EP1319355A3 - Chair with lumbar support and conforming back - Google Patents

Chair with lumbar support and conforming back Download PDF

Info

Publication number
EP1319355A3
EP1319355A3 EP02027786A EP02027786A EP1319355A3 EP 1319355 A3 EP1319355 A3 EP 1319355A3 EP 02027786 A EP02027786 A EP 02027786A EP 02027786 A EP02027786 A EP 02027786A EP 1319355 A3 EP1319355 A3 EP 1319355A3
Authority
EP
European Patent Office
Prior art keywords
chair
backrest
support surface
lumbar support
flexible portions
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.)
Withdrawn
Application number
EP02027786A
Other languages
German (de)
French (fr)
Other versions
EP1319355A2 (en
Inventor
Michael L. Deiman
Derek Schweikarth
Stephen D. Hatcher
Joseph G. Hasenour
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.)
Kimball International Inc
Original Assignee
Kimball International 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 Kimball International Inc filed Critical Kimball International Inc
Publication of EP1319355A2 publication Critical patent/EP1319355A2/en
Publication of EP1319355A3 publication Critical patent/EP1319355A3/en
Withdrawn legal-status Critical Current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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
    • 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Abstract

A task chair (20) including seat support structure (26), a backrest frame (68, 112, 122, 150) attached to the seat support structure, and a backrest (72a, 72b, 72c, 72d, 72e) supported by the backrest frame. The backrest includes a back support surface (94a, 94b, 94c, 94d, 94e) which may ergonomically conform to a seated user when the user shifts positions while sitting in the chair. The back support surface includes rigid (80a, 80b, 80c, 80d, 80e) and flexible portions (90a, 90b, 90c, 90d, 90e) connected to one another, the flexible portions allowing resilient flexing of the back support surface to create conformance zones which dynamically support the back of a seated user in an ergonomic manner.
EP02027786A 2001-12-14 2002-12-12 Chair with lumbar support and conforming back Withdrawn EP1319355A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34067301P 2001-12-14 2001-12-14
US340673P 2001-12-14

Publications (2)

Publication Number Publication Date
EP1319355A2 EP1319355A2 (en) 2003-06-18
EP1319355A3 true EP1319355A3 (en) 2004-01-02

Family

ID=23334458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027786A Withdrawn EP1319355A3 (en) 2001-12-14 2002-12-12 Chair with lumbar support and conforming back

Country Status (2)

Country Link
US (2) US20030127896A1 (en)
EP (1) EP1319355A3 (en)

Cited By (1)

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US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly

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US8157325B2 (en) * 2003-12-30 2012-04-17 Hni Technologies Inc. Chair back rest with improved resilience and support
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DE102004032765C9 (en) * 2004-07-06 2009-02-26 Volker Wilhelm Eysing Office chair with flexible backrest
US7147282B2 (en) 2004-11-08 2006-12-12 Kimball International, Inc. Chair with backrest depth adjustment mechanism
JP4719905B2 (en) * 2005-10-27 2011-07-06 コクヨ株式会社 Chair
JP5002835B2 (en) * 2005-10-27 2012-08-15 コクヨ株式会社 Member connection structure
JP4945781B2 (en) * 2005-11-11 2012-06-06 コクヨ株式会社 Chair
JP4747311B2 (en) * 2005-11-11 2011-08-17 コクヨ株式会社 Chair
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WO2008112918A1 (en) 2007-03-13 2008-09-18 Hni Technologies Inc. Dynamic chair back lumbar support system
US7784870B2 (en) * 2007-03-13 2010-08-31 Hni Technologies, Inc. Six bar mechanism and control for chair
US8002351B2 (en) 2009-01-26 2011-08-23 Knoll, Inc. Support member
US8602494B2 (en) * 2010-03-16 2013-12-10 Sava Cvek Pivoting task chair
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USD683151S1 (en) 2012-09-20 2013-05-28 Steelcase Inc. Chair
USD698164S1 (en) 2012-09-20 2014-01-28 Steelcase Inc. Chair
USD694538S1 (en) 2012-09-20 2013-12-03 Steelcase Inc. Chair
USD942767S1 (en) 2012-09-20 2022-02-08 Steelcase Inc. Chair assembly
USD697730S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
US8998339B2 (en) 2012-09-20 2015-04-07 Steelcase Inc. Chair assembly with upholstery covering
USD697729S1 (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
USD781605S1 (en) 2015-04-24 2017-03-21 Steelcase Inc. Chair
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US11229294B2 (en) 2012-09-20 2022-01-25 Steelcase Inc. Chair assembly with upholstery covering
USD699061S1 (en) 2012-09-20 2014-02-11 Steelcase Inc. Arm assembly
USD698165S1 (en) 2012-09-20 2014-01-28 Steelcase Inc. Chair
USD697727S1 (en) 2012-09-20 2014-01-21 Steeelcase Inc. Chair
USD688907S1 (en) 2012-09-20 2013-09-03 Steelcase Inc. Arm assembly
USD694537S1 (en) 2012-09-20 2013-12-03 Steelcase Inc. Chair
USD694540S1 (en) 2012-09-20 2013-12-03 Steelcase Inc. Chair
USD697728S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
USD694536S1 (en) 2012-09-20 2013-12-03 Steelcase Inc. Chair
USD699957S1 (en) 2012-09-20 2014-02-25 Steelcase Inc. Chair
USD699959S1 (en) 2012-09-20 2014-02-25 Steelcase Inc. Chair
USD698166S1 (en) 2012-09-20 2014-01-28 Steelcase Inc. Chair
USD699958S1 (en) 2012-09-20 2014-02-25 Steelcase Inc. Chair
USD701053S1 (en) 2012-09-20 2014-03-18 Steelcase Inc. Chair
DE102012109710A1 (en) * 2012-10-11 2014-06-12 Grammer Ag Vehicle seat with changeable backrest shape
USD695034S1 (en) 2012-11-13 2013-12-10 Steelcase Inc. Chair
US9480339B2 (en) 2012-12-31 2016-11-01 Sava Cvek Seat with pelvic support
CN105101845B (en) 2013-03-15 2018-11-09 Hni技术公司 The chair of backrest bending with triggering
USD731833S1 (en) 2014-04-17 2015-06-16 Allsteel Inc. Chair
WO2015160693A1 (en) 2014-04-17 2015-10-22 Hni Technologies Inc. Flex lumbar support
DE102014220695A1 (en) * 2014-10-13 2016-04-28 Haworth Gmbh Chair, especially office chair
USD743180S1 (en) 2014-10-15 2015-11-17 Hni Technologies Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
USD759415S1 (en) 2015-04-24 2016-06-21 Steelcase Inc. Headrest
USD781604S1 (en) 2015-04-24 2017-03-21 Steelcase Inc. Chair
USD758774S1 (en) 2015-04-24 2016-06-14 Steelcase Inc. Headrest assembly
USD760526S1 (en) 2015-04-24 2016-07-05 Steelcase Inc. Headrest assembly
US11071386B2 (en) 2016-06-09 2021-07-27 Sava Cvek Seat pivoting mechanism and chair height locking system
US10667969B2 (en) * 2018-01-16 2020-06-02 Kinetic Innovative Seating System Llc Ergonomically designed seating apparatus
DK201870155A1 (en) * 2018-03-12 2019-09-30 R82 A/S Connection joint
JPWO2020255195A1 (en) * 2019-06-17 2020-12-24
JP7385405B2 (en) 2019-08-30 2023-11-22 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
US11690457B2 (en) 2020-02-04 2023-07-04 Hni Technologies Inc. Chair with flexible internal support
CN213605400U (en) * 2020-08-07 2021-07-06 浙江圣奥家具制造有限公司 Rocking structure of seat backrest

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9004597B2 (en) 2012-09-20 2015-04-14 Steelcase Inc. Chair back mechanism and control assembly
US9010859B2 (en) 2012-09-20 2015-04-21 Steelcase Inc. Chair assembly
US9022476B2 (en) 2012-09-20 2015-05-05 Steelcase Inc. Control assembly for chair
US9027998B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Chair assembly
US9027999B2 (en) 2012-09-20 2015-05-12 Steelcase Inc. Control assembly for chair
US9049935B2 (en) 2012-09-20 2015-06-09 Steelcase Inc. Control assembly for chair
USD742677S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
USD742676S1 (en) 2012-09-20 2015-11-10 Steelcase Inc. Chair
US9345328B2 (en) 2012-09-20 2016-05-24 Steelcase Inc. Chair assembly with upholstery covering
US9451826B2 (en) 2012-09-20 2016-09-27 Steelcase Inc. Chair assembly
US9462888B2 (en) 2012-09-20 2016-10-11 Steelcase Inc. Control assembly for chair
US9492013B2 (en) 2012-09-20 2016-11-15 Steelcase Inc. Chair back mechanism and control assembly

Also Published As

Publication number Publication date
US20050052061A1 (en) 2005-03-10
EP1319355A2 (en) 2003-06-18
US20030127896A1 (en) 2003-07-10

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