Differential with thin film coating at cross shaft and processes for manufacturing the same
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United States of America Patent
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Nov 27, 2007
Grant Date -
Jun 16, 2005
app pub date -
Nov 8, 2004
filing date -
Nov 10, 2003
priority date (Note) -
In Force
status (Latency Note)
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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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