Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1991-04-18
1992-08-11
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
251367, F01C 110, F03C 208, F16K 324, F16K 2704
Patent
active
051374382
ABSTRACT:
A multiple speed fluid motor includes a housing having an inlet port for receiving high pressure fluid and an exhaust port for exhausting low pressure fluid, and a gerotor gear set. An output shaft is supported for rotation relative to the housing. One of the gerotor gears is coupled with the output shaft for rotating the output shaft in response to fluid being supplied to the inlet port. The motor includes fluid passages for conducting fluid to the fluid displacement means. A control valve member is movable to control fluid flow through the fluid passages to control the rotational speed of the output shaft. The control valve member is mounted in a valve chamber defined by a plurality of plates.
REFERENCES:
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patent: 4480971 (1984-11-01), Swedberg
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patent: 4697997 (1987-10-01), White, Jr.
patent: 4715798 (1987-12-01), Bernstrom
Char-Lynn Brochure No. 10-107, Sep. 1989 "2000 Series Two Speed Motor".
Hydraulic & Pneumatics Magazine, Nov. 1990, pp. 8 and 10.
TRW Inc.
Vrablik John J.
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