WO2000078185A3 - Chair construction - Google Patents

Chair construction Download PDF

Info

Publication number
WO2000078185A3
WO2000078185A3 PCT/US2000/014720 US0014720W WO0078185A3 WO 2000078185 A3 WO2000078185 A3 WO 2000078185A3 US 0014720 W US0014720 W US 0014720W WO 0078185 A3 WO0078185 A3 WO 0078185A3
Authority
WO
WIPO (PCT)
Prior art keywords
lumbar
seat
changing
support structure
armrests
Prior art date
Application number
PCT/US2000/014720
Other languages
French (fr)
Other versions
WO2000078185A2 (en
Inventor
Douglas C Ball
Leon Goldick
Alain Deslauriers
Jeff G Sokalski
Original Assignee
Steelcase 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 Steelcase Inc filed Critical Steelcase Inc
Priority to CA002371901A priority Critical patent/CA2371901A1/en
Priority to EP00937886A priority patent/EP1191863A4/en
Priority to MXPA01012487A priority patent/MXPA01012487A/en
Publication of WO2000078185A2 publication Critical patent/WO2000078185A2/en
Publication of WO2000078185A3 publication Critical patent/WO2000078185A3/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
    • A47C1/022—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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • 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
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • A47C1/0305—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03272—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
    • A47C1/03261—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
    • A47C1/03274—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 of torsion type
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. 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
    • A47C7/36—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
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Abstract

A chair (50) includes a base (51) having a control (52), and a seat and a back tilt bracket (54) pivoted to the control (52) for synchronous movement. An angularly-adjustable extension (56) is adjustably supported on the back tilt bracket (54) and is pivotally connected to a back support structure (57) and a backrest frame (58) in a four-bar linkage arrangement. The back support structure (57) includes a spine assembly (60) and armrests (64) are operably supported on the spine assembly (60) for vertical adjustment by an armrest mount (62). The armrests pivot at an angular rate between a rate of the seat and the back during recline of the back. A lumbar slide (68) slidably engages a back shell (66) for changing a vertical shape of the lumbar section, and lumbar side arms (69) engage a rear surface of the back shell (66) for changing a horizontal shape of the lumbar section (67).
PCT/US2000/014720 1999-06-17 2000-05-25 Chair construction WO2000078185A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002371901A CA2371901A1 (en) 1999-06-17 2000-05-25 Chair construction
EP00937886A EP1191863A4 (en) 1999-06-17 2000-05-25 Chair construction
MXPA01012487A MXPA01012487A (en) 1999-06-17 2000-05-25 Chair construction.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13959999P 1999-06-17 1999-06-17
US60/139,599 1999-06-17

Publications (2)

Publication Number Publication Date
WO2000078185A2 WO2000078185A2 (en) 2000-12-28
WO2000078185A3 true WO2000078185A3 (en) 2001-06-28

Family

ID=22487449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/014720 WO2000078185A2 (en) 1999-06-17 2000-05-25 Chair construction

Country Status (5)

Country Link
US (5) US6523898B1 (en)
EP (1) EP1191863A4 (en)
CA (1) CA2371901A1 (en)
MX (1) MXPA01012487A (en)
WO (1) WO2000078185A2 (en)

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US20040046432A1 (en) 2004-03-11
US6913315B2 (en) 2005-07-05
US20050093354A1 (en) 2005-05-05
EP1191863A4 (en) 2004-06-09
US6698833B2 (en) 2004-03-02
US6523898B1 (en) 2003-02-25
EP1191863A2 (en) 2002-04-03
WO2000078185A2 (en) 2000-12-28
MXPA01012487A (en) 2002-06-04
US20030047982A1 (en) 2003-03-13
CA2371901A1 (en) 2000-12-28
US20070057549A1 (en) 2007-03-15
US7740315B2 (en) 2010-06-22

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