Hydraulic pump or motor

Details Hydraulic pump or motor Hydraulic pump or motor

1976-06-04

1978-02-28

Freeh, William L.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Cylinders parallel to rotation axis

F01B 1304

Patent

active

040759334

ABSTRACT:
A fluid pressure device comprising a pump or motor having a rotating internal assembly comprising linear pistons and cylinders operated through a "swash" plate to actuate the pistons to provide output pressure. The swash plate is mounted to the drive shaft through a universal connection and the cylinder and piston assemblies are coupled to their component parts through universal swiveling ball and socket connections. Special spring washers are provided for insuring a sliding seal between the internal cylinders and a valving plate, and the valve ports are designed for noise minimization.

REFERENCES:
patent: 1659374 (1928-02-01), Robson
patent: 2157692 (1939-05-01), Doe et al.
patent: 2371974 (1945-03-01), Neuland
patent: 3108543 (1963-10-01), Gregor
patent: 3149577 (1964-09-01), Gregor
patent: 3382813 (1968-05-01), Schauer
patent: 3585901 (1971-06-01), Moon, Jr.
patent: 3761202 (1973-09-01), Mitchell
patent: 3796137 (1974-03-01), Thoma

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