Title of Invention

A ROTOR DISTRIBUTOR PLATE FOR USE IN VERTICAL SHAFT IMPACT CRUSHER

Abstract A distributor plate (38) is adapted to be releasably mounted on a horizontal lower disc of a rotor of a vertical shaft impact crusher. The rotor has an opening for the intake of material to be crushed and at least one outflow opening for material leaving the rotor. The distributor plate (38) is an equilateral polygon as seen from above.
Full Text A WEAR PART FOR A CRUSHER
Technical Field of the Invention
The present invention relates to a distributor plate
adapted to be releasably mounted on a horizontal lower
disc of a rotor of a vertical shaft impact crusher, said
rotor having an opening for the intake of material to be
crushed and at least one outflow opening for material
leaving the rotor.
The present invention also relates to a rotor for a
vertical shaft impact crusher, the rotor having an
opening for the intake of material to be crushed, at
least one outflow opening for material leaving the rotor,
and at least one lower wear plate and a distributor plate
releasably mounted on a horizontal lower disc of the
rotor.
Background Art
Vertical shaft impact crushers (VSI-crushers) are
used in many applications for crushing hard material like
rocks, ore etc. US 3,154,259 describes a VSI-crusher
comprising a housing and a horizontal rotor located
inside the housing. Material that is to be crushed is fed
into the rotor via an opening in the top thereof. With
the aid of centrifugal force the rotating rotor ejects
the material against the wall of the housing. On impact
with the wall the material is crushed to a desired size.
The housing wall could be provided with anvils or have a
bed of retained material against which the accelerated
material is crushed.
The rotor of a VSI-crusher usually has a horizontal
upper disc and a horizontal lower disc. The upper and
lower discs are connected with a vertical rotor wall. The
upper disc has an aperture for feeding material into the
rotor. The material lands on the lower disc and is then
thrown out of the rotor via openings in the rotor wall.

usually provided with a distributor plate. The
distributor plate, which is located at the centre of the
lower disc, is made from a material that is resistant to
impact and wear.
In US 3,767,127 to Wood a deflection disc assembly
is described. The deflection disc has an outer ring and a
core member. A central stud passing through the core
member and threadedly engaged to the rotor shaft holds
the deflection disc in position in the rotor.
US 4,690,341 to Hise describes a flat centre wear
plate which is fixed to the rotor shaft by a bolt.
WO 01/30501 describes a distributor comprising a
first part having an inclined surface and a second part
with a flat surface. A bolt holds the first and second
parts fixed to a rotor shaft.
US 4796822A describes an impeller for use in a rock
crusher and does not relate to distributor plate. It
relates to the impeller and provides the features
indicating that it is mounted on for concentric rotation
within the housing and includes upper and lower cover
plates, landing surface and an opening being formed in
the upper plate for directing the rock to the impeller.
The impeller has cylindrical side walls which connect the
cover plates and has a plurality of exits equally spaced
on the side wall.
The distributor plates described above do not have a
very long life and cause a rather long down time when
they need to be replaced. To make it possible for a
person working with the rotor to replace the distributor
plate it is often necessary to dismantle the top of the
rotor.
Summary of the Invention
It is an object of the present invention to provide
a distributor plate which has a longer life and which
decreases the down time required for maintenance of the
rotor.
This object is achieved with a distributor plate
according to the preamble and characterised in that the
distributor plate is an equilateral polygon as seen from
above.
An advantage with this distributor plate is that its
life is greatly increased. The polygonal shape provides
straight side edges which decrease the wear, particularly
at the periphery of the distributor plate. A possible

explanation is that much of the wear at the periphery of
the distributor plate may be caused by dust loaded air
streams circulating inside the rotor. Those air streams
may be hindered by the straight side edges thus reducing
the wear. A polygon has several straight side edges and
would thus be able to efficiently hinder any dust loaded
air streams.
Preferably the distributor plate has a shape chosen
among triangular, square, hexagonal, octagonal and
nonagonal shapes. An advantage with these particular
shapes is that they are particularly efficient in
hindering dust loaded air streams from circulating inside
the rotor. In particular the hexagonal, octagonal and
nonagonal shapes are also very robust to large pieces of
material impacting the distributor plate. Still more
preferably said polygon is an equilateral polygon, the
number of sides of the polygon being chosen such that the
number of sides is 1, 2 or 3 times the number of outflow
openings of the rotor to which the distributor plate is
to be mounted. An equilateral polygon makes it easier to
balance the rotor. The distributor plate should have at
least one side edge corresponding to each outflow opening
of the rotor. If the number of sides of the distributor
plate is 2 or 3 times the number of outflow openings it
is possible to turn the distributor plate after some time
in operation such that the sides being adjacent to the
outflow openings is changed. Thus the life of the
distributor plate is prolonged. Preferably the number of
sides is 2 times the number of outflow openings of the
rotor. This design has proven to give both a long life,
possibly due to the fact that such a number of sides are
especially efficient in hindering the rotating air
streams inside the rotor, and the possibility to turn the
distributor plate after some time of operation to further
increase its life.
Preferably at least one straight side edge of the
distributor plate is adapted to be parallel to an outflow

direction of material leaving the rotor and to be
parallel and adjacent to a face of a lower wear plate
protecting the lower disc from wear. This design has
proven to give a long life for both the distributor
plate, the lower wear plate and the lower disc due to the
fact that swirling of dust loaded air streams on the
lower wear plate and on the lower disc is efficiently
prevented by the distributor plate when located in this
relation to the lower wear plate and to the direction of
material leaving the rotor. It is also easy to make the
distributor plate fit with a horizontal wear plate
extending from a position close to the centre of the
rotor and towards the outflow opening.
According to a preferred embodiment the distributor
plate at the centre of its lower face has a recess
adapted to make the distributor plate horizontally
turnable around a vertical shaft mounted on the lower
disc, such that the position of the distributor plate in
relation to the lower disc may be adjusted before
mounting the distributor plate. The recess makes it easy
to centre the distributor plate on the rotor. After
centring the distributor plate it may be turned around
the shaft until the correct position of the edge/-s is
obtained, the distributor plate still being safely
centred. It also becomes easy to turn the distributor
plate to some degree after it has become worn. This makes
it possible to quickly turn the distributor plate to a
new position without having to dismount the rotor. Thus
maintenance stops become quick and efficient. Still more
preferably the recess extends only through a part of the
thickness of the distributor plate, the upper face of the
distributor plate thus being unaffected by said recess.
An advantage with this design is that the upper surface
of the distributor plate obtains a much better impact and
wear resistance since it is unbroken. The central part of
the distributor plate is exposed both to heavy impact
wear and possibly also to wear caused by dust loaded air

streams circulating inside the rotor. The risk of rocks
breaking a central bolt and the risk of an excessive wear
of a central bolt or of a cap protecting a central bolt
is thus avoided with the design of the present invention.
Also it becomes easier to manufacture the distributor
plate with the unbroken upper surface, in particular if
the upper surface is to be provided with a layer of extra
resistant material.
Preferably the upper face of the distributor plate
comprises an unbroken layer of a hard metal, such as
tungsten carbide. Such a layer of hard metal will
substantially prolong the life of the distributor plate
and thus decrease maintenance costs.
According to a preferred embodiment the distributor
plate comprises mounting means located at a vertical side
edge of the distributor plate and adapted for the
mounting of a vertical support fixing the distributor
plate to the lower disc of the rotor. An advantage with
such mounting means is that they do not interact with the
upper surface of the distributor plate. Another advantage
is that the distributor plate will provide some
protection for the mounting means located below the
actual material flow. The mounting means may also be
fitted and removed without having to lift the entire
distributor plate.
j It is another object of the present invention to
provide a rotor which require less down time for
maintenance.
This object is achieved with a rotor according to
the preamble and characterised in that the distributor
plate is an equilateral polygon as seen from above, at
least one straight side edge of the distributor plate
being parallel to an outflow direction of material
leaving the rotor and being parallel to and adjacent to a
face of the lower wear plate.
An advantage of this rotor is that the polygonal
shape of the distributor plate decreases the wear inside

leaving the rotor and being parallel to and adjacent to a
face of the lower wear plate.
An advantage of this rotor is that the polygonal
shape of the distributer plate decreases the wear inside
the rotor and thus maintenance stops may de made less
frequently. The straight side edge of the distributor
plate fit with the adjacent anc parallel face of the wear
plate to hinder any wear at the underlying lower disc of
the rotor.
These and other aspects of the invention well be
apparent from and elucidated with reference to the
embodiments described hereafter.
Brief Description of the accompanying Drawings
The invention will hereafter be described in more
detail and with reference to the appended drawings.
Fig 1 is three-dimensional section view and shows a
rotor for a VSI-crusher
Fig 2 is a three-dimensional view and shows the
rotor of fig 1 with the upper disc removed.
Fig 3 shows the view of fig 2 as seen from above in
a two dimensional perspective.
Fig 1 is an enlargement of the central portion of
fig 3 and shows a distributor plate.
Fig 5 is a sectional view along the line V-V of fig
4 .
Fig 6 is a three-dimensional view of the distributor
plate.
Fig 7 is a three-dimensional view as seen along the
arrow VII of fig 4.
Fig 8 is a three-dimensional view of a distributor
plate according to a second embodiment of the invention.
Fig 9 is a three-dimensional view and shows an
alternative way of releasably fixing the distributor
plate.
Fig 10 is an enlargement of the area X shown in fig
9.

Fig 13 is a three-dimensional view of a distributor
plate according to a third embodiment of the invention.
Detailed Description of Preferred Embodiments of the
Invention
Fig 1 shows a rotor 1 for use in a VSI-crusher. The
rotor 1 has a roof in the form of an upper disc 2 having
a top wear plate 3 and a floor in the form of a lower
disc 4. The lower disc 4 has a hub 6, which is welded to
the disc 4. The hub 6 is to be connected to a shaft (not
shown) for rotating the rotor 1 inside the housing 6f a
VSI-crusher.
The upper disc 2 has a central opening 8 through
which material to be crushed can be fed into the rotor 1.
The upper disc 2 is protected from wear by upper wear
plates 10 and 12. The upper disc 2 is protected from
rocks impacting the rotor 1 from above by the top wear
plate 3. As is better shown in fig 2 the lower disc 4 is
protected from wear by three lower wear plates 14, 16 and
18.
The upper and lower discs 2, 4 are separated by and
held together by a vertical rotor wall which is separated
into three wall segments 20, 22 and 24. The gaps between
the wall segments 20, 22, 24 define outflow openings 26,
28, 30 through which material may be ejected against a
housing wall.
At each outflow opening 26, 28, 30 the respective
wall segment 20, 22, 24 is protected from wear by three
wear tips 32, 34, 36 located at the trailing edge of the
respective wall segment 20, 22, 24.
A distributor plate 38 is fastened to the centre of
the lower disc 4. The distributor plate 38 distributes
the material that is fed via the opening 8 in the upper
disc 2 and protects the lower disc 4 from wear and impact
damages caused by the material fed via the opening 8.
During operation of the rotor 1 a bed 40 of material
is built up inside the rotor 1 against each of the three

wall segments 20, 22, 24. In fig 3 only the bed 40
located adjacent to the wall segment 20 is shown. The bed
40, which consists of material that has been fed to the
rotor 1 and then has been trapped inside it, extends from
a rear support plate 42 to the wear tips 32, 34, 36. The
bed 40 protects the wall segment 20 and the wear tips 32,
34, 36 from wear and provides a proper direction to the
ejected material. The dashed arrow A describes a typical
passage of a piece of rock fed to the rotor 1 via the
central opening 8 and ejected via the outflow opening 26.
The arrow R indicates the rotational direction of the
rotor 1 during operation of the VSI-crusher.
Each wall segment 20, 22, 24 is provided with a
cavity wear plate 44, 46, 48, each consisting of three
cavity wear plate portions. The cavity wear plates 44,
46, 48 protects the rotor 1 and in particular the wear
tips 32, 34, 36 from material rebounding from the housing
wall and from ejected material and airborne, fine dust
spinning around the rotor 1.
In fig 4 the regularly hexagonal shape of the-
distributor plate 38 is shown in greater detail. The
distributor plate 38 has six equilateral, vertical side
edges 50, 52, 54, 56, 58, 60. The side edge 50 is
substantially parallel to the outflow direction B of the
material leaving the rotor 1 via the outflow opening 26.
The side edge 50 is also parallel and adjacent with the
face 62 of the wear plate 14. In a similar way the side
edge 58 is adjacent to the face 64 of the wear plate 16
and the side edge 54 is adjacent to the face 66 of the
wear plate 18. The distributor plate 38 has a central
flat area 68 from which a sloped surface 70 of the
distributor plate 38 extends towards the side edges 50,
52, 54, 56, 58 and 60.
The distributor plate 38 is removably fixed to the
lower disc 4 with the help of three vertical supports 72,
74, 76 fitted to the side edges 52, 56, 60 that are not
adjacent to a face of a wear plate. Thus the vertical

supports 72, 74, 76 are located at some distance from the
typical rock passage indicated with the arrow A.
As is shown in figure 5 the distributor plate 3 8
rests on a mounding plate 78. The mounting plate 78 has
the same hexagonal shape as the distributor plate 38 as
seen from above. The mounting plate 78 is bolted to the
hub 6 and thus to the lower disc 4. A vertically mounted
central bolt 80 extending through the mounting plate 78
is bolted at the centre of the hub 6. The distributor
plate 3 8 has a central cylindrical recess 82 at its lower
face 84. The diameter and depth of the recess 82 is
adapted to-house the circular top of the bolt 80 such
that the bolt 80 centres the distributor plate 38 on the
lower disc 4. The lower face 84 of the distributor plate
38 may slide on the upper surface of the mounting plate
78 when a locking member 206 according to an alternative
embodiment of a vertical support described below has been
removed. The lower surface 84 of the distributor plate 38
is located at a higher level than the upper surfaces of
the wear plates 14, 16, 18. Thus it is possible to turn
the distributor plate 38 on the mounting plate 78 without
removing the wear plates 14, 16, 18.
The flat area 68 and the sipped surface 70 together
form an unbroken upper surface 8 6 of the distributor
plate 38 as indicated in fig 6. The distributor plate 38
shown in fig 6 is made.entirely from white iron. Each
vertical side edge 50, 52, 54, 56, 58, 60 has a mounting
means in the form a of a hole 88 as shown in fig 6. The
hole 88 may be provided with an inner thread to receive a
bolt 90 forming part of the support 72, 74 and 76
respectively, as seen in fig 7. As is shown in fig 7 the
supports 72, 74, 76 are fitted in slots in the lower disc
4 and bolted to the distributor plate 3 8 with the help of
the bolts 90 thus holding the distributor plate 3 8 in
place.

The mounting of the distributor plate 38 is
performed by lowering it such that the recess 82 engages
the top of the bolt 80. The distributor plate 3 8 is then
turned in the horizontal plane until the side edges 50,
54 and 58 have the proper position in relation to the
wear plates 14, 16, 18. The supports 72, 74, 76 are
mounted to the distributor plate 38 such that it becomes
fixed to the lower disc 4.
After some time of operation of the rotor 1 the
distributor plate 38 has been subjected to some wear. The
wear pattern often has a certain relationship with the
outflow openings, such that the maximum wear often occurs
at the side edges 50, 54, 58 being adjacent to a
horizontal wear plate. The supports 72, 74, 76 are
dismounted. The distributor plate 38 is now turned
horizontally, thus sliding on the upper surface of the
mounting plate 78, until the side edge 52 is adjacent to
the face 62 of the wear plate 14, the side edge 56 being
adjacent to the face 66 of the wear plate 18 and so on.
The supports 72, 74, 76 are mounted again and the rotor 1
is ready for operation. Thus it is possible to prolong
the life of the distributor plate 38 by simply turning it
60° in the horizontal plane after some time of operation.
At the turning sequence the distributor plate 3 8 need not
be lifted, since it simple slides on the mounting plate
78. The turning thus becomes very quick and easy to
perform.
In fig 8 another embodiment of the invention is
shown. The main difference compared to the distributor
plate 3 8 is that this embodiment is a distributor plate
138 in the form of an equilateral triangle. The
distributor plate 138 has a central flat area 168 from
which a sloped surface 170 extends towards the three
vertical side edges 150, 152, 154. Each of the three
vertical side edges 150, 152, 154 is adapted to be
located adjacent to a face of a wear plate. The

distributor plate 138 is thus adapted for mounting at a
rotor having three outflow openings.
In fig 9 to 12 an alternative embodiment of the
fixing of the distributor plate 38 is shown. The mounting
plate 78 is provided with a pair of lugs 200, 202 and a
round mounting hole 204 as is better shown in figure 11.
A vertical support in the form of a locking member 206,
shown in figure 12, is provided with an upper pin 208 and
a lower pin 210. The upper pin 208 fits into the hole 88,
which need not be threaded, of the distributor plate 38
and the lower pin 210 fits into the mounting hole 204 of
the mounting plate 78. A spring dowel pin 212 is inserted
via holes 214, 216 in the lugs 200, 202 to lock the
locking member 206 in its proper position. The locking
member 206 thus fixes the distributor plate 38 to the
mounting plate 78. The locking member 206 is easily
mounted by just inserting its pins 208, 210 into the hole
88 and the mounting hole 204 respectively followed by
insertion of the spring dowel pin 212 such that it locks
the locking member 206. The above described embodiment
provides for very quick mounting or turning of the
distributor plate 38. Preferably pairs of lugs 200, 202
are located at those sides of the mounting plate 78 that
are located at some distance from a rock passage, such as
the rock passage indicated with the arrow A in fig 3.
Thus the wear on the locking member 206 is minimized. As
indicated in fig 9 and fig 10 the upper part of the
locking member 206 is located below the upper surface 86
of the distributor plate 38. Thus the feed material
flowing over the upper surface 86 of the distributor
plate 38 will flow over the locking member 206 without
causing any substantial wear to it.
Fig 13 shows a third embodiment of the invention. A
hexagonal distributor plate 338 shown in fig 13 has
vertical side edges 350, 352, 354 and holes 388 that are
similar to the vertical side edges 50, 52, 54 and holes

88 respectively of the distributor plate 38 described
above. The upper surface 386 of the distributor plate 338
is flat. The distributor plate 338 comprises a base layer
340 made from a flat sheet of a hard steel. A top layer
342 of a hard metal, such as tungsten carbide, has been
coated on the flat upper surface of the base layer 340.
The distributor plate 3 38 having the top layer 342 made
of tungsten carbide has very good resistance to wear and
impact and will have a very long life. The flat upper
surface of the base layer 340 makes the tungsten carbide
layer 342 easy to apply to the base layer 340. The fact
that the upper surface 386 of the tungsten layer 342 will
be flat as well also contributes to making the
application of the tungsten layer 342 simple. The
distributor plate 338 has a recess (not shown in fig 13)
which is similar to the recess 82 of the distributor
plate 38. The fact that no bolts or holes extend through
the upper surface 3 86 avoids the formation of any weak
spots in the tungsten layer 342 thus further improving
its resistance to wear and impact.
It will be appreciated that numerous modifications
of the embodimentsfdescribed above are possible within
the scope of the appended claims.
The number of edges and thus the polygonal shape of
the distributor plate may be varied to fit the rotor in
question. For a rotor with tree outflow openings a
distributor with triangular or hexagonal shape is
preferably used. A nonagonal shape is also possible. For
at rotor with four outflow openings a distributor having
square or octagonal shape is preferably used. A
dodecagonal shape is also possible. A distributor plate
having a number of side edges being two times the number
of outflow openings is preferable since the distributor
may be turned once for prolonged life. Triangular,
square, hexagonal, octagonal, nonagonal and dodecagonal
shapes all have the advantage of having only outwardly

directed corners. This avoids the swirling of dust loaded
air and the subsequent wear that may result from any
inwardly directed corners. Further the hexagonal,
octagonal and nonagonal shapes have corners with obtuse
angles. Obtuse angles have the advantage of providing a
distributor plate which is less sensitive to impacting
rocks, which may more easily break a corner being right-
angled or having an acute angle.
The lower surface 84 of the distributor plate 3 8
may, as described above with reference to Fig. 5, be
located above the upper surfaces of the lower wear plates
14, 16, 18. For a rotor with a very low vertical height
it may however be necessary, for reasons of maintaining
the capacity for material passing through such a rotor,
to locate the distributor plate 38 such that its lower
surface 84 rests directly on the lower disc 4 of the
rotor. In such a case the distributor plate 3 8 would need
to be lifted somewhat such that its lower surface 84
comes above the upper surfaces of the wear plates 14, 16,
18 before the distributor plate 38 could be turned.

WE CLAIM:
1. A rotor distributor plate for use in vertical shaft impact crusher, said distributor plate adapted
to be releasably mounted on a horizontal lower disc (4) of a rotor (1) of a vertical shaft impact
crusher, said rotor (1) being of the type having an opening (8) for the intake of material to be
crushed and at least one outflow opening (26) for material leaving the rotor (1), characterized in
that the distributor plate (38; 338) is an equilateral polygon and wherein the distributor plate (38;
338) has corners with obtuse angles.
2. A distributor plate according to claim 1, wherein the distributor plate (38; 338) has a shape
chosen among hexagonal, octagonal and nonagonal shapes.
3. A distributor plate according to claim 1 or 2, wherein the number of sides (50, 52, 54, 56, 58,
60) of the polygon being chosen such that the number of sides is 1, 2 or 3 times the number of
outflow openings (26, 28, 30) of the rotor (1) to which the distributor plate (38) is to be mounted.
4. A distributor plate according to claim 3, wherein the number of sides (50, 52, 54, 56, 58, 60)
is 2 times the number of outflow openings (26, 28, 30) of the rotor (1).
5. A distributor plate according to any one of the preceding claims, wherein at least one straight
side edge (50) of the distributor plate (38) is adapted to be parallel to an outflow direction (B) of
material leaving the rotor (1) and to be parallel and adjacent to a face (62) of a lower wear plate
(14) protecting the lower disc (4) from wear.
6. A distributor plate according to any one of the preceding claims, wherein the distributor plate
(38) at the centre of its lower face (84) has a recess (82) adapted to make the distributor plate
(38) horizontally turnable around a vertical shaft (80) mounted on the lower disc (4), such that
the position of the distributor plate (38) in relation to the lower disc (4) may be adjusted before
mounting the distributor plate (38).
7. A distributor plate according to claim 6, wherein the recess (80) extends only through a part
of the thickness of the distributor plate (38), the upper face (86) of the distributor plate (38) thus
being unaffected by said recess(80).

8. A distributor plate according to any one of claims 6 to 7, wherein the distributor plate (38) has
a lower surface (84) which is adapted to be located at a higher level than the upper surface of
lower wear plates (14, 16, 18) protecting the lower disc (4) of the rotor (1), such that the
distributor plate (38) may be adjusted without removing the lower wear plates (14, 16, 18).
9. A distributor plate according to any one of the preceding claims, wherein the upper face (386)
of the distributor plate (338) comprises an unbroken layer (342) of a hard metal, such as
tungsten carbide.
10. A distributor plate according to any one of the preceding claims, wherein the distributor
plate comprises mounting means (88) located at a vertical side edge (50) of the distributor plate
(38) and adapted for the mounting of a vertical support (72; 206) fixing the distributor plate (38)
to the lower disc (4) of the rotor(1).
11. A rotor for a vertical shaft impact crusher, the rotor (1) having an opening (8) for the intake
of material to be crushed, at least one outflow opening (26) for material leaving the rotor (1), and
at least one lower wear plate (14) and a distributor plate (38) according to claim 1 releasably
mounted on a horizontal lower disc (4) of the rotor (1), wherein at least one straight side edge
(50) of the distributor plate (38) being parallel to an outflow direction (B) of material leaving the
rotor (1) and being parallel to and adjacent to a face (62) of the lower wear plate (14).


A distributor plate (38) is adapted to be releasably mounted on a horizontal lower
disc of a rotor of a vertical shaft impact crusher. The rotor has an opening for the intake
of material to be crushed and at least one outflow opening for material leaving the rotor.
The distributor plate (38) is an equilateral polygon as seen from above.

Documents:

449-KOLNP-2005-(02-04-2012)-PETITION UNDER RULE 138.pdf

449-KOLNP-2005-(13-09-2011)-CORRESPONDENCE.pdf

449-KOLNP-2005-(30-04-2012)-FORM-27.pdf

449-KOLNP-2005-ABSTRACT 1.1.pdf

449-KOLNP-2005-ABSTRACT-1.2.pdf

449-kolnp-2005-abstract.pdf

449-KOLNP-2005-AMANDED CLAIMS.pdf

449-KOLNP-2005-ASSIGNMENT.1.3.pdf

449-kolnp-2005-assignment.pdf

449-kolnp-2005-assignment1.1.pdf

449-KOLNP-2005-CANCELLED PAGES.pdf

449-KOLNP-2005-CLAIMS 1.1.pdf

449-kolnp-2005-claims.pdf

449-KOLNP-2005-CORRESPONDENCE 1.1.pdf

449-KOLNP-2005-CORRESPONDENCE 1.2.pdf

449-KOLNP-2005-CORRESPONDENCE 1.5.pdf

449-KOLNP-2005-CORRESPONDENCE 1.6.pdf

449-KOLNP-2005-CORRESPONDENCE-1.3.pdf

449-KOLNP-2005-CORRESPONDENCE-1.7.pdf

449-KOLNP-2005-CORRESPONDENCE.1.3.pdf

449-KOLNP-2005-CORRESPONDENCE.1.4.pdf

449-kolnp-2005-correspondence.pdf

449-KOLNP-2005-DESCRIPTION (COMPLEATE) 1.1.pdf

449-kolnp-2005-description (complete).pdf

449-KOLNP-2005-DRAWING 1.1.pdf

449-kolnp-2005-drawings.pdf

449-KOLNP-2005-EXAMINATION REPORT.1.3.pdf

449-kolnp-2005-examination report.pdf

449-kolnp-2005-form 1.pdf

449-KOLNP-2005-FORM 18.1.3.pdf

449-kolnp-2005-form 18.1.pdf

449-kolnp-2005-form 18.pdf

449-kolnp-2005-form 2.pdf

449-KOLNP-2005-FORM 3.1.1.pdf

449-KOLNP-2005-FORM 3.1.3.pdf

449-kolnp-2005-form 3.pdf

449-KOLNP-2005-FORM 5.1.3.pdf

449-kolnp-2005-form 5.1.pdf

449-kolnp-2005-form 5.pdf

449-KOLNP-2005-FORM 6.1.3.pdf

449-kolnp-2005-form 6.1.pdf

449-kolnp-2005-form 6.pdf

449-kolnp-2005-granted-abstract.pdf

449-kolnp-2005-granted-claims.pdf

449-kolnp-2005-granted-description (complete).pdf

449-kolnp-2005-granted-drawings.pdf

449-kolnp-2005-granted-form 1.pdf

449-kolnp-2005-granted-form 2.pdf

449-KOLNP-2005-GRANTED-LETTER PATENT.pdf

449-kolnp-2005-granted-specification.pdf

449-kolnp-2005-others.pdf

449-KOLNP-2005-PA.1.3.pdf

449-kolnp-2005-pa.pdf

449-kolnp-2005-pa1.1.pdf

449-KOLNP-2005-REPLY TO EXAMINATION REPORT.1.3.pdf

449-KOLNP-2005-REPLY TO EXAMINATION REPORT.pdf

449-kolnp-2005-reply to examination report1.1.pdf

449-kolnp-2005-specification.pdf

449-KOLNP-2005-TRANSLATED COPY OF PRIORITY DOCUMENT.pdf


Patent Number 248934
Indian Patent Application Number 449/KOLNP/2005
PG Journal Number 37/2011
Publication Date 16-Sep-2011
Grant Date 12-Sep-2011
Date of Filing 18-Mar-2005
Name of Patentee SANDVIK INTELLECTUAL PROPERTY AB
Applicant Address S-811 81 SANDVIKEN
Inventors:
# Inventor's Name Inventor's Address
1 DALLIMORE, ROWAN 5 CHARLTON PARK, MIDSOMER NORTON, RADSTOCK BA3 4BN
2 LOVEN BJORN BODEKULLSGATAN 33A, S-21440 MALMÖ
3 NORMAN SVEN-HENRIK LILLA RÖDDE 1, S-27035 BLENTARP
4 FENSOME, GEORGE 11 SPEEDWELL CLOSE, THORNBURY, BRISTOL BS35 1UD
PCT International Classification Number B02C 19/00
PCT International Application Number PCT/SE2003/001318
PCT International Filing date 2003-08-27
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 0202533-6 2002-08-28 Sweden