Extended life gas spring

Details Extended life gas spring Extended life gas spring

1984-04-25

1987-03-03

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Cylinder structure

267 6428, F16F 943

Patent

active

046468846

ABSTRACT:
A pressurized gas spring having an extended useful operating life is provided. The cylinder is pressurized with a gas that exists in a gas-liquid phase equilibrium at the operating temperatures and pressures of the gas spring. The liquid within the cylinder promptly converts to the gaseous form upon any reduction in pressure within the cylinder. The equilibrium pressure between the liquid and gas phases assures constant cylinder pressure regardless of the gradual, normal leakage of gas from the cylinder, and the cylical changes in volume within the cylinder due to the reciprocating action of the piston rod during operation of the gas spring.

REFERENCES:
patent: 2774446 (1956-12-01), de Carbon
patent: 2823915 (1958-02-01), Bourcier De Carbon
patent: 2873963 (1959-02-01), Taylor
patent: 3047040 (1962-07-01), Gross
patent: 3750855 (1973-08-01), Peddinghaus
patent: 3879023 (1975-04-01), Pearce et al.
patent: 3904182 (1975-09-01), Allinquant et al.
patent: 4044866 (1977-08-01), Ishida

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