Planetary gear transmission systems or components – Electric or magnetic drive or control – Differential drive or control
Reexamination Certificate
2007-02-13
2007-02-13
Lorence, Richard M. (Department: 3681)
Planetary gear transmission systems or components
Electric or magnetic drive or control
Differential drive or control
C475S204000, C475S225000
Reexamination Certificate
active
10999859
ABSTRACT:
A torque transfer mechanism is provided for controlling the magnitude of a clutch engagement force exerted on a multi-plate clutch assembly that is operably disposed between a first rotary and a second rotary member. The torque transfer mechanism includes a clutch actuator assembly for generating and applying a clutch engagement force on the clutch assembly. The clutch actuator assembly includes an electric motor/brake unit and a torque/force conversion mechanism. The motor/brake unit can be operated in either of a motor mode or a brake mode to cause bi-directional linear movement of an output member of the torque/force conversion mechanism. The thrust force generated by the torque/force conversion mechanism is applied to the clutch assembly. The dual mode feature of the electric motor/brake unit significantly reduces the power requirements. A torque vectoring drive axle is equipped with a pair of such torque transfer mechanisms.
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Bowen Thomas C.
Kirkwood Malcolm E.
Harness & Dickey & Pierce P.L.C.
Lorence Richard M.
Magna Powertrain USA, Inc.
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