USB597410I5 - - Google Patents

Info

Publication number
USB597410I5
USB597410I5 US59741075A USB597410I5 US B597410 I5 USB597410 I5 US B597410I5 US 59741075 A US59741075 A US 59741075A US B597410 I5 USB597410 I5 US B597410I5
Authority
US
United States
Prior art keywords
seat
torsion bar
frame
chair control
chair
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.)
Pending
Application number
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 filed Critical
Priority to US05/597,410 priority Critical patent/US4000925A/en
Publication of USB597410I5 publication Critical patent/USB597410I5/en
Application granted granted Critical
Publication of US4000925A publication Critical patent/US4000925A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A47C7/441—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with adjustable elasticity
    • 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

Landscapes

  • Chairs Characterized By Structure (AREA)

Abstract

A chair control for an office-type chair having a seat supporting frame upon which a bucket-type seat is supported. A seat back supporting structure is pivotally supported at its lower end on the frame and is provided at its upper end with a conventional back member. Intermediate its ends, the seat back supporting structure is adjustably connected to a torsion bar so that the torsion bar will yieldably resist backward tilting movement of the seat back member. The torsion bar is mounted on the seat frame and extends front to rear of the seat. This enables a low profile assembly of the chair control and location of the chair control within the outer shell which forms a part of the bucket seat.
US05/597,410 1975-07-21 1975-07-21 Chair control with front to rear torsion bar Expired - Lifetime US4000925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/597,410 US4000925A (en) 1975-07-21 1975-07-21 Chair control with front to rear torsion bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/597,410 US4000925A (en) 1975-07-21 1975-07-21 Chair control with front to rear torsion bar

Publications (2)

Publication Number Publication Date
USB597410I5 true USB597410I5 (en) 1976-03-30
US4000925A US4000925A (en) 1977-01-04

Family

ID=24391381

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/597,410 Expired - Lifetime US4000925A (en) 1975-07-21 1975-07-21 Chair control with front to rear torsion bar

Country Status (1)

Country Link
US (1) US4000925A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498908A1 (en) * 1981-02-04 1982-08-06 Kuhn Kurt OFFICE CHAIR WITH VARIABLE TILT
EP0135865A2 (en) * 1983-09-13 1985-04-03 Maridyne, Inc. Chair tilting mechanism
CN115107603A (en) * 2022-06-24 2022-09-27 重庆长安汽车股份有限公司 Force limiting mechanism for seat overturning movement in collision, seat and vehicle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4438978A (en) * 1981-11-18 1984-03-27 Tor Arild Tilt back mechanism for a chair
DE3335148A1 (en) * 1983-09-28 1985-04-11 Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder DEVICE FOR SPRING SWIVELING OF A COMPONENT
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating
US5567012A (en) * 1986-04-10 1996-10-22 Steelcase, Inc. Chair control
US6585320B2 (en) * 2001-06-15 2003-07-01 Virco Mgmt. Corporation Tilt control mechanism for a tilt back chair
US7290836B2 (en) * 2003-08-28 2007-11-06 A-Dec, Inc. Patient chair
US9713381B2 (en) 2015-06-11 2017-07-25 Davis Furniture Industries, Inc. Chair

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB422501A (en) * 1933-09-26 1935-01-14 Brooks J B & Co Ltd Improvements relating to adjustable back-rests of chairs, seats or stools
DE1292016B (en) * 1964-12-23 1969-04-03 Fritzmeier Rupert Vibration suspension for seats, especially motor vehicle seats
DE1902670C3 (en) * 1968-02-01 1975-11-27 Gerdi Kerstholt Geb. Spaeth Seat with adjustable seat part and adjustable backrest
DE1957892A1 (en) * 1968-11-18 1970-08-13 Stewart Warner Corp Rubber spring arrangement for a chair adjustment
CA917553A (en) * 1969-08-27 1972-12-26 Stewart-Warner Corporation Chair control structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498908A1 (en) * 1981-02-04 1982-08-06 Kuhn Kurt OFFICE CHAIR WITH VARIABLE TILT
EP0135865A2 (en) * 1983-09-13 1985-04-03 Maridyne, Inc. Chair tilting mechanism
EP0135865A3 (en) * 1983-09-13 1985-12-27 Maridyne, Inc. Chair tilting mechanism
CN115107603A (en) * 2022-06-24 2022-09-27 重庆长安汽车股份有限公司 Force limiting mechanism for seat overturning movement in collision, seat and vehicle
CN115107603B (en) * 2022-06-24 2024-03-22 重庆长安汽车股份有限公司 Force limiting mechanism for overturning movement of seat in collision, seat and vehicle

Also Published As

Publication number Publication date
US4000925A (en) 1977-01-04

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BANK ONE, LEXINGTON, NA, 200 WEST VINE STREET LEXI

Free format text: SECURITY INTEREST;ASSIGNOR:PIONEER MANUFACTURING, INC.,;REEL/FRAME:005077/0553

Owner name: PIONEER MANUFACTURING, INC., LEMONS MILL PIKE, GEO

Free format text: ASSIGNS THE ENTIRE INTEREST EFFECTIVE AS MAY 9, 1984;ASSIGNOR:HOOVER UNIVERSAL, INC.;REEL/FRAME:005113/0044

Effective date: 19670124

AS Assignment

Owner name: HOOVER UNIVERSAL INC., A CORP. OF MI

Free format text: CHANGE OF NAME;ASSIGNOR:HOOVER BALL & BEARING COMPANY;REEL/FRAME:005224/0442

Effective date: 19780117

Owner name: HOOVER BALL AND BEARING COMPANY, MICHIGAN

Free format text: MERGER;ASSIGNOR:HOOVER BALL AND BEARING COMPANY;REEL/FRAME:005241/0077

Effective date: 19770711