Hydraulic master cylinder
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United States of America Patent
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Feb 10, 1998
Grant Date -
N/A
app pub date -
May 8, 1996
filing date -
Nov 10, 1993
priority date (Note) -
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Abstract
A hydraulic master cylinder having a cylinder body (1) with a piston (3) slidable therein. The piston carries a sealing assembly (20) to permit pressurization of a pressure chamber (6) and fluid recuperation upon retraction of the piston. The sealing assembly includes a first seal (23) of relatively hard material slidable against the internal cylinder wall and a relatively resilient second seal (25) arranged to act between the sealing surfaces of the piston and the first seal to provide a fluid tight pressure seal during pressurization of the chamber.
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