Piston for a hydraulic cylinder, in particular a clutch master cylinder for motor vehicles
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United States of America Patent
Stats
-
Jul 1, 2003
Grant Date -
Feb 21, 2002
app pub date -
Jun 8, 2001
filing date -
Jun 9, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piston for the variable delimitation of a pressure chamber in a housing of a hydraulic cylinder, in particular a clutch master cylinder for motor vehicles, has a main section on which a running surface is provided for a sealing element on the housing side. The sealing element seals a pressure chamber in an operating position of the piston. The piston also has an after-running device, which, in a normal position of the piston, connects the pressure chamber to an after-running area. The after-running device is made separately from the main section and is connected without play to the main section to form the piston. As a result, a piston that is easy to manufacture is created and which, with reference to the after-running device, has an improved functionality compared with prior art.
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