WO2002102199B1 - Improved ergonomic chair - Google Patents

Improved ergonomic chair

Info

Publication number
WO2002102199B1
WO2002102199B1 PCT/US2002/018787 US0218787W WO02102199B1 WO 2002102199 B1 WO2002102199 B1 WO 2002102199B1 US 0218787 W US0218787 W US 0218787W WO 02102199 B1 WO02102199 B1 WO 02102199B1
Authority
WO
WIPO (PCT)
Prior art keywords
support
chair
frame
seat
pivot
Prior art date
Application number
PCT/US2002/018787
Other languages
French (fr)
Other versions
WO2002102199A1 (en
Inventor
Marcus C Koepke
Jamie Krull
Jay R Machael
Tim Coffield
Keith L Davis
Amin K Habboub
Matthew J Phillips
Douglas A Schroeder
Craig H Schultz
Erik A Steffensen
Brian R Trego
Eric M Zillig
Original Assignee
Hon Tech 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 Hon Tech Inc filed Critical Hon Tech Inc
Priority to CA002450042A priority Critical patent/CA2450042C/en
Priority to KR1020037016406A priority patent/KR100683984B1/en
Priority to GB0328535A priority patent/GB2392613B/en
Priority to MXPA03011406A priority patent/MXPA03011406A/en
Publication of WO2002102199A1 publication Critical patent/WO2002102199A1/en
Publication of WO2002102199B1 publication Critical patent/WO2002102199B1/en

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
    • 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
    • A47C1/03255—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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A47C7/282—Seat parts with tensioned springs, e.g. of flat type with mesh-like supports, e.g. elastomeric membranes
    • 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

An ergonomic chair (10) includes a four-bag linkage arrangement wherein a lower frame member (100) is provided with a rigid front support (130) and a rigid rear support (120) with a seat member (30) pivotably connected to the front support (130). A back rest (20, 200) has an upper support pivotably connected at an upper end of the rear support (120) of the lower frame. A link member pivotably connects at a first end to a rear support (120) of the seat member and at second end to a lower support of the back rest. This novel arrangement permits tilting movement of the backrest rearwardly relative to the lower frame member causing elevation of a rear portion of the seat member, permitting the feet to remain on the floor and alleviating pressure on the user's thighs, while rotation occurs closely coincident with the pivot axis of the user's hips ad while maintaining a generally uniform gaze line.

Claims

or g na c a m amen e ; rema n ng c a ms unc ange page jA,WHAT IS CLAIMED IS:
1. A chair having a tiltable back and a pivoting seat comprising: a base; a support module attached to said base; a generally horizontally extending frame having a lower front pivot and a higher rear pivot, said frame being rigidly attached to said base; a seat mounted to said horizontally extending frame so as to be pivotable only about said lower front pivot, said seat having a rear portion including a third pivot; a back frame disposed generally vertically and moveable between upright and tilted positions, said back frame having a top part, a bottom part and a middle part, said top and said middle parts for supporting a back, said bottom part being attached to a fourth pivot and said middle part being rotatably connected to said higher rear pivot; and a link member pivotably mounted to said third and said fourth pivots wherein the elevational distance between said third and fourth pivots is greater when said back frame is in said upright position than when said back frame is in said tilted position.
2. The chair of claim 1 wherein the pivotal connections between said support frame means, said seat member, said backrest member, and said link member are configured and arranged such that during reclining of said back member an increasing portion of the user's weight supported by said chair is transferred from said seat support to said backrest member while the mechanical advantage of the linkage lifting said seat member decreases.
3. The chair of claim 1 wherein said link member is connected to said rear support portion of said seat member at an elevation below the elevation of said link member's connection to said second pivot location of said backrest member.
4. The chair of claim 1 wherein said forward first support portion of said frame means extends generally upwardly of said frame means.
5. The chair of claim 1 wherein said rear second support portion of said frame means extends generally upwardly of said frame means.
6. The chair of claim 1 wherein said frame means includes a pair of spaced elongated rigid support members connected to opposite sides of a central base module and defining said forward and rear support portions.
ENDED SHEET (ARTICLE 13)
PCT/US2002/018787 2001-06-15 2002-06-14 Improved ergonomic chair WO2002102199A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002450042A CA2450042C (en) 2001-06-15 2002-06-14 Improved ergonomic chair
KR1020037016406A KR100683984B1 (en) 2001-06-15 2002-06-14 Improved ergonomic chair background of the invention
GB0328535A GB2392613B (en) 2001-06-15 2002-06-14 Improved ergonomic chair
MXPA03011406A MXPA03011406A (en) 2001-06-15 2002-06-14 Improved ergonomic chair background of the invention.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/882,237 2001-06-15
US09/882,237 US6609755B2 (en) 2001-06-15 2001-06-15 Ergonomic chair
US10/077,409 2002-02-15
US10/077,409 US6669292B2 (en) 2001-06-15 2002-02-15 Ergonomic chair

Publications (2)

Publication Number Publication Date
WO2002102199A1 WO2002102199A1 (en) 2002-12-27
WO2002102199B1 true WO2002102199B1 (en) 2004-05-21

Family

ID=26759238

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/018787 WO2002102199A1 (en) 2001-06-15 2002-06-14 Improved ergonomic chair

Country Status (7)

Country Link
US (2) US6609755B2 (en)
KR (1) KR100683984B1 (en)
CN (1) CN100401945C (en)
CA (1) CA2450042C (en)
GB (1) GB2392613B (en)
MX (1) MXPA03011406A (en)
WO (1) WO2002102199A1 (en)

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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
US9027997B2 (en) 2012-09-20 2015-05-12 Steelcasel Inc. Chair assembly
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

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KR100683984B1 (en) 2007-02-20
US20020190553A1 (en) 2002-12-19
KR20040023620A (en) 2004-03-18
CN1514697A (en) 2004-07-21
CN100401945C (en) 2008-07-16
GB0328535D0 (en) 2004-01-14
US20030001420A1 (en) 2003-01-02
US6669292B2 (en) 2003-12-30
CA2450042C (en) 2008-06-17
US6609755B2 (en) 2003-08-26
MXPA03011406A (en) 2005-04-19
CA2450042A1 (en) 2002-12-27
GB2392613B (en) 2005-10-19
GB2392613A (en) 2004-03-10
WO2002102199A1 (en) 2002-12-27

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