Device for adjusting the backrest and/or the seat of chairs

Details Device for adjusting the backrest and/or the seat of chairs Device for adjusting the backrest and/or the seat of chairs

1989-09-13

1991-04-02

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

188300, 248161, 248631, 267131, 297300, F16F 500

Patent

active

050042149

ABSTRACT:
A device for adjusting the inclination of the backrest and/or seat of chairs, particularly office chairs, has a gas spring, a head member connectable to the gas spring, an L-shaped lever member pivotally connected to the head member and including a first arm, a second arm, and a rod acting on the first arm so as to cause rotation of the L-shaped member and consequent pushing action of the second arm on the driving shaft of the valve of the gas spring.

REFERENCES:
patent: 3790119 (1974-02-01), Bauer
patent: 3979109 (1976-09-01), Ishida
patent: 4108416 (1978-08-01), Nagase et al.
patent: 4415135 (1983-11-01), French
patent: 4662680 (1987-05-01), Dauphin
patent: 4756496 (1988-07-01), Hosan et al.

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