Spring devices – Vehicle – Comprising compressible fluid
Patent
1976-11-01
1979-05-08
Halvosa, George E. A.
Spring devices
Vehicle
Comprising compressible fluid
188314, F16F 934
Patent
active
041532376
ABSTRACT:
A hydrapneumatic suspension unit for a vehicle has a first and and a second chamber separated by valve assembly in communication with both chambers for controlling the flow of liquid therebetween. The first said chamber is liquid filled and includes a slidably mounted piston connected by a linkage to the road wheel. The second chamber includes a first compartment containing the liquid and a second compartment containing a compressible medium, wherein the first and second compartments are separated by a floating piston or a diaphragm member to permit compression and restoration of the compressible medium. The valve assembly includes a damping valve, a low-restriction check valve for permitting one-way flow of liquid from the first to the second chamber, and a damping bypass valve for enabling quick return of liquid from the second chamber to the first chamber. Interconnection may be provided to establish equalization between two or more suspension units.
REFERENCES:
patent: 1807422 (1931-05-01), Manzel
patent: 1967169 (1934-07-01), Armstrong
patent: 2342381 (1944-02-01), Thornhill
patent: 3062330 (1962-11-01), Lyon, Jr.
patent: 3419114 (1968-12-01), Rumsey
patent: 3817566 (1974-06-01), Keijzer et al.
Halvosa George E. A.
Olson Oliver D.
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