HYDROSTATIC ACTUATOR WITH A SPLIT DYNAMIC SEAL PORTION
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United States of America Patent
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Issued Date -
Jul 25, 2019
app pub date -
Oct 5, 2017
filing date -
Oct 5, 2017
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Abstract
A hydrostatic actuator for a motor vehicle includes a housing, a piston, and a seal. The piston has a lateral surface and is arranged within the housing in a longitudinally movable manner. The seal is inserted between the lateral surface and the housing in a fluid-tight manner. The seal has a securing region that rests in a statically sealing manner against a one of the housing or the piston, and a sealing lip region. The sealing lip region includes a first sealing lip for dynamically sealing to the other one of the housing or the piston when pressure in an external space is greater than pressure in an internal space, and a second sealing lip for dynamically sealing to the other one of the housing or the piston when pressure in an external space is less than pressure in an internal space.
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