Planetary gear transmission systems or components – Differential planetary gearing – Bevel gear differential
Reexamination Certificate
2008-04-15
2008-04-15
Le, David D. (Department: 3681)
Planetary gear transmission systems or components
Differential planetary gearing
Bevel gear differential
C475S150000, C192S03000R, C192S084600, C192S09300C, C192S11000B
Reexamination Certificate
active
07357748
ABSTRACT:
A limited slip differential comprises a housing having an input, a first output, and a second output rotatably mounted in the housing. A friction clutch in the housing limits slip between the first output and the second output, and a mechanism in the housing applies an axial force to the friction clutch. The mechanism includes a rotatable actuating plate and a non-rotatable, back-up plate. A motor that rotates the actuating plate is controlled by an electronic motor control which has a feed back that is responsive to the force applied by the mechanism to the friction clutch. In one embodiment, the feed back measures the angular position of the rotatable actuating plate which is mounted on an angular contact bearing. The stain or slight axial movement of the outer race of the angular contact bearing is measured to provide the feed back to the electronic motor control.
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Borg-Warner Inc.
Le David D.
Reising Ethington Barnes Kisselle P.C.
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