Planetary gearset with multi-layer coated sun gear

Details Planetary gearset with multi-layer coated sun gear Planetary gearset with multi-layer coated sun gear

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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