Gas spring adjustable in length for vertically adjustable chairs

Details Gas spring adjustable in length for vertically adjustable chairs Gas spring adjustable in length for vertically adjustable chairs

1987-11-18

1989-07-04

Ramirez, Ramon O.

Supports

Stand

Standard type

F16M 1300

Patent

active

048443921

ABSTRACT:
A gas spring adjustable in length has a housing and a piston rod brought out at one end. Disposed at the opposite end is a valve by means of which movements of longitudinal adjustment of the piston rod relative to a housing filled with a pressure medium are released or stopped. These gas springs are principally used for the vertical adjustment of chairs or tables. In order to make said vertical adjustment more comfortable, a damper valve is disposed in the valve effecting in different manner in each instance the throttling on the insertion of the piston rod into the housing or on the extraction of said piston rod out of the housing.

REFERENCES:
patent: 3656593 (1972-04-01), Bauer
patent: 3711054 (1973-01-01), Bauer
patent: 3913901 (1975-10-01), Molders
patent: 4245826 (1981-01-01), Wirges
patent: 4318536 (1982-03-01), Bauer
patent: 4325468 (1982-04-01), Siorek

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