EP0696890B1 - Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire - Google Patents

Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire Download PDF

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Publication number
EP0696890B1
EP0696890B1 EP94913245A EP94913245A EP0696890B1 EP 0696890 B1 EP0696890 B1 EP 0696890B1 EP 94913245 A EP94913245 A EP 94913245A EP 94913245 A EP94913245 A EP 94913245A EP 0696890 B1 EP0696890 B1 EP 0696890B1
Authority
EP
European Patent Office
Prior art keywords
lock
ejection
locking
ejection means
lock housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94913245A
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German (de)
English (en)
Other versions
EP0696890A1 (fr
Inventor
Bengt Andersson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Broderna Holmbergs Fabriks AB
Original Assignee
Broderna Holmbergs Fabriks AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Broderna Holmbergs Fabriks AB filed Critical Broderna Holmbergs Fabriks AB
Publication of EP0696890A1 publication Critical patent/EP0696890A1/fr
Application granted granted Critical
Publication of EP0696890B1 publication Critical patent/EP0696890B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2546—Details
    • A44B11/2549—Fastening of other buckle elements to the main buckle
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2507—Safety buckles actuated by a push-button
    • A44B11/2523—Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and in the same direction as the fastening action
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2546—Details
    • A44B11/2561—Tongue elements

Definitions

  • the present invention relates to a lock for a safety belt having two hip strap parts and at least two further strap parts.
  • Safety belts of this kind are preferably used as vehicle safety belts for children.
  • the safety belt includes two shoulder straps which are attached behind the seat and possibly also a crotch strap which is attached below in front of the seat.
  • the lock comprises a lock housing which is attached to one hip strap part and a lock tongue for cooperation with the lock housing, said lock tongue being attached to the other hip strap part.
  • Both shoulder strap parts are provided with fittings to be thread on to the lock tongue and held in place on the tongue in abutment against the lock housing when the lock tounge together with the fittings thread thereupon have been brought into locking engagement with the lock mecnanism on the lock housing.
  • the lock mechanism of this prior art lock comprises an ejection member which is is movable within the lock housing and is spring biassed towards the entrance opening for the lock tongue in the lock housing.
  • the ejection member comprises a disc shaped body having a transversally extending part and two ejection branches protruding in parallel from the ends of the transversally extending part in the direction towards the entrance opening, said ejection branches protruding into the entrance opening when the lock is open.
  • the ejection member When the ejection member is positioned in its front position, it also serves as a stop means, preventing the locking latch to move into locking position. A release of the locking latch thus requires that both ejection branches are simultaneously pushed into the lock housing to such an extent that the ejection member is displaced out of locking position, so that the locking latch is left free to perform a locking movement when the lock tongue has been inserted into locking position in the lock.
  • the fitting which in locking position is intended to abut the lock housing is provided with two fixed protrusions extending towards the entrance opening and arranged so as to displace the ejection member inwardly into the lock when the lock tongue together with fittings thread on the lock tongue, is pushing the ejection member inwardly into the lock to release the blocking of the locking latch so that locking is obtained.
  • the lock in accordance with the present invention comprises, in a manner known per see, a lock housing for attachment on one hip strap part, said lock housing enclosing a lock mechanism to be actuated manually, a lock tongue to be fastened on the other hip strap, said lock tongue being insertable into a entrance opening of the lock housing for cooperation with the lock mechanism, and at least two fittings to be coupled together with lock housing and lock tongue when those are brought into locking engagement with each other.
  • the object of the present invention is to provide a safety belt, having a simple and reliable design, in which the disadvantages with the safety belts of the kind mentioned above have been eliminated, and which thus prevents locking of the safety belt if all strap parts have not been attached correctly, and which also provides an extra security preventing release of the lock when only one ejection branch is pressed into the lock housing.
  • the lock according to the invention and shown on figs 1-3 is intended for a safety belt with hip straps and two shoulder straps of the kind used as car safety belts for children.
  • the lock comprises a lock housing 1 and a lock tongue 2 and two shoulder strap fittings 3 and 4.
  • the lock housing 1 comprises a lock mechanism 5, including a metallic frame comprising two parallel metal plates 6, 7 between which the lock tongue 2 shall be introduced.
  • the lock mechanism further comprises a locking latch 8, which is swingably mounted, which by means of a spring arrangement, not shown, can be caused to swing between two extreme positions: one locking position in which the locking latch 8 engages into an opening 9 of the lock tongue 2, and an idle extreme position.
  • the locking latch may be caused to perform a snap-in movement between said extreme positions.
  • a release button 15 Disposed in the casing of the lock housing 1 is a release button 15 which is displaceable against spring bias between a front and a rear position, said release button being arranged so that when being displaced to its rear position, it causes the locking latch 8 to snap from locking position into idle position.
  • the metal frame extends out of the lock housing 1 at one side thereof, forming a lug 10 for one of the hip strap parts 11.
  • the lock housing is formed with a protruding nose portion 16, delimiting the entrance opening through which the lock tongue 2 shall be introduced into the lock and be locked in the lock mechanism 5.
  • the other hip strap part 12 shall be attached to the lock tongue 2, and both fittings 3 and 4 shall be attached, each one to the corresponding part of said two shoulder strap parts of the safety belt.
  • the lock mechanism comprises, in a manner known per see, an ejection means 17.
  • the ejection means comprises a plane, substantially U-shaped disc, which is displaceably disposed in the space between plates 6 and 7 of the lock mechanism.
  • the ejection means comprises a transversely extending basic portion 18 with two ejection branches 19 protruding from the respective end parts of the basic portion, said ejection branches having their ends extending into the nose portion 16 of the lock housing 1 in the vicinity of the entrance opening formed by the nose portion 16.
  • the basic portion 18 of the ejections means is provided with a centrally protruding pin 20, extending through an opening 22 in the rear wall 21 of the locking hook 8.
  • a spring 23 is thread upon the pin 20, said spring urging the ejection means towards a front stop position in abutment against an intermediate wall 24 of said locking hook 8.
  • the basic portion 18 of the ejections means is on opposite sides of the pin 20 provided with two symmetrically with respect to the pin 20 protruding stop abutments in the form of two protruding abutment pins 25, protruding a shorter distance than the pin 20, said abutment pins 25 by abutting the rear wall 21 of the locking hook delimiting the displacement of the ejection means into the lock mechanism.
  • a recess 26 is formed in the side of the basic portion 18 facing the enctrance opening, said recess having a width corresponding to the width of the intermediate wall 24 of the locking hook just in front of the recess 26. Underneath said recess the intermediate wall of the locking hook extends outwardly on opposite sides of the recess and forms two stop abutments 27 for cooperation with the edge portions of the base portion 18 of the ejection means which laterally delimit said recess therein. When the ejection means is in its front stop position, said edge portions are positioned above the stop abutments 27 of the locking hook 8, thereby preventing the locking hook from snapping into locking position.
  • the ejection means 17 For releasing the locking hook the ejection means 17 thus must be displaced rearwardly, into the locking mechanism to such an extent, that said edge portions of the recess 26 of the basic portion 18 of the ejection means 17 are brought out of locking engagement with the stop abutments 27 of the locking hook.
  • both shoulder strapfittings 3 and 4 thread upon the lock tongue 2, shall be moved into abutment against the lock housing 1.
  • the shoulder strap fitting 3 which shall be in direct abutment against the lock housing 1 is formed with an abutment surface facing the lock housing, being shaped complementary to the corresponding surface of the lock housing 1, so that the fitting and the lock housing fit with each other in a puzzle-like manner.
  • the shoulder strap fitting 3 is provided with a through opening 30 designed so as to provide guiding cooperation with the nose portion 16 of the lock housing 1 when the fitting is thread thereupon.
  • a protrusion 31 extending into the opening 30 and formed as a rigid part of the fitting, the free end of said protrusion which is facing the lock housing 1 being positioned just opposite the corresponding ejection branch extending into the entrance opening and in contact therewith when the fitting has been brought into abutment against the lock housing 1.
  • the other shoulder strap fitting 4 is designed so that its surface abutting said first shoulder strap fitting 3 has a complementary form with the corresponding surface of the fitting 3.
  • the second shoulder strap fitting 4 is also formed with a through opening 32, being dimensioned to provide guiding cooperation with the nose portion 16 of the lock housing when both fittings 3, 4 are moved into engagement with the lock housing.
  • the upper edge of the through opening 32 is provided with a protrusion formed as a rigid part of the fitting extending into the opening 32 and in a direction towards the first fitting 3, so that it extends a small distance into the opening 30 of said fitting when the fittings are in abutment with each other.
  • the protrusion 33 is so shaped, that the free end thereof facing the lock housing is positioned just opposite the corresponding ejection branch 19 extending into the entrance opening, and in contact therewith when both fittings 3, 4 have been brought into engagement with the lock housing 1.
  • the lock tongue 2 which is to be moved through the openings 32 and 30 of the shoulder strap fittings 4, 3 and together with them into engagement with the lock housing 1, is at the end to be connected to the hip strap part formed with a gripping body 34, the surface thereof abutting the fitting 4 having a complementary form with the corresponding surface of said fitting.
  • Lock housing 1, shoulder strap fittings 3, 4 and the gripping body of the lock tongue 2 thus have a form engagement with each other in a puzzle-like manner, thereby preventing that the parts are coupled together in an incorrect order.
  • the safety belt lock described with reference to the figs 1-3 is intended for simultaneous locking of four strap parts, i.e. two hip strap parts and two shoulder strap parts.
  • Fig 4 illustrates in a corresponding manner as in fig 3 an embodiment according to the invention of a safety belt lock, which renders possible simultaneous locking of five strap parts, i.e. two hip strap parts, two shoulder strap parts and a third part, in the following called crotch strap part and being intended to be attached in the floor of the vehicle in front of the seat.
  • the safety belt lock according to fig 4 comprises, like the lock previously described, a lock housing 1 encapsulating a lock mechanism having a locking hook 8 and an ejection means 17.
  • the lock further comprises a lock tongue 2 and two shoulder strap parts 3 and 4.
  • Lock housing 1, lock mechanism 5 and lock tongue 2 and safety belt fittings 3 and 4 correspond where applicable with the description of corresponding description parts in connection with figs 1-3.
  • the embodiment according to fig 4 differs from the embodiment previously described in that it should be possible to attach and firmly locking a fifth strap part in the lock simultaneously with the remaining strap parts.
  • the crotch strap is provided with a crotch strap fitting 28 to which the crotch strap is attached and which is designed so that it can be introduced into a recess 29 at the lower part of the shoulder strap fitting 3.
  • the crotch strap fitting is further at the upper portion thereof formed with an outwardly extending protrusion 38, corresponding to the protrusion 31 in the embodiment according to figs 1-3.
  • the shoulder strap fitting 3 is thus completely in lack of protrusions.
  • the crotch strap fitting 28 is initially positioned into the recess 29 of the shoulder strap fitting 3, whereupon the shoulder strap fittings 3 and 4 are thread upon the lock tongue 2, which together with said fittings is brought into engagement with the lock housing 1 in a corresponding manner as previously described.
  • the five point safety belt lock illustrated in fig 4 may also be caused to lock only provided that all strap part fittings have been correctly attached.
  • Fig 5 illustrates a variant of an embodiment of a five point lock according to the invention.
  • the shoulder strap fitting 3 is identical with the corresponding shoulder strap fitting according to figs 1-3.
  • the shoulder strap fitting 4, however, in this embodiment has been joined with the gripping body 36 of the lock tongue 2, so that one shoulder strap part as well as one of the hip strap parts is connected with fitting 36.
  • a crotch strap part 35 is being thread upon the lock tongue 2, said crotch strap fitting being provided with a protrusion 37 at the upper part thereof corresponding to the protrusion 33 of the embodiment according to figs 1-3.
  • Figures 6-8 schematically illustrate some different functional positions of the ejection means in the lock mechanism.
  • Fig 6 shows the position of displacement into the lock mechanism achieved by the ejection means under the influence of inserting forces which simultaneously act upon both ends of the ejection branches 19 which protrude into the insertion opening, and in which position the blocking of the looking hook ceases due to the fact that the edge portions of the recess 26 have been displaced out of blocking engagement with the stop abutment 27 on the locking hook.
  • the pin 20 on the base portion 18 of the ejection means is then displaced out through the opening 22 in the rear wall of the locking hook, simultaneously compressing spring 23.
  • the displacement of the ejection means 17 into the lock mechanism is stopped when its abutment pins 25 come into abutment with the rear wall 21 of the locking hook. Since the blocking of the locking hook thus has ceased, the locking hook can snap into a locking position under the influence of the spring arrangement, not shown.
  • Fig 7 shows the ejections means 17 in its former blocking position in the lock mechanism.
  • This blocking position is obtained when the release button 15, which is displaceable in the lock housing, has been moved into its rear position and then has caused the locking hook 8 to snap out of locking position, whereby the ejection means 17, under the influence of the spring force from the spring 23, is being displaced into the blocking position, simultaneously pushing out the shoulder strap fittings 3,4, also including the lock tongue 2 in this movement.
  • the movement of the ejection means 17 between the positions shown in figs 4 and 5 is thus obtained through parallel displacement of the ejection means in the lock mechanism.
  • This parallel displacement movement is not guide controlled in the lock mechanism, but the ejection means 17 is shaped so that a certain inclined position thereof within the lock mechanism is allowed.
  • Fig 8 illustrates such an inclined position of the ejection means, caused by the fact that only one of the ejection branches 19 is being pressed inwardly towards the lock mechanism, for instance due to the fact that only one shoulder strap part 3 has been thread upon the lock tongue 2 and is pressed against the lock housing 1.
  • the ejection means 17 is then subject to an exctrically attacking force causing the ejection means to perform a swinging movement sideways, as illustrated in fig 8. It is true the ejection means hereby is being moved inwardly into the lock mechanism, so that the blocking at one side of the locking hook ceases, but as a result of the swinging movement in the sideways direction of ejection means, the blocking will still remain at the opposite side of the locking hook.
  • the opening 22 in the rear wall of the locking hook is dimensioned so that it allows sufficient movement sideways of the pin 20 upon sideways swinging movements of the ejection means 17.
  • the insertion opening in the locking house should further have sufficient width in order to allow a certain movement sideways of the ejection branch 19 when the ejection means is subject to excentric actuation.
  • Fig 9 illustrates a preferred design of both abutment pins 25 of the ejection means.
  • the abutment pins 25 are, as appears from the figure, obliquely cut, so that the end portion forms a point closest to the opening 22 through which the pin 21 protrudes. If an introduction force is applied on only one of the ejection branches 19, thereby causing the ejection means to move into the lock mechanism under certain sideways swinging movement, until the abutment pin 25, by means of its point abuts the rear wall 21 of the locking hook, the insertion force imparts a moment to the abutting pin 25, which acts in the same direction as the sideways swinging moments imparted to the ejection means 17 from the action of the introduction force on one of the ejection branches 19.
  • the moments excerted by the insertion force on the abutting pin 25 would be able to counteract the moment which otherwise acts upon the ejection means, with the risk that the ejection means 17 could swing out of blocking position with the risk that the ejection means 17 could swing out of the blocking position and rendering possible unintentional locking of the lock in an incompletely coupled condition. There is a risk of this unwanted effect also if the abutment pins 25 are cut in a right angle.

Landscapes

  • Buckles (AREA)
  • Emergency Lowering Means (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

Dispositif de verrouillage pour ceintures de sécurité possédant deux parties de sangle de hanches et au moins deux parties de sangle supplémentaire. Ledit dispositif de verrouillage comporte un boîtier fixé à l'une des parties de sangle de hanches, ce boîtier comprenant un mécanisme de verrouillage doté d'un élément de libération à actionnement manuel, une lame (2) de verrouillage fixée à l'autre partie de la sangle de hanches, ladite lame s'introduisant dans une ouverture ménagée dans le boîtier de verrouillage de manière à coopérer avec le mécanisme de verrouillage, et au moins deux raccords (3, 4) adaptés pour être reliés au boîtier et à la lame lorsqu'ils sont amenés en contact de verrouillage les uns avec les autres. Un dispositif d'éjection (17) placé dans le boîtier et sollicité par ressort en direction de l'ouverture d'introduction, possède deux branches (19) faisant saillie dans l'ouverture d'introduction. Lorsqu'il se trouve dans sa position avant, le dispositif d'éjection bloque en position d'inaction un crochet (8) de verrouillage,inclus dans le mécanisme de verrouillage, et lorsqu'il se trouve dans sa position arrière, libère ledit crochet de verrouillage qui peut alors se placer dans sa position de verrouillage.

Claims (4)

  1. Verrou pour ceintures de sécurité ayant deux parties de sangle ventrale et au moins deux parties de sangle supplémentaire, ledit verrou comportant un boîtier (1) de verrou destiné à être attaché à l'une des parties de sangle ventrale, ledit boîtier de verrou comportant un mécanisme (5) de verrou ayant un élément (15) de libération pouvant être actionné manuellement, une languette (2) de verrou destinée à être fixée à l'autre partie de sangle ventrale, ladite languette de verrou pouvant être insérée dans une ouverture d'insertion du boîtier (1) de verrou pour coopérer avec le mécanisme (5) de verrou, et au moins deux pièces supplémentaires (3, 4) destinées à être accouplées entre elles avec le boîtier (1) de verrou et la languette (2) de verrou en les amenant dans une prise de verrouillage entre eux, le mécanisme de verrouillage comportant un moyen (17) d'éjection qui est rappelé par ressort vers l'ouverture d'insertion, ledit moyen d'éjection ayant deux branches (19) d'éjection faisant saillie dans l'ouverture d'insertion, ledit moyen d'éjection étant agencé de façon à arrêter un crochet (8) de verrouillage incorporé dans le mécanisme de verrou dans une position inactive dudit crochet lorsque ledit moyen d'éjection est dans sa première position, et à libérer le crochet de verrouillage pour qu'il se déplace jusque dans une position de verrouillage lorsque le moyen d'éjection est dans sa position arrière, caractérisé en ce que le boîtier (1) du verrou est formé de façon à comporter une partie de nez (16) en saillie délimitant ladite ouverture d'insertion dans laquelle lesdites branches (19) d'éjection pénètrent, au moins lesdites deux pièces supplémentaires (3, 4) étant traversées d'une ouverture dimensionnée pour une coopération de guidage avec ladite partie de nez (16) lorsque lesdites pièces supplémentaires sont enfilées sur elle, et en ce que lesdites deux pièces complémentaires comportent chacune une seule saillie (31, 33) qui est reliée rigidement à ladite pièce, ladite saillie, lorsque les pièces (3, 4) sont en butée l'une contre l'autre et contre le boîtier (1) du verrou, étant amenée à venir en butée contre l'extrémité de la branche d'éjection respective (19) pénétrant dans ladite ouverture d'insertion.
  2. Verrou selon la revendication 1,
       caractérisé en ce que chacune desdites saillies desdites pièces supplémentaires est réalisée sous la forme d'une partie d'un seul bloc avec la pièce respective, lesdites saillies s'étendant vers l'extérieur en direction de la branche d'éjection respective (19).
  3. Verrou selon la revendication 1 ou la revendication 2,
       caractérisé en ce que le moyen d'éjection (17) comporte, sur son côté tourné à l'écart de l'ouverture d'insertion dans le boîtier (1) du verrou, deux ergots (25) de butée, disposés symétriquement, pour délimiter la longueur d'insertion du moyen d'éjection (17) dans le mécanisme du verrou en butant contre une paroi située en arrière.
  4. Verrou selon la revendication 3,
       caractérisé en ce que l'extrémité libre de chaque ergot (25) de butée est coupée obliquement afin que sa partie extrême forme un bout s'effilant en direction de l'axe central du verrou.
EP94913245A 1993-04-20 1994-04-20 Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire Expired - Lifetime EP0696890B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9301299A SE501154C2 (sv) 1993-04-20 1993-04-20 Lås till säkerhetsbälte med två midjebandspartier och minst två ytterligare bandpartier
SE9301299 1993-04-20
PCT/SE1994/000351 WO1994023607A1 (fr) 1993-04-20 1994-04-20 Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire

Publications (2)

Publication Number Publication Date
EP0696890A1 EP0696890A1 (fr) 1996-02-21
EP0696890B1 true EP0696890B1 (fr) 1997-03-19

Family

ID=20389628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94913245A Expired - Lifetime EP0696890B1 (fr) 1993-04-20 1994-04-20 Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire

Country Status (5)

Country Link
EP (1) EP0696890B1 (fr)
AU (1) AU6547694A (fr)
DE (1) DE69402190T2 (fr)
SE (1) SE501154C2 (fr)
WO (1) WO1994023607A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0302823D0 (sv) 2003-10-24 2003-10-24 Kendrion Holmbergs Ab Seat Belt Arrangements for Child Safety Seats
US7252342B2 (en) 2004-04-13 2007-08-07 Graco Children's Products Inc. Child restraint assembly for child vehicle seat

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441642B (sv) * 1984-03-23 1985-10-28 Holmbergs Fab Ab Brdr Las till sekerhetsbelten
GB8527587D0 (en) * 1985-11-08 1985-12-11 Britax Excelsior Tongue & buckle fasteners
DE3622768A1 (de) * 1986-07-07 1988-01-21 Riesen & Co Gurtschloss fuer ein gurtband-sicherheitssystem

Also Published As

Publication number Publication date
SE9301299L (sv) 1994-10-21
DE69402190D1 (de) 1997-04-24
AU6547694A (en) 1994-11-08
WO1994023607A1 (fr) 1994-10-27
SE501154C2 (sv) 1994-11-28
DE69402190T2 (de) 1997-10-30
EP0696890A1 (fr) 1996-02-21
SE9301299D0 (sv) 1993-04-20

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