IT981556B - CHAIR CONTROL WITH DOUBLE TORSION BAR - Google Patents

CHAIR CONTROL WITH DOUBLE TORSION BAR

Info

Publication number
IT981556B
IT981556B IT22057/73A IT2205773A IT981556B IT 981556 B IT981556 B IT 981556B IT 22057/73 A IT22057/73 A IT 22057/73A IT 2205773 A IT2205773 A IT 2205773A IT 981556 B IT981556 B IT 981556B
Authority
IT
Italy
Prior art keywords
torsion bar
chair control
double torsion
chair
double
Prior art date
Application number
IT22057/73A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT981556B publication Critical patent/IT981556B/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • 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
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • A47C7/4454—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs of torsion type
IT22057/73A 1972-04-21 1973-03-23 CHAIR CONTROL WITH DOUBLE TORSION BAR IT981556B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00246381A US3813073A (en) 1972-04-21 1972-04-21 Dual torsion bar chair control

Publications (1)

Publication Number Publication Date
IT981556B true IT981556B (en) 1974-10-10

Family

ID=22930425

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22057/73A IT981556B (en) 1972-04-21 1973-03-23 CHAIR CONTROL WITH DOUBLE TORSION BAR

Country Status (9)

Country Link
US (1) US3813073A (en)
JP (1) JPS4921258A (en)
AU (1) AU5343773A (en)
BE (1) BE798524A (en)
BR (1) BR7302851D0 (en)
DE (1) DE2317388A1 (en)
FR (1) FR2181415A5 (en)
IT (1) IT981556B (en)
NL (1) NL7305559A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50124062A (en) * 1974-03-15 1975-09-29
US4067610A (en) * 1976-05-10 1978-01-10 Hoover Ball And Bearing Co. Chair control mechanism
CA1109386A (en) * 1978-03-29 1981-09-22 Eddie A.J. Large Resilient mounting for a reclining seat
US4214726A (en) * 1978-11-06 1980-07-29 Steelcase, Inc. Chair control
US4344369A (en) * 1980-03-31 1982-08-17 Noord Andrew J Van Table with extensible top
US4438978A (en) * 1981-11-18 1984-03-27 Tor Arild Tilt back mechanism for a chair
AU588332B2 (en) * 1986-07-04 1989-09-14 Tachi-S Co., Ltd. Seat suspension device
US4718726A (en) * 1987-07-07 1988-01-12 Estkowski Michael H Chair seat tilt control
US4890810A (en) * 1988-04-14 1990-01-02 Tachi-S Co., Ltd. Seat suspension device
US4884777A (en) * 1988-07-29 1989-12-05 Tachi-S Co., Ltd. Seat suspension device
US5029940A (en) * 1990-01-16 1991-07-09 Westinghouse Electric Corporation Chair tilt and chair height control apparatus
IT1247369B (en) * 1991-03-01 1994-12-12 Loris Miotto MECHANICAL DEVICE, PARTICULARLY FOR HANDLING AND SELECTIVE LOCKING OF A SESSION
NO324513B1 (en) * 2006-03-02 2007-11-05 Jurek Buchacz Rocker mechanism for a chair, especially an office or work chair
MX2009003765A (en) 2006-10-04 2009-05-08 Formway Forniture Ltd A chair.
USD600051S1 (en) 2008-04-09 2009-09-15 Formway Furniture Limited Chair back
USD604535S1 (en) 2008-04-09 2009-11-24 Formway Furniture Limited Chair
US7841664B2 (en) * 2008-06-04 2010-11-30 Steelcase Inc. Chair with control system
CA131020S (en) 2008-12-12 2010-02-03 Formway Furniture Ltd Chair

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638148A (en) * 1947-07-30 1953-05-12 Goodrich Co B F Seat suspension
US2711211A (en) * 1952-04-16 1955-06-21 Tan Sad Chair Co 1931 Ltd Resiliently mounted back rest
CA869337A (en) * 1969-09-23 1971-04-27 Doerner Products Co. Limited Chair control with support for the torsion spring
US3659819A (en) * 1970-06-08 1972-05-02 Steelcase Inc Chair iron
US3740014A (en) * 1972-01-20 1973-06-19 Swenson Corp Adjustable seat assembly for vehicle

Also Published As

Publication number Publication date
FR2181415A5 (en) 1973-11-30
DE2317388A1 (en) 1973-11-08
BE798524A (en) 1973-08-16
AU5343773A (en) 1974-09-19
JPS4921258A (en) 1974-02-25
BR7302851D0 (en) 1974-07-25
NL7305559A (en) 1973-10-23
US3813073A (en) 1974-05-28

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