallet with the latter. A second modified barrel design with identical diameter dimensions, but a comparatively smaller volume of only 36 US gallons, has a heigbt/diameter ratio of only 1.06, and the barrel height with a tension ring mounted is about 610 mm. This barrel (the so'^called "stubby drum"} appears as high as it is wide and is provided especially for granulate-like or powder-like products, such as pigments, and to remove them from the barrel, the pigments are "scooped out" by hand with a scoop, owing to the small height (about one arm's length) of the barrel, it is also possible to . reaove residue fron the lover barrel area without having to bend double to reach into the barrel or to inhale dust particles. In Figure 2, a slender lidded barrel 10 with a volume of 35 US gallons is depicted as a preferred embodiment. This lidded barrel has a height of about 860 nn and a maximum diameter of barrel body roller cages 3& of about 475 mm. The height/ diameter ratio^iof this barrel is about 1.62. A modified barrel design with the identical diameter dimensions, but a smaller volume of 30 US gallons has, on the other hand, a height-diameter ratio of about 1.57, and the barrel height with a tension ring mounted is about 745 mm. The two barrel types of identical diameter (according to Fig. 1 and 2) with only different heights can be produced in an advantageous way in a single alternating blow mold. To this end, only a suitable extension ring piece in the blow mold needs to be used (taller barrel) or removed (shorter barrel). The particular feature of this embodiment variant thus consists in the fac% that it has almost the same dimensions as the fiber drums that are usually used today in the USA and can be manipulated and handled with the sane barrel-gripping tools as the usual fiber drums or bung barrels. In addition, the novel lidded barrels in a light design can be produced more economically Chan coaparable fiber drums and subsequently cause no disposal problems whatsoever since they are completely recyclable. The tension ring can be a usual sheet-steel closure ring, but it can also ba made entirely of plastic. . When using the lidded barrel according to the invention to hold liquids, barrel lid 12 is equipped with at least one bun? opening, preferably with two lateral bung openings that can be sealed and are arranged on opposite sides from one another; larger bung 42 has a 2-inch (about 50.8 nun) opening, and enaller bung 44 has a 3/4-inch (about 19.1 an) opening. Prom Fig. 2, it is also clear that the conical outline of the barrel wall inside indentation 22ibelow horizontal attachment surface 18 for the lower leg of tension-ring closure 14 is made at an acute angle a of between 15* and 30", preferably about 18* to 20°, at transition 24 to fully cylindrical part 26 of barrel body 20. This configuration ensures a high degree of resistance to stacking stresses. In Figure 3. a previously conunonly used bulgy standard lidded barrel or its barrel body 46 is drawn in the left half of the drawing in dotted configuration for comparison with barrel body 20 according to the invention. Frr-n this, the improved stability of the more slender lidded barrel according to the invention is clear. Furthermore, it is evident that in the case of the bulgy barrel body, the fully cylindrical part is only about one-third (1/3) of the entire height of the barrel body, while fully cylindrical part 26 in the case of the barrel body according to the invention constitutes more than three-fourths (3/4) of the entire height of the barrel body. As an advantageous result, especially also due to sturdy bottom roller cage 36, the barrels can be more easily handled on pallets, while In Ficmre 4. the left edge area of a lidded barrel 12 according to the invention is shown in cross-sectional view, k lid seal 30 is inserted or foamed-in into downward-facing U-shaped lid edge 16. hn approximately 25 mn deep engaging groove 32 is made between lid edge 16 and central flat lid disk 80 that i is arranged alnost fliish at the sane height. Engaging groove 32 has a flat groove floor 48, which evenly extends radially inward at least: lo nn, and preferably about 15 nn. An obliquely conical ring part 52 rises from groove floor 4S as a connecting piece to upper flat lid disk 80. On the lower side of barrel lid 12, two approximately 20 sun long (axial) ring flanges 54, 56 that extend down below engaging groove 32 are made in the outside edge area. Ring flanges 54, 56 are about 20 sua apart and are used to increase the stiffness of in a sunken bung housing 50. Of special importance is an intermediate piece or connecting piece 5B which is formed between U-shaped lid edge 16 and groove floor 48 and which, starting from lid edge 16, is bent or angled inward. With barrel lid 12 put in place, this bent connecting piece 58 or outer axial ring piece 54 comes to rest with the Inside wall of barrel body 20 opposite outer indentation 22 and increases the stacking capacity of the lid or lidded barrel because of the mutual support. In Fiaure 5. a corresponding partial section through the left upper edge area of a barrel lid 12 according to the invention is shown, but laterally outside a bung or bung housing. Here, radial ribs 60 that rest on the Inside against U-shaped lid edge 16 are arranged above angled connecting piece S8. Radial ribs 60 are provided in large numbers with a small lateral spacing of about 5 nun to 10 mm. Furthcnoore, in this enbodiaent of barrel lid 13, a second upvard-facing peripheral V-shaped groove 62 with a preferably rounded groovy .floor in the outside area of flat lid disX 80 is provided facing radially inward behind engaging groove 32. This groove 62 is Interrupted only by the recessed bung housing and improves the elasticity of the lid against internal overpressure and the surge pressure that occurs when a barrel falls. Further, Figure 6 shows the upper right edge area of a lidded barrel according to the invention with barrel-gripping claws 64, 66 applied. For the light barrel design, it is necessary that, in particular, the barrel lid and the barrel that, i.e., to ensure secure attachment of lower barrel-gripping claw 66, the radial depth of indentation 22 — measured frojn the extension line of the fully cylindrical part of the barrel body — is between 12 mm and 25 mm, preferably about 17 mm. The width of the horizontal support surface for the lower leg of tension ring 14 or the attachment surface for barrel-gripping claw 66 is also increased by vii.tue of the fact that solid barrel opening edge 28 is produced during the blow-molding process by squeezing the theraoplastically deforroable plastic of the barrel wall with the aid of a mold slide, so that a small peripheral flange edge 10 extending radially outward about 3 to 5 mm is formed on the outside at the bottom at barrel edge 28. In Fig. 6. it is further evident that the area of solid barrel opening edge 28 that points upward with a height of about 8 2DIQ upward has a smooth/ partially circular cross section as a sealing surface for lid seal 30. A special design of the mold slide in the blow mold ensures that this sealing surface of squeezed solid, barrel opening edge 28 that points upward and le exactly opposite lid seal 30 remains free of folds and seams of the squeezed plastic. These folds and seams are shifted outward and are advantageously arranged in outer flange edge 40r where they no longer pose a problem. To improve the engagement area of upper barrel-gripping claw 64, a considerable number of radial ribs 60 can be provided above bent connecting piece 58 behind U-shaped lid edge 16. To illustrate important features according to the invention, right barrel area of a lidded barrel. Quite important structural features consist especially in the fact that: — Above on the lid edge, an approximately 6 mm to 12 mm, preferably 8 mm wide, slightly obliquely adapted support surface 84 (identified by arrow) is formed for the upper leg of tension ring closure 14. Thus, when, for example, a barrel is dropped, the lid edge cannot move outward in the buckling areas under the tension ring, and the stress on the lid seal will not be relieved. Because of flange edge 40 which projects or overhangs , outward at the lower outside edge of the barrel body opening, an enlarged support surface 18 of at least 10 nm is provided for the lower slightly oblique leg of tension ring 14. The support surface is (in the radial direction) preferably even 15 ma. (arrow 86) wide. This is also advantageous for reliably gripping the barrel with the lower claw of the barrel-gripping tool (parrot's beak). Groove, floor 48 of outer peripheral engaging groove 32 is arranged at the saae height as or even a little below the lower leg of tension ring 14. As a result, the upper claws of the barrel-gripping device engage far down Into engaging groove 32 and reliably secure the lidded barrel. - The barrel body edge, which is overlapped by tension ring 14, is basically designed as a T that projects upward with a horizontal arm SB and a vertical am 90 that is arranged approximately in the center and pointing upward, and the surface of vertical am 90 that is pointing upward Is rounded in the shape of a partial circle (radius 4.5 mm) and represents the sealing surface of the barrel body edge that comes into contact with lid seal 30. A partial piece of horizontal arro 88 that points outward is represented by flange edge 40, which projects radially outward. The partial piece of the horizontal am that points inward connects to the barrel body wall that runs ox "flash" . downward. The cut point or cut surface of the cut-Oii slug piece (waste piece from the blow-molding process) is located in the transition area from the partial piece that points inward to the barrel wall that runs downward. The cut edge can run perpendicular or — as represented — slightly obliquely downward and toward the inside. Directly belov the cut edge, there is a contact area 92 of the barrel inner wall with the outside surface of the barrel lid or the extension of outer lid ring arm 54. In contact area 92 is the narrowest diameter of the barrel body opening, which is about 2 to 4 mm smaller here than at the cut edge of the slug piece. When the cover is mounted, outer lid ring arm 54 passes into the barrel interior and radial centering and bracing of the lid on the inner vail of the barrel takes place in contact area 92 below the cut surface of the slug piece. If a number of barrel bodies are distorted in a slightly oval shape, e.g,. by shrinkage stresses, a centering adaptation is made in the barrel opening area, thus ensuring a uniform positioning and an exact fit of the sealing surface of upward-pointing vertical arm 90 to lid seal 30. Such centering cannot be achieved with conventional barrel lids, which do not project part-way into the barrel interior and make contact there with the barrel inner wall. It is just this kind of centering that makes it possible to adapt the width of vertical arm 90 (8 am wide, about 9 ma high) to the inner width (about 10 rm) of the downward-facing U-shaped lid edge precisely enough to ensure that, on the outside and inside of vertical arm 90, exact lateral spacing gaps 96, 98 (identified by arrows) i mm wide are left. This ensures that vertical arjai 30 with the smooth, arched sealing surface always hits in the center on sealing ring 30. The lidded barrel according to the invention is further distinguished in that the maximum outside diameter of barrel lid 12 is equal in size to the outside diameter of flange edge 40 that projects radially outward (both connect flush to one another), and the distance between the face of the outer downward-facing leg and the downward-opening U-shaped lid edge for the upward-facing lateral face of flange edge 40 that projects radially outward at the barrel opening edge with a lid put on and with the tension ring closure closed is only about l I nun. For this ^purpose, it is ensured that when the stack load is applied, lid seal 30 needs to give only by this 1 van, and then the outer leg of the lid edge will come into contact with flange edge 40 that projects outside and will be supported on it in such a way that overstressing of seal 30 will be avoided. Another lidded barrel according to the invention {European version) without a base ring and with a capacity of 220 liters is depicted in Figure B. which with barrel lid 12 put on and tension ring closure 14 in place has a barrel weight of only about 8 Xg. The plastic of the barrel body consists of high-molecular-weight polyethylene (HD-PE). In this embodiment the dis)C'-shaped upper plate of barrel lid 12 projects over U-shaped lid edge 16 which is open downward or the upper leg of tension ring 14 that engages over the latter. The excass height is about two to five times the wall thickness or thickness of the barrel lid, preferably about 10 mm. This is used to improve long-cern stacking properties owing to a defined inner pressure buildup. In a modified embodiment, the lidded barrel can be equipped at the bottom with a base ring or bottom roller cage, which then is aligned in a plane with the bottom or is flush with it. Figure 9 provides a better view of barrel lid 12 with two lateral bunge 42, 44 that are recessed in bung cavities 50, 50'. (Left) 2-inch bung 42 is provided for filling as well as for the removal of the contents by means of a suction pipe. Further, said bung 42 is designed as a residue-drain bung owing to the adjacent incline of the iid upper plate, smaller 3/4 inch bung 44 can be opened to vent the barrel during filling or removal processes. As an addl-tional, quite essential feature^ it can be seen here that below V-shaped engaging groove 32 on the inside of barrel lid 12, two peripheral ring lands 54, 56, which are spaced a certain distance apart, are nade. Outer ring land 54 rests on the inner barrel wall. Ring lands 54, 56 are spaced approximately lO nm to 30 mm, preferably about 20 mm, apart and extend over a length of about 20 nun into the barrel in the axial direction. The particular feature of this embodirnant variant of a liddsd l:::rr:il r.c-' ccnsists in the fc^c ^^>t. ir i^ liusf aliacat exactly the same dimensions as a suitably closed L-ring bung barrel, which is usual and in use at present in the chemical industry in Europe, so that the novel lidded barrel can be handled on pallets together with ordinary bung barrels and can be manipulated and handled with the same barrel-gripping tools as ordinary bung barrels. The novel lidded barrels in a light design can further be produced economically and later cause no disposal problems whatsoever since they are comnletely recyclable. Also, here, tension ring 14 can be an ordinary sheati-sreel closure ring, but it can also be made entirely o£ plastic. In Figure 10. barrel lid 12 is shown in a sectional view next to 2-inch bung 42. On both sides of bung housing SO, the upper plate of barrel lid 12 is designed tilted downward toward the lid edge. On the outside, incline 68 extends as far as the projection or the beginning of inner ring land S6 or as far as the inner flal^'edge of engaging groove 32. Thus, when the lidded barrel is tilted slightly when inverted (turned over), the very last drop of liquid will flow out to lowest point 78 at the upper edge of inner ring land 56 or at the outer edge of the 2-inch bung or will run out through the bunghole from the inside of the barrel. In order also to make it possible for residual liquid to flow out from the outer lid area or from the space between two ring lands 54 and 56, it is provided according to the invention that a bore 76 (or a wider crosswise opening} be introduced 2.t least in inner ring land 56 directly in front of discharge bung 42. It is also advantageous to provide a suitable bore in outer ring land 54 at the sane spot to make it possible for residual liquidVrrom the space between the inside barrel wall and outside ring land 54. It is advisable to provide an inside-type indentation 74, viewed from the inside, directly in front of bung 42; into which bore 75, which is in ring land 56 and which leads to the bunghole, empties. In engaging groove 32, this inner outlet trough appears as a projection 72 that extends upward like a ridge obliquely to the bung. As Figure 11 shows, bores 76 run through ring lands 54 and 56 obliquely to the bung and with a steeper inclination to the bung than incline 68, so that lowest point 78 is produced on the outer edge of the bunghole. This can be achieved so easily because flat groove floor 4B of engaging groove 32 is deeper than the botton of bung housing 50. Groove floor 48 is approximately one to two wall thicknesses (about 30 nun to 10 mm) of the barrel lid deeper th^n the bottom of the bung housing. In Figure 12. the right edge area of a lidded barrel according to the invention is further shown in cross-section. As the other drawing figures also show, lid seal 30 is introduced into U-shaped lid edge 16 that is open downward. Engaging groove 32, which is about 20 mn to 40 mn deep, is placed between lid edge 16 and the central flat lid disk, which is designed to be higher. Engaging groove 32 has flat groove floor 48, which extends horizontally about 15 ma radially inward. From groove floor 48, obliquely conical ring part 52 rises {except in the bung housing area) as a connecting piece to the upper flat lid disk. On the lower side of barrel lid 12, two ring flanges 54, 56, which are recessed about 20 mm (axially) in the barrel body, are made in the outside area. Also visible is the 3/4-inch bung 44 arranged in recessed bung housing SO'. Basically, the residue-drain lid incline could ^Iso be placed hers. In Figure 13. another embodiment of a lidded barrel according to the invention (US version) is presented. In this connection, discharge bung 42' in the embodiment usuallv found in the .USX is designed witn bung plug 70 which sealB «t the top at the bung connection piece — in contrast to the eabodiment of the bung plug usually found in Europe, which comes to rest with its sealing ring and is sealed in the bung connection piece below the screw threading at a retracted conical sealing surface. The last embodiment, depicted in Figure 14. is distinguished from the eaibodinent shown in Fig. 13 essentially in that the upper plate or For the light barrel design according to the invention, it is necessary that, in particular, the barrel lid and the barrel opening area be matched exactly to one another. The special design of upper barrel edge 28 is significant. Part of this is that, to ensure secure attachment of lower barrel-gripping cl 66, the radial depth of indentation 22 — measured from the extension line of the fully cylindrical part of the barrel body — is between 12 mm and 25 mm, preferably about 17 mm- The width of the slightly oblique attachment surface for the lower leg of tension ring 14 or the attachment surface for barrel-gripping claw 66 is also increased by virtue of the fact that solid barrel opening edge 2£ is produced during the blow-aoluiing process by squeezing the thermoplastically deformable plastic of the barrel wall with the aid of a mold slide in such a way that a small peripheral flange edge 40 that extends radially outvard about 5 sua is formed on the outeida down at barrel edge 28. Barrel mouth edge 28 is designed as an inverted "L," which forms an angle of about 70" to 65", preferably about 76", between its long leg (= barrel wall) that points downward and its basically horizontal Bhort leg that points outward. The short leg that points outward is designed to be slightly obliquely conical on it^ lower side, i.e., it capers outward. The oblique surface Is used as attachment surface for the lower leg of the tension ring which, with the lid seal in the closed state, presses the lid on the upper barrel wall by aeans of the oblique attachment surface. The short "L"-leg is provided on its upper side with a bead-like projection, which has a smooth sejnicircular sealing surface above. This beadlike projection engages in the U-shaped lid edge and seals against the lid seal. The outer edge of the D-shaped lid edge that points downward ends almost flush ^':i\.n rlanga edge 40 of batrei spaiiiuij cuyes S that points radially outward, so that the lid seal will not be overstressed even in the case of overstacking. The semicircular area of solid barrel opening edge 28 that points upward has a height of at least 10 nun and forms the sealing surface for lid seal 30. k special design of the mold slide in the blow mold ensures that the sealing surface of squeezed solid barrel mouth edge 28 that points upward remains free of folds and seams of the squeszed plastic. To achieve the advantageous properties of the lidded barrel according to the invention, considerable numbers of details and subtleties that are matched to one another are important, which in combination with one another constitute the essence of this lidded barrel. WE CLAIM: 1. A cylindrical blow-moulded barrel (10) with a lid (12) and a clamping-ring closure (14), in which the upper arm of the clamping ring closure (14) of U-shaped cross-section engages in the closed state over the outer lid rim (16) and the lower arm thereof engages in a recess (22) in the upper barrel wall closely below the upper barrel rim (28), or engages under a barrel edge extending substantially horizontally or an abutment face (18) extending slightly obliquely and forming the upper boundary of the recess (22), the outline of which extends outwards in a substantially conical manner downwards towards the transition (24) into the completely cylindrical part of the barrel wall, wherein the over-lapped outer lid rim (16) has a U-shape open at the bottom as viewed in cross-section, into which a lid seal (30) is inserted or set in foam which comes to rest in a sealed manner against a slightly enlarged rim of the barrel mouth, wherein at least one bunghole opening (42, 44) sunk laterally into a bung casing is optionally provided in the barrel lid (12), characterized in that immediately behind the Ud rim (16) which is overlapped by the upper arm of the clamping ring closure (14), the barrel lid (12) is provided with a continuous, substantially V-shaped engaging groove (32) reduced downwards into the barrel body (20) with a flat bottom (48) between a central lid disc (80) of reduced diameter and the lid rim (16), the inner boundary of the engaging groove (32) is formed by a ring part (52) which extends obliquely upwards in a conical manner and to which the flat lid disc is attached, the outline of the recess (22) extends outwards in a substantially flat-conical manner downwards towards the transition (24) into the completely cylindrical part of the barrel wall, wherein the transition (24) from the conical area into the completely cylindrical part of the barrel body (20) is situated at a distance of from 80 mm to 140 mm, preferably about 120 mm, from the upper front edge of the rim (28) of the barrel mouth, and wherein the upper rim (28) of the barrel mouth is made solid as an abutment and a sealing face for the lid seal (30) and has a width (thickness) of at least double the wall thickness of the barrel body (20), wherein a continuous flange rim (40) with a radial extension of from about 3 to 5 mm is additionally formed on the outside of the barrel rim, as a result of which the width of the horizontal abutment face (18) is enlarged for the lower arm of the clamping ring (14). 2. The barrel with a lid according to claim 1, wherein the conical outline of the barrel wall inside the recess (22) below the horizontal abutment face (18) for the lower arm of the clamping closure (14) towards the transition (24) into the completely cylindrical part (26) of the barrel body (20) is made at an acute angle of between 15° and 30°, preferably about 18° to 20, to the longitudinal axis of the barrel. 3. The barrel with a lid according to claim 1 or 2 wherein the radial depth of the recess (22) is between 12 mm and 25 mm, preferably about 17 mm from the extension line of the completely cylindrical part (26) of the barrel body (20). 4. The barrel with a lid according to claim 1, 2 or 3, wherein the barrel edge (18), which extends slightly obliquely and is formed as an abutment face for the lower arm of the clamping ring (14) and which at the same time forms the upper boundary of the recess (22), is formed at a distance of about 10 mm to 20 mm, preferably about 15 mm, from the upper barrel rim (28) in the outer wall of the barrel body (20). 5. The barrel with a lid according to claim 1, 2, 3 or 4, wherein the upwardly directed surface of the solid rim (28) of the barrel mouth or of the vertical arm (90) has a smooth, partially circular cross-section as a sealing surface for the lid seal (30). 6. The barrel with a lid according to claim 1, 2, 3, 4 or 5, wherein the solid rim (28) of the barrel mouth is produced during blow-moulding by upsetting the thermoplastically deformable plastic material of the barrel wall by means of mould slides. 7. The barrel with a lid according to claim 1, 2, 3, 4, 5 or 6 wherein the barrel body (20) is provided at the bottom, in the transition area from the cylindrical barrel wall into the barrel bottom (34), with a continuous, solid bottom rolling ring (36) with a trapezoidal cross-section at the bottom and a thin web attachment to the barrel body (20), wherein the bottom rolling ring (36) has almost exactly the same external diameter as the clamping ring (14) fitted in the closed state. 8. The barrel with a lid according to at least one of the preceding claims 1 to 7, wherein the completely cylindrical part (26) of the barrel body (20) is at least three quarters of the overall height of the barrel (10) with a lid. 9. The barrel with a lid according to at least one of the preceding claims 1 to 8, wherein the conical outHne of the barrel wall inside the lower recess above the bottom rolling ring (36) to the transition upwards into the completely cylindrical part (26) of the barrel body (20) is made at an acute angle of between 15° and 30°, preferably about 18° to 20°. 10. The barrel with a lid according to at least one of the preceding claims 1 to 9, wherein the upper plate of the barrel lid (12) is made laterally symmetrical on both sides and inclined adjacent to the bung (42) or the bung casing (50), wherein the inclination (68) of the raised central disc-shaped lid part extends on the outside as far as the projection or beginning of an inner annular web (56) or as far as the inner flat rim of the engaging groove (32). 11. The barrel with a lid according to at least one of the preceding claims 1 to 10, wherein two mutually spaced annular flanges (54, 56) are formed on the underside of the barrel lid (12) in the outer-area thereof wherein the distance there-between is from about 10 mm to 30 mm, preferably about 18 mm, and the axial extension of the annular flanges (54, 56) into the barrel body (20) is likewise about from 10 mm to 30 mm, preferably about 18 mm. 12. The barrel with a lid according to claim 11, wherein a bore (76) is formed in the inner annular flange (56) and/or in the outer annular flange (54) directly in front of the discharge bung (42). 13. The barrel with a lid according to claim 12, wherein the bores (76) extend through the annular flanges (54, 56) obliquely to the bung (42), namely with a steeper slope to the bung than the inclination (68), so that the lowest point (78) is produced in the upside-down draining position at the outer edge of the bunghole. 14. The barrel with a lid according to at least one of the preceding claims 1 to 13, wherein a groove-like depression (74), which extends radially obliquely downwards to the bunghole and in which the bore (76) leading to the bunghole through the inner annular flange (56) is provided, is formed on the inside as a drainage channel directly in front of the bung (42) as viewed in the upside-down draining position. 15. A cylindrical blow-moulded barrel with a lid, substantially as herein described with reference to the accompanying drawings.

Full Text

This invention relates to a cylindrical/ blow-moldedi lidded barrel - wide-wouthed drum with a barrel lid and tension-ring closure, in which in the closed position, the tension ring, which is U-shaped in cross section, engages with its upper leg over the outside upper ^dge of the lid and engages with its lower leg under an outside edge of the barrel that runs basically horizontally or slightly obliquely downward in the opening area of the body of the barrel.
Such a lidded barrel is Icnown from, e.g., D£'-B-41 08 606. In the case of this barrel, however, the tension-ring closure is arranged some distance below the upper edge of the lid or the opening of the barrel, so that handling such a filled, e.g., 220-liter lidded barrel with a shipping weight of about 230 kg is possible only lising special barrel-gripping tools. This type of a iiaaed barrel was developed by Mauser in 1975 and distributed worldwide under the designation "standard lidded barrel"; it is well-suited for handling solid, particulate or pasty contents, but such a barrel is not readily suited for use with liquids.
In the case of lidded barrels, the sealing action of the
barrel lid on the barrel mouth is produced by bringing about
axial prestressing on the lid seal via the tension ring leg
bevels at the upper edge of the lid and at the outer border of
the barrel body (or indentation) as the tension ring is clamped
or closed. or = closure rinC

on lidded barrels that are approved for use in^ &.g., the
chemical industry, certain requirements with respect to their
storage and transport safety are set; conpliance vim these
reguiretnents is tested and examined in special acceptance tests
* or side wall dropping (e.g., dropping on its side «= jac)cet dropping, diagonal dropping
on the edge of the lid, static internal pressure test, i.a.)« In
the case of Xnown existing plastic lidded barrels, even when
barrels are dropped from heights of about 1.20 n — e.g., froa
the bed of a truck — leaks occur, especially in the case of
liquids, or complete detachment of the barrel lid can even occur.
The drawbacks of previously known lidded barrels consist of,
especially.
a) when there is axial internal pressure on the barrel lid
[surge pressure when a barrel filled with water is dropped on its
jacket or when there is hydraulic internal pressure in a closed
izucrel),
b) when a closed barrel that is fillert with water alar:: flat
gainst a side wall (jacket dropping), and
c) when a closed barrel that is filled with water drops
iagonally onto the edge of the lid, various reactions occur:
the barrel lid is pressed axially outward,
the tension ring is pulled axially outward,
the tension ring (together with lid and barrel mouth
rea) is flattened »t ths central Ijupact point,
the tension ring is heavily buckled laterally at the
npact point and its u-shape is flared at both buckling points,

. — cne lid edge tries to slide out from under the upper tension ring leg,
prestressing on the seal ie reduced and the locking syeteai begins leaking.
The stresses that occur with the deformations must be absorbed in each case by the U-shaped tension ring. In this connection, the legs are pressed outward (flared) in the buckling areas, if the(Stress on the legs is too high, it leads to permanent deformations, prestressing on the seal is reduced at those points, and significant flaring results in leaks or leeiking of the barrel.
An attempt is thus to be made to reduce the defornation of the tension ring, especially the flaring in the U-area, by structural measures, especially in the barrel mouth area, at the barrel lid and/or tension ring, while at the same tiroe continuing to ensiure good handling, i.e., easy closing of the tension ring.
The object of this invention is to made of plastic with a barrel lid and tension-ring closure which, owing to the special way in which the individual components are matched to one another, makes it possible to use the same barrel-gripping tool (parrot's beak) or which, in the filled state, can be manipulated with the same barrel-gripping tool, as usually used universally for modern plastic L-ring bung barrels or normal steel-bung barrele. In this case, the lidded barrel is to be especially suitable for using liquids, i.e., it remains liquidtight even when it falls or is dropped from considereible heights.

Accordingly the present invention provides a cylindrical blow-moulded barrel with a lid and a clamping-ring closure, in which the upper arm of the clamping ring closure of U-shaped cross-section engages in the closed state over the outer lid rim and the lower arm thereof engages in a recess in the upper barrel wall closely below the upper barrel rim, or engages under a barrel edge extending substantially horizontally or an abutment face extending slightly obliquely and forming the upper boundary of the recess, the outline of which extends outwards in a substantially conical manner downwards towards the transition into the completely cylindrical part of the barrel wall, wherein the over-lapped outer lid rim has a U-shape open at tiie bottom as viewed in cross-section, into which a lid seal is inserted or set in foam which comes to rest in a sealed manner against a slightly enlarged rim of the barrel mouth, wherein at least one bunghole opening sunk laterally into a bung casing is optionally provided in the barrel lid, characterized in that immediately behind the lid rim which is overlapped by tiie upper arm of the clamping ring closure, the barrel lid is provided with a continuous, substantially V-shaped engaging groove reduced downwards into the barrel body with a flat bottom between a central lid disc of reduced diameter and the lid rim, the inner boundary of the engaging groove is formed by a ring part which extends obliquely upwards in a conical manner and to which the flat lid disc is attached, the outline of the recess extends outwards in a substantially flat-conical manner downwards towards the transition into the completely cylindrical part of the barrel wall, wherein the transition from the conical area into the completely cylindrical part of the barrel body is situated at a distance of from 80 mm to 140 mm, preferably about 120 mm.

from the upper front edge of the rim of the barrel mouth, and wherein the upper rim of the barrel mouth is made solid as an abutment and a seahng face for the lid seal and has a width (thickness) of at least double the wall thickness of the barrel body, wherein a continuous flange rim with a radial extension of from about 3 to 5 mm is additionally formed on the outside of the barrel rim, as a result of which the width of the horizontal abutment face is enlarged for the lower arm of the clamping ring.
This special design of the upper outer area of the lidded barrel according to the invention makes it possible, on the one hand, to use or apply barrel-gripping tools that are generally employed for bung barrels; on the other hand, the lidded barrel according to the invention also has considerably improved liquid sealing properties in the case where it is filled with Hquid, e.g., in the case where barrels are dropped from considerable heights (about 1.8 m) or in the case of the previously described acceptance tests.
In a variant embodiment of the invention, it is provided that the conical outline of the barrel wall inside the indentation below the horizontal attachment surface for the lower leg of the tension-ring closure be made at an acute angle of between 15° and 30° preferably about 18° to 20°, at the transition in the frilly cylindrical part of the barrel body to the longitudinal axis of the barrel. As a result, the barrel-gripping device can, as usual, be brought in first against the cylindrical barrel body in the usual way and then

To ensxire a. secure fit of the lower tension-ring leg as well as the barrel-gripping claw that is applied thereto, it is provided according to the invention that the radial depth of the indantation, jneasured by the extension line of the fully cylindrical part of the barrel body, be between 12 sun and 25 ma, preferably about 17 nun. in this case, the slightly oblique barrel edge, which is used as attachment surface for the lower leg of the tension ring and which simultaneously represents the upper boundary of the indentation, is made at a distance of about 10 to 20 aim, preferably about 15 tm, from the upper barrel edge in the outside wall of the barrel body. A solid outer support for the tension ring and for the barrel-gripping device that is put on is further achieved in that the solid barrel mouth edge, with its upward-^pointing smooth area that has the shape of a partial circle and is used as a sealing surface for the lid seal, is produced during the blow-molding process by squeezing the thermoplastically deformabJe plastic of the barrel wall with the aid of a mold slide, and outside on the solid barrel edge, a peripherally smaller flange edge with a radial extension of about 3 to 5 mm is formed, thus increasing the width of the horizontal support surface for the lower leg of the tension ring.
Since the lidded barrel according to the invention in its light design for a capacity of 35 US gallons has a barrel (body) weight of only about 5.2 kg and for a capacity of 55 Us gallons has a barrel (body) weight of only about 8.2 kg, ae well as an opening width of the upper barrel mouth that is about 15% larger than a usual bulgy lidded barrel of the above-mentioned type, it

is very well suited for granulate-like or pasty contents, for which mainly fiber drums are now used.
In the USA, fiber drums, optionally with liners, are also widely used for liquids. Because of its excellent gas and liquid sealing properties as well as the ability to drain residue almost completely (with the lid on) via the residue-drain lid bung, the lightweight lidded barrel according to the invention Is also highly suitable for using liquids instead of the previously usual fiber drums.
other advantages of the lidded barrel according to the invention consist in the fact that it has dimensions that are identical to the greatest extent possible to those of a corresponding plastic L-ring bung barrel or steel bung barrel, and it can thus be handled with the same barrel-gripping tools (parrot's beak). These lidded barrels can also be handled on pallets together with biing barrels without the losses of space due to big-bellicti lidded barrel*, ^^.j differing heights that otherwise usually occur. The filling of the lidded barrels is done via the 2-inch bung using the sane filling systems as for bung barrels since the dimensions and arrangements of the lid bung correspond exactly to the relevant dimensions of the bung barrel.
Reconditioning of the lidded barrels for reuse or multiple use is considerably simpler and more efficient in comparison with bung barrels, and also later disposal causes no problems whatsoever since the plastic of the barrel body and barrel lid as

well as the tension ring, whcthar it is made of steel or of plastic, can be recycled without residue.
The invention as well as otber advantageous embodinent variants are explained in greater detail and described below based on the embodiments diagrannatically presented in the drawings. Here:
Figure l ehows a lidded barrel with a base ring according
rto the invention, in aide view, Figure 2 shows another enbodinent of the lidded barrel
according to the invention, Figure 3 shows a configuration comparison between a usual
bulgy lidded barrel and a cylindrical lidded
barrel according to the invention. Figure 4 shows a sectional view through the left edge area
of a lidded barrel according to the Invention (US
version), Figure 5 shows a sectional view through the left upper edge
area of a lidded barrel according to the
invention, Figure 6 shows a sectional view through the right upper
edge area of a lidded barrel with barrel-gripping
claws that are put on according to the invention. Figure 7 shows an enlarged sectional view through the right
upper edge area of a lidded barrel according to
the invention,

. Figure 8 shows another lidded barrel (without base ring) according to the invention in side view with a partial sectional view (European version), Figure 9 shows an enlarged view of the upper barrel area of
the lidded barrel according to Fig. 8, Figure lo shows an upper left barrel area in a partial
sectional view. Figure 11.shows the upper left barrel area according to Fig.
10 in a complete sectional view. Figure 12 shows an upper right barrel area in a sectional
view, Figure 13 shows an upper left barrel area in a sectional
view of another embodiment (US version) and Figure 14 shows an upper left barrel area in a sectional
view of another enbodiinent (US version). Ill Figure 1. a lidded barrel with a capacity of 55 US gallons here, according to the invention, which ie provid«»c3 with a barrel lid 12 put on and a tension-ring closure 14 in place, is referred to by reference number 10. About 80* of barrel body 20 is designed as fully cylindrical, while about 10* respectively of the barrel height upward toward barrel opening edge 28 and dovmward toward barrel bottom 34 is drawn in with a slight conical taper. In fully cylindrical part 26 of barrel body 20, two comparatively broad rounded b&rrel body roller cages^ 38 are arranged at one-third and two-thirds of the barrel height. In the conically tapered transition area between fully cylindrical part 26 of barrel body 20 and flat barrel bottom 34, a solid

bottom roller cage 36 that ends flush with barrel bottom 34 is provided. Bottom roller cage 36 has a trapezoidal cross section below with a thinner bridge connection to barrel body 20 and an outside diameter that is almost identical to that of tension ring 14, which is put on in the closed state and imparts to lidded barrel 10 excellent stability, especially when several barrels are stacked on top of one another, and a high degree of stiffness or resistance to indentation or crushing (buckling worK in plastic) of the lower barrel edge when a filled lidded barrel is rolled at an oblique angle.
The barrel with a capacity of 55 US gallons has a maximum diameter of about 57B mm and a height of about 898 mm (height/diameter ratio about 1.5S). A first modified barrel design with identical diameter dimensions, but a somewhat smaller volume of 52.5 US gallons, has a height/diameter ratio of about 1.49, and the barrel height with a tension ring mounted is about 860 mm. This barrel thus is of precisely the same height as the usual lidded barrels that are found In the USA, and it can therefore be handled on a pallet with the latter. A second modified barrel design with identical diameter dimensions, but a comparatively smaller volume of only 36 US gallons, has a heigbt/diameter ratio of only 1.06, and the barrel height with a tension ring mounted is about 610 mm. This barrel (the so'^called "stubby drum"} appears as high as it is wide and is provided especially for granulate-like or powder*-like products, such as pigments, and to remove them from the barrel, the pigments are "scooped out" by hand with a scoop, owing to the small height

(about one arm's length) of the barrel, it is also possible to . reaove residue fron the lover barrel area without having to bend double to reach into the barrel or to inhale dust particles.
In Figure 2, a slender lidded barrel 10 with a volume of 35 US gallons is depicted as a preferred embodiment. This lidded barrel has a height of about 860 nn and a maximum diameter of barrel body roller cages 3& of about 475 mm. The height/ diameter ratio^iof this barrel is about 1.62. A modified barrel design with the identical diameter dimensions, but a smaller volume of 30 US gallons has, on the other hand, a height-diameter ratio of about 1.57, and the barrel height with a tension ring mounted is about 745 mm. The two barrel types of identical diameter (according to Fig. 1 and 2) with only different heights can be produced in an advantageous way in a single alternating blow mold. To this end, only a suitable extension ring piece in the blow mold needs to be used (taller barrel) or removed (shorter barrel).
The particular feature of this embodiment variant thus consists in the fac% that it has almost the same dimensions as the fiber drums that are usually used today in the USA and can be manipulated and handled with the sane barrel-gripping tools as the usual fiber drums or bung barrels. In addition, the novel lidded barrels in a light design can be produced more economically Chan coaparable fiber drums and subsequently cause no disposal problems whatsoever since they are completely recyclable. The tension ring can be a usual sheet-steel closure ring, but it can also ba made entirely of plastic.

. When using the lidded barrel according to the invention to hold liquids, barrel lid 12 is equipped with at least one bun? opening, preferably with two lateral bung openings that can be sealed and are arranged on opposite sides from one another; larger bung 42 has a 2-inch (about 50.8 nun) opening, and enaller bung 44 has a 3/4-inch (about 19.1 an) opening. Prom Fig. 2, it is also clear that the conical outline of the barrel wall inside indentation 22ibelow horizontal attachment surface 18 for the lower leg of tension-ring closure 14 is made at an acute angle a of between 15** and 30", preferably about 18* to 20°, at transition 24 to fully cylindrical part 26 of barrel body 20. This configuration ensures a high degree of resistance to stacking stresses.
In Figure 3. a previously conunonly used bulgy standard lidded barrel or its barrel body 46 is drawn in the left half of the drawing in dotted configuration for comparison with barrel body 20 according to the invention. Frr-n this, the improved stability of the more slender lidded barrel according to the invention is clear. Furthermore, it is evident that in the case of the bulgy barrel body, the fully cylindrical part is only about one-third (1/3) of the entire height of the barrel body, while fully cylindrical part 26 in the case of the barrel body according to the invention constitutes more than three-fourths (3/4) of the entire height of the barrel body. As an advantageous result, especially also due to sturdy bottom roller cage 36, the barrels can be more easily handled on pallets, while

In Ficmre 4. the left edge area of a lidded barrel 12 according to the invention is shown in cross-sectional view, k lid seal 30 is inserted or foamed-in into downward-facing U-shaped lid edge 16. hn approximately 25 mn deep engaging groove 32 is made between lid edge 16 and central flat lid disk 80 that
i
is arranged alnost fliish at the sane height. Engaging groove 32 has a flat groove floor 48, which evenly extends radially inward at least: lo nn, and preferably about 15 nn. An obliquely conical ring part 52 rises from groove floor 4S as a connecting piece to upper flat lid disk 80.
On the lower side of barrel lid 12, two approximately 20 sun long (axial) ring flanges 54, 56 that extend down below engaging groove 32 are made in the outside edge area. Ring flanges 54, 56 are about 20 sua apart and are used to increase the stiffness of

in a sunken bung housing 50. Of special importance is an intermediate piece or connecting piece 5B which is formed between U-shaped lid edge 16 and groove floor 48 and which, starting from lid edge 16, is bent or angled inward. With barrel lid 12 put in place, this bent connecting piece 58 or outer axial ring piece 54 comes to rest with the Inside wall of barrel body 20 opposite outer indentation 22 and increases the stacking capacity of the lid or lidded barrel because of the mutual support.
In Fiaure 5. a corresponding partial section through the left upper edge area of a barrel lid 12 according to the

invention is shown, but laterally outside a bung or bung housing. Here, radial ribs 60 that rest on the Inside against U-shaped lid edge 16 are arranged above angled connecting piece S8. Radial ribs 60 are provided in large numbers with a small lateral spacing of about 5 nun to 10 mm.
Furthcnoore, in this enbodiaent of barrel lid 13, a second upvard-facing peripheral V-shaped groove 62 with a preferably rounded groovy .floor in the outside area of flat lid disX 80 is provided facing radially inward behind engaging groove 32. This groove 62 is Interrupted only by the recessed bung housing and improves the elasticity of the lid against internal overpressure and the surge pressure that occurs when a barrel falls.
Further, Figure 6 shows the upper right edge area of a lidded barrel according to the invention with barrel-gripping claws 64, 66 applied. For the light barrel design, it is necessary that, in particular, the barrel lid and the barrel

that, i.e., to ensure secure attachment of lower barrel-gripping claw 66, the radial depth of indentation 22 — measured frojn the extension line of the fully cylindrical part of the barrel body — is between 12 mm and 25 mm, preferably about 17 mm. The width of the horizontal support surface for the lower leg of tension ring 14 or the attachment surface for barrel-gripping claw 66 is also increased by vii.tue of the fact that solid barrel opening edge 28 is produced during the blow-molding process by squeezing the theraoplastically deforroable plastic of the barrel wall with the aid of a mold slide, so that a small peripheral flange edge

10 extending radially outward about 3 to 5 mm is formed on the
outside at the bottom at barrel edge 28.
In Fig. 6. it is further evident that the area of solid barrel opening edge 28 that points upward with a height of about 8 2DIQ upward has a smooth/ partially circular cross section as a sealing surface for lid seal 30. A special design of the mold slide in the blow mold ensures that this sealing surface of squeezed solid, barrel opening edge 28 that points upward and le exactly opposite lid seal 30 remains free of folds and seams of the squeezed plastic. These folds and seams are shifted outward and are advantageously arranged in outer flange edge 40r where they no longer pose a problem. To improve the engagement area of upper barrel-gripping claw 64, a considerable number of radial ribs 60 can be provided above bent connecting piece 58 behind U-shaped lid edge 16.
To illustrate important features according to the invention,

right barrel area of a lidded barrel. Quite important structural features consist especially in the fact that:
— Above on the lid edge, an approximately 6 mm to 12 mm, preferably 8 mm wide, slightly obliquely adapted support surface 84 (identified by arrow) is formed for the upper leg of tension ring closure 14. Thus, when, for example, a barrel is dropped, the lid edge cannot move outward in the buckling areas under the tension ring, and the stress on the lid seal will not be relieved.

Because of flange edge 40 which projects or overhangs , outward at the lower outside edge of the barrel body opening, an enlarged support surface 18 of at least 10 nm is provided for the lower slightly oblique leg of tension ring 14. The support surface is (in the radial direction) preferably even 15 ma. (arrow 86) wide. This is also advantageous for reliably gripping the barrel with the lower claw of the barrel-gripping tool (parrot's beak). Groove, floor 48 of outer peripheral engaging groove 32 is arranged at the saae height as or even a little below the lower leg of tension ring 14. As a result, the upper claws of the barrel-gripping device engage far down Into engaging groove 32 and reliably secure the lidded barrel.
- The barrel body edge, which is overlapped by tension ring 14, is basically designed as a T that projects upward with a horizontal arm SB and a vertical am 90 that is arranged approximately in the center and pointing upward, and the surface of vertical am 90 that is pointing upward Is rounded in the shape of a partial circle (radius 4.5 mm) and represents the sealing surface of the barrel body edge that comes into contact with lid seal 30. A partial piece of horizontal arro 88 that points outward is represented by flange edge 40, which projects radially outward. The partial piece of the horizontal am that
points inward connects to the barrel body wall that runs
ox "flash"
. downward. The cut point or cut surface of the cut-Oii slug piece (waste piece from the blow-molding process) is located in the transition area from the partial piece that points inward to the barrel wall that runs downward. The cut edge can run

perpendicular or — as represented — slightly obliquely downward and toward the inside. Directly belov the cut edge, there is a contact area 92 of the barrel inner wall with the outside surface of the barrel lid or the extension of outer lid ring arm 54. In contact area 92 is the narrowest diameter of the barrel body opening, which is about 2 to 4 mm smaller here than at the cut edge of the slug piece. When the cover is mounted, outer lid ring arm 54 passes into the barrel interior and radial centering and bracing of the lid on the inner vail of the barrel takes place in contact area 92 below the cut surface of the slug piece. If a number of barrel bodies are distorted in a slightly oval shape, e.g,. by shrinkage stresses, a centering adaptation is made in the barrel opening area, thus ensuring a uniform positioning and an exact fit of the sealing surface of upward-pointing vertical arm 90 to lid seal 30. Such centering cannot be achieved with conventional barrel lids, which do not project part-way into the barrel interior and make contact there with the barrel inner wall. It is just this kind of centering that makes it possible to adapt the width of vertical arm 90 (8 am wide, about 9 ma high) to the inner width (about 10 rm) of the downward-facing U-shaped lid edge precisely enough to ensure that, on the outside and inside of vertical arm 90, exact lateral spacing gaps 96, 98 (identified by arrows) i mm wide are left. This ensures that vertical arjai 30 with the smooth, arched sealing surface always hits in the center on sealing ring 30.
The lidded barrel according to the invention is further distinguished in that the maximum outside diameter of barrel lid

12 is equal in size to the outside diameter of flange edge 40 that projects radially outward (both connect flush to one another), and the distance between the face of the outer downward-facing leg and the downward-opening U-shaped lid edge for the upward-facing lateral face of flange edge 40 that projects radially outward at the barrel opening edge with a lid put on and with the tension ring closure closed is only about l
I
nun. For this ^purpose, it is ensured that when the stack load is applied, lid seal 30 needs to give only by this 1 van, and then the outer leg of the lid edge will come into contact with flange edge 40 that projects outside and will be supported on it in such a way that overstressing of seal 30 will be avoided.
Another lidded barrel according to the invention {European version) without a base ring and with a capacity of 220 liters is depicted in Figure B. which with barrel lid 12 put on and tension ring closure 14 in place has a barrel weight of only about 8 Xg. The plastic of the barrel body consists of high-molecular-weight polyethylene (HD-PE). In this embodiment the dis)C'-shaped upper plate of barrel lid 12 projects over U-shaped lid edge 16 which is open downward or the upper leg of tension ring 14 that engages over the latter. The excass height is about two to five times the wall thickness or thickness of the barrel lid, preferably about 10 mm. This is used to improve long-cern stacking properties owing to a defined inner pressure buildup. In a modified embodiment, the lidded barrel can be equipped at the bottom with a base ring or bottom roller cage, which then is aligned in a plane with the bottom or is flush with it.

Figure 9 provides a better view of barrel lid 12 with two lateral bunge 42, 44 that are recessed in bung cavities 50, 50'. (Left) 2-inch bung 42 is provided for filling as well as for the removal of the contents by means of a suction pipe. Further, said bung 42 is designed as a residue-drain bung owing to the adjacent incline of the iid upper plate, smaller 3/4 inch bung 44 can be opened to vent the barrel during filling or removal processes.
As an addl-tional, quite essential feature^ it can be seen here that below V-shaped engaging groove 32 on the inside of barrel lid 12, two peripheral ring lands 54, 56, which are spaced a certain distance apart, are nade. Outer ring land 54 rests on the inner barrel wall. Ring lands 54, 56 are spaced approximately lO nm to 30 mm, preferably about 20 mm, apart and extend over a length of about 20 nun into the barrel in the axial direction. The particular feature of this embodirnant variant of a liddsd l:::rr:il r.c-' ccnsists in the fc^c ^^>t. ir i^ liusf aliacat exactly the same dimensions as a suitably closed L-ring bung barrel, which is usual and in use at present in the chemical industry in Europe, so that the novel lidded barrel can be handled on pallets together with ordinary bung barrels and can be manipulated and handled with the same barrel-gripping tools as ordinary bung barrels. The novel lidded barrels in a light design can further be produced economically and later cause no disposal problems whatsoever since they are comnletely recyclable. Also, here, tension ring 14 can be an ordinary

sheati-sreel closure ring, but it can also be made entirely o£ plastic.
In Figure 10. barrel lid 12 is shown in a sectional view next to 2-inch bung 42. On both sides of bung housing SO, the upper plate of barrel lid 12 is designed tilted downward toward the lid edge. On the outside, incline 68 extends as far as the projection or the beginning of inner ring land S6 or as far as the inner flal^'edge of engaging groove 32.
Thus, when the lidded barrel is tilted slightly when inverted (turned over), the very last drop of liquid will flow out to lowest point 78 at the upper edge of inner ring land 56 or at the outer edge of the 2-inch bung or will run out through the bunghole from the inside of the barrel.
In order also to make it possible for residual liquid to flow out from the outer lid area or from the space between two ring lands 54 and 56, it is provided according to the invention that a bore 76 (or a wider crosswise opening} be introduced 2.t least in inner ring land 56 directly in front of discharge bung 42. It is also advantageous to provide a suitable bore in outer ring land 54 at the sane spot to make it possible for residual liquidVrrom the space between the inside barrel wall and outside ring land 54. It is advisable to provide an inside-type indentation 74, viewed from the inside, directly in front of bung 42; into which bore 75, which is in ring land 56 and which leads to the bunghole, empties. In engaging groove 32, this inner outlet trough appears as a projection 72 that extends upward like a ridge obliquely to the bung.

As Figure 11 shows, bores 76 run through ring lands 54 and 56 obliquely to the bung and with a steeper inclination to the bung than incline 68, so that lowest point 78 is produced on the outer edge of the bunghole. This can be achieved so easily because flat groove floor 4B of engaging groove 32 is deeper than the botton of bung housing 50. Groove floor 48 is approximately one to two wall thicknesses (about 30 nun to 10 mm) of the barrel lid deeper th^n the bottom of the bung housing.
In Figure 12. the right edge area of a lidded barrel according to the invention is further shown in cross-section. As the other drawing figures also show, lid seal 30 is introduced into U-shaped lid edge 16 that is open downward. Engaging groove 32, which is about 20 mn to 40 mn deep, is placed between lid edge 16 and the central flat lid disk, which is designed to be higher. Engaging groove 32 has flat groove floor 48, which extends horizontally about 15 ma radially inward. From groove floor 48, obliquely conical ring part 52 rises {except in the bung housing area) as a connecting piece to the upper flat lid disk.
On the lower side of barrel lid 12, two ring flanges 54, 56, which are recessed about 20 mm (axially) in the barrel body, are made in the outside area. Also visible is the 3/4-inch bung 44 arranged in recessed bung housing SO'. Basically, the residue-drain lid incline could ^Iso be placed hers.
In Figure 13. another embodiment of a lidded barrel according to the invention (US version) is presented. In this connection, discharge bung 42' in the embodiment usuallv found in

the .USX is designed witn bung plug 70 which sealB «t the top at the bung connection piece — in contrast to the eabodiment of the bung plug usually found in Europe, which comes to rest with its sealing ring and is sealed in the bung connection piece below the screw threading at a retracted conical sealing surface.
The last embodiment, depicted in Figure 14. is distinguished from the eaibodinent shown in Fig. 13 essentially in that the upper plate or For the light barrel design according to the invention, it is necessary that, in particular, the barrel lid and the barrel opening area be matched exactly to one another. The special design of upper barrel edge 28 is significant. Part of this is that, to ensure secure attachment of lower barrel-gripping cl 66, the radial depth of indentation 22 — measured from the extension line of the fully cylindrical part of the barrel body — is between 12 mm and 25 mm, preferably about 17 mm- The width of the slightly oblique attachment surface for the lower leg of tension ring 14 or the attachment surface for barrel-gripping claw 66 is also increased by virtue of the fact that solid barrel opening edge 2£ is produced during the blow-aoluiing process by squeezing the thermoplastically deformable plastic of the barrel wall with the aid of a mold slide in such a way that a

small peripheral flange edge 40 that extends radially outvard about 5 sua is formed on the outeida down at barrel edge 28.
Barrel mouth edge 28 is designed as an inverted "L," which forms an angle of about 70*" to 65", preferably about 76", between its long leg (= barrel wall) that points downward and its basically horizontal Bhort leg that points outward. The short leg that points outward is designed to be slightly obliquely conical on it^ lower side, i.e., it capers outward. The oblique surface Is used as attachment surface for the lower leg of the tension ring which, with the lid seal in the closed state, presses the lid on the upper barrel wall by aeans of the oblique attachment surface. The short "L"-leg is provided on its upper side with a bead-like projection, which has a smooth sejnicircular sealing surface above. This beadlike projection engages in the U-shaped lid edge and seals against the lid seal. The outer edge of the D-shaped lid edge that points downward ends almost flush ^':i\.n rlanga edge 40 of batrei spaiiiuij cuyes *S that points radially outward, so that the lid seal will not be overstressed even in the case of overstacking.
The semicircular area of solid barrel opening edge 28 that points upward has a height of at least 10 nun and forms the sealing surface for lid seal 30. k special design of the mold slide in the blow mold ensures that the sealing surface of squeezed solid barrel mouth edge 28 that points upward remains free of folds and seams of the squeszed plastic.
To achieve the advantageous properties of the lidded barrel according to the invention, considerable numbers of details and

subtleties that are matched to one another are important, which in combination with one another constitute the essence of this lidded barrel.

WE CLAIM:
1. A cylindrical blow-moulded barrel (10) with a lid (12) and a clamping-ring closure (14), in which the upper arm of the clamping ring closure (14) of U-shaped cross-section engages in the closed state over the outer lid rim (16) and the lower arm thereof engages in a recess (22) in the upper barrel wall closely below the upper barrel rim (28), or engages under a barrel edge extending substantially horizontally or an abutment face (18) extending slightly obliquely and forming the upper boundary of the recess (22), the outline of which extends outwards in a substantially conical manner downwards towards the transition (24) into the completely cylindrical part of the barrel wall, wherein the over-lapped outer lid rim (16) has a U-shape open at the bottom as viewed in cross-section, into which a lid seal (30) is inserted or set in foam which comes to rest in a sealed manner against a slightly enlarged rim of the barrel mouth, wherein at least one bunghole opening (42, 44) sunk laterally into a bung casing is optionally provided in the barrel lid (12), characterized in that immediately behind the Ud rim (16) which is overlapped by the upper arm of the clamping ring closure (14), the barrel lid (12) is provided with a continuous, substantially V-shaped engaging groove (32) reduced downwards into the barrel body (20) with a flat bottom (48) between a central lid disc (80) of reduced diameter and the lid rim (16), the inner boundary of the engaging groove (32) is formed by a ring part (52) which extends obliquely upwards in a conical manner and to which the flat lid disc is attached, the outline of the recess (22) extends outwards in a substantially flat-conical manner downwards towards the

transition (24) into the completely cylindrical part of the barrel wall, wherein the transition (24) from the conical area into the completely cylindrical part of the barrel body (20) is situated at a distance of from 80 mm to 140 mm, preferably about 120 mm, from the upper front edge of the rim (28) of the barrel mouth, and wherein the upper rim (28) of the barrel mouth is made solid as an abutment and a sealing face for the lid seal (30) and has a width (thickness) of at least double the wall thickness of the barrel body (20), wherein a continuous flange rim (40) with a radial extension of from about 3 to 5 mm is additionally formed on the outside of the barrel rim, as a result of which the width of the horizontal abutment face (18) is enlarged for the lower arm of the clamping ring (14).
2. The barrel with a lid according to claim 1, wherein the conical outline of the barrel wall inside the recess (22) below the horizontal abutment face (18) for the lower arm of the clamping closure (14) towards the transition (24) into the completely cylindrical part (26) of the barrel body (20) is made at an acute angle of between 15° and 30°, preferably about 18° to 20, to the longitudinal axis of the barrel.
3. The barrel with a lid according to claim 1 or 2 wherein the radial depth of the recess (22) is between 12 mm and 25 mm, preferably about 17 mm from the extension line of the completely cylindrical part (26) of the barrel body (20).

4. The barrel with a lid according to claim 1, 2 or 3, wherein the barrel edge (18), which extends slightly obliquely and is formed as an abutment face for the lower arm of the clamping ring (14) and which at the same time forms the upper boundary of the recess (22), is formed at a distance of about 10 mm to 20 mm, preferably about 15 mm, from the upper barrel rim (28) in the outer wall of the barrel body (20).
5. The barrel with a lid according to claim 1, 2, 3 or 4, wherein the upwardly directed surface of the solid rim (28) of the barrel mouth or of the vertical arm (90) has a smooth, partially circular cross-section as a sealing surface for the lid seal (30).
6. The barrel with a lid according to claim 1, 2, 3, 4 or 5, wherein the solid rim (28) of the barrel mouth is produced during blow-moulding by upsetting the thermoplastically deformable plastic material of the barrel wall by means of mould slides.
7. The barrel with a lid according to claim 1, 2, 3, 4, 5 or 6 wherein the barrel body (20) is provided at the bottom, in the transition area from the cylindrical barrel wall into the barrel bottom (34), with a continuous, solid bottom rolling ring (36) with a trapezoidal cross-section at the bottom and a thin web attachment to the barrel body (20), wherein the bottom rolling ring (36) has almost exactly the same external diameter as the clamping ring (14) fitted in the closed state.

8. The barrel with a lid according to at least one of the preceding claims 1 to 7, wherein the completely cylindrical part (26) of the barrel body (20) is at least three quarters of the overall height of the barrel (10) with a lid.
9. The barrel with a lid according to at least one of the preceding claims 1 to 8, wherein the conical outHne of the barrel wall inside the lower recess above the bottom rolling ring (36) to the transition upwards into the completely cylindrical part (26) of the barrel body (20) is made at an acute angle of between 15° and 30°, preferably about 18° to 20°.

10. The barrel with a lid according to at least one of the preceding claims 1 to 9, wherein the upper plate of the barrel lid (12) is made laterally symmetrical on both sides and inclined adjacent to the bung (42) or the bung casing (50), wherein the inclination (68) of the raised central disc-shaped lid part extends on the outside as far as the projection or beginning of an inner annular web (56) or as far as the inner flat rim of the engaging groove (32).
11. The barrel with a lid according to at least one of the preceding claims 1 to 10, wherein two mutually spaced annular flanges (54, 56) are formed on the underside of the barrel lid (12) in the outer-area thereof wherein the distance there-between is from about 10 mm to 30 mm, preferably about 18 mm, and the axial extension of the annular flanges (54, 56) into the barrel body (20) is likewise about from 10 mm to 30 mm, preferably about 18 mm.

12. The barrel with a lid according to claim 11, wherein a bore (76) is formed in the inner annular flange (56) and/or in the outer annular flange (54) directly in front of the discharge bung (42).
13. The barrel with a lid according to claim 12, wherein the bores (76) extend through the annular flanges (54, 56) obliquely to the bung (42), namely with a steeper slope to the bung than the inclination (68), so that the lowest point (78) is produced in the upside-down draining position at the outer edge of the bunghole.
14. The barrel with a lid according to at least one of the preceding claims 1 to 13, wherein a groove-like depression (74), which extends radially obliquely downwards to the bunghole and in which the bore (76) leading to the bunghole through the inner annular flange (56) is provided, is formed on the inside as a drainage channel directly in front of the bung (42) as viewed in the upside-down draining position.
15. A cylindrical blow-moulded barrel with a lid, substantially as herein described with reference to the accompanying drawings.

Documents:

1189-mas-1995 abstract.jpg

1189-mas-1995 abstract.pdf

1189-mas-1995 claims.pdf

1189-mas-1995 correspondence-others.pdf

1189-mas-1995 correspondence-po.pdf

1189-mas-1995 description (complete).pdf

1189-mas-1995 drawings.pdf

1189-mas-1995 form-1.pdf

1189-mas-1995 form-26.pdf

1189-mas-1995 form-4.pdf

1189-mas-1995 others.pdf

1189-mas-1995 petition.pdf

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Patent Number

191867

Indian Patent Application Number

1189/MAS/1995

PG Journal Number

30/2009

Publication Date

24-Jul-2009

Grant Date

16-Jul-2004

Date of Filing

13-Sep-1995

Name of Patentee

M/S. MAUSER-WERKE GMBH

Applicant Address

SCHILDGESSTR, 71-163 50321 BRUHL

Inventors:

#	Inventor's Name	Inventor's Address
1	PRZYTULLA, DIETMAR	GUSTAV-HEINEMANN-STR. 64 50170 KERPEN

PCT International Classification Number

B65D08/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA