Hydraulic linear drive, particularly a hydraulic transmission actuator
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United States of America Patent
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Apr 14, 2009
Grant Date -
Sep 13, 2007
app pub date -
Mar 17, 2005
filing date -
May 7, 2004
priority date (Note) -
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Abstract
A hydraulic linear drive, particularly a hydraulic transmission actuator, having a piston/cylinder unit, in which an actuating piston longitudinally displaceably arranged in the cylinder housing divided into at least two pressure chambers which can be acted upon by hydraulic oil by way of control conduits. A piston rod is connected with the actuating piston, and a sealing element is arranged on the actuating piston to seal off the two pressure chambers from one another. The actuating piston has a two-piece construction and consists of a first and a second piston part between whose facing faces, a sealing element is arranged.
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