Gas spring

Details Gas spring Gas spring

1996-12-05

1998-10-20

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

18832217, 267 6415, F16F 500

Patent

active

058235124

ABSTRACT:
There is provided a gas spring 20 in which: a cylinder groove 29 is formed on an inner surface of a cylinder 21 with a piston 23 therein, the piston 23 being fixed at one end of a rod 22 and the cylinder groove 29 extending in an axial direction of the cylinder throughout the range of piston stroke except an area near a stopper 30; and an airlock chamber is definable nearby the stopper of the cylinder so that damping operation can be performed when being fully extended at the end of the extending phases, the piston being formed of a porous material to communicate air between chambers provided at both sides of the piston.

REFERENCES:
patent: 4066279 (1978-01-01), Kaptanis
patent: 4161241 (1979-07-01), Larson
patent: 4166522 (1979-09-01), Bourcier De Carbon
patent: 4595182 (1986-06-01), Freitag et al.
patent: 4909488 (1990-03-01), Seibert et al.
Japanese Unexamined Patent Publication No. 53-1764.
Japanese Unexamined Patent Publication No. 54-112439.
Japanese Unexamined Utility Model Publication No. 3-75327.

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