COMPOSITE PISTON FOR A MOTOR VEHICLE TRANSMISSION
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United States of America Patent
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N/A
Issued Date -
Nov 19, 2009
app pub date -
May 18, 2009
filing date -
May 19, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A composite piston (10) for a motor vehicle transmission comprises a support body (14) and at least one rotationally symmetric annular seal comprising an elastomer sealing lip (16, 17) interacting in a sealing manner with a component (11, 12) forming a cylindrical sliding surface (21, 23), wherein the composite piston (10) can be displaced translationally relative to the component (11, 12) forming the cylindrical sliding surface. The annular seal comprises an elastomer annular bead (20, 22) displaced axially relative to the sealing lip (16, 17), wherein the annular bead is arranged to have a distance d1, d2 from the sliding surface (21, 23) in the non-loaded state larger than or equal to zero.
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