CA992448A - Backrest height adjustment device for office furniture chairs - Google Patents

Backrest height adjustment device for office furniture chairs

Info

Publication number
CA992448A
CA992448A CA191,455A CA191455A CA992448A CA 992448 A CA992448 A CA 992448A CA 191455 A CA191455 A CA 191455A CA 992448 A CA992448 A CA 992448A
Authority
CA
Canada
Prior art keywords
adjustment device
height adjustment
office furniture
backrest height
furniture chairs
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.)
Expired
Application number
CA191,455A
Inventor
James W. Lannert
Dean W. Abrahamson
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.)
All Steel Inc
Original Assignee
All Steel 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 All Steel Inc filed Critical All Steel Inc
Application granted granted Critical
Publication of CA992448A publication Critical patent/CA992448A/en
Expired 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
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/402—Supports for the head or the back for the back adjustable in height
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32426—Plural distinct positions
    • Y10T403/32442—At least one discrete position
CA191,455A 1973-05-25 1974-01-31 Backrest height adjustment device for office furniture chairs Expired CA992448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00364101A US3854772A (en) 1973-05-25 1973-05-25 Backrest height adjustment device for office furniture chairs

Publications (1)

Publication Number Publication Date
CA992448A true CA992448A (en) 1976-07-06

Family

ID=23433018

Family Applications (1)

Application Number Title Priority Date Filing Date
CA191,455A Expired CA992448A (en) 1973-05-25 1974-01-31 Backrest height adjustment device for office furniture chairs

Country Status (2)

Country Link
US (1) US3854772A (en)
CA (1) CA992448A (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012158A (en) * 1975-09-15 1977-03-15 Harper Henry J Adjustable seat-back mechanism
US4036525A (en) * 1976-04-08 1977-07-19 Gf Business Equipment, Inc. Backrest adjustment mechanism
US4432582A (en) * 1981-12-17 1984-02-21 Wilkhahn-Wilkening & Hahne Gmbh & Company Chair with means for adjusting the inclination of the backrest
FR2525295A1 (en) * 1982-04-15 1983-10-21 Modern Tube Coupling for furniture sections - has brake drum on one piece and cable on other controlled by lever
FR2568457B1 (en) * 1984-08-03 1986-12-19 Vickers Roneo DEVICE FOR ADJUSTING THE HEIGHT OF A BACKREST, PARTICULARLY AN OFFICE SEAT.
USD309383S (en) 1986-05-15 1990-07-24 Steelcase, Inc. Chair seat
USD311286S (en) 1986-05-15 1990-10-16 Steelcase Inc. Chair
USD312003S (en) 1986-05-15 1990-11-13 Steelcase, Inc. Chair seat
USD299799S (en) 1986-05-15 1989-02-14 Steelcase Inc. Chair arm
USD312536S (en) 1986-05-15 1990-12-04 Steelcase, Inc. Chair
US5037158A (en) * 1990-01-16 1991-08-06 Westinghouse Electric Corporation Height adjustment mechanism for chair back
USD318184S (en) 1990-02-09 1991-07-16 Steelcase Inc. Chair
US5382077A (en) * 1992-07-29 1995-01-17 Doerner Products Ltd. Height adjustment mechanism for a chair seat back
IT239565Y1 (en) * 1995-03-21 2001-03-05 Miotto Internat Company HEIGHT ADJUSTMENT DEVICE FOR A CHAIR BACKREST
US5695249A (en) * 1996-06-24 1997-12-09 Lotfi; Mehdian Height adjustment mechanism for chair components
US6059239A (en) * 1998-07-27 2000-05-09 Sican Corp Posture chair for exceptionally heavy occupants
US7770977B2 (en) * 2007-09-20 2010-08-10 Midmark Corporation Floating bearing and clamp system for patient procedures chair mounting and positioning posts
US20120019038A1 (en) * 2010-07-23 2012-01-26 Marcelo Mezzera Back connecting bar for the no-tools connection of a chair back to a chair seat
US8893333B2 (en) 2010-11-18 2014-11-25 Allen Medical Systems, Inc. Surgical head support apparatus
US8555439B2 (en) 2010-11-18 2013-10-15 Allen Medical Systems, Inc. Padded head support
US8806679B2 (en) 2010-11-18 2014-08-19 Allen Medical Systems, Inc. Operating room table adapter
USD708464S1 (en) * 2013-02-11 2014-07-08 Esther Gokhale Chair with traction features
US20200121089A1 (en) * 2018-10-21 2020-04-23 Deborah June Mary Rucci Torso support chair
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames
US11147380B2 (en) * 2019-05-01 2021-10-19 Yoav Suprun Adjustable stool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US320806A (en) * 1885-06-23 Dental chair
US2397382A (en) * 1944-06-19 1946-03-26 Justice E Smith Locking device
US3145053A (en) * 1961-10-13 1964-08-18 Vacudent Mfg Company Stool for dentists

Also Published As

Publication number Publication date
US3854772A (en) 1974-12-17

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