Longitudinally adjustable gas spring with dual layered cylinder

Details Longitudinally adjustable gas spring with dual layered cylinder Longitudinally adjustable gas spring with dual layered cylinder

1995-07-28

1997-04-15

Ballato, Josie

Brakes

Internal-resistance motion retarder

Cylinder structure

248631, A47C 330, F16F 902, C23C 826

Patent

active

056200676

ABSTRACT:
A longitudinally adjustable gas spring for adjustable-height chairs, tables or the like has an external cylinder, in which a piston is guided for displacement, to which a piston rod is secured, which is guided out of the exterior cylinder. The exterior cylinder has a thin hard external nitrided layer and a considerably softer core layer enclosing the inside wall of the exterior cylinder.

REFERENCES:
patent: 3656593 (1972-04-01), Bauer
patent: 3711054 (1973-01-01), Bauer
patent: 3717200 (1973-02-01), Pavilon
patent: 4899969 (1990-02-01), Bauer et al.
patent: 4934649 (1990-06-01), Stout et al.
patent: 4979718 (1990-12-01), Bauer et al.

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