GB1324451A - Rocking mechanism for chairs - Google Patents

Rocking mechanism for chairs

Info

Publication number
GB1324451A
GB1324451A GB1904671A GB1324451DA GB1324451A GB 1324451 A GB1324451 A GB 1324451A GB 1904671 A GB1904671 A GB 1904671A GB 1324451D A GB1324451D A GB 1324451DA GB 1324451 A GB1324451 A GB 1324451A
Authority
GB
United Kingdom
Prior art keywords
plate
resilient
rocking
annular
hinge
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
GB1904671A
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.)
PARKER KNOLL Ltd
Original Assignee
PARKER KNOLL Ltd
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 PARKER KNOLL Ltd filed Critical PARKER KNOLL Ltd
Publication of GB1324451A publication Critical patent/GB1324451A/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
    • A47C3/02—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
    • A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

1324451 Rocking chairs PARKER-KNOLL Ltd 31 May 1972 [4 June 1971] 19046/71 Heading A4U A chair includes a rocking mechanism comprising a plate 10, secured to the chair base, and a plate 11, bolted to the chair seat, the plate 11 being rockable in the direction of the arrow A to an extent limited by a resilient hinge connection 14 and a biassing means 22. The hinge consists of a post 15 welded to the plate 11 and passing through an oversize hole 16 in the plate 10, upward rocking of the plate 11 being against the action of an annular resilient spacer 18 and an annular resilient member 19, held in compression between the plate 10 and a clamping nut 20. A plastics brush 17 slidable on the post 15 is located in the hole 16. The rocking movement is further controlled by the biasing means which comprises a second post 23 welded to the plate 11 at an indication thereto equal to half the maximum rocking angle and passing, as a sliding fit, through an aperture 24 in the plate 10, and through an annular block 25 of resilient material which is held under adjustable compression between the plate 10 and a stop nut 26. Stops limiting the rocking movement may be provided and a resilient annular spacer 28 prevents forward tipping. The resilient spacers 18, 28 and members 19, 25 are preferably made of rubber but may be helical coil springs. The fixed plate 10 may be secured to or form the end sections of a yoke by which the chair seat is connected to a pedestal base, the seat being adjustable in height, and a rocking mechanism may be provided centrally or at each side of the chair seat. In modifications an elongated strip of resilient material replaces the resilient spacers of two side-by-side hinge connections, which are controlled by one or more biasing means, or the posts of the hinge and biasing means are welded to different plates.
GB1904671A 1971-06-04 1972-05-31 Rocking mechanism for chairs Expired GB1324451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1904671 1971-06-04

Publications (1)

Publication Number Publication Date
GB1324451A true GB1324451A (en) 1973-07-25

Family

ID=10122848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1904671A Expired GB1324451A (en) 1971-06-04 1972-05-31 Rocking mechanism for chairs

Country Status (3)

Country Link
BE (1) BE784299A (en)
DE (1) DE2226838A1 (en)
GB (1) GB1324451A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664445A (en) * 1984-05-08 1987-05-12 Hag A/S Tilting mechanism for a chair seat or the like
WO1988005276A1 (en) * 1987-01-23 1988-07-28 Peter Opsvik A/S Tilting mechanism, preferably for a chair seat or similar
AT417U1 (en) * 1994-12-15 1995-10-25 Klammer Eduard ARMCHAIR WITH AN ARMCHAIR FRAME AND A SEAT
US5951109A (en) * 1997-04-30 1999-09-14 Haworth, Inc. Chairback with side torsional movement
US6059363A (en) * 1997-04-30 2000-05-09 Haworth, Inc. Chairback with side torsional movement
US6176548B1 (en) 1998-10-23 2001-01-23 Haworth, Inc. Tilt mechanism for chair having adjustable spring characteristics
US6209958B1 (en) 1998-10-23 2001-04-03 Haworth, Inc. Universal tilt mechanism for a chair

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408800A (en) * 1980-06-11 1983-10-11 American Seating Company Office chairs
IT1221578B (en) * 1987-11-19 1990-07-12 Co Fe Mo Spa CHAIR WITH OSCILLATING SEAT BACK AND FORWARD
US5769492A (en) * 1996-12-10 1998-06-23 Jensen; Robert J. Back saver sport seat

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664445A (en) * 1984-05-08 1987-05-12 Hag A/S Tilting mechanism for a chair seat or the like
WO1988005276A1 (en) * 1987-01-23 1988-07-28 Peter Opsvik A/S Tilting mechanism, preferably for a chair seat or similar
AT417U1 (en) * 1994-12-15 1995-10-25 Klammer Eduard ARMCHAIR WITH AN ARMCHAIR FRAME AND A SEAT
US5951109A (en) * 1997-04-30 1999-09-14 Haworth, Inc. Chairback with side torsional movement
US6059363A (en) * 1997-04-30 2000-05-09 Haworth, Inc. Chairback with side torsional movement
US6176548B1 (en) 1998-10-23 2001-01-23 Haworth, Inc. Tilt mechanism for chair having adjustable spring characteristics
US6209958B1 (en) 1998-10-23 2001-04-03 Haworth, Inc. Universal tilt mechanism for a chair

Also Published As

Publication number Publication date
DE2226838A1 (en) 1972-12-21
BE784299A (en) 1972-12-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee