Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1989-08-04
1991-11-05
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
F03C 208, F04C 210
Patent
active
050627767
ABSTRACT:
An improved commutator for a gerotor-type hydraulic pump or motor of the type having an orbiting outer or inner gear. Such pumps or motors require a commutator having a circular array of alternating inlet and outlet openings adjacent to a rotating valve plate which regulates flow to the gerotor gears. The commutator of the present invention has a chambers section and a fluid pathways section. The chambers section has a radially inner and a radially outer chamber disposed therein radially beneath the inlet port and outlet port of the pump or motor, also disposed in the chambers section. The radially outer chamber and radially inner chamber are each connected to one of the inlet and outlet ports. The pathways sections has the circular array of alternating inlet and outlet openings therein and includes fluid pathways which connect these inlet and outlet openings, respectively, to one of the radially inner and radially outer chambers of the chambers section.
REFERENCES:
patent: 3453966 (1969-07-01), Eddy
patent: 3512905 (1970-05-01), Waldorff
patent: 4380420 (1983-04-01), Wosthof et al.
patent: 4457677 (1984-07-01), Todd
patent: 4697997 (1987-10-01), White, Jr.
patent: 4877383 (1989-10-01), White, Jr.
Morgan Christopher H.
Parker Hannifin Corporation
Vrablik John J.
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