Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1987-10-02
1988-07-12
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
418186, F03C 208, F04C 210
Patent
active
047566760
ABSTRACT:
A rotary fluid pressure device of the type including a gerotor gear set (115) including a ring member (119) and a star (123). Adjacent to the gerotor set are endcap members (117) each having an end surface (141) in engagement with an adjacent end surface of the star. The disclosed invention relates to valve-in-star type valving whereby both the manifold valving action and the commutating valving action occur at the interfaces of the end surfaces of the star and endcap members. Specifically, fluid is communicated from the inlet port (137) in one endcap member through an annular fluid pressure chamber (143) into a manifold zone (157) defined by the star, then through a passage (165) into a fluid port (161). The fluid ports are in commutating fluid communication with a plurality of stationary valve passages (151) define by the endcap member, each of which is in communication with one of the gerotor volume chambers. Similar passages (151), ports (163), passages (167), manifold zone (159), and pressure chamber (147 ) communicate the gerotor volume chambers with the outlet port (139) in the other endcap member.
REFERENCES:
patent: 211769 (1879-01-01), Nash
patent: 2989951 (1961-06-01), Charlson
patent: 4411606 (1983-10-01), Miller
Eaton Corporation
Kasper L. J.
Vrablik John J.
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