CA2472046A1 - Chairs - Google Patents

Chairs Download PDF

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Publication number
CA2472046A1
CA2472046A1 CA002472046A CA2472046A CA2472046A1 CA 2472046 A1 CA2472046 A1 CA 2472046A1 CA 002472046 A CA002472046 A CA 002472046A CA 2472046 A CA2472046 A CA 2472046A CA 2472046 A1 CA2472046 A1 CA 2472046A1
Authority
CA
Canada
Prior art keywords
chair according
abutment member
positionally adjustable
chair
shaped
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
CA002472046A
Other languages
French (fr)
Other versions
CA2472046C (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.)
SIMCLAR SEATING TECHNOLOGIES Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2472046A1 publication Critical patent/CA2472046A1/en
Application granted granted Critical
Publication of CA2472046C publication Critical patent/CA2472046C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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. T he 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 o f 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).

Claims (15)

1. A chair having a base part, a seat part mounted on the base part, and a back part connected to the base and seat parts, whereby the back part can tilt and the seat part can move relative to the base part against a spring force, under the action of the weight of a person sitting on the chair, wherein the spring force is provided by a main spring means arranged to act in substantially level disposition and which has a positionally adjustable mounting at one end thereof for adjustment of the spring force characterised in that the positionally adjustable mounting is provided by the said one end which coacts with an abutment member providing a shaped movement path for the said end, said abutment member being positionally adjustable for adjustment of the said path.
2. A chair according to claim 1 characterised in that the abutment member has a ,shaped surface which defines said shaped path.
3. A chair according to claim 2 characterised in that the shaped surface is generally curved.
4. A chair according to claim 2 or 3 characterised in that the abutment member is positionally adjustable by pivoting thereof.
5. A chair according to any one of claims 2 to 4 characterised in that the said one end coacts from above with the shaped surface of the abutment member.
6. A chair according to any one of claims 1 to 5 characterised in that the said one end coacts with the shaped surface of the abutment member through a roller mounted on the said one end.
7. A chair according to claim 1 characterised in that the abutment member comprises a link pivotally mounted on an intermediate member, the pivotal movement of the link defining said shaped path and the intermediate member being movable for said positional adjustment of the abutment member.
8. A chair according to claim 7 characterised in that the link is pivotally mounted on the intermediate member by location of an end thereof in a receiving portion of the intermediate member.
9. A chair according to any one of claims 1 to 8 characterised by the provision of a shaped cam member which is rotatable in engagement with the abutment member to effect said positional adjustment thereof.
10. A chair according to any one of claims 1 to 9 characterised by the provision of a manual control for effecting said positional adjustment of the abutment member.
11. A chair according to any one of claims 1 to 10 characterised by the provision of an automatic control linking the abutment member to the seat part whereby said positional adjustment of the abutment member is effected under the action of the weight of a person sitting on the chair.
12. A chair according to any one of claims 1 to 11 characterised in that the main spring means comprises a compression helical coil spring.
13. A chair according to any one of claims 1 to 12 characterised in that the seat part and the base part have structures connected by forward and rearward pivotal links to define a parallelogram linkage construction.
14. A chair according to claim 13 characterised in that the back part is pivotally mounted on the base part and the rearward links are connected to the base part via the back part.
15. A mechanism for a chair according to any one of claims 1 to 14 comprising a main spring means arranged to act in substantially level disposition and which has a positionally adjustable mounting at one end thereof for adjustment of the spring force characterised in that the positionally adjustable mounting is provided by the said one end which coacts with an abutment providing a shaped movement path for the said end, said abutment member being positionally adjustable for adjustment of the said path.
CA2472046A 2001-01-06 2002-01-07 Chairs Expired - Fee Related CA2472046C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0100388.8 2001-01-06
GBGB0100388.8A GB0100388D0 (en) 2001-01-06 2001-01-06 Chairs
PCT/GB2002/000041 WO2002058514A1 (en) 2001-01-06 2002-01-07 Chairs

Publications (2)

Publication Number Publication Date
CA2472046A1 true CA2472046A1 (en) 2002-08-01
CA2472046C CA2472046C (en) 2010-04-06

Family

ID=9906386

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2472046A Expired - Fee Related CA2472046C (en) 2001-01-06 2002-01-07 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
PL2886015T3 (en) * 2013-12-17 2017-01-31 Donati S.P.A. Chair with adjustable backrest
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
CA2981528A1 (en) 2015-04-13 2016-10-20 Steelcase Inc. Seating arrangement
AU2020224628A1 (en) 2019-02-21 2021-08-26 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

Family Cites Families (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
DE3700447A1 (en) 1987-01-09 1988-07-21 Vogt Bueromoebel SEAT FURNITURE
DE4313301C2 (en) 1993-04-23 1995-12-21 Simon Desanta chair
DE19823632C1 (en) * 1998-05-27 1999-09-30 Roeder Peter Office chair

Also Published As

Publication number Publication date
WO2002058514A1 (en) 2002-08-01
CA2472046C (en) 2010-04-06
GB2389522B (en) 2004-12-08
GB0318258D0 (en) 2003-09-10
GB2389522A (en) 2003-12-17
DE60221793T2 (en) 2008-06-05
DE60221793D1 (en) 2007-09-27
EP1353584A1 (en) 2003-10-22
ATE369769T1 (en) 2007-09-15
EP1353584B1 (en) 2007-08-15
GB0100388D0 (en) 2001-02-14

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