192 clutches and power-stop control – Clutches – Operators
Reexamination Certificate
2007-02-27
2007-02-27
Rodriguez, Saul (Department: 3681)
192 clutches and power-stop control
Clutches
Operators
C060S545000, C091S433000, C192S090000
Reexamination Certificate
active
10931588
ABSTRACT:
A power transmission device includes a rotary input member receiving drive torque from a source of torque, a rotary output member for providing drive torque to an output device and a torque transfer mechanism for transferring drive torque between the input member and the output member. The torque transfer mechanism includes a friction clutch assembly operably disposed between the input member and the output member and a hydraulic clutch actuation system operable for applying a clutch engagement force to the friction clutch assembly. The hydraulic clutch actuation system includes an electric motor drivingly coupled to the hydraulic actuator. The hydraulic actuator includes a first piston biasedly engaged by a spring, slidably positioned within a housing and operable to supply pressurized fluid to a second piston. Supply of pressurized fluid to the second piston provides the clutch engagement force.
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Brissenden James S.
Ronk Aaron
Zalewski John D.
Harness & Dickey & Pierce P.L.C.
Magna Powertrain USA, Inc.
Rodriguez Saul
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