CA1137864A - Height adjustable chair base - Google Patents

Height adjustable chair base

Info

Publication number
CA1137864A
CA1137864A CA000352370A CA352370A CA1137864A CA 1137864 A CA1137864 A CA 1137864A CA 000352370 A CA000352370 A CA 000352370A CA 352370 A CA352370 A CA 352370A CA 1137864 A CA1137864 A CA 1137864A
Authority
CA
Canada
Prior art keywords
nut
column
detent
spring
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.)
Expired
Application number
CA000352370A
Other languages
English (en)
French (fr)
Inventor
Duane M. Beukema
Jack R. Knoblauch
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.)
Steelcase Inc
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 CA1137864A publication Critical patent/CA1137864A/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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/24—Chairs or stools with vertically-adjustable seats with vertical spindle
    • 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
    • A47C3/18—Chairs or stools with rotatable seat

Landscapes

  • Chairs Characterized By Structure (AREA)
CA000352370A 1979-06-21 1980-05-21 Height adjustable chair base Expired CA1137864A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/050,660 US4324382A (en) 1979-06-21 1979-06-21 Height adjustable chair base
US50,660 1979-06-21

Publications (1)

Publication Number Publication Date
CA1137864A true CA1137864A (en) 1982-12-21

Family

ID=21966606

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000352370A Expired CA1137864A (en) 1979-06-21 1980-05-21 Height adjustable chair base

Country Status (6)

Country Link
US (1) US4324382A (enEXAMPLES)
EP (1) EP0021813B1 (enEXAMPLES)
JP (1) JPS563008A (enEXAMPLES)
AU (1) AU530563B2 (enEXAMPLES)
CA (1) CA1137864A (enEXAMPLES)
DE (1) DE3065453D1 (enEXAMPLES)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394001A (en) * 1981-03-18 1983-07-19 Haworth, Inc. Height-adjusting mechanism for chair seat
US4455010A (en) * 1981-07-21 1984-06-19 Robert Butler Resilient support
US4479627A (en) * 1983-02-10 1984-10-30 Cramer Inc. Chair height adjustment mechanism
US4540148A (en) * 1983-11-10 1985-09-10 Jann James M Chair height adjustment mechanism
NO842262L (no) * 1984-06-05 1985-12-06 Haag A S Mekanisk loefteanordning.
EP0185726B1 (en) * 1984-06-18 1991-11-27 WERNER, Per, G. Improvements in adjustable telescopic devices
US4598892A (en) * 1984-07-27 1986-07-08 Haworth, Inc. Mechanical chair-height control mechanism
DE8530227U1 (de) * 1984-11-14 1985-12-05 Fehlbaum & Co., Dornach Dreh- und höhenverstellbarer Einsäulen-Präsentierständer
US4709894A (en) * 1986-04-10 1987-12-01 Steelcase Inc. Slip connector for weight actuated height adjustors
US4720071A (en) * 1986-12-19 1988-01-19 Haworth, Inc. Split nut mechanical height adjusting mechanism for chair
US4728072A (en) * 1987-02-09 1988-03-01 Quest Product Development, Ltd. Height adjustment apparatus
JPS6431523U (enEXAMPLES) * 1987-08-20 1989-02-27
DE3836397A1 (de) * 1988-10-26 1990-05-03 Stabilus Gmbh Laengenverstellbarer ausloesestoessel fuer einen ausloesemechanismus von gasfedern zur hoehenverstellung von moebeln
US4903930A (en) * 1988-11-04 1990-02-27 Jann James M Chair height adjustment mechanism
US5342012A (en) * 1992-01-28 1994-08-30 Ryu Chang Keun Height adjusting mechanism for swivel chair
US5791611A (en) * 1996-08-09 1998-08-11 Steelcase Inc. Hub for chair base
US20150048223A1 (en) * 2013-08-19 2015-02-19 Royal Technologies Corporation Chair Base Assembly
US20190083845A1 (en) * 2017-09-15 2019-03-21 Actervis Gmbh Exercise device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE82272C (enEXAMPLES) *
US2026298A (en) * 1934-03-23 1935-12-31 Bell Telephone Labor Inc Revolving chair
US2702075A (en) * 1953-06-19 1955-02-15 Gen Fireproofing Co Swivel chair releasable height adjusting means
US3164357A (en) * 1962-08-27 1965-01-05 Gen Fireproofing Co Chair seat adjusting device
DE1429366A1 (de) * 1964-11-06 1968-11-14 Mauser Kg Drehstuhl
US3391893A (en) * 1966-02-14 1968-07-09 Frank Doerner & Sons Ltd Thrust bearing for a swivel chair
US3385550A (en) * 1966-09-28 1968-05-28 Doerner Products Co Ltd Memory swivel for swivel chair
GB1226763A (enEXAMPLES) 1967-04-27 1971-03-31
FR1592825A (enEXAMPLES) * 1968-11-22 1970-05-19
US3642244A (en) * 1970-01-28 1972-02-15 Gen Fireproofing Co The Height adjustment mechanism for swivel chairs
US3778014A (en) * 1971-07-26 1973-12-11 All Steel Equipment Inc Chair base swivel arrangement
US3799486A (en) * 1972-08-31 1974-03-26 Steelcase Inc Height adjusting mechanism
US3870270A (en) * 1973-10-31 1975-03-11 Harter Corp Fully enclosed, adjustable, support column for a pivotal chair
US3870271A (en) * 1973-10-31 1975-03-11 Harter Corp Fully enclosed, adjustable, support column for a pivotal chair
US4026509A (en) * 1976-01-13 1977-05-31 Herman Miller, Inc. Adjustable standard for swivel chair
US3991965A (en) * 1976-01-27 1976-11-16 Gf Business Equipment, Inc. Chair height adjusting mechanism
US4087070A (en) * 1976-10-07 1978-05-02 Hoover Ball And Bearing Company Swivel chair with non-keywayed main screw
US4046348A (en) * 1976-11-02 1977-09-06 Goodwin John E Adjustable height stool

Also Published As

Publication number Publication date
AU5889280A (en) 1981-01-08
EP0021813A2 (en) 1981-01-07
EP0021813B1 (en) 1983-11-02
JPH0249722B2 (enEXAMPLES) 1990-10-31
JPS563008A (en) 1981-01-13
US4324382A (en) 1982-04-13
DE3065453D1 (en) 1983-12-08
EP0021813A3 (en) 1981-02-11
AU530563B2 (en) 1983-07-21

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Legal Events

Date Code Title Description
MKEX Expiry