EP0460717A3 - Locking system for an office chair - Google Patents

Locking system for an office chair Download PDF

Info

Publication number
EP0460717A3
EP0460717A3 EP19910114245 EP91114245A EP0460717A3 EP 0460717 A3 EP0460717 A3 EP 0460717A3 EP 19910114245 EP19910114245 EP 19910114245 EP 91114245 A EP91114245 A EP 91114245A EP 0460717 A3 EP0460717 A3 EP 0460717A3
Authority
EP
European Patent Office
Prior art keywords
seat
office chair
slot
arm
turned
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
EP19910114245
Other languages
German (de)
Other versions
EP0460717A2 (en
EP0460717B1 (en
Inventor
Burkhard Vogtherr
Manfred Elzenbeck
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.)
Davis Furniture Industries Inc
Original Assignee
Davis Furniture 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
Application filed by Davis Furniture Industries Inc filed Critical Davis Furniture Industries Inc
Publication of EP0460717A2 publication Critical patent/EP0460717A2/en
Publication of EP0460717A3 publication Critical patent/EP0460717A3/en
Application granted granted Critical
Publication of EP0460717B1 publication Critical patent/EP0460717B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/0325—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of clamps or friction locking members
    • 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
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Finger-Pressure Massage (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

The office chair locking mechanism comprises a transverse arm (32) fixed to a support frame below the seat. Slotted housings (72,74) are fixed to the underside of the seat and close to the outer ends of the arm, with the slots in them open to the inside. A sliding and locking member (66), turning on each arm end, fits in the oblong slot in the respective housing and allows sliding of the seat when turned into a first position. It locks in the slot, when turned into a second position, in which its effective dia. between the slot walls is greater than in the first position. It can typically be of hexagonal cross-section.
EP91114245A 1987-09-30 1988-09-13 Locking system for an office chair Expired - Lifetime EP0460717B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/102,724 US4840426A (en) 1987-09-30 1987-09-30 Office chair
US102724 1987-09-30
EP88114926A EP0309804B1 (en) 1987-09-30 1988-09-13 Office chair

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP88114926.4 Division 1988-09-13

Publications (3)

Publication Number Publication Date
EP0460717A2 EP0460717A2 (en) 1991-12-11
EP0460717A3 true EP0460717A3 (en) 1992-05-20
EP0460717B1 EP0460717B1 (en) 1994-12-14

Family

ID=22291364

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91114245A Expired - Lifetime EP0460717B1 (en) 1987-09-30 1988-09-13 Locking system for an office chair
EP88114926A Expired - Lifetime EP0309804B1 (en) 1987-09-30 1988-09-13 Office chair

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88114926A Expired - Lifetime EP0309804B1 (en) 1987-09-30 1988-09-13 Office chair

Country Status (10)

Country Link
US (1) US4840426A (en)
EP (2) EP0460717B1 (en)
AT (2) ATE83624T1 (en)
AU (1) AU598180B2 (en)
DE (2) DE3876922D1 (en)
DK (1) DK499988A (en)
ES (2) ES2067103T3 (en)
FI (1) FI884467A (en)
GR (1) GR3007435T3 (en)
NO (1) NO884328L (en)

Families Citing this family (73)

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Publication number Priority date Publication date Assignee Title
WO1989010080A1 (en) * 1988-04-25 1989-11-02 Perry Charles O Reclining chair
DE3930983C2 (en) * 1989-09-16 1993-09-30 Rolf Voelkle Seating with an adjustable seat
DE4041157A1 (en) * 1989-12-29 1991-07-04 Wilkhahn Wilkening & Hahne Synchronised adjustment device for office chairs - has backrest rotatable and vertically spaced from seat
WO1991015139A1 (en) * 1990-04-10 1991-10-17 Perry Charles O High density stacking flex chair
EP0485868A1 (en) * 1990-11-14 1992-05-20 Giroflex-Entwicklungs AG Chair, in particular office chair
US5318346A (en) * 1991-05-30 1994-06-07 Steelcase Inc. Chair with zero front rise control
US5203853A (en) * 1991-09-18 1993-04-20 Herman Miller, Inc. Locking chair tilt mechanism with torsion bar
US5320410A (en) * 1992-01-14 1994-06-14 Steelcase Inc. Chair control
US5308142A (en) * 1992-01-23 1994-05-03 Steelcase, Inc. Chair with arm mounted motion control
DE4209050C2 (en) * 1992-03-20 1995-06-14 Kloeber Gmbh & Co Task chair with synchronous seat mechanism and dynamic swivel
DE4209049C2 (en) * 1992-03-20 1995-05-11 Kloeber Gmbh & Co Working armchair with flat synchronous mechanism
DE4303324A1 (en) * 1993-02-05 1994-08-11 Bock Martin Kunststoff Seating furniture, in particular office chair
US5630643A (en) * 1993-06-01 1997-05-20 Steelcase Inc Upholstered chair with two-piece shell
US5577807A (en) 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
USD383019S (en) * 1995-01-17 1997-09-02 Steelcase Inc. Chair actuator
US5725276A (en) * 1995-06-07 1998-03-10 Ginat; Jonathan Tilt back chair and control
US5979984A (en) * 1997-10-24 1999-11-09 Steelcase Development Inc. Synchrotilt chair with forwardly movable seat
ITTO980034A1 (en) * 1998-01-16 1999-07-16 Miotto Int Comp MECHANICAL DEVICE FOR THE CONTROL OF THE SYNCHRONOUS MOVEMENT OF THE SEAT AND BACKREST OF A SEAT.
US6250715B1 (en) 1998-01-21 2001-06-26 Herman Miller, Inc. Chair
US6007150A (en) 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
US6102477A (en) * 1998-03-11 2000-08-15 Hon Technology Inc. Chair with tilt limiter
ITVI980182A1 (en) * 1998-09-25 2000-03-25 Enrico Cioncada VARIABLE TRIM CHAIR.
US6042518A (en) * 1998-09-29 2000-03-28 Nustep, Inc. Recumbent total body exerciser
US6059357A (en) * 1998-11-18 2000-05-09 Bernhardt, L.L.C. Chair with adjustable table
US6224155B1 (en) 1999-01-12 2001-05-01 Steelcase Development Inc. Vertical height adjustment mechanism for chairs
US6224159B1 (en) 1999-05-12 2001-05-01 Charles Owen Perry Flexible chair which can be disassembled to a flat configuration
AU2001245735A1 (en) 2000-03-17 2001-10-03 Herman Miller, Inc. Tilt assembly for a chair
DE10030022C2 (en) * 2000-06-17 2002-08-14 Hans Rueckstaedter Ergonomic office chair with outrigger foot
DE10048783A1 (en) * 2000-09-29 2002-05-29 Stoll Sedus Ag Chair with reclining seat
DE10194640B4 (en) * 2000-10-16 2008-03-27 Kokuyo Co., Ltd. Chair that has a mechanism for supporting the seat part
JP4137536B2 (en) 2002-07-03 2008-08-20 コクヨ株式会社 Chair
US7226130B2 (en) * 2002-09-12 2007-06-05 Steelcase Development Corporation Seating with comfort surface
ITMI20022194A1 (en) * 2002-10-16 2004-04-17 Icf Spa CHAIR WITH SEAT AND FURNITURE BACK.
DE10306851A1 (en) * 2003-02-18 2004-08-26 Dózsa-Farkas, Andras Office chair has back rest which reclines about axis at ends of L-shaped levers mounted on its base, seat sliding forward in synchronization with back rest and axis maintaining constant position above seat
US7048335B2 (en) * 2003-06-05 2006-05-23 Steelcase Development Corporation Seating unit with crossbar seat support
US7273253B2 (en) * 2004-06-09 2007-09-25 Kimball International, Inc. Chair ride mechanism with tension assembly
HK1064859A2 (en) * 2004-06-21 2005-01-14 Yu Yeung Tin Synchronous coordinate system of back of chair.
EP1855567B1 (en) * 2005-03-01 2015-09-23 Haworth, Inc. Tilt control mechanism for a chair
GB0517384D0 (en) * 2005-08-26 2005-10-05 Birkbeck Hilary R Variable configuration seating
EP1825780A1 (en) * 2006-02-24 2007-08-29 Ideassociates (IOM) Limited A hinge device for joining two objects in an articulated, spring-loaded manner
MX2008012255A (en) * 2006-03-24 2008-10-07 Miller Herman Inc Piece of furniture.
EP1878360A1 (en) * 2006-07-11 2008-01-16 Pro-Cord S.P.A. Chair with seat and backrest with synchronized movement
US7896439B2 (en) * 2006-08-30 2011-03-01 Itoki Corporation Chair
ATE462325T1 (en) * 2006-10-23 2010-04-15 Ideassociates Iom Ltd SYNCHRONIZING DEVICE FOR OFFICE CHAIR
DE102007001194A1 (en) * 2007-01-05 2008-07-10 Omp S.R.L Motion coupled Servoeinrichutng for a seat part, in particular a chair
CN102151027B (en) 2007-01-29 2016-03-16 赫尔曼米勒有限公司 Seat structure and using method thereof
NO326574B1 (en) * 2007-03-13 2009-01-12 Sapdesign As Device by chair with adjustable angle between chair seat and back
JP5490004B2 (en) * 2007-09-20 2014-05-14 ハーマン、ミラー、インコーポレイテッド Body support structure
US7530637B1 (en) * 2008-03-18 2009-05-12 Yao-Chuan Wu Chair assembly
CN201602410U (en) * 2010-02-04 2010-10-13 周金坤 Dual-purpose chair for working and entertainment
WO2011156536A2 (en) * 2010-06-10 2011-12-15 Office Master Chair with seat depth adjustment and back support
JP5724063B2 (en) * 2010-12-27 2015-05-27 コクヨ株式会社 Chair
US20130001994A1 (en) * 2011-06-30 2013-01-03 Yao-Chuan Wu Chair with a Resilient Back
US9072383B2 (en) 2012-08-16 2015-07-07 L&P Property Management Company Modular chair mechanism with self-weighing
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
USD777494S1 (en) 2015-05-22 2017-01-31 Davis Furniture Industries, Inc. Chair frame
US9713381B2 (en) 2015-06-11 2017-07-25 Davis Furniture Industries, Inc. Chair
DE102016104638A1 (en) * 2016-03-14 2017-09-14 Burkhard Schmitz chair
US10231546B2 (en) * 2017-03-02 2019-03-19 Knoll, Inc. Chair back tilt mechanism
USD853163S1 (en) * 2017-05-15 2019-07-09 Bock 1 Gmbh & Co. Kg Office chair
US10426269B1 (en) 2018-04-30 2019-10-01 Buzz Seating, Inc. Chair with appendage accommodations
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
WO2020247435A1 (en) * 2019-06-05 2020-12-10 Davis Furniture Industries, Inc. Improved tilting chair
WO2020255195A1 (en) * 2019-06-17 2020-12-24 株式会社クオリ Tilt chair
JP7469860B2 (en) * 2019-08-30 2024-04-17 株式会社イトーキ Chair
JP7382178B2 (en) * 2019-08-30 2023-11-16 株式会社イトーキ Chair
US11154136B2 (en) 2020-03-12 2021-10-26 Davis Furniture Industries, Inc. Double shell seat
USD953051S1 (en) * 2020-07-16 2022-05-31 Anji Rongtai Furniture Factory Chair
USD943299S1 (en) * 2020-08-14 2022-02-15 Yahee Trading Limited Chair
USD979965S1 (en) * 2020-09-14 2023-03-07 Hni Technologies Inc. Portion of a chair
US11690455B2 (en) * 2020-09-18 2023-07-04 Dinkar Chellaram Synchronous-tilt reclining chair
US11812870B2 (en) 2021-02-10 2023-11-14 Steelcase Inc. Body support structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB407431A (en) * 1932-10-11 1934-03-22 Charles Ernest Welstead Improvements in and relating to stays and the like for windows, fanlights and the like
DE3031139A1 (en) * 1980-08-18 1982-04-15 Alfred Teves Gmbh, 6000 Frankfurt Motor vehicle seat movable backrest - has friction blocking mechanism with eccentric element between blocking elements
DE3315237A1 (en) * 1983-04-27 1984-10-31 Angela 4592 Lindern Uredat-Neuhoff Seating furniture, in particular an office chair
US4653806A (en) * 1984-01-14 1987-03-31 Mauser-Waldeck Ag Pivotally and slidably connected cantilevered swivel seat

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DE3313677C2 (en) * 1983-04-15 1986-08-14 Burkhard 7842 Kandern Vogtherr Seating furniture, especially office chairs with synchronously adjustable backrests and seats
JPS59207112A (en) * 1983-05-10 1984-11-24 メ−コ−工業株式会社 Chair
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB407431A (en) * 1932-10-11 1934-03-22 Charles Ernest Welstead Improvements in and relating to stays and the like for windows, fanlights and the like
DE3031139A1 (en) * 1980-08-18 1982-04-15 Alfred Teves Gmbh, 6000 Frankfurt Motor vehicle seat movable backrest - has friction blocking mechanism with eccentric element between blocking elements
DE3315237A1 (en) * 1983-04-27 1984-10-31 Angela 4592 Lindern Uredat-Neuhoff Seating furniture, in particular an office chair
US4653806A (en) * 1984-01-14 1987-03-31 Mauser-Waldeck Ag Pivotally and slidably connected cantilevered swivel seat

Also Published As

Publication number Publication date
FI884467A (en) 1989-03-31
GR3007435T3 (en) 1993-07-30
DE3876922D1 (en) 1993-02-04
ATE83624T1 (en) 1993-01-15
NO884328L (en) 1989-03-31
DE3852505D1 (en) 1995-01-26
US4840426A (en) 1989-06-20
EP0309804A3 (en) 1989-09-20
ES2067103T3 (en) 1995-03-16
EP0460717A2 (en) 1991-12-11
NO884328D0 (en) 1988-09-29
AU2295588A (en) 1989-04-06
FI884467A0 (en) 1988-09-29
ATE115375T1 (en) 1994-12-15
DK499988D0 (en) 1988-09-08
ES2037782T3 (en) 1993-07-01
DK499988A (en) 1989-03-31
EP0309804A2 (en) 1989-04-05
EP0309804B1 (en) 1992-12-23
AU598180B2 (en) 1990-06-14
EP0460717B1 (en) 1994-12-14

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