Hydropneumatic vehicle suspension strut

Details Hydropneumatic vehicle suspension strut Hydropneumatic vehicle suspension strut

1989-09-14

1992-07-07

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

188289, F16F 500, F16F 948

Patent

active

051276348

ABSTRACT:
A hydropneumatic suspension strut adapted to be connected between the chassis and a wheel of an automotive vehicle. The strut has a piston with a rod having an axial passage connected to a hydropneumatic accumulator, and slides in a cylinder. A hydraulic stop arrests the movement of the piston at the end of its inward or driving stroke. The hydraulic driving stop includes, fixed to the end of the cylinder, a pin for entering an axial opening in a moving valve contained in an interior recess of the piston in such a manner that there is progressive restriction of the flow of hydraulic fluid through the valve, to cushion and stop the piston.

REFERENCES:
patent: 3070363 (1962-12-01), Ellis
patent: 3147826 (1964-09-01), McHenry
patent: 3944197 (1976-03-01), Dashicourt
patent: 3945626 (1976-03-01), Tilkins
patent: 3991863 (1976-11-01), Lee
patent: 4050684 (1977-09-01), Sanders
patent: 4407397 (1983-10-01), Fukishima et al.
patent: 4796732 (1989-01-01), Kong
patent: 4834222 (1989-05-01), Kato et al.
patent: 4921224 (1990-05-01), Fukumura et al.

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