EP0333839A4 - Final closing device for closure member - Google Patents

Final closing device for closure member

Info

Publication number
EP0333839A4
EP0333839A4 EP19880909028 EP88909028A EP0333839A4 EP 0333839 A4 EP0333839 A4 EP 0333839A4 EP 19880909028 EP19880909028 EP 19880909028 EP 88909028 A EP88909028 A EP 88909028A EP 0333839 A4 EP0333839 A4 EP 0333839A4
Authority
EP
European Patent Office
Prior art keywords
striker
support plate
closing device
final closing
rotating means
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.)
Withdrawn
Application number
EP19880909028
Other languages
English (en)
Other versions
EP0333839A1 (fr
Inventor
James Gordon Boyko
Timothy Jack Farrar
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.)
Masco Industries Inc
Original Assignee
Masco Industries Inc
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
Priority claimed from US07/100,940 external-priority patent/US4775178A/en
Priority claimed from US07/119,824 external-priority patent/US4842313A/en
Application filed by Masco Industries Inc filed Critical Masco Industries Inc
Publication of EP0333839A1 publication Critical patent/EP0333839A1/fr
Publication of EP0333839A4 publication Critical patent/EP0333839A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/20—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening
    • E05B81/22—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening by movement of the striker
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E05B15/0205—Striking-plates, keepers, staples
    • E05B15/022—Striking-plates, keepers, staples movable, resilient or yieldable

Definitions

  • This invention relates to a final closing device for a closure member on a vehicle body and, more particularly, to a device for moving a vehicle-mounted closure member (e.g., a sliding door, a hinged door, a trunk lid, or the like) from a nearly closed position, at which a latch bolt engages a striker, to a fully closed position, at which the closure member is sealingly engaged with the vehicle body.
  • a vehicle-mounted closure member e.g., a sliding door, a hinged door, a trunk lid, or the like
  • Vehicle closure members whether hingedly connected to the vehicle body or slidingly mounted thereon, typically require only small forces to move them through the major extent of their opening and closing movement relative to the vehicle body. It is generally only during the final closing movement of the closure member, at which time the closure member must be
  • Typical final closing systems include a final closing device for a closure member of a vehicle.
  • the closure member which may be swingably, slidably or otherwise mounted for movement between open and closed positions on a vehicle body member, generally includes a latch bolt movable between latched and unlatched positions and a latch-bolt-actuating handle or lock member movable between open and closed positions.
  • the final closing device generally also includes a striker support plate mounted on the body member and a striker carried by the striker support plate and projecting outwardly therefrom.
  • Typical door latch and striker assemblies must comply with crash worthiness standards which are established by government agencies and automobile manufacturers. The objective of these standards is to assure that the latch and striker assembly will maintain the closure member in a closed position if the closure member is impacted from the inside. In accordance with these standards, the latch and striker assembly must be capable of withstanding a nominal 1135 kilograms side load and a 1360 kilograms axial load, relative to the direction of the striker pin. Discussion of Invention
  • a final closing device for a closure member which closure member is mounted for movement between open and closed positions on a vehicle body member and includes a latch bolt movable between latched and unlatched positions, characterized by a striker support plate mounted on said body member for rotational movement about an axis perpendicular to said plate, a striker carried by said striker support plate and projecting therefrom at a position eccentrically offset from said axis, and means carried by said body member and connected to said striker support plate for rotating said striker support plate, said striker being movable between extended and retracted positions upon rotation of said striker support plate so that when said striker is in latching engagement with said latch bolt and said striker support plate is rotated, said closure member is moved between a partially open position, away from said body member, and a fully closed position, in sealing engagement therewith.
  • a final closing device for a closure member which closure member is mounted for movement between open and closed positions on a vehicle body member and includes a latch bolt movable between latched and unlatched positions, characterized by a striker support plate mounted on said body member for unidirectional rotational movement about an axis perpendicular to said plate, a striker carried by said striker support plate and projecting therefrom at a position eccentrically offset from said axis, means carried by said body member and connected to said striker support plate for rotating said striker support plate, and means coupled to said rotating means and constructed and arranged to preclude reverse rotation of said striker plate for preventing unintended opening of the closure member when high opening forces are applied thereto, said striker being movable between extended and retracted positions upon rotation of said striker support plate so that when said striker is in latching engagement with said latch bolt and said striker support plate is rotated, said closure member is moved between a partially open position, away from said body member, and a fully
  • FIG 2. is an enlarged, exploded view, with parts cut away for clarity, of the sliding door of FIG. 1, showing the manner in which the door is mounted for sliding movement relative to the vehicle body;
  • FIG. 3 is an elevation view, taken along the line 3-3 of FIG. 1, showing the striker and striker plate of the final closing device;
  • FIG. 4 is a partly diagrammatic sectional view, taken along the line 4-4 of FIG. 3, showing internal details of the final closing device, and showing the relationship of the door edge to a weather seal strip on the vehicle body, under various conditions of closure of the door;
  • FIG. 5 is a sectional view, with parts cut away for clarity, taken along the line 5-5 of FIG. 4;
  • FIGS. 6-8 are enlarged sectional views, taken along the line 6-6 of FIG. 4, of a mechanism for precluding reverse rotation of the striker plate and showing the relationship of a pawl to a single tooth ratchet wheel thereof when the striker pin is in its extended position, its retracted position, and en route from its retracted position to its extended position, respectively;
  • FIGS. 9-11 are diagrammatic elevation views, taken along the line 10-10 of FIG. 4, showing the relationship of the latch bolt and striker to the weather seal strip on the vehicle body, during various stages of closing of the sliding door; and.
  • FIG. 12 is a circuit diagram of an electrical circuit that may be employed in controlling the operation of the final closing device. Best Modes of Carrying Out Invention Referring to FIGS. 1 and 2, wherein the invention has been illustrated on a "van" type of vehicle 10 and is employed to accomplish the final closing movement of a closure member that in this instance comprises a sliding door 12, the arrangement of the sliding door 12 relative to the van 10 will first be briefly described.
  • the sliding door 12 is supported on the body of van 10 at three points.
  • the first point of support comprises an upper roller 14 carried by an arm 16 that is fastened to the door 12. Roller 14 engages an upper guide rail 18 that is attached to the upper end of an open portion of the vehicle body that receives the door.
  • the second point of attachment comprises a lower roller 20 carried by an arm 22 that is fastened to door 12. Roller 20 engages a lower guide rail 24 that is attached to the lower end of the open portion of the vehicle body.
  • the third point of attachment comprise a mid-level roller 26 carried by an arm 28 that is fastened to the door 12 and engages a mid-level guide rail 30 attached to an outer body panel of the vehicle.
  • the door 12 is provided with conventional inner (not shown) and outer handles 32 which are connected via a linkage arrangement including arm 34, cross link 36 and arm 38 to a conventional latch mechanism, shown generally at 40.
  • a suitable internal locking arrangement, shown generally at 42 and an external key locking arrangement (not shown) are provided to prevent unauthorized entry into the vehicle
  • Latch mechanis 40 includes a latch bolt 44 which is at this time fully engaged with and latched on to a striker or striker pin 46 having an enlarged head 47 thereon capable of preventing the latch bolt 44 from axially pulling off of the striker pin during high impact axial loads of at least 1360 kilograms that might occur in an automobile accident.
  • the striker pin 46 is carried by and projects outwardly from a rotatable striker plate 48.
  • the striker 46, striker head 47 and striker plate 48 form parts of a final closing device, shown generally at 50.
  • Device 50 is fixedly mounted upon a body member 52 of vehicle 10 with its rotatable striker plate 48 positioned within an aperture 54 in body member 52 so that striker 46 is positioned in the path of movement of the latch member 44 on door 12.
  • the body member 52 forms part of the frame of the opening for the door 12 and has fastened to it a panel member 56 which carries an elastomeric weather seal strip 58 on a flange 60 formed thereon.
  • the weather seal strip 58 is adapted to be compressed by a marginal portion 62 of the door 12 when the door is finally closed.
  • the marginal portion 62 of door 12 has been illustrated at 62a in FIGS. 4 and 11.to show the door in its finally closed position with the seal strip 58 compressed.
  • the compressed condition of seal strip 58 has been illustrated by broken lines at 58a in FIG. 4.
  • the door 12 is in its partially closed position, with the latch member 44 engaged and latched to the striker 46, and with the striker 46 at its extended position.
  • Final closing device 50 includes a housing 64 which is bolted or otherwise fastened to body member 52. Housing 64 rotatably supports a shaft 66 in bearings 68,
  • Shaft 66 has fixed to one of its ends striker plate
  • Shaft 66 has a pinion gear 74 keyed thereto.
  • the pinion gear is driven by a worm gear 76 carried on the shaft 78 of a motor 80.
  • Shaft 78 is supported in housing 64 by bearings 82, 84, and the motor 80 is fastened by brackets 86, 88 to housing 64. It will thus be seen that when motor 80 is actuated to rotate pinion gear 74, shaft 66 and striker plate 48 are correspondingly rotated, carrying striker pin 46 from its solid line, extended, position shown at 46 in FIGS.
  • striker pin moves from its extended position at 46 to its retracted position at 46a upon counter clockwise rotation (as viewed in FIG. 3) of the striker support plate 48, the striker pin makes a slight vertical motion relative to the vehicle frame. This vertical motion has no detrimental effect on the operation of door 12 because there is sufficient vertical play between the door and the frame and sufficient vertical clearance within the latch member 44 to accomodate this motion.
  • the extended and retracted positions of striker 46 are sensed by corresponding limit switches
  • Limit switch 1LS includes a normally closed contact therein which is opened and held open by actuating arm 72 when the arm actuates limit switch 1LS, signifying that striker 46 has reached and is at its extended position.
  • actuating arm 72 is moved away from limit switch 1LS and into actuating contact with limit switch 2LS.
  • Limit switch 2LS includes a normally closed contact therein which is opened and held open by actuating arm 72 when the striker 46 reaches and is at its fully retracted position, at which position the door 12 is in its finally closed position compressing seal strip 58.
  • a unidirectional lock shown generally at 90, is coupled to the shaft 66 of the striker plate.
  • the lock 90 includes a bracket 91 which is bolted by bolts 92 to the housing 64 and has an opening 93 therein through which one end of shaft 66 passes. Shaft 66 is machined at the portion thereof within the opening 93 so that a ratchet tooth 94 having a radially extending face 95 thereon is formed.
  • the radially inner and outer ends of the face 95 are connected by a smooth spiral cam surface 96.
  • a pawl 97 which is radially movable in an opening 98 formed in bracket 91, is biased against cam surface 96 by a spring 99.
  • a threaded lock bolt 100 which threads into corresponding threads formed in the upper end of opening 98, preloads spring 99.
  • the lower end of pawl 97 rides on the spiral surface 96 of shaft 66, allowing the shaft to rotate counterclockwise as viewed in those figures.
  • sliding door 12 may be manually moved along guide rails 18, 24 and 30, between a nearly closed position and a fully open position.
  • the front end surface of door 12 engages with and actuates a limit switch 3LS that is carried on the front end surface of the body opening for door 12.
  • Limit switch 3LS is provided with a set of normally closed contacts which open when the limit switch is actuated as the door 12 approaches its nearly closed position. The purpose of limit switch 3LS is to verify that the latch bolt 44 is in its fully unlatched position, as shown in FIG. 9.
  • latch bolt 44 When latch bolt 44 is fully unlatched, the striker pin can be moved from its retracted position at 46a, shown in FIG. 11, to its extended position at 46, shown in FIG. 9, without obstruction from latch bolt 44. It is known from observing the operation of door 12 that the latch bolt 44 must be fully unlatched for the front end surface of the door to disengage from the front end surface of the body opening for the door. Thus, a closed contact in limit switch 3LS is used to inform the electrical control system that the latch bolt 44 is fully unlatched and that the striker can be moved from the retracted position to the extended position without obstruction.
  • Latch bolt 44 which moves between its unlatched or open position, shown in FIG. 9, and its latched or closed position, shown in FIG. 10, actuates the contacts of a limit switch 4LS when it arrives at its latched position.
  • Limit switch 4LS is provided with a set of normally open contacts which close when the latch bolt moves to its latched position, shown in FIG. 10, engaging and latching on to striker 46. These contacts open when latch bolt 44 is moved to its unlatched position, shown in FIG. 9.
  • Latch bolt 44 is moved to its unlatched position when the door handle 32 is moved from its closed to its open position. This is accomplished by the linkage assembly, shown in FIG. 1, " comprising arm 34, cross link 36 and arm 38, which connects to the latch mechanism 40 in a conventional manner.
  • the door handle 32 can, of course, be replaced by a key lock or other actuating mechanism (not shown) when the final closing device 50 is used in conjunction with another type of closure member (e.g. a trunk lid or a hingedly mounted door) , rather than a sliding door.
  • a key lock or other actuating mechanism not shown
  • a plurality of spring- loaded movable contacts are disposed on the front end surface of sliding door 12 and a plurality of corresponding fixed contacts, shown generally at 102, are disposed on the front end surface of the body opening for door 12.
  • Contacts 101 and 102 interconnect the limit switch 4LS mounted on door 12 with the remainder of the electrical circuits which control final closing device 50. These contacts are closed when door 12 is being manually closed and nears its nearly closed position, at which the latch bolt 44 latches onto striker 46 and the final closing device 50 actuates to finally close the door.
  • Contacts 101 and 102 remain closed during the time that door 12 is fully closed, and during the initial opening movement of door 12.
  • a line numbering system has been employed to facilitate the description of the electrical system.
  • the line numbers have been listed on the left side of FIG. 11 and they run consecutively from line number 111 through line number 116.
  • the line numbers on which the contacts of relays appear have been listed above and to the right of the relays they refer to and underlining is employed to indicate normally closed contacts.
  • relay 1CR (line 113) is provided with a set of normally open contacts positioned in line 115 and with a set of normally closed contacts positioned in line 116 (as indicated by these numbers being placed above and to the right of control relay 1CR) .
  • the electrical control system for final closing device 50 includes a battery, shown generally at 120, one terminal of which is connected to ground at 122 and the other terminal of which is connected through a fuse 124 (line 112) to a conductor 126 which feeds power to the various components of the electrical control system.
  • the components of the electrical control system have been illustrated in FIG. 12 in the conditions they assume when the sliding door 12 is in its fully closed condition.
  • the normally closed contacts of limit switch 1LS in line 113 are closed (signifying that striker 46 is in a position other tl. ⁇ an its extended position) ; the normally closed contacts of limit switch 2LS in line 114 are open (signifying that striker 46 is fully retracted) ; the normally closed contacts of limit switch 3LS in line 113 are open; and, the normally open contacts of limit switch 4LS in line 114 are closed (signifying that the latch bolt 44 is in its latched position in engagement with striker 46) .
  • control relay 1CR line 113
  • contacts 1CR in line 116 open, they remove ground potential from the input side of motor 80, which potential had previously been applied thereto from ground connection 122 via a conductor 128 and the normally closed contacts 1CR in line 116.
  • the aforementioned closing of contacts 1CR in line 115 energizes motor 80 to rotate striker plate 48 in a counter-clockwise direction (as viewed in FIG. 3) . This moves the striker from its retracted position at 46a to its extended position at 46.
  • limit switch 2LS deactuates, causing its contacts in line 114 to close, preconditioning control relay 1CR for subsequent energization via that line.
  • limit switch 3LS When the door 12 is subsequently moved toward and into its nearly closed position, shown in FIG. 10, in connection with closing the door, limit switch 3LS initially actuates, opening its contacts in line 113 without effect, and then when the latch -bolt 44 moves to its latched position in engagement with striker 46, limit switch 4LS actuates and its contacts in line 114 close, energizing control relay 1CR (line 113) via the closed contacts of limit switches 2LS and 4LS in line 114.
  • contacts 1CR in line 116 open and contacts 1CR in line 115 close, energizing motor 80 for rotation in the same direction as in its previous rotation and causing striker 46 to be rotated from its extended position 46, shown in solid lines in FIGS. 3 and 4, to its retracted position 46a, shown in broken lines in FIGS. 3 and 4.
  • striker 46 is rotated from its extended position 46, shown in solid lines in FIGS. 3 and 4, to its retracted position 46a, shown in broken lines in FIGS. 3 and 4.
  • door 12 is moved from its nearly closed position to its finally closed position, at which the marginal portion 62 compresses the seal 58, as shown at 62a and 58a in FIGS. 4 and 11.
  • the initial movement of striker 46 toward its retracted position results in the deactuation of limit switch 1LS and the closing of its contacts in line 113, without further effect.
  • limit switch 2LS (FIG. 5) is actuated and its contacts in line 114 open, de- energizing control relay 1CR in line 113. Contacts 1CR in line 115 thus open, de-energizing motor 80, and contacts 1CR in line 116 close, grounding the input to motor 80 and dynamically braking it.
  • the components of the electrical control system have been returned to the conditions they were in at the start of this discussion of the electrical circuits of FIG. 12. The electrical control system is thus awaiting subsequent opening of the door handle 32 and opening movement of the door to initiate another operating cycle of the system.
  • the present invention provides an improved final closing device for vehicle closure members, which device can reliably survive typical crash worthiness testing and in which device an eccentrically mounted, motor driven striker, carried on the vehicle body member, is employed to finally close the closure member with high force against the resistance of the weather seal strip carried by the vehicle body.
  • the resulting final closing device is safe to use, economical, sturdy in construction, reliable in operation, and can be retrofitted onto vehicles that were not originally designed to receive such a device.

Landscapes

  • Lock And Its Accessories (AREA)
  • Glass Compositions (AREA)
  • Seal Device For Vehicle (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Abstract

Dispositif de fermeture finale (50) pour un organe de fermeture (12), monté de manière à pouvoir se déplacer entre des positions d'ouverture et de fermeture sur la carrosserie d'un véhicule (52), et comprenant un verrou (40, 44) mobile entre des positions de verrouillage et de libération. Ce dispositif se caractérise par une plaque de support (48) de gâche de serrure montée sur la carrosserie de manière à effectuer un mouvement rotatif autour d'un axe perpendiculaire à la plaque, par une gâche de serrure (46) portée par ladite plaque de support et en saillie sur cette dernière dans une position présentant un décalage excentrique par rapport à l'axe, et par un organe (66, 74, 76, 78, 80) monté sur la carrosserie et relié à la plaque de support de gâche de serrure de manière à la faire tourner, la gâche de serrure étant mobile entre des positions d'extension et de retrait lors de la rotation de ladite plaque de support, de sorte que lorsque la gâche est en prise avec le verrou et que l'on fait tourner la plaque de support de gâche, l'organe de fermeture se déplace entre une position d'ouverture partielle, écartée de la carrosserie, et une position de fermeture complète, en contact hermétique avec la carrosserie.
EP19880909028 1987-09-25 1988-08-29 Final closing device for closure member Withdrawn EP0333839A4 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/100,940 US4775178A (en) 1987-09-25 1987-09-25 Final closing device for closure member on a vehicle
US100940 1987-09-25
US119824 1987-11-12
US07/119,824 US4842313A (en) 1987-11-12 1987-11-12 Automatic vehicle striker powered by a unidirectional motor

Publications (2)

Publication Number Publication Date
EP0333839A1 EP0333839A1 (fr) 1989-09-27
EP0333839A4 true EP0333839A4 (en) 1991-03-20

Family

ID=26797727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880909028 Withdrawn EP0333839A4 (en) 1987-09-25 1988-08-29 Final closing device for closure member

Country Status (8)

Country Link
EP (1) EP0333839A4 (fr)
JP (1) JPH02504052A (fr)
KR (1) KR920009936B1 (fr)
AU (1) AU600395B2 (fr)
BR (1) BR8807220A (fr)
CA (1) CA1323056C (fr)
MX (1) MX165507B (fr)
WO (1) WO1989002964A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022811A1 (de) * 1990-07-18 1992-01-23 Bayerische Motoren Werke Ag Schloss mit hilfsmotor, insbesondere tuerschloss fuer ein kraftfahrzeug
DE4420775C1 (de) * 1994-06-15 1995-08-03 Ymos Ag Ind Produkte Geschirrspülmaschine
US5605363A (en) * 1995-02-07 1997-02-25 Chrysler Corporation Sliding door latch control assembly
FR2772063B1 (fr) 1997-12-09 2000-02-25 Rene Ruchat Dispositif de fermeture du bord arriere d'une porte coulissante de vehicule
DE19957061A1 (de) * 1999-11-26 2001-05-31 Kiekert Ag Kraftfahrzeugtürverschluss
ES2272132B1 (es) * 2004-11-05 2008-03-01 Tubsa Automocion, S.L. Dispositivo de cerradura.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903288A (en) * 1956-09-27 1959-09-08 Gen Motors Corp Latch striker mechanism
JPS61183588A (ja) * 1985-02-07 1986-08-16 本田技研工業株式会社 自動車用ドアロツク装置に於けるストライカ構造

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896990A (en) * 1956-01-06 1959-07-28 Gen Motors Corp Vehicle closure latch
US2833536A (en) * 1956-11-13 1958-05-06 Gen Motors Corp Power operated rear compartment actuator and lock assembly
US3081078A (en) * 1959-05-28 1963-03-12 Gen Motors Corp Deck lid latch and actuator
US3622188A (en) * 1970-03-05 1971-11-23 Gen Motors Corp Door-latching arrangement
FR2451444A1 (fr) * 1979-03-16 1980-10-10 Renault Dispositif de manoeuvre et de verrouillage automatique, notamment du hayon d'un vehicule automobile
JPS5876669A (ja) * 1981-10-29 1983-05-09 株式会社大井製作所 自動車等における自動扉開閉装置
US4617757A (en) * 1984-11-02 1986-10-21 Ohi Seisakusho Co., Ltd. Sliding door opening-closing mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903288A (en) * 1956-09-27 1959-09-08 Gen Motors Corp Latch striker mechanism
JPS61183588A (ja) * 1985-02-07 1986-08-16 本田技研工業株式会社 自動車用ドアロツク装置に於けるストライカ構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8902964A1 *

Also Published As

Publication number Publication date
KR890701861A (ko) 1989-12-22
EP0333839A1 (fr) 1989-09-27
AU600395B2 (en) 1990-08-09
KR920009936B1 (ko) 1992-11-06
BR8807220A (pt) 1989-10-17
AU2543588A (en) 1989-04-18
WO1989002964A1 (fr) 1989-04-06
CA1323056C (fr) 1993-10-12
JPH02504052A (ja) 1990-11-22
MX165507B (es) 1992-11-17

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