Height-adjustable support device, in particular for the seat of

Details Height-adjustable support device, in particular for the seat of Height-adjustable support device, in particular for the seat of

1993-08-10

1995-07-18

Foss, J. Franklin

Supports

Stand

Standard type

2481887, 29734419, F16M 1100

Patent

active

054334098

ABSTRACT:
The invention relates to a height-adjustable support device, in particular for the seat (12) of a chair (10), having a base (14) and an upright tube (16) disposed on the base vertically along a center axis (11) thereof, in which a height-adjustment element (18), preferably a gas spring, is arranged so as to be rotatably and/or vertically displaceably guided by a guide surface (34c) disposed concentrically to the center axis and so as to be supported on a support (28) in the lower end section of the upright tube (16). The guide surface (34c) and the support (28) are integrally-formed with the upright tube (16) itself, and the upright tube (16) and the base (14) are made in one-piece of a plastic material.

REFERENCES:
patent: 4607897 (1986-08-01), Schwartz
patent: 4662681 (1987-05-01), Favaretto
patent: 4744536 (1988-05-01), Bancalari
patent: 4756496 (1988-07-01), Hosan
patent: 4899969 (1990-02-01), Bauer
patent: 5039164 (1991-08-01), Gibbs
patent: 5131615 (1992-07-01), Hosan
patent: 5149035 (1992-09-01), Bonnema
patent: 5161786 (1992-11-01), Cohen
patent: 5284312 (1994-02-01), Dony

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