EP0247311A2 - Chaise - Google Patents

Chaise Download PDF

Info

Publication number
EP0247311A2
EP0247311A2 EP87104184A EP87104184A EP0247311A2 EP 0247311 A2 EP0247311 A2 EP 0247311A2 EP 87104184 A EP87104184 A EP 87104184A EP 87104184 A EP87104184 A EP 87104184A EP 0247311 A2 EP0247311 A2 EP 0247311A2
Authority
EP
European Patent Office
Prior art keywords
support
seat
link
seat support
chair
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
EP87104184A
Other languages
German (de)
English (en)
Other versions
EP0247311A3 (en
EP0247311B1 (fr
Inventor
Max Lanuzzi
Fredi Dubach
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.)
Drabert Soehne GmbH and Co
Original Assignee
Drabert Soehne GmbH and Co
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 Drabert Soehne GmbH and Co filed Critical Drabert Soehne GmbH and Co
Publication of EP0247311A2 publication Critical patent/EP0247311A2/fr
Publication of EP0247311A3 publication Critical patent/EP0247311A3/de
Application granted granted Critical
Publication of EP0247311B1 publication Critical patent/EP0247311B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

Definitions

  • the invention relates to a chair with a seat support on which a seat plate is supported by means of a rear handlebar, and also with a backrest support which is pivotably articulated on the seat support.
  • Such chairs are known in various designs, including from DE-PS 28 22 574.
  • the invention has for its object to provide a chair of the type mentioned in such a way that an adjustment of the adjusting force for the backrest is not necessary and thus the restoring force for the backrest increases with increasing user weight.
  • the seat plate is connected to the seat support via a front link and the seat support is connected via a front and a rear parallelogram link to a fixed inclination support which is fixed to the lower part of the chair, the parallelogram link also being articulated by means of a parallel guide link are connected and a first energy store between the seat support and incline support and a second energy store between the backrest support and seat support are effective.
  • both energy stores are preloaded to a greater or lesser extent depending on the user weight.
  • the result of this is that the movement of the backrest runs more or less smoothly with the synchronized movement of the seat coupled therewith.
  • the chair is shown in the extreme inclination positions of the backrest, specifically drawn in the front end position and dashed lines in the rear end position. Leaning against the backrest causes the seat 11 to move in synchronism with the backrest movement. The size of the restoring forces for this movement is automatically adjusted by the adjusting mechanism described in more detail below in accordance with the body weight of the user.
  • parallelogram links 3 are articulated, the ends of which are connected via a parallel guide link 4.
  • the parallelogram link 3 are also articulated on a seat support 7.
  • the parallelogram link 3 and the parallel guide link 4 articulated together.
  • a second energy accumulator 15 is also designed as a tension spring and is articulated on the one hand at the articulation point 3a and on the other hand at the articulation point 12a.
  • the articulation point 12a is the articulation point of the rear link 12 on the seat 11.
  • the rear link 12 is articulated on the seat support 7 with its other end.
  • the seat 11 is also attached to the seat support 7 via the handlebar 10.
  • the backrest support 14a the front, angled region 14 of which is connected to a link 13 is articulated on the seat support 7 so as to be pivotable about the articulation point 14b.
  • the link 13 is in turn articulated approximately in the middle of the rear link 12.
  • the embodiment according to FIGS. 6 and 7 differs from the embodiment according to FIGS. 2 to 5 only in the different design and arrangement of the energy accumulator 15 ⁇ .
  • the energy accumulator 15 ⁇ is articulated on the one hand at the articulation point 14c and on the other hand at the articulation point 7a of the seat support 7.
  • the mode of operation of the adjusting mechanism can be seen from a comparison of FIG. 2 with FIG. 3.
  • the parallelogram links 3 move to the right against the force of the tension spring 5. This reduces the distance between the parallel guide link 4 and the inclination bracket 1 from the value A (FIG. 2) to the value C.
  • the seat bracket 7 is also moved more or less far forward by the pivoting movement of the parallelogram link 3 according to the weight of the user (dimension D).
  • the mechanism described so far is not only used for seat suspension depending on the weight of the user, but also to accomplish the weight-dependent adjustment and synchronous movement of the tilt mechanism:
  • the energy accumulator 5 is preloaded to a greater or lesser extent in accordance with the user weight.
  • the energy accumulator 15 is also biased more or less strongly by the parallel displacement in accordance with the user weight, with the result that the movement of the backrest with the synchronized movement of the seat coupled therewith runs more or less smoothly.
EP87104184A 1986-05-26 1987-03-21 Chaise Expired - Lifetime EP0247311B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3617624 1986-05-26
DE8614185U DE8614185U1 (de) 1986-05-26 1986-05-26 Stuhl
DE19863617624 DE3617624A1 (de) 1986-05-26 1986-05-26 Stuhl

Publications (3)

Publication Number Publication Date
EP0247311A2 true EP0247311A2 (fr) 1987-12-02
EP0247311A3 EP0247311A3 (en) 1988-04-06
EP0247311B1 EP0247311B1 (fr) 1991-03-13

Family

ID=42108201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87104184A Expired - Lifetime EP0247311B1 (fr) 1986-05-26 1987-03-21 Chaise

Country Status (8)

Country Link
US (1) US4761033A (fr)
EP (1) EP0247311B1 (fr)
JP (1) JPS6365817A (fr)
AU (1) AU581367B2 (fr)
CA (1) CA1278992C (fr)
DE (3) DE3617624A1 (fr)
DK (1) DK166401B1 (fr)
NO (1) NO166518C (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0435297A1 (fr) * 1989-12-27 1991-07-03 Itoki Crebio Corporation Dispositif de commande pour le basculement d'une chaise
EP0434897A1 (fr) * 1989-11-30 1991-07-03 Itoki Crebio Corporation Mécanisme basculant pour siège
EP0591932A1 (fr) * 1992-10-06 1994-04-13 COMFORTO GmbH Chaise, notamment chaise de travail
US6139103A (en) * 1997-03-12 2000-10-31 Leggett & Platt, Inc. Synchronized chair seat and backrest tilt control mechanism
NL1018178C2 (nl) * 2001-05-30 2002-12-03 Gio Holding B V Zitmeubel.
US6709057B2 (en) 2001-05-11 2004-03-23 Armin Sander Chair, in particular office chair
WO2008067947A1 (fr) * 2006-12-04 2008-06-12 Sato Office Gmbh Siège avec une plaque d'assise et un dossier
US8931841B2 (en) 2011-08-25 2015-01-13 Johannes Uhlenbrock Synchronous mechanism for a chair

Families Citing this family (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672237A5 (en) * 1986-10-14 1989-11-15 Giroflex Entwicklungs Ag Relaxing chair
DE3700447A1 (de) * 1987-01-09 1988-07-21 Vogt Bueromoebel Sitzmoebel
DE3805771A1 (de) * 1987-02-25 1988-09-08 Koehl Gmbh Anordnung zur synchronen verstellung der neigungen des sitzes und der rueckenlehne eines drehstuhls oder -sessels
US4966411A (en) * 1987-10-24 1990-10-30 Kokuyo Co., Ltd. Chair provided with a backrest
DE3900220A1 (de) * 1989-01-05 1990-07-12 Wilkhahn Wilkening & Hahne Stuhl
US4943114A (en) * 1989-02-06 1990-07-24 Giancarlo Piretti Chair backrest linkage mechanism
DE4019876A1 (de) * 1990-06-22 1992-01-02 Simon Desanta Stuhl, insbesondere buerostuhl
US5318345A (en) * 1991-06-07 1994-06-07 Hon Industries, Inc. Tilt back chair and control
WO1993003653A1 (fr) * 1991-08-22 1993-03-04 Peter James Riddle Dossier de chaise avec compensation du poids
EP0885575A3 (fr) 1992-06-15 2000-08-30 Herman Miller, Inc. Accoudoir réglable
WO1994027472A1 (fr) * 1993-06-02 1994-12-08 Sava Cvek Chaise articulee de support
DE4327373C2 (de) * 1993-08-14 1997-07-17 Girsberger Holding Ag Stuhl, insbesondere Bürostuhl
WO1998037792A1 (fr) * 1997-02-28 1998-09-03 Kjartan Alvestad Dispositif de reglage destine a des lits et autre mobilier pouvant s'incliner ou du type siege
JP3136280B2 (ja) * 1997-04-28 2001-02-19 株式会社いのうえアソシエーツ 椅 子
DE29718696U1 (de) * 1997-10-21 1998-02-26 Interco Ges Fuer Die Planung U Verfahrbare Sitzanordnung
US6086153A (en) 1997-10-24 2000-07-11 Steelcase Inc. Chair with reclineable back and adjustable energy mechanism
ITTO980034A1 (it) * 1998-01-16 1999-07-16 Miotto Int Comp Dispositivo meccanico per il controllo della movimentazione sincrona d i sedile e schienale di una seduta.
US6250715B1 (en) 1998-01-21 2001-06-26 Herman Miller, Inc. Chair
DE19823632C1 (de) 1998-05-27 1999-09-30 Roeder Peter Stuhl, insbesondere Bürostuhl
US6709058B1 (en) * 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
AR026126A1 (es) * 1999-06-04 2003-01-29 Softview Comp Products Corp Una silla reclinable
US6582019B2 (en) 2000-03-17 2003-06-24 Herman Miller, Inc. Tilt assembly for a chair
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
USD463144S1 (en) 2000-09-28 2002-09-24 Formway Furniture Limited Chair
AUPR054400A0 (en) 2000-09-29 2000-10-26 Formway Furniture Limited A castor
AU772266B2 (en) * 2000-10-16 2004-04-22 Kokuyo Co., Ltd. Chair
US6609755B2 (en) * 2001-06-15 2003-08-26 Hon Technology Inc. Ergonomic chair
US6890030B2 (en) * 2001-07-31 2005-05-10 Haworth, Inc. Chair having a seat with adjustable front edge
NO317791B1 (no) 2002-01-04 2004-12-13 Stokke As Bevegelig ledd
DE10219478B4 (de) * 2002-04-30 2006-07-13 Klöber GmbH Stuhl mit vom Benutzergewicht abhängigen Kraftspeicher
KR100474392B1 (ko) * 2002-12-03 2005-03-10 주식회사 일룸 틸팅 가능 의자
DE602005025169D1 (de) * 2004-05-13 2011-01-13 Humanscale Corp Stuhl mit säulenförmigem Fuss mit Membranplatten
US7380881B2 (en) * 2004-06-15 2008-06-03 Freed William L Ergonomically responsive chair
USD623449S1 (en) 2005-05-13 2010-09-14 Humanscale Corporation Mesh backrest for a chair
AR057387A1 (es) * 2005-06-20 2007-12-05 Humanscale Corp Aparato de asiento con movimiento reclinable
US7806478B1 (en) 2006-01-04 2010-10-05 Sava Cvek Task chair with dual tilting capabilities
CA2646948A1 (fr) 2006-03-24 2007-10-04 Herman Miller Inc. Meuble
US7717515B2 (en) * 2006-04-24 2010-05-18 Humanscale Corporation Chair having an automatically adjusting resistance to tilting
USD661135S1 (en) 2006-06-20 2012-06-05 Humanscale Corporation Pair of armrests for a chair or the like
CN102151026B (zh) 2007-01-29 2016-05-18 赫尔曼米勒有限公司 座位结构及其使用方法
WO2008112918A1 (fr) 2007-03-13 2008-09-18 Hni Technologies Inc. Système de support lombaire dynamique pour dossier de chaise
CN101677688B (zh) * 2007-03-13 2011-09-07 Hni技术公司 用于座椅的六连杆机构和控制器
ITTO20070398A1 (it) * 2007-06-06 2008-12-07 Malenotti S R L "sedia con schienale oscillante"
JP5490004B2 (ja) 2007-09-20 2014-05-14 ハーマン、ミラー、インコーポレイテッド 身体支持構造
TW200950726A (en) * 2008-06-06 2009-12-16 Fon Chin Ind Co Ltd Front-and-back reciprocating, reclining, lifting and lowering apparatus for a chair back
JP4379538B1 (ja) * 2008-10-07 2009-12-09 沖電気工業株式会社 椅子用リンク機構、椅子
US8272692B1 (en) * 2009-10-26 2012-09-25 Epperson Ronald B Office chair having tiltable seat and back
JP5514509B2 (ja) * 2009-10-26 2014-06-04 株式会社イトーキ ロッキング椅子
US8714645B2 (en) 2010-01-28 2014-05-06 Sava Cvek Pivoting mechanism with gross and fine resistance adjustment
US8714646B2 (en) 2010-02-08 2014-05-06 Sava Cvek Mobile task chair and mobile task chair control mechanism with adjustment capabilities and visual setting indicators
CN107023096A (zh) 2010-05-05 2017-08-08 奥斯蒂尔公司 用于对接釉面墙板的可移动且可拆解墙板系统
US20130175841A1 (en) 2012-01-11 2013-07-11 James W. Finck Reclining seat assembly
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US9138061B1 (en) 2012-12-05 2015-09-22 Joel H. Eisenberg Seating
CA2906736C (fr) 2013-03-15 2021-11-02 Hni Technologies Inc. Chaise ayant une flexion arriere activee
WO2014166495A1 (fr) * 2013-04-10 2014-10-16 R82 A/S Siège
DE202014100062U1 (de) 2014-01-08 2015-04-10 Innotec Motion GmbH Sitzmöbel mit federnder Rückenlehne
PL2896325T3 (pl) * 2014-01-20 2018-07-31 L&P Property Management Company Mechanizm TILT do mebli do siedzenia i meble do siedzenia zawierające ten mechanizm
EP2896326A1 (fr) 2014-01-21 2015-07-22 Stoll Giroflex AG Siège, en particulier chaise
WO2015161281A1 (fr) 2014-04-17 2015-10-22 Hni Technologies Inc. Chaise et ensembles, systèmes et procédés de commande de chaise
US10064493B2 (en) 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
USD743180S1 (en) 2014-10-15 2015-11-17 Hni Technologies Inc. Chair
NO339052B1 (no) * 2014-10-27 2016-11-07 Sykkylven Staal As Anordning ved sittemøbel
US10292498B2 (en) * 2015-02-11 2019-05-21 Aaron DeJule Apparatus with weight responsive changeable adjusting characteristics
US11596235B2 (en) * 2015-02-11 2023-03-07 Aaron DeJule Apparatus with weight responsive changeable adjusting characteristics
GB2536290B (en) * 2015-03-13 2017-06-07 Deep Thought Ltd Self-weigh mechanism for office chair
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
MX2017013130A (es) 2015-04-13 2018-03-07 Steelcase Inc Disposicion de asiento.
DE102016104638A1 (de) * 2016-03-14 2017-09-14 Burkhard Schmitz Stuhl
US11071386B2 (en) 2016-06-09 2021-07-27 Sava Cvek Seat pivoting mechanism and chair height locking system
GB2553750B (en) 2016-06-28 2019-06-05 Posturite Ltd Seat tilting mechanism
IT201700112144A1 (it) * 2017-10-06 2019-04-06 Co Fe Mo Ind S R L Sistema di oscillazione per sedie
US10993540B2 (en) 2018-10-10 2021-05-04 R82 A/S Dynamic backrest construction
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
WO2020172243A1 (fr) 2019-02-21 2020-08-27 Steelcase Inc. Ensemble support corporel et procédés d'utilisation et d'assemblage de cet ensemble
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
RU2738634C1 (ru) * 2020-01-10 2020-12-15 Михаил Николаевич Жуков Устройство для изменения угла наклона сиденья кресла

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Publication number Priority date Publication date Assignee Title
DE2026929A1 (de) * 1969-06-03 1970-12-17 Dupart, Jean, Sceaux (Frankreich) Stuhl mit sich automatisch anpassender Rückenlehne
DE2843058A1 (de) * 1978-10-03 1980-04-24 Kloeber Kg Sitzmoebel mit verstelleinrichtung
DE3537203A1 (de) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Arbeitsstuhl mit neigungsmechanik von sitzschale und rueckenlehne

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US2859799A (en) * 1956-05-03 1958-11-11 Edwin R Moore Functional posture controller for chairs
DE7815561U1 (fr) * 1978-05-24 1978-09-14 Martin Stoll Giroflex Gmbh, 7897 Tiengen
CH645795A5 (en) * 1979-07-23 1984-10-31 Drabert Soehne Chair, in particular visual display unit chair
ATE12168T1 (de) * 1981-08-19 1985-04-15 Giroflex Entwicklungs Ag Stuhl.
DE3139448C2 (de) * 1981-10-03 1984-06-07 Kusch & Co Sitzmöbelwerke KG, 5789 Hallenberg Stuhl
AU4316385A (en) * 1984-06-08 1985-12-12 Hauserman Inc. Office chair

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Publication number Priority date Publication date Assignee Title
DE2026929A1 (de) * 1969-06-03 1970-12-17 Dupart, Jean, Sceaux (Frankreich) Stuhl mit sich automatisch anpassender Rückenlehne
DE2843058A1 (de) * 1978-10-03 1980-04-24 Kloeber Kg Sitzmoebel mit verstelleinrichtung
DE3537203A1 (de) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Arbeitsstuhl mit neigungsmechanik von sitzschale und rueckenlehne

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434897A1 (fr) * 1989-11-30 1991-07-03 Itoki Crebio Corporation Mécanisme basculant pour siège
US5080318A (en) * 1989-11-30 1992-01-14 Itoki Kosakusho Co., Ltd. Tilting control assembly for chair
EP0435297A1 (fr) * 1989-12-27 1991-07-03 Itoki Crebio Corporation Dispositif de commande pour le basculement d'une chaise
EP0591932A1 (fr) * 1992-10-06 1994-04-13 COMFORTO GmbH Chaise, notamment chaise de travail
US6139103A (en) * 1997-03-12 2000-10-31 Leggett & Platt, Inc. Synchronized chair seat and backrest tilt control mechanism
US6709057B2 (en) 2001-05-11 2004-03-23 Armin Sander Chair, in particular office chair
NL1018178C2 (nl) * 2001-05-30 2002-12-03 Gio Holding B V Zitmeubel.
WO2002096240A1 (fr) * 2001-05-30 2002-12-05 Gio Holding B.V. Siege pouvant recevoir un corps ou une partie d'un corps
WO2008067947A1 (fr) * 2006-12-04 2008-06-12 Sato Office Gmbh Siège avec une plaque d'assise et un dossier
CN101573060B (zh) * 2006-12-04 2011-09-28 Sato办公用品有限公司 具有座板和椅背的座椅
US8215710B2 (en) 2006-12-04 2012-07-10 Sato Office Gmbh Seat having a seat panel and a backrest
US8931841B2 (en) 2011-08-25 2015-01-13 Johannes Uhlenbrock Synchronous mechanism for a chair

Also Published As

Publication number Publication date
DK166401B1 (da) 1993-05-17
NO166518C (no) 1991-08-07
EP0247311A3 (en) 1988-04-06
AU581367B2 (en) 1989-02-16
CA1278992C (fr) 1991-01-15
DE8614185U1 (de) 1986-07-17
AU7335587A (en) 1987-12-03
DE3768556D1 (de) 1991-04-18
DE3617624A1 (de) 1987-12-03
NO871685D0 (no) 1987-04-23
DK265487A (da) 1987-11-27
US4761033A (en) 1988-08-02
JPS6365817A (ja) 1988-03-24
NO166518B (no) 1991-04-29
NO871685L (no) 1987-11-27
DK265487D0 (da) 1987-05-25
EP0247311B1 (fr) 1991-03-13

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