Planetary gear transmission systems or components – Differential planetary gearing – Bevel gear differential
Reexamination Certificate
2006-04-27
2009-06-23
Le, David D. (Department: 3655)
Planetary gear transmission systems or components
Differential planetary gearing
Bevel gear differential
C475S249000, C192S048400, C192S048800, C192S049000, C192S083000, C192S083000
Reexamination Certificate
active
07549941
ABSTRACT:
A vehicle differential assembly is provided that includes a differential adapted to allow differing rotational speed between a pair of outputs. The differential includes a gear assembly connected to the outputs and one or more hydraulically-actuated clutches for selectively and variably coupling the outputs. A hydraulic pump is adapted to generate hydraulic fluid pressure for engagement of the hydraulically-actuated clutches. A variable-engagement clutch is operatively connected to the input and the hydraulic pump such that the input selectively drives the hydraulic pump during engagement of the clutch to provide hydraulic fluid pressure to the hydraulically-actuated clutches. A valve operatively connected to the hydraulic pump and the hydraulically-actuated clutches selectively and variably provides fluid pressure from the hydraulic pump to the hydraulically-actuated clutches.
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Dykema Gossett PLLC
Eaton Corporation
Le David D.
LandOfFree
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