EP0139269A2 - Dispositif pour rétracter le câble d'un lève-vitre motorisé - Google Patents

Dispositif pour rétracter le câble d'un lève-vitre motorisé Download PDF

Info

Publication number
EP0139269A2
EP0139269A2 EP84111988A EP84111988A EP0139269A2 EP 0139269 A2 EP0139269 A2 EP 0139269A2 EP 84111988 A EP84111988 A EP 84111988A EP 84111988 A EP84111988 A EP 84111988A EP 0139269 A2 EP0139269 A2 EP 0139269A2
Authority
EP
European Patent Office
Prior art keywords
wire
retracting device
drum
drive
wire retracting
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.)
Granted
Application number
EP84111988A
Other languages
German (de)
English (en)
Other versions
EP0139269A3 (en
EP0139269B1 (fr
Inventor
Hirotaka Nishijima
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.)
Nissan Motor Co Ltd
Mitsui Kinzoku ACT Corp
Original Assignee
Ohi Seisakusho Co Ltd
Nissan Motor Co Ltd
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 Ohi Seisakusho Co Ltd, Nissan Motor Co Ltd filed Critical Ohi Seisakusho Co Ltd
Publication of EP0139269A2 publication Critical patent/EP0139269A2/fr
Publication of EP0139269A3 publication Critical patent/EP0139269A3/en
Application granted granted Critical
Publication of EP0139269B1 publication Critical patent/EP0139269B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
    • E05F11/48—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes
    • E05F11/481—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows
    • E05F11/483—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows by cables
    • E05F11/485—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows by cables with cable tensioners
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/689—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings specially adapted for vehicle windows
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
    • E05F11/48—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes
    • E05F11/481—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows
    • E05F11/483—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows by cables
    • E05F11/486—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows by cables with one cable connection to the window glass
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/654—Cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/658—Members cooperating with flexible elongated pulling elements
    • E05Y2201/664—Drums
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/21—Combinations of elements of identical elements, e.g. of identical compression springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/55—Windows

Definitions

  • the present invention relates to a wire retracting device of a window regulator which moves the window pane to a desired position by moving a wire or wires, and more particularly to a wire retracting device which is powered by an electric motor.
  • an exemplified motor-powered window regulator comprises generally a window pane carrier movable together with the window pane, two wires extending from the carrier, a wire retracting device to which the wires lead, and a motor-powered drive unit for driving the wire retracting device.
  • the power created by the motor drives the wire retracting device to retract either one of the wires thereby moving the window pane carrier.
  • the movement of the carrier stops and thus the window pane stops at a desired position.
  • the wire retracting devices employed in the above-mentioned window regulator are of a type which is equipped with a so-called "automatic wire slack remover" which automatically removes the slackness of the wires.
  • the remover comprises two wire retracting drums (viz., drive and driven drums) which are coaxially and rotatably disposed about a common supporting shaft and mated with each other through ratchet means formed therebetween.
  • the supporting shaft employed therein due to insufficient supporting function of the supporting shaft employed therein, some of such wire retracting devices tend to induce unstable rotation of the two drums particularly after long use thereof. Of course, such undesirable rotation of the drums brings about unbalanced operation of the wire retracting device.
  • a motor-powered window regulator having a motor-powered drive unit with an output shaft, a wire retracting device which comprises a casing, a supporting shaft disposed in the casing with its axial one end supported by a bearing fixed to the casing, a wire winding annular device concentrically and rotatably disposed on the supporting shaft and winding thereon a wire which extends to a window pane mover, and supporting means for rotatably supporting the axial other end of the supporting shaft to an axial end portion of the output shaft of the drive unit.
  • the window regulator which is designed to move up or down an automotive door window to a desired position by the force of an electric motor.
  • the window regulator comprises an elongate plate 10 which is disposed in an automotive door (not shown) to extend vertically.
  • the elongate plate 10 is formed at its one side with a guide rail 12 which extends therealong.
  • a carrier plate 14 Slidably moved along the rail 12 is a carrier plate 14 which has a grooved portion (not shown) for slidably receiving therein the rail 12.
  • a window pane 16 is mounted on and secured to the carrier plate 14 and thus they are moved together. It is thus to be noted that the window pane 16 as illustrated in the drawing assumes its lowermost position thereby fully opening the door window.
  • Designated by numeral 18 is a wire retracting device of the invention which is mounted on a base plate 20 secured to an inner panel (not shown) of the door.
  • the wire retracting device 18 is positioned at the outboard side with respect to the door inner panel.
  • Extending from the device 18 are two flexible wires 22 and 24 which lead to the carrier plate 14. That is, the leading end 22a of the wire 22 is fixed to the carrier plate 14 after passing over a guide roller 26 arranged at the upper portion of the elongate plate 10, while, the leading end 24a of the other wire 24 is also fixed to the carrier plate 14 after passing through a guide groove 28 arranged at the upper portion of the elongate plate 10 and then passing through a turning groove 30 formed at the lower portion of the elongate plate 10.
  • a motor-powered drive unit (see Fig. 5) which comprises an electric motor 32 and a speed reduction gear 34.
  • the output shaft of the speed reduction gear 34 is detachably connected to the wire retracting device 18 to drive the same.
  • the wire retracting device 18 retracts one of the wires, for example, the wire 22 while drawing out the other wire 24 therefrom. With this, the carrier plate 14 and thus the window pane 16 mounted thereon are moved together upward along the rail 12 until the electric supply to the motor 32 stops. Upon this stop of electric supply, the movement of the window pane 16 stops, and thereafter, the window pane 16 keeps its half-open position irrespective of its weight.
  • the electric motor 32 is energized to run in the reversed direction
  • the wire retracting device 18 retracts the wire 24 while drawing out the wire 22 therefrom. With this, the window pane 16 is moved downward until the electric supply to the motor 32 stops.
  • the wire retracting device 18 comprises a casing 36 which has three lug portions 36a, 36b and 36c each extending radially outwardly from the open side of the casing 36.
  • the casing 36 is bolted at the lug portions 36a, 36b and 36c to the base plate 20 which has an opening 20a, as shown in Fig. 3.
  • the casing 36 is formed at the bottom portion thereof with an opening 38 into which a reduced end portion 40a of a bearing 40 is securedly fixed.
  • the bearing 40 has a recess consisting of an axially extending cylindrical section 40b and a rectangular section 40c. The diameter of the cylindrical section 40b is greater than the thickness of the rectangular section 40c.
  • a drum shaft 42 having upper and lower pin portions 42a and 42b is beared by the bearing 40 in such a manner that the lower pin portion 42b is rotatably received in the cylindrical section 40b of the bearing 40.
  • a spiral spring 44 having inner and outer ends 44a and 44b is disposed about the fixed bearing 40 (see Fig. 3) with the inner end 44a hooked to the rectangular section 40c of the recess of the bearing 40.
  • Designated by numeral 46 is a driven drum which has at its lower portion a circular recess into which the spiral spring 44 is received (see Fig. 3).
  • the cylindrical outer wall of the driven drum 46 is formed with a helical guide groove 46a, and the circular upper portion of the same is formed at the periphery thereof with ratchet teeth 46b and at the center thereof with a rimmed hole 46c.
  • the rimmed hole 46c extends to the above-mentioned circular recess of the driven drum 46.
  • the outer end 44b of the spiral spring is hooked to a suitable portion of. the circular recess of the driven drum 46 so that the drum 46 is biased to rotate in a wire retracting direction, that is, in the counterclockwise direction in Fig. 4.
  • the drum shaft . 42 is received in the rimmed hole 46c of the driven drum 46 and projected upwardly considerably from the same.
  • a drive drum 48 is coaxially arranged on the driven drum 46 with its upper surface slidably contacting with the inner surface of the base plate 20.
  • the drive drum 48 has a center bore 50 consisting of a smaller diameter section, an intermediate section and a larger diameter section. Similar to the driven drum 46, the cylindrical outer wall of the drive drum 48 is formed with a helical guide groove 48a, and the circular lower portion of the same is formed at the periphery thereof with ratchet teeth 48b.
  • the drive drum 48 is arranged on the driven drum 46 in such a manner that the smaller diameter section, the intermediate section and the larger diameter section of the center bore 50 receive therein respectively the upper pin portion 42a of the drum shaft 42, the major portion 42c of the same and the bored rim portion 46c of the driven drum 46, as is understood from Fig. 3. It is to be noted that the upper pin portion 42a of the drum shaft 42 is projected outwardly from the center bore 50 of the drive drum 48.
  • the ratchet teeth 48b of the drive drum 48 are operatively mated with the ratchet teeth 46b of the driven drum 46.
  • a wave washer 52 is disposed between the bottom portion of the casing 36 and the driven drum 46, by which the driven drum 46 is biased toward the drive drum 48.
  • the ratchet teeth 48b and 46b are so designed as to couple these two drums 48 and 46 when the drive drum 48 is rotated in the counterclockwise direction (in Fig. 4) or the driven drum 46 is rotated in the clockwise direction (in Fig. 4). Thus, relative rotation between them is permitted only when the drive drum 48 is rotated in the clockwise direction or the driven drum 46 is rotated in the counterclockwise direction.
  • the flexible wires 22 and 24 are helically wound along the guide grooves 46a and 48a of the driven and drive drums 46 and 48, respectively.
  • the end 22b of the wire 22 is hooked to a cut 46d formed in the driven drum 46, while, the end 24b of the other wire 24 is hooked to a cut (not shown) formed in the drive drum 48, so that the wire 22 is retracted by the driven drum 46 when the latter 46 is rotated in the counterclockwise direction in Fig. 4, while, the wire 24 is retracted by the drive drum 48 when the latter 48 is rotated in the clockwise direction.
  • pull-out movement of the wire 22 induces the coupled rotation of the driven and drive drums 46 and 48 in the clockwise direction in Fig.
  • the drive drum 48 is formed with an annular recess 54 about the center bore 50.
  • the recess 54 is formed at its bottom portion with a coupling recess which consists of three equally spaced rectangular depressions 56a, 56b and 56c and three equally spaced arcuate thin grooves (no numerals) through which the depressions are merged with one another.
  • the drive drum 48 is further formed at the peripheral portion with six depressions 58 (only one is numbered) for the purpose of reducing the weight thereof.
  • a generally triangular bush 60 of rubber material is intimately fitted in the coupling recess of the drive drum 48.
  • the bush 60 has an external shape matching with the shape of the coupling recess.
  • the bush 60 has thus equally spaced three lug portions 60a, 60b and 60c each having therein a deformable recess (no numeral), as is seen from Fig. 4.
  • the deformable recesses of the lug portions 60a, 60b and 60c of the bush 60 catch three projections 62a, 62b and 62c formed on the after-mentioned output shaft of the speed reduction gear 34.
  • the motor-powered drive unit comprising the electric motor 32 and the speed reduction gear 34.
  • the three projections 62a, 62b and 62c are provided on a circular plate 62 which is coaxially connected to an output shaft 64 (see Fig. 3) of the speed reduction gear 34.
  • the circular plate 62 is formed at its center with a bore 66 which has a size matching with the upper pin portion 42a of the drum shaft 42.
  • the drive unit has several bored lug portions 68 (only one is numbered) which are bolted to the base plate 20.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Window Of Vehicle (AREA)
EP19840111988 1983-10-07 1984-10-05 Dispositif pour rétracter le câble d'un lève-vitre motorisé Expired EP0139269B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58186841A JPS6080676A (ja) 1983-10-07 1983-10-07 ウインドレギユレ−タのワイヤ巻取装置
JP186841/83 1983-10-07

Publications (3)

Publication Number Publication Date
EP0139269A2 true EP0139269A2 (fr) 1985-05-02
EP0139269A3 EP0139269A3 (en) 1986-04-09
EP0139269B1 EP0139269B1 (fr) 1988-12-21

Family

ID=16195566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840111988 Expired EP0139269B1 (fr) 1983-10-07 1984-10-05 Dispositif pour rétracter le câble d'un lève-vitre motorisé

Country Status (3)

Country Link
EP (1) EP0139269B1 (fr)
JP (1) JPS6080676A (fr)
DE (1) DE3475724D1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770056A (en) * 1985-05-28 1988-09-13 Brose Fahrzeugteile Gmbh & Co. Kg Window lifter-drive unit, especially for a cable-window lifter
EP0609582A1 (fr) * 1993-01-25 1994-08-10 General Motors Corporation Système pour ouvrir/fermer une porte
EP0609583A1 (fr) * 1993-01-25 1994-08-10 General Motors Corporation Système pour ouvrir/fermer une porte
US5588258A (en) * 1995-03-01 1996-12-31 General Motors Corporation Power operator for pivotable vehicle closure element
WO1999047779A2 (fr) * 1998-03-17 1999-09-23 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Dispositif de commande de leve-vitre par cable
FR2832753A1 (fr) * 2001-11-29 2003-05-30 Meritor Light Vehicle Sys Ltd Leve-vitre compact a cable
EP1223284A3 (fr) * 2001-01-12 2004-07-14 Arvinmeritor Light Vehicle Systems-France Assemblage de panneau de porte
ES2241386A1 (es) * 2002-07-22 2005-10-16 Grupo Antolin-Ingenieria , S.A Dispositivo de montaje de un motor elevalunas y la cinematica asociada.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63177583U (fr) * 1987-05-01 1988-11-17

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1102856A (fr) * 1953-06-26 1955-10-26 Benteler Werke Ag Montage pour rouleaux de tous genres, à tourillons séparés
DE3001617A1 (de) * 1979-02-09 1980-08-28 Aisin Seiki Fenster-verstellvorrichtung mit seilzug-antrieb fuer den einbau in fahrzeugen
FR2508091A1 (fr) * 1981-06-17 1982-12-24 Ducellier & Cie Procede de montage d'un leve-vitre electrique adaptable
GB2100791A (en) * 1981-06-22 1983-01-06 Nippon Cable System Inc Wire-driving device for window regulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1102856A (fr) * 1953-06-26 1955-10-26 Benteler Werke Ag Montage pour rouleaux de tous genres, à tourillons séparés
DE3001617A1 (de) * 1979-02-09 1980-08-28 Aisin Seiki Fenster-verstellvorrichtung mit seilzug-antrieb fuer den einbau in fahrzeugen
FR2508091A1 (fr) * 1981-06-17 1982-12-24 Ducellier & Cie Procede de montage d'un leve-vitre electrique adaptable
GB2100791A (en) * 1981-06-22 1983-01-06 Nippon Cable System Inc Wire-driving device for window regulator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770056A (en) * 1985-05-28 1988-09-13 Brose Fahrzeugteile Gmbh & Co. Kg Window lifter-drive unit, especially for a cable-window lifter
EP0609582A1 (fr) * 1993-01-25 1994-08-10 General Motors Corporation Système pour ouvrir/fermer une porte
EP0609583A1 (fr) * 1993-01-25 1994-08-10 General Motors Corporation Système pour ouvrir/fermer une porte
US5588258A (en) * 1995-03-01 1996-12-31 General Motors Corporation Power operator for pivotable vehicle closure element
WO1999047779A2 (fr) * 1998-03-17 1999-09-23 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Dispositif de commande de leve-vitre par cable
WO1999047779A3 (fr) * 1998-03-17 1999-12-23 Brose Fahrzeugteile Dispositif de commande de leve-vitre par cable
EP1223284A3 (fr) * 2001-01-12 2004-07-14 Arvinmeritor Light Vehicle Systems-France Assemblage de panneau de porte
FR2832753A1 (fr) * 2001-11-29 2003-05-30 Meritor Light Vehicle Sys Ltd Leve-vitre compact a cable
EP1316666A1 (fr) * 2001-11-29 2003-06-04 ArvinMeritor Light Vehicle Systems-France Lève-vitre compact à câble
US6874280B2 (en) 2001-11-29 2005-04-05 Meritor Light Vehicle Systems - France Compact cable-type window lifter
ES2241386A1 (es) * 2002-07-22 2005-10-16 Grupo Antolin-Ingenieria , S.A Dispositivo de montaje de un motor elevalunas y la cinematica asociada.

Also Published As

Publication number Publication date
EP0139269A3 (en) 1986-04-09
EP0139269B1 (fr) 1988-12-21
JPH0329955B2 (fr) 1991-04-25
DE3475724D1 (en) 1989-01-26
JPS6080676A (ja) 1985-05-08

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