Planetary gear transmission systems or components – With lubricaton
Reexamination Certificate
2005-01-25
2005-01-25
Lewis, Tisha (Department: 3681)
Planetary gear transmission systems or components
With lubricaton
C475S344000, C475S901000, C029S893100
Reexamination Certificate
active
06846261
ABSTRACT:
A planetary gearset includes a sun gear member having a sun gear body made of a steel material and an outer periphery with a plurality of teeth formed thereon. Each of the sun gear teeth has at least one mating surface for engaging mating surfaces on complementary teeth on at least one planet gear. A fatigue-resistant coating is applied to the mating surfaces of the sun gear teeth. The coating is harder and more abrasive than the mating surfaces of the planet gear teeth.
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Anderson Neil E
Cheng Yang-Tse
Lev Leonid Charles
Paluch Robert F.
Weiner Anita Miriam
General Motors Corporation
Lewis Tisha
Marra Kathryn A.
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