Differential with thin film coating at cross shaft and...

Details Differential with thin film coating at cross shaft and... Differential with thin film coating at cross shaft and...

2007-11-27

2007-11-27

Le, David D. (Department: 3681)

Planetary gear transmission systems or components

Planetary gearing or element

C475S220000, C475S230000

Reexamination Certificate

active

10983551

ABSTRACT:
A process for improving the durability of a differential, where the differential has a pinion shaft and a pinion, the pinion shaft having a surface that contacts the surface of the inner diameter of the pinion. The process comprises bonding to the surface of the pinion shaft or the pinion or both, in the region of the interface between the pinion shaft and pinion, a coating having both a lower coefficient of friction and higher seizure resistance than that of the substance of the pinion shaft when in contact with the substance of the pinion.

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Japan Patent Bureau “Offocal Gazette” for Patent Application No. 55-8601 filed Jan. 28, 1980 entitled Differential pinion shaft, Aug. 31, 1981, 8 pages.

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