GB2389522B - Spring mechanism for chair with adjustable back - Google Patents

Spring mechanism for chair with adjustable back

Info

Publication number
GB2389522B
GB2389522B GB0318258A GB0318258A GB2389522B GB 2389522 B GB2389522 B GB 2389522B GB 0318258 A GB0318258 A GB 0318258A GB 0318258 A GB0318258 A GB 0318258A GB 2389522 B GB2389522 B GB 2389522B
Authority
GB
United Kingdom
Prior art keywords
members
chair
spring
cams
links
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB0318258A
Other versions
GB0318258D0 (en
GB2389522A (en
Inventor
Simon Vincent Harby Roberts
Mark Grant Jones
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.)
UP MEX Ltd
Unit Press Ltd
Original Assignee
UP MEX Ltd
Unit Press 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 UP MEX Ltd, Unit Press Ltd filed Critical UP MEX Ltd
Publication of GB0318258D0 publication Critical patent/GB0318258D0/en
Publication of GB2389522A publication Critical patent/GB2389522A/en
Application granted granted Critical
Publication of GB2389522B publication Critical patent/GB2389522B/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
    • 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
    • A47C1/03261—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
    • A47C1/03255—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

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A chair having a tiltable back part (3) and a separately tiltable seat part (1) mounted on a base part (2) has a mexhanism including a main compression spring (10) which provides adjustable resistancce to the tilting movement. The spring (10) is generally level and has rear ends (10B) which coacts with positionally adjustable members (13 or 21, 22) which defines a shaped path of movement for the spring ends (10b). In one embodiment the members (13) have shaped surfaces over which rollers (8a) run, and cams (15) are used to pivotally adjust the position of the members (13). In another embodiment th members (21) are links (21) pivotally supported on positionally adjustable receiving structures (22), and cams (23) are used to adjust the positions of the structures and hence change the pivot points of the links (21).
GB0318258A 2001-01-06 2002-01-07 Spring mechanism for chair with adjustable back Expired - Lifetime GB2389522B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0100388.8A GB0100388D0 (en) 2001-01-06 2001-01-06 Chairs
PCT/GB2002/000041 WO2002058514A1 (en) 2001-01-06 2002-01-07 Chairs

Publications (3)

Publication Number Publication Date
GB0318258D0 GB0318258D0 (en) 2003-09-10
GB2389522A GB2389522A (en) 2003-12-17
GB2389522B true GB2389522B (en) 2004-12-08

Family

ID=9906386

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0100388.8A Ceased GB0100388D0 (en) 2001-01-06 2001-01-06 Chairs
GB0318258A Expired - Lifetime GB2389522B (en) 2001-01-06 2002-01-07 Spring mechanism for chair with adjustable back

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0100388.8A Ceased GB0100388D0 (en) 2001-01-06 2001-01-06 Chairs

Country Status (6)

Country Link
EP (1) EP1353584B1 (en)
AT (1) ATE369769T1 (en)
CA (1) CA2472046C (en)
DE (1) DE60221793T2 (en)
GB (2) GB0100388D0 (en)
WO (1) WO2002058514A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331494B4 (en) * 2003-07-11 2007-06-14 Völkle Bürostühle GmbH chair
ITMI20050116U1 (en) 2005-04-06 2006-10-07 Donati Spa SYNCHRONIZATION MECHANISM FOR CHAIRS OR ARMCHAIRS
ITVE20050027A1 (en) 2005-04-28 2006-10-29 Imarc Spa DEVICE FOR ADJUSTING THE OSCILLATION FORCE IN MECHANISMS FOR OFFICE CHAIRS.
JP5347142B2 (en) * 2008-01-16 2013-11-20 コクヨ株式会社 Chair
GB0806958D0 (en) * 2008-04-17 2008-05-21 Simclar Seating Technologies L Chair back tilt tensioning
WO2009147869A1 (en) * 2008-06-05 2009-12-10 株式会社内田洋行 Chair with tilting backrest
DE102009009287A1 (en) 2009-02-17 2010-09-09 Uhlenbrock, Christel Seating furniture, in particular office swivel chair
WO2010103554A1 (en) * 2009-03-10 2010-09-16 Effe Tre S.R.L. Support device of a chair with tilting backrest
US9277821B2 (en) * 2011-07-01 2016-03-08 L&P Property Management Company Tilt mechanism for a chair and chair
US9072383B2 (en) 2012-08-16 2015-07-07 L&P Property Management Company Modular chair mechanism with self-weighing
EP2886015B1 (en) 2013-12-17 2016-07-13 Donati S.p.A. Chair with adjustable backrest
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
MX2017013130A (en) 2015-04-13 2018-03-07 Steelcase Inc Seating arrangement.
EP3927215A4 (en) 2019-02-21 2023-03-15 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537203A1 (en) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Work chair with inclination mechanism for seat and back
US4962962A (en) * 1987-01-09 1990-10-16 Voko Franz Vogt & Co. Piece of seating furniture
EP0960586A2 (en) * 1998-05-27 1999-12-01 Röder, Peter Chair, particularly office chair

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313301C2 (en) 1993-04-23 1995-12-21 Simon Desanta chair

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537203A1 (en) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Work chair with inclination mechanism for seat and back
US4709962A (en) * 1984-10-24 1987-12-01 Kloeber Gmbh & Co. Work chair with a tilting mechanism for seat squab and backrest
US4962962A (en) * 1987-01-09 1990-10-16 Voko Franz Vogt & Co. Piece of seating furniture
EP0960586A2 (en) * 1998-05-27 1999-12-01 Röder, Peter Chair, particularly office chair

Also Published As

Publication number Publication date
CA2472046A1 (en) 2002-08-01
GB0100388D0 (en) 2001-02-14
EP1353584B1 (en) 2007-08-15
ATE369769T1 (en) 2007-09-15
EP1353584A1 (en) 2003-10-22
CA2472046C (en) 2010-04-06
DE60221793D1 (en) 2007-09-27
DE60221793T2 (en) 2008-06-05
WO2002058514A1 (en) 2002-08-01
GB0318258D0 (en) 2003-09-10
GB2389522A (en) 2003-12-17

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
S73 Revocation on comptroller's initiative (section 73/patents act 1977)

Free format text: PATENT REVOKED; PATENT REVOKED UNDER SECTION 73(2) ON 08.08.2011