Hydropneumatic spring

Details Hydropneumatic spring Hydropneumatic spring

1981-01-07

1985-10-01

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

188315, 188317, 18832217, 267120, F16F 500, F16F 906

Patent

active

045441448

ABSTRACT:
A gas spring in which the piston rod is connected to a piston with a through-hole bored therethrough which is disposed in the cylinder filled with high pressure gas and oil and the spring action is effected by axial movement of the piston rod, characterized in that, when the piston rod is fully pushed into the cylinder, the oil reservoir formed within the cylinder is closed, yielding an ample sealing effect; and when the piston rod is fully pulled out of the cylinder, the high pressure gas can be filled along the piston rod into the cylinder without being hindered by the oil in the cylinder.

REFERENCES:
patent: 2248865 (1941-07-01), Griepenstroh
patent: 2564790 (1951-08-01), Orloff et al.
patent: 2649938 (1953-08-01), Crabtree
patent: 2939696 (1960-06-01), Tuczek
patent: 3147966 (1964-09-01), Axthammer et al.
patent: 3316558 (1967-05-01), Mortensen
patent: 3963227 (1976-06-01), Molders
patent: 4044866 (1977-08-01), Ishida
patent: 4098302 (1978-07-01), Freitag
patent: 4106596 (1978-08-01), Hausmann
patent: 4114866 (1978-09-01), Kato
patent: 4131139 (1978-12-01), Tanabe

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