Internal gear device with improved rotary valve

Details Internal gear device with improved rotary valve Internal gear device with improved rotary valve

1986-05-06

1987-10-13

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418 75, 418 77, 13762521, F03C 208, F04C 2113, F04C 1500

Patent

active

046995773

ABSTRACT:
A gerotor device wherein a body (10) includes high pressure ports (20) that communicate with an inlet (12) and low pressure ports (22) that communicate with an outlet (14). An inner member (42) and an outer member (40) cooperate to define pressure chambers (52) that increase and decrease in volume as the member (42) orbits and rotates. A rotary valve (62) selectively connects pressure chambers (52) to pressure ports (20) and (22) to convert between mechanical torque and fluid pressure. Cavities (75) and (77) are provided adjacent rotary valve (62) to hydraulically balance the valve.

REFERENCES:
patent: 3572983 (1971-03-01), McDermott
patent: 4281684 (1981-08-01), Broeg
patent: 4411607 (1983-10-01), Wusthof et al.
patent: 4545748 (1985-10-01), Middlekauff

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