Ring valve pump

Details Ring valve pump Ring valve pump

1990-10-19

1991-10-22

Smith, Leonard S.

Motors: expansible chamber type

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

Control valve seating surface contact maintained by fluid...

91499, 417269, F01B 310

Patent

active

050584855

ABSTRACT:
An eccentric ring porting system for hydraulic pumps of the type having a rotating cylinder block. The rotating cylinder block has a flat annular port face with a small cluster of regularly spaced cylinder ports in the face circularly arrayed about the axis of rotation of the cylinder block. A ring valve element has a ring seat surface held flush against the cylinder port face. The axis of the ring seat surface is eccentrically offset from the axis of rotation of the cylinder block, and the cylinder ports are uncovered inside of the inner edge of the ring seat surface for output porting of the pump and outside of the outer edge of the ring seat surface for inlet porting of the pump.

REFERENCES:
patent: 2969810 (1961-01-01), Dudley
patent: 3046950 (1962-07-01), Smith
patent: 3055305 (1962-09-01), Bostwick
patent: 3056357 (1962-10-01), Bohnhoff
patent: 3194172 (1965-07-01), Schottler
patent: 3752053 (1973-08-01), Wouters
patent: 4051765 (1977-10-01), Saito

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