Motor vehicles – Power – Electric
Reexamination Certificate
2004-11-30
2008-08-12
Restifo, Jeffrey J (Department: 3618)
Motor vehicles
Power
Electric
C180S065100, C180S375000, C475S150000
Reexamination Certificate
active
07410017
ABSTRACT:
An electric drive axle, which is located between and powers the left and right drive wheels of an automotive vehicle, includes an electric motor and left and right torque couplings. Torque developed by the motor transfers through the torque couplings to axle shafts which are connected to the drive wheels. Each torque coupling includes a magnetic particle clutch and a planetary set organized such that the current flowing through the electromagnet of the clutch controls the torque delivered through the coupler. The magnetic particle clutches also accommodate slippage so that the drive wheels may rotate at different angular velocities.
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International Preliminary Report on Patentability from Corresponding International Appln. No. PCT/US2005/043015; Date of mailing: Jun. 14, 2007—8 pages.
Polster, Lieder, Woodruff & Lucchesi, L. C.
Restifo Jeffrey J
The Timken Company
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