Actuator with an overflow chamber and means for returning the fluid from the overflow chamber during a reverse stroke
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United States of America Patent
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-
Aug 4, 1998
Grant Date -
N/A
app pub date -
Oct 17, 1996
filing date -
Jan 5, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An actuator, particularly for the operation of a vehicle clutch in which an annular piston (10) slides between cylinder walls (11, 12) to define an annular working chamber (20). A sealing means (15) seals the piston to the cylinder walls and an overflow chamber (26, 27) retains any fluid which leaks past the sealing means from the working chamber. A return means (28) is also provided for returning fluid from the overflow chamber when the piston is not undertaking a working stroke.
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