Internal gear device with improved rotary valve
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United States of America Patent
Stats
-
Oct 13, 1987
Grant Date -
N/A
app pub date -
May 6, 1986
filing date -
May 6, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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