Title of Invention

PLUG-IN POWER SUPPLY WITH EXCHANGEABLE MAINS PLUG UNIT

Abstract The present invention relates to a plug-in power supply device for supplying a lower voltage to a consumer, in particular a plug-in power supply device whose mains plug unit is embodied in the form of a replaceable plug-in system. The inventive plug-in power supply device comprises a housing in which a voltage transformer module for converting a network voltage in such a way that the required low voltage is delivered and the replaceable plug-in system provided with at least two contact pins are arranged. The aim of said invention is to deliver an improved version of a plug-in power supply device provided with the replaceable plug-in system which satisfies the acting world-wide safety standards, is produced in a simple and cost-effective manner and which is easy to use. For this purpose, the housing is provided with at least two spring terminals which are electrically connected to the voltage transformer module, at least two contact rods which are placed on the plug-in system, interact with the spring terminals for bringing into contact said contact pins and each contact rod is arranged in separately embodied recesse with respect to the dimensions thereof in such a way that the international standard IEC 60884 requirements concerning contact safety and leakage current are fulfilled.
Full Text FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10, rule 13)
"PLUG-IN POWER SUPPLY WITH EXCHANGEABLE MAINS PLUG UNIT"
FRIWO GERAETEBAU GMBH , a German company of Von-Liebig-Strasse 11, 48346 Ostbevern, Germany.
The following specification particularly describes the invention and the manner in which it is to be performed.


Plug-in power supply with exchangeable mains plug unit
The present invention relates to a plug-in power supply for supplying a consumer with a low voltage, and in particular to a plug-in power supply wherein the mains plug unit is exchangeable in the form of a conversion plug system.
Plug-in power supply units in the lowest power range are nowadays increasingly built as switching mode power supply units. Due to their small dimensions and their low weight, they have established themselves in many fields of application and they replace the traditional linear devices. By means of the switching mode power supply technology, a so-called universal input voltage input can easily be realized so that the power supply unit can, as far as its electronic concept is concerned, theoretically be operated at each power socket in the world. This, however, is prevented by the great differences existing worldwide between the plug systems and plug shapes; this has the consequence that unsafe so-called plug adapters have to be additionally used in most cases; due to the enlarged distance between the plug-in power supply and the power socket, these plug adapters may increase the torque, which acts on the power socket, in an inadmissible manner.
Hence, the implementation of an exchangeable conversion plug, which is integrated in the design of the device, is a much safer and therefore desirable alternative.
German patent DE 43 22 087 C2 discloses a plug-in power supply for supplying electric devices with low voltage, wherein contacting between the device and the conversion plugs takes place via spring contacts, the respective spring contacts being accommodated in the plug and being in contact with the voltage transformer module of the power supply unit via contact surfaces on the circuit board of the power supply unit. This solution is, however, comparatively complex, since two springs are required per plug version and since the mains plug units must additionally be implemented such that they each consist of two plastic components, viz. the plug contour and a cover, so as to guarantee the touch protection demanded. These parts must be interconnected by means of a precise supersonic welding process, and, in the case of non-optimum welding, the insertion and separation forces between the plug and the plug-in power supply will increase to unacceptable values. Furthermore, the plug unit is not safely locked. It follows that the solution according to this publication is complex, expensive and it offers only a limited process reliability.


US patent 6,320,353 B1 discloses the implementation of a plug system according to IEC 320 for establishing a contact between a plug-in power supply and an exchangeable mains plug unit. This solution, however, requires for each plug the implementation of a complete socket with two spring contacts per plug and it partly requires stamped and bent components for establishing the connection between the spring contacts and the plug pins. Furthermore, the plug housing is here again bipartite so that the necessary touch protection can be guaranteed. Hence, also this construction is comparatively complex and expensive.
Reference US D454.537 S discloses a solution wherein the electric contact between the device and the plug is established by means of two spring contacts, which are arranged in the housing. The number of springs required is reduced in this way. The plug is oriented parallel to the longitudinal side of the device. The spring contacts are here exposed and may twist in the case of inappropriate treatment. Due to the fact that the plug is pushed on in longitudinally arranged guide means, two slots having a width of approx. 4 mm and a length of approx. 20 mm are formed in the plug. The dimensions of these slots exceed the admissible values of the maximum opening width, according to which the maximum dimensions must not exceed 1.8 mm x 4.8 mm. It follows that the structural design shown in this document violates the relevant regulations on electric shock protection.
Furthermore, a locking engagement is established via a plastic spring, which is integrated in the device in question, in the arrangement shown in this publication, said plastic spring including, however, openings to the circuit board, i.e. it only has a limited ESD resistance. Moreover, the plug components for the UK plug each consist of two plastic parts, and this makes the structural design again comparatively complex and expensive.
The Taiwanese publication TW421366Y discloses an arrangement with comparatively broad spring contacts in the housing, said spring contacts being arranged transversely to the longitudinal side. The plug is here connected to the housing in that it is first introduced in a slotted guide means and then pushed on along the housing. Contacting is effected through long longitudinal slots in the plug (approx. 2.5 x 30 mm) directly onto the plug pins. The dimensions of these slots exceed the admissible values of the air and creepage distances. It follows that also in the case of this structural design, the relevant regulations on electric shock protection are violated. A locking engagement is guaranteed by a separate locking bar with an additional spring. Also in this case, the implementation of the plug


housing is bipartite for all plug embodiments, i.e. also this structural design is comparatively complex and therefore expensive.
The published international patent application WO 2004/013937 A1 discloses a plug coupling wherein an exchangeable mains plug is arranged on the housing of a plug-in power supply, the housing having provided thereon a protruding guide web with contact elements and the mains plug being provided with a complementary cavity for accommodating the guide web. The guide web is provided with a recess and the mains plug has arranged thereon a complementary pin for locking engagement with said recess, so that, by means of a suitable movement of the mains plug relative to the housing, the mains plug can be fixed to the housing and a connection can be established between the contact elements of the mains plug and the contact elements of the guide web.
However, the plug coupling according to this reference is disadvantageous insofar as it does, on the one hand, not comply with the relevant standards with regard to air and cree-page distances and insofar as, on the other hand, unlocking of said plug coupling is comparatively difficult to realize.
It is therefore the object of the present invention to provide an improved plug-in power supply with an exchangeable mains plug unit, which complies with the relevant safety standards all over the world, which can be produced inexpensively and easily, and which is also easy to operate.
The present invention is based on the idea of providing an inexpensive, standard conversion plug system for a plug-in power supply, wherein the power supply unit has provided thereon spring-type protruding contacts so that the respective primary-side conversion plug can be attached, said contacts cooperating with mating contacts accommodated in recesses formed in the conversion plug. Each contact pin of the mains plug unit is arranged in a separate recess, the dimensions of which are implemented such that the provisions of the international standard I EC 60884 with regard to touch protection and tracking resistance are fulfilled.
In this way, a plug-in power supply can easily be provided, which can be produced at a reasonable price and which is easy to handle and offers nevertheless improved touch protection and an improved ESD resistance. The handling of the device in its entirety is substan-


tially simplified as far as an exchange of plugs is concerned, and the overall design can be implemented such that a better process reliability will be achieved.
The recesses can e.g. have a rectangular cross-section with dimensions of less than 1.8 mm x 4.8 mm. This complies with the relevant regulations on electric shock protection with regard to the admissible values for air and creepage distances.
When the contact pins are arranged such that they are adapted to be brought into contact with the end faces of the spring contacts in a direction extending essentially along an insertion direction of the mains plug pins in the mains socket, a torque, which could possibly impair the quality of the electric contact, will be prevented from acting on the connection between the conversion plug and the plug-in power supply upon insertion into the mains plug.
According to an advantageous further development of the present invention, the spring contacts are, at least partially, encompassed by a collar. Such a collar protects the spring contacts against damage during an exchange of the mains plug unit. It will be advantageous when such a collar has a U-shaped cross-section, since this will guarantee maximum mechanical safety on the basis of the lowest possible material costs.
According to a particularly simple embodiment, such a collar can be formed integrally with the housing, in particular it can be formed on the housing in the course of an injection moulding process executed for producing the housing from plastic material.
When the mains plug pins are formed integrally with the associated contact pins, this will guarantee maximum stability and the lowest possible contact resistance on the one hand and an easy manufacturing on the other.
The mains plug pins and the contact pins can, in a particularly simple manner, be combined so as to form the mains plug unit by encompassing them by an insulating plastic material by means of injection moulding. This kind of arrangement allows the mains plug unit to be produced as one part, i.e. the production costs will be reduced still further.
According to an advantageous further development of the present invention, the mains plug unit is adapted to be lockingly engaged with the housing. A reliable connection between the two parts can be achieved in this way, but, if necessary, said parts can easily be separated.


Especially by providing on the housing a pocket-like detent spring, which cooperates with a complementary locking opening on the mains plug unit so as to fix said mains plug unit, the releasability of the of the mains plug unit can be realized in a particularly simple and economy-priced manner and it can simultaneously be guaranteed that the device can be handled easily and safely by a user. The detent spring, which is formed integrally with the housing by injection moulding, has the additional advantage that it will improve the ESD resistance.
When the housing has formed thereon a slotted guide means for guiding the mains plug unit during the mounting operation, mounting by the user can be made much more simple. Simultaneously, a maximum position reliability of the contact pins relative to the contact springs will be guaranteed. A structurally very simple solution is here the provision of a slotted guide means that extends in a direction transversely to a direction in which the mains plug pins are inserted into the mains socket.
On the basis of the embodiments shown in the drawing enclosed, the invention will be explained in more detail in the following. Similar or corresponding details of the plug-in power supply according to the present invention are provided with identical reference numerals in the figures, in which:
Figure 1 shows a perspective view of a plug-in power supply according to the present invention in accordance with a first advantageous embodiment;
Figure 2 shows a side view of the arrangement according to Fig. 1;
Figure 3 shows a rotated perspective view of the arrangement according to Fig. 1;
Figure 4 shows a top view of a housing according to a further advantageous embodiment;
Figure 5 shows a detail Y of Fig. 4;
Figure 6 shows a side view of the housing according to Fig. 4, rotated by 90°;
Figure 7 shows a section through the housing of Fig. 6 along the intersection line A-A;
Figure 8 shows a section through the housing of Fig. 4 along the intersection line B-B;


Figure 9 shows a side view of a first mains plug unit, which is adapted to be inserted into the housing according to Fig. 4 to 8;
Figure 10 shows a view of the mains plug unit according to Fig. 9, rotated by 90°;
Figure 11 shows a section through the arrangement according to Fig. 10 along the intersection line C-C;
Figure 12 shows a section through the arrangement according to Fig. 10 along the intersection line D-D;
Figure 13 shows a top view of a mains plug unit according to a further advantageous embodiment;
Figure 14 shows a section through the mains plug unit according to Fig. 13 along the intersection line E-E;
Figure 15 shows a section through the mains plug unit according to Fig. 13 along the intersection line F-F;
Figure 16 shows a top view of a mains plug unit according to another advantageous embodiment;
Figure 17 shows a section through the mains plug unit according to Fig. 16 along the intersection line U-U;
Figure 18 shows a section through the mains plug unit according to Fig. 16 along the intersection line W-W;
Figure 19 shows a top view of a mains plug unit according to another advantageous embodiment;
Figure 20 shows a section through the mains plug unit according to Fig. 19 along the intersection line G-G;
Figure 21 shows a section through the mains plug unit according to Fig. 19 along the intersection line H-H;


Figure 22 shows a top view of the mains cable adapter which is adapted to be inserted into the housing according to Fig. 4;
Figure 23 shows a section through the mains cable adapter along the intersection line l-l;
Figure 24 shows a view of the mains cable adapter according to Fig. 22, rotated by 90°.
Referring to Fig. 1, the plug-in power supply 100 according to the present invention, which comprises exchangeable mains plug units 102,104,106 and 108, will now be explained in detail. The exchangeable mains plug units 102 to 108 comply, with regard to their plug contour and the implementation of the mains plug pins 110, with the standards of various countries, such as the European standard EN 50075 for the mains plug unit 102, the US standard for the mains plug unit 104, the British standard for the mains plug unit 106 as well as the Australian standard for the mains plug unit 108. This selection is, however, only exemplary, and the person skilled in the art will be aware of the fact that the principles according to the present invention can be applied to arbitrary other plug contours and pin shapes.
As can be seen from Fig. 1, the plug-in power supply according to the present invention comprises a housing 112 having arranged therein a voltage transformer module, which is here not shown, for converting a mains voltage into a required low voltage. The opening 114 serves to pass therethrough a low voltage cable which is here not shown and which leads to a consumer. The housing 112 may, however, also be a component of a consumer.
According to the present invention, the housing 112 has provided thereon spring contacts 116, which are connected in the interior of the housing to input terminals of the voltage transformer module. The mains plug pins 110 are formed integrally with respective contact pins 118 in the mains plug unit 102 to 108, said contact pins 118 establishing with the spring contacts 116 an electric connection to the mains socket (which is here not shown).
The contact pins 118 are accommodated in small, 1.8 mm x 4.8 mm, rectangular recesses so as to observe the relevant regulations on electric shock protection.


The plug contour for all types of plugs can advantageously be implemented in a single process step by encompassing the plug pins 110 by injection moulding. Subsequent expensive process steps are therefore rendered unnecessary.
In the embodiment shown in Fig. 1, the spring contacts 116 are prevented from being twisted, during mounting of the exchangeable mains plug unit 102 to 108, by means of projections of plastic material 120, which are formed integrally with the housing by injection moulding and which are implemented in the form of a U-shaped collar, said projections of plastic material 120 and the wall of the housing 112 encompassing these springs.
The fact that the exchangeable mains plug unit 102 to 108 may be fabricated as one piece additionally implies that no supersonic welds are necessary and that, consequently, a particularly high stability can be achieved.
The arrangement according to the present invention is additionally characterized by a locking arm 122, which is formed integrally with the housing 112 by injection moulding and which, for locking the exchangeable mains plug unit 102 to 108, cooperates with a complementary locking opening 124 provided in said exchangeable mains plug unit. Guiding projections 126 cooperate with a slotted guide groove 128 formed on the housing 112 and used for guiding the mains plug unit 102 to 108 when the said mains plug unit is being mounted on the housing 112.
Additional views of the plug-in power supply 100 according to the present invention are shown in Fig. 2 and 3.
Referring to a synopsis of Fig. 1 to 3, the mounting of the exchangeable mains plug unit 102 will be explained in detail in the following.
Assuming first that no mains plug unit 102 to 108 is mounted on the housing 112, a mains plug unit according to the standard of the desired country, e.g. for Europe the mains plug unit 102, is chosen and oriented such that the mains plug pins 110 are directed away from the housing 112 and that the projections 126 are essentially located above the associated insertion openings 130.


Subsequently, the mains plug unit is moved in direction 132 until the guiding projections 126 are able to cooperate with the slotted guide groove 128. The direction 132 extends essentially parallel to the direction of insertion in the mains socket.
In the next mounting step, the mains plug unit 102 is moved in a direction 134 transversely to the direction of insertion in the mains socket until the locking arm 122 engages the locking opening 124. In the course of this process, the mains plug unit 102 is guided in the slotted guide groove 128. The plug-in power supply 100 is now ready for operation.
For removing the mains plug unit 102, it will suffice to press the operating surface 136 on the locking arm 122 so as to release the locking connection so that the mains plug unit can be pushed in a direction opposite to said direction 134 and can then be removed in a direction opposite to the direction 132.
A further embodiment of the plug-in power supply according to the present invention will be explained in detail making reference to Fig. 4 to 24.
Other than in the case of the hitherto described embodiments, the openings in the plug modules, through which a contact between the spring contact and the mains pin is established, have been reduced to a width of 0.9 mm. This has been done for observing the British standard, without using an additional shutter. The accessibility of the contacts can be tested by a test finger having a diameter of 1 mm. Accordingly, the width of the contact springs was adapted to approx. 0.8 mm
Fig. 4 shows the side of the housing 112 on which the mains plug unit 102 to 108 is mounted. In the inserted condition of the mains plug unit 102 to 108, the spring contacts 116 are in contact with the mains plug pins 110. As can be seen from the detail Y shown in Fig. 5, the spring contacts 116 have particularly small dimensions so as to be able to electrically contact the contacts which are, in the associated mains plug units, accommodated in recesses that are very small according to the present invention.
The spring contacts 116 may e.g. have a width of only 0.8 mm and a length b of 2.5 mm. A mounting opening for inserting the spring contacts 116 in the housing 112 has e.g. a dimension c of 1.8 mm. For allowing the spring contact to be inserted in the associated standard recesses of the mains plug unit, the height h of the spring contact, which can be seen in Fig. 8, should be approx. 6.2 mm.


In order to prevent such fine structures from being damaged during operation, the present invention is so conceived that the spring contacts 116 are protected by a substantially U-shaped collar 120. Twisting of the spring contacts 116 during replacement of the mains plug unit is to be prevented to a very large extent by means of this collar 120 in combination with the guiding elements that have already been described with regard to the preceding embodiment.
As can be seen from Fig. 7 and 8, the contact springs are inserted into vertical guide means on the inner surface of the sidewall of the housing (front) so that the blocking areas can be reduced, since the primary contact is arranged on the outer edge of the circuit board.
An exchangeable mains plug unit 102 according to the European standard, which can be inserted in the housing 112, is shown in Fig. 9 to 12. As has already been mentioned, the whole mains plug unit 102 can be produced in a particularly simple manner by encompassing the mains plug pins 110 by injection moulding in a single process step.
For electrically contacting the mains plug pins 110, very small, substantially rectangular openings or recesses 140 are formed in the mains plug unit. This will guarantee that an exchangeable mains plug unit 102, which remained in the mains socket, cannot do harm to a user, even if the rest of the housing 112 should not be attached for some reason or other. In other words, the separate exchangeable mains plug unit 102 to 108 according to the present invention fulfils, as such, already all the relevant regulations on touch protection and tracking resistance, in particular the provisions of the international standard (EC 60884.
According to the present invention, the depth d of the opening 140 is at least 5 mm (plus a funnef-shaped insertion chamfering g of e.g. 0.5 mm) and the width e is less than 1 mm. The length f should be approx. 5 mm, e.g. 4.8 mm, according to the present invention.
Analogously, the additional mains plug units 104 to 108, which are shown in Fig. 13 to 21, can be mounted on the housing 112, the openings 140 having each the small dimensions according to the present invention.
Although it has always been assumed in connection with the hitherto described embodiments that the mains plug unit 102 to 108 is directly provided with mains plug pins 110 and that the plug-in power supply 100 according to the present invention is directly inserted in the mains socket, it is, in accordance with a further advantageous embodiment, also possi-


ble to provide a mains cable adapter 142 which, instead of the mains plug units 102 to 108, is connected to the housing so that the plug-in power supply 100 is connected to the socket via a mains cable which is adapted to be connected to the plug-in connector 144. The plug-in connection 144 can e.g. be implemented as a so-called shaver plug connection, which is known per se.
It follows that the present invention allows to overcome the shortcomings of the prior art and to produce an inexpensive plug-in device with a conversion plug while observing the relevant standards, making use of the smallest possible number of parts and process steps, and achieving the highest possible user comfort.


We Claims:
1. A plug-in power supply for supplying a consumer with a low voltage, the plug-in
power supply (100) comprising a housing (112) having arranged therein a voltage
transformer module for converting a mains voltage into the required low voltage, and
an exchangeable mains plug unit (102,104,106,108) with at least two mains plug
pins (110) for connecting the voltage transformer module to a mains socket,
wherein the housing has provided thereon at least two spring contacts (116) which are electrically connected to the voltage transformer module,
wherein the mains plug unit comprises at least two contact pins (118) which cooperate with the spring contacts for establishing an electric contact with the mains plug pins, and
wherein each contact pin is arranged in a corresponding separate recess having dimensions which are chosen to comply with the provisions of the international standard I EC 60884 with regard to touch protection and tracking resistance.
2. A plug-in power supply according to claim 1, wherein the recesses have a rectangular cross-section with dimensions of less than 1.8 mm x 4.8 mm.
3. A plug-in power supply according to at least one of the preceding claims, wherein the contact pins are arranged such that they are adapted to be brought into contact with the end faces of the spring contacts in a direction (132) extending essentially along an insertion direction of the mains plug pins in the mains socket.
4. A plug-in power supply according to at least one of the preceding claims, wherein the spring contacts are, at least partially, encompassed by a collar (120).
5. A plug-in power supply according to claim 4, wherein the collar has a U-shaped cross-section.
6. A plug-in power supply according to claim 4 or 5, wherein the collar is formed integrally with the housing.


7. A plug-in power supply according to at least one of the preceding claims, wherein a respective mains plug pin (110) is formed integrally with an associated contact pin (118).
8. A plug-in power supply according to at least one of the preceding claims, wherein the mains plug pins and the contact pins are combined so as to form the mains plug unit in that they are encompassed by an insulating plastic material by means of injection moulding.
9. A plug-in power supply according to at feast one of the preceding claims, wherein the mains plug unit is adapted to be lockingly engaged with the housing.
10. A plug-in power supply according to claim 9, wherein the housing comprises a pocket-like, resilient locking arm (122), said locking arm cooperating with a complementary locking opening (124) on the mains plug unit so as to fix said mains plug unit
11. A plug-in power supply according to at least one of the preceding claims, wherein the housing has formed thereon a slotted guide means (128) for guiding the mains plug unit during the mounting operation.
12. A plug-in power supply according to claim 11, wherein the slotted guide means extends in a direction (134) transversely to a direction in which the mains plug pins are inserted into the mains socket.
13. A plug-in power supply according to at least one of the preceding claims, wherein the plug unit comprises a mains cable adapter with a plug-in connection and a flexible mains cable, and the mains plug pins are provided in the form of a separate mains plug.



Abstract
The present invention relates to a plug-in power supply for supplying a consumer with a low voltage, and in particular to a plug-in power supply wherein the mains plug unit is exchangeable in the form of a conversion plug system. The plug-in power supply comprises a housing having arranged therein a voltage transformer module for converting a mains voltage into the required low voltage, and an exchangeable mains plug unit with at least two mains plug pins. In order to provide a improved plug-in power supply with an exchangeable mains plug unit, which complies with the relevant safety standards all over the world, which can be produced inexpensively and easily, and which is also easy to operate, the housing has provided thereon at least two spring contacts which are electrically connected to the voltage transformer module, the mains plug unit having arranged thereon at least two contact pins which cooperate with the spring contacts so as to establish an electric contact with the mains plug pins, and each contact pin being arranged in a separate recess which is associated therewith and the dimensions of which are implemented such that the provisions of the international standard IEC 60884 with regard to touch protection and tracking resistance are fulfilled.

Documents:

381-MUMNP-2008-ABSTRACT(GRANTED)-(26-5-2012).pdf

381-mumnp-2008-abstract.doc

381-mumnp-2008-abstract.pdf

381-MUMNP-2008-CANCELLED PAGES(17-5-2012).pdf

381-MUMNP-2008-CHINA DOCUMENT(6-3-2012).pdf

381-MUMNP-2008-CLAIMS(AMENDED)-(17-5-2012).pdf

381-MUMNP-2008-CLAIMS(AMENDED)-(20-2-2012).pdf

381-MUMNP-2008-CLAIMS(GRANTED)-(26-5-2012).pdf

381-MUMNP-2008-CLAIMS(MARKED COPY)-(17-5-2012).pdf

381-MUMNP-2008-CLAIMS(MARKED COPY)-(20-2-2012).pdf

381-mumnp-2008-claims.doc

381-mumnp-2008-claims.pdf

381-mumnp-2008-correspondence(2-5-2008).pdf

381-MUMNP-2008-CORRESPONDENCE(29-3-2012).pdf

381-MUMNP-2008-CORRESPONDENCE(IPO)-(28-5-2012).pdf

381-mumnp-2008-correspondence-others.pdf

381-mumnp-2008-correspondence-received.pdf

381-mumnp-2008-description (complete).pdf

381-MUMNP-2008-DESCRIPTION(GRANTED)-(26-5-2012).pdf

381-MUMNP-2008-DRAWING(20-2-2012).pdf

381-MUMNP-2008-DRAWING(28-2-2008).pdf

381-MUMNP-2008-DRAWING(GRANTED)-(26-5-2012).pdf

381-mumnp-2008-drawings.pdf

381-MUMNP-2008-FORM 1(20-2-2012).pdf

381-mumnp-2008-form 1(25-4-2008).pdf

381-MUMNP-2008-FORM 2(GRANTED)-(26-5-2012).pdf

381-mumnp-2008-form 2(title page)-(28-2-2008).pdf

381-MUMNP-2008-FORM 2(TITLE PAGE)-(GRANTED)-(26-5-2012).pdf

381-MUMNP-2008-FORM 26(17-5-2012).pdf

381-mumnp-2008-form 26(25-4-2008).pdf

381-mumnp-2008-form 3(2-5-2008).pdf

381-MUMNP-2008-FORM 3(20-2-2012).pdf

381-mumnp-2008-form-1.pdf

381-mumnp-2008-form-18.pdf

381-mumnp-2008-form-2.doc

381-mumnp-2008-form-2.pdf

381-mumnp-2008-form-3.pdf

381-mumnp-2008-form-5.pdf

381-mumnp-2008-form-pct-ib-304.pdf

381-MUMNP-2008-JAPANESE DOCUMENT(6-3-2012).pdf

381-MUMNP-2008-KOREAN DOCUMENT(6-3-2012).pdf

381-mumnp-2008-pct-search report.pdf

381-MUMNP-2008-PETITION UNDER RULE 137(20-2-2012).pdf

381-MUMNP-2008-REPLY TO EXAMINATION REPORT(20-2-2012).pdf

381-MUMNP-2008-REPLY TO EXAMINATION REPORT(6-3-2012).pdf

381-MUMNP-2008-REPLY TO HEARING(17-5-2012).pdf

381-MUMNP-2008-US DOCUMENT(20-2-2012).pdf

381-mumnp-2008-wo international publication report(28-2-2008).pdf

abstract1.jpg


Patent Number 252668
Indian Patent Application Number 381/MUMNP/2008
PG Journal Number 22/2012
Publication Date 01-Jun-2012
Grant Date 26-May-2012
Date of Filing 28-Feb-2008
Name of Patentee FRIWO GERAETEBAU GMBH
Applicant Address VON-LIEBIG-STRASSE 11, 48346 OSTBEVERN.
Inventors:
# Inventor's Name Inventor's Address
1 VAN GEN HASSEND, KAY AM PLESSEN 70, 49205 HASBERGEN.
2 BERNSMANN, ULRICH SCHNEPFENWEG 8, 48231 WARENDORF.
3 WU,YONGGUI NO.16 ZHOUSHA VILLAGE, YONGFENG CITY, 331509 JIANG XI PROVINCE.
4 WEGMANN, MANFRED GESCHWISTER-SCHOLL-STR. 19, 48236 OSTBEVERN.
5 BOTHE, MICHAEL IN DER WEEDE 154, 48163 MUNSTER.
PCT International Classification Number H01R13/66
PCT International Application Number PCT/EP2006/007065
PCT International Filing date 2006-07-18
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 102005 041116.9 2005-08-03 Germany