Compact vane pump with mixed suction and return flows
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United States of America Patent
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Sep 28, 2010
Grant Date -
Oct 18, 2007
app pub date -
Apr 10, 2007
filing date -
Apr 12, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vane pump can effectively utilize the total quantity of a working fluid delivered from a vane section. The pump can be used for fluid pressure operated equipment requiring a high flow rate, does not create torque loss due to a throttle valve, and can prevent the occurrence of cavitation caused by a shortage of suction. The vane pump pressurizes and delivers a working fluid through a vane section. A returning working fluid flowing through a return port is throttled and accelerated by a throttle valve, and a working fluid sent from a suction port is attracted by the accelerated returning working fluid so that the returning working fluid and the working fluid sent from a tank are sent into the vane section.
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