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US20110062758A1 - Item of Seating Furniture with Seat Depth Adjustment - Google Patents

Item of Seating Furniture with Seat Depth Adjustment Download PDF

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Publication number
US20110062758A1
US20110062758A1 US12/878,573 US87857310A US2011062758A1 US 20110062758 A1 US20110062758 A1 US 20110062758A1 US 87857310 A US87857310 A US 87857310A US 2011062758 A1 US2011062758 A1 US 2011062758A1
Authority
US
United States
Prior art keywords
seat
item
backrest frame
carrier
seating furniture
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.)
Abandoned
Application number
US12/878,573
Other languages
English (en)
Inventor
Mark Wiese
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.)
Haworth GmbH
Original Assignee
Haworth GmbH
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 Haworth GmbH filed Critical Haworth GmbH
Assigned to HAWORTH GMBH reassignment HAWORTH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WIESE, MARK
Publication of US20110062758A1 publication Critical patent/US20110062758A1/en
Abandoned 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • 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

Definitions

  • This disclosure relates generally to an item of seating furniture, in particular a chair, with a seat depth adjustment.
  • an item of seating furniture of the type mentioned at the beginning in which the seating comfort is not impaired, is distinguished by a simple construction and also is being suitable for use with synchronous mechanisms.
  • the item of seating furniture is preferably provided with a lumbar support, wherein the lumbar support is fastened on a lumbar support carrier which is mounted at one end on the backrest frame and at the other end on the lower backrest frame.
  • the lumbar support can thereby follow a pivoting of the lower backrest frame and can thus be kept in an optimum position in relation to the seat even when the seat depth is adjusted.
  • the lumbar support carrier is provided with a transverse carrier and a longitudinal carrier which is connected to the transverse carrier and to the lower backrest frame, wherein the longitudinal carrier preferably has a telescopic structure, and the lumbar support is mounted displaceably on the longitudinal carrier.
  • the lumbar support is preferably provided with adjustment means for adjusting the supporting depth.
  • FIG. 1 shows a central section of an office swivel chair
  • FIG. 2 shows a side illustration of the office swivel chair without a seat cushion
  • FIG. 3 shows a perspective illustration of the frame construction of the office swivel chair
  • FIG. 4 shows a top view of the frame construction.
  • an office chair comprises a seat with a seat cushion carrier 5 and a seat cushion 3 , and a backrest frame 7 .
  • the seat 1 is mounted displaceably forward and rearward on a seat carrier 9 , wherein the seat carrier 9 and the backrest frame 7 are connected to a main carrier 11 which is fastened to a chair pillar 13 .
  • FIG. 1 shows a seat mechanism 19 which permits a coordinated adjustment of the backrest frame 7 and seat, but does not relate to the adjustment of the seat depth and therefore is not explained further.
  • a lower backrest frame 17 which is connected at the lower end thereof to the rear edge of the seat 1 is mounted pivotably on the backrest frame 7 . Furthermore, a lumbar support 15 is provided, said lumbar support being mounted on a lumbar support carrier comprising a transverse carrier 21 and a longitudinal carrier 23 .
  • FIG. 3 shows the frame construction of the chair without a seat cushion. It is apparent from the illustration that the transverse carrier 21 extends between two struts of the backrest frame 7 .
  • the longitudinal carrier 23 which extends with respect to a transversely running strut of the lower backrest frame 17 , is fastened in the center of the transverse carrier 21 . Furthermore, the longitudinal carrier 23 has a telescopic connection 25 .
  • the backrest frame 17 for its part, is connected to the backrest frame 7 via an articulated connection 29 comprising lamellas.
  • FIG. 3 furthermore shows that the seat cushion carrier 5 is designed as a plate which is manufactured from flexible material and, in the center, has a web 31 extending from the front rearward.
  • the web 31 rests on the seat carrier 9 ( FIG. 1 ) and can be connected to the seat mechanism 19 .
  • the resting action and the flexibility permit dynamic seating as the right/left loading changes.
  • the seat cushion carrier is provided with slots 35 which extend parallel to the side edges of the seat cushion carrier, and with slots 37 which extend parallel to the rear edge of said seat cushion carrier, in order to further increase the flexibility.
  • the seat cushion carrier 5 is provided with slots 39 which extend from the side edge toward the web 31 .
  • the length of said slots 39 increases the closer said slots are arranged to the rear edge of the seat cushion carrier 5 .
  • FIG. 4 This figure furthermore shows adjustment means 41 for adjusting the supporting depth of the lumbar support 15 , i.e. for adjustment in the seat depth direction.
  • the adjustment means 41 are designed in such a manner that they permit a depth adjustment of the lumbar support 15 separately, on the right and left, such as, for example, via eccentrics.
  • FIG. 2 shows the seat cushion carrier 5 in a central position.
  • the backrest carrier in the use state of the chair, is provided with a fabric covering, upholstery or the like.
  • the seat 1 can be secured in any of the intermediate positions thereof between the position located furthest to the rear and the position located furthest to the front.
  • a rack (not illustrated) is preferably provided on the seat cushion carrier 5 , which rack can be brought into engagement with suitable tooth elements and can be actuated via a button 43 .
  • the seat depth adjustment may also be used in other items of seating furniture, such as four-legged chairs, armchairs, sofas, etc.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US12/878,573 2009-09-16 2010-09-09 Item of Seating Furniture with Seat Depth Adjustment Abandoned US20110062758A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09011823.3A EP2298131B1 (de) 2009-09-16 2009-09-16 Sitzmöbel mit Sitztiefenverstellung
EP09011823.3 2009-09-16

Publications (1)

Publication Number Publication Date
US20110062758A1 true US20110062758A1 (en) 2011-03-17

Family

ID=41800389

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/878,573 Abandoned US20110062758A1 (en) 2009-09-16 2010-09-09 Item of Seating Furniture with Seat Depth Adjustment

Country Status (5)

Country Link
US (1) US20110062758A1 (de)
EP (1) EP2298131B1 (de)
CA (1) CA2714756A1 (de)
ES (1) ES2363707T1 (de)
RU (1) RU2010138240A (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD703988S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
USD703987S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
USD704487S1 (en) 2013-06-07 2014-05-13 Steelcase Inc. Chair
USD706547S1 (en) 2013-06-07 2014-06-10 Steelcase Inc. Chair
USD707976S1 (en) 2013-06-07 2014-07-01 Steelcase Inc. Chair
USD721529S1 (en) 2013-06-07 2015-01-27 Steelcase Inc. Handle apparatus
US20160120320A1 (en) * 2013-06-07 2016-05-05 Okamura Corporation Chair
US9661930B2 (en) 2012-09-21 2017-05-30 Steelcase Inc. Chair construction
USD846294S1 (en) 2017-05-25 2019-04-23 Steelcase Inc. Seating arrangement
USD851418S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD851417S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD851952S1 (en) 2017-05-25 2019-06-25 Steelcase Inc. Seating arrangement
USD852526S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852524S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852525S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
USD907383S1 (en) 2019-05-31 2021-01-12 Steelcase Inc. Chair with upholstered back
USD907935S1 (en) 2019-05-31 2021-01-19 Steelcase Inc. Chair
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
USD1063474S1 (en) 2022-09-07 2025-02-25 Steelcase Inc. Chair

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452486A (en) * 1980-09-24 1984-06-05 Otto Zapf Chair type furniture
US4810033A (en) * 1987-02-12 1989-03-07 Kemman & Koch Adjustable backrest
US4830429A (en) * 1987-01-23 1989-05-16 Michel Petitjean Device for operating a multiple position armchair, seat or couch, including a means for supporting the small of the back
US5582459A (en) * 1993-09-30 1996-12-10 Itoki Crebio Corporation Chair having tiltable seat back
US6913316B2 (en) * 2000-10-16 2005-07-05 Kokuyo Co., Ltd. Chair
US6945605B2 (en) * 2000-10-16 2005-09-20 Kokuyo Co., Ltd. Chair having a slide mechanism for the seat
US7000987B2 (en) * 2000-02-17 2006-02-21 Richard Van Seenus Nederland B.V. Device for supporting a seated person and method for adjusting, designing and/or manufacturing such a device
US7134722B2 (en) * 2002-02-08 2006-11-14 Kokuyo Co., Ltd. Chair

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301578A (fr) * 1961-09-21 1962-08-17 Chaise ou fauteuil à dossier galbé
JPS56162051U (de) * 1980-05-01 1981-12-02
DE29617154U1 (de) * 1996-10-02 1996-12-05 Koinor Polstermöbel GmbH & Co KG, 96247 Michelau Polstersessel oder Polsterelement mit verstellbarem Sitz- und Rückenpolster
JP3585013B2 (ja) * 1996-12-24 2004-11-04 株式会社イトーキクレビオ 椅子における背もたれの支持構造
JP3553302B2 (ja) 1996-12-24 2004-08-11 株式会社イトーキクレビオ 椅子における背もたれの支持構造
DE20108172U1 (de) 2001-05-11 2001-08-09 Mayer Sitzmöbel GmbH & Co. KG, 96257 Redwitz Stuhl mit Rückenlehne, die zur Einstellung der Sitztiefe relativ gegenüber dem Sitzteil verstellbar ist
DE102004047619A1 (de) * 2004-09-30 2006-04-13 Hukla-Werke GmbH Matratzen- und Polstermöbelfabriken Sitzmöbel
WO2008018117A1 (fr) * 2006-08-07 2008-02-14 Itoki Corporation Fauteuil
US7490904B2 (en) * 2007-06-06 2009-02-17 Hogg Mark G Decreased skin shear device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452486A (en) * 1980-09-24 1984-06-05 Otto Zapf Chair type furniture
US4830429A (en) * 1987-01-23 1989-05-16 Michel Petitjean Device for operating a multiple position armchair, seat or couch, including a means for supporting the small of the back
US4810033A (en) * 1987-02-12 1989-03-07 Kemman & Koch Adjustable backrest
US5582459A (en) * 1993-09-30 1996-12-10 Itoki Crebio Corporation Chair having tiltable seat back
US7000987B2 (en) * 2000-02-17 2006-02-21 Richard Van Seenus Nederland B.V. Device for supporting a seated person and method for adjusting, designing and/or manufacturing such a device
US6913316B2 (en) * 2000-10-16 2005-07-05 Kokuyo Co., Ltd. Chair
US6945605B2 (en) * 2000-10-16 2005-09-20 Kokuyo Co., Ltd. Chair having a slide mechanism for the seat
US7134722B2 (en) * 2002-02-08 2006-11-14 Kokuyo Co., Ltd. Chair

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9661930B2 (en) 2012-09-21 2017-05-30 Steelcase Inc. Chair construction
US10674826B2 (en) 2012-09-21 2020-06-09 Steelcase Inc. Chair construction
US9913540B2 (en) 2012-09-21 2018-03-13 Steelcase Inc. Chair construction
USD707976S1 (en) 2013-06-07 2014-07-01 Steelcase Inc. Chair
USD703987S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
USD721529S1 (en) 2013-06-07 2015-01-27 Steelcase Inc. Handle apparatus
US20160120320A1 (en) * 2013-06-07 2016-05-05 Okamura Corporation Chair
USD706547S1 (en) 2013-06-07 2014-06-10 Steelcase Inc. Chair
USD704487S1 (en) 2013-06-07 2014-05-13 Steelcase Inc. Chair
US10159350B2 (en) * 2013-06-07 2018-12-25 Okamura Corporation Chair
USD703988S1 (en) 2013-06-07 2014-05-06 Steelcase Inc. Chair
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
US10813459B2 (en) 2016-06-09 2020-10-27 Steelcase Inc. Seating arrangement
US11583082B2 (en) * 2016-06-09 2023-02-21 Steelcase Inc. Seating arrangement
US12514369B2 (en) 2016-06-09 2026-01-06 Steelcase Inc. Seating arrangement
USD876139S1 (en) 2017-05-25 2020-02-25 Steelcase Inc. Seating arrangement
USD851417S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD876140S1 (en) 2017-05-25 2020-02-25 Steelcase Inc. Seating arrangement
USD852524S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852526S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852525S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD846294S1 (en) 2017-05-25 2019-04-23 Steelcase Inc. Seating arrangement
USD851952S1 (en) 2017-05-25 2019-06-25 Steelcase Inc. Seating arrangement
USD851418S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
USD907383S1 (en) 2019-05-31 2021-01-12 Steelcase Inc. Chair with upholstered back
USD947560S1 (en) 2019-05-31 2022-04-05 Steelcase Inc. Chair
USD947559S1 (en) 2019-05-31 2022-04-05 Steelcase Inc. Chair with upholstered back
USD907935S1 (en) 2019-05-31 2021-01-19 Steelcase Inc. Chair
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US12161232B2 (en) 2019-12-13 2024-12-10 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
USD1063474S1 (en) 2022-09-07 2025-02-25 Steelcase Inc. Chair

Also Published As

Publication number Publication date
CA2714756A1 (en) 2011-03-16
EP2298131B1 (de) 2015-04-08
ES2363707T1 (es) 2011-08-12
RU2010138240A (ru) 2012-03-20
EP2298131A1 (de) 2011-03-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HAWORTH GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WIESE, MARK;REEL/FRAME:024962/0268

Effective date: 20100907

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION