DE69403676T2 - HEIGHT-ADJUSTABLE ROTARY COLUMN FOR OFFICE CHAIR - Google Patents

HEIGHT-ADJUSTABLE ROTARY COLUMN FOR OFFICE CHAIR

Info

Publication number
DE69403676T2
DE69403676T2 DE69403676T DE69403676T DE69403676T2 DE 69403676 T2 DE69403676 T2 DE 69403676T2 DE 69403676 T DE69403676 T DE 69403676T DE 69403676 T DE69403676 T DE 69403676T DE 69403676 T2 DE69403676 T2 DE 69403676T2
Authority
DE
Germany
Prior art keywords
chamber
compartment
height
column
upper compartment
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 - Fee Related
Application number
DE69403676T
Other languages
German (de)
Other versions
DE69403676D1 (en
Inventor
Alessio Bergamasco
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.)
Lifter S A
Original Assignee
Lifter S A
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 Lifter S A filed Critical Lifter S A
Application granted granted Critical
Publication of DE69403676D1 publication Critical patent/DE69403676D1/en
Publication of DE69403676T2 publication Critical patent/DE69403676T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Special Chairs (AREA)
  • Seats For Vehicles (AREA)
  • Prostheses (AREA)
  • Golf Clubs (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

Amortized swivel column for office chair of the type with two cylindrical bodies: a base column (2); a piston tube (1); a command rod (11) axially slideable within said tube to start a piston with inferior valve (114-115) that allows or prevents, depending on its position, the pouring of a fluid into an upper compartment (SS+S) between two chambers respectively upper (SS) and lower (S), to make possible the lengthening or shortening of the entire column in a condition of indifferent equilibrium, in which: said lower chamber of upper compartment (S) is connected directly to the bottom chamber of said lower compartment (I); in said upper (SS) and lower(S) chambers of said upper compartment (SS+S) and in said bottom chamber of said lower compartment (I) only compressed air (a) is found; in such a way that: when one wishes to very the height, one moves the said command rod (11) axially until said valve (114-115) puts said lower chamber (S) into communication (122-123) with said upper chamber (SS) in said upper compartment, allowing air to be drawn for compensation; when one sits down, with the height variation command blocked by means of moving the said command rod in a position in which said pouring is not possible, said piston tube (10-13-131) descends between the said base column pressing the base air chamber (1) and said lower chamber (S), and vice versa with an elastic return if there is no compression.
DE69403676T 1993-12-10 1994-12-01 HEIGHT-ADJUSTABLE ROTARY COLUMN FOR OFFICE CHAIR Expired - Fee Related DE69403676T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD930245A IT1262248B (en) 1993-12-10 1993-12-10 SWIVEL CUSHIONED COLUMN FOR OFFICE CHAIR
PCT/IT1994/000200 WO1995015705A1 (en) 1993-12-10 1994-12-01 Amortized swivel column for office chair

Publications (2)

Publication Number Publication Date
DE69403676D1 DE69403676D1 (en) 1997-07-10
DE69403676T2 true DE69403676T2 (en) 1997-12-18

Family

ID=11421438

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69403676T Expired - Fee Related DE69403676T2 (en) 1993-12-10 1994-12-01 HEIGHT-ADJUSTABLE ROTARY COLUMN FOR OFFICE CHAIR

Country Status (7)

Country Link
EP (1) EP0732885B1 (en)
AT (1) ATE153839T1 (en)
AU (1) AU1119195A (en)
DE (1) DE69403676T2 (en)
IT (1) IT1262248B (en)
PL (1) PL175471B1 (en)
WO (1) WO1995015705A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1293250B1 (en) 1997-07-17 1999-02-16 Nerio Righi COMPRESSED AIR COLUMN, CUSHIONED AND ROTATING, PARTICULARLY FOR OFFICE CHAIRS.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1554479A1 (en) * 1965-09-22 1970-01-08 Stabilus Ind Und Handelsgmbh Blockable pneumatic or hydropneumatic adjustment device, especially for furniture
ATE79232T1 (en) * 1987-04-17 1992-08-15 Lifter Srl HYDROPNEUMATIC ADJUSTMENT DEVICE, ESPECIALLY FOR OFFICE CHAIRS.
IT1234608B (en) * 1989-03-13 1992-05-25 Lifter Srl Hydropneumatic telescopic support column for chair

Also Published As

Publication number Publication date
EP0732885B1 (en) 1997-06-04
PL175471B1 (en) 1999-01-29
ITUD930245A1 (en) 1995-06-10
ATE153839T1 (en) 1997-06-15
ITUD930245A0 (en) 1993-12-10
AU1119195A (en) 1995-06-27
IT1262248B (en) 1996-06-19
WO1995015705A1 (en) 1995-06-15
DE69403676D1 (en) 1997-07-10
PL315025A1 (en) 1996-09-30
EP0732885A1 (en) 1996-09-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee