Gas spring with means for impeding piston movement away from one

Details Gas spring with means for impeding piston movement away from one Gas spring with means for impeding piston movement away from one

1979-07-09

1982-04-06

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

188317, 267 6415, 267120, 267124, F16F 910

Patent

active

043232248

ABSTRACT:
A gas spring of the piston-and-cylinder type in which the two compartments of the cylinder cavity, separated by a piston assembly, are connected by a first passage. A valve arrangement on the piston assembly defines a second passage between the compartments and closes in response to movement of the piston assembly away from a terminal position in the cylinder while opening in response to movement of the piston assembly towards the terminal position. Releasable locking structure carried in part by the cylinder and in part by the piston assembly cooperates to close the first passage when the piston assembly approaches the terminal position, thereby to hold the piston assembly in such terminal position.

REFERENCES:
patent: 2920338 (1960-01-01), Falk
patent: 3150747 (1964-09-01), Bliven et al.
patent: 3625320 (1971-12-01), Doetsch et al.
patent: 3919509 (1975-11-01), Schnitzius
patent: 3963227 (1976-06-01), Molders
patent: 4113071 (1978-09-01), Muller et al.
patent: 4156523 (1979-05-01), Bauer

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