192 clutches and power-stop control – Clutches – Torque responsive
Reexamination Certificate
2007-05-17
2010-06-29
Bonck, Rodney H (Department: 3655)
192 clutches and power-stop control
Clutches
Torque responsive
C192S085630, C192S08200T, C701S067000
Reexamination Certificate
active
07743899
ABSTRACT:
A power transmission device includes a rotatable input member, a rotatable output member, a friction clutch to selectively transfer torque between the input member and the output member, an actuator providing an actuating force to the friction clutch and a controller. The actuator includes an electric motor having an output shaft drivingly coupled to a gerotor. The gerotor is operable to supply pressurized fluid to a piston acting on the friction clutch. The controller controls the actuator in response to a four-wheel lock request to provide one of a minimum output torque and an output torque greater than a vehicle requested torque to operate the friction clutch in a locked mode.
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American Axle & Manufacturing Inc.
Bonck Rodney H
Harness & Dickey & Pierce P.L.C.
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