Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wenping Zhao0
Przemyslaw Zagrodzki0
Date of Patent
January 22, 2008
0Patent Application Number
108755440
Date Filed
June 24, 2004
0Patent Primary Examiner
Patent abstract
A method and apparatus reduces hot spotting in transmission clutch packs actuated by a piston with axial fingers engaging the clutch pack. The method and apparatus combine an alternative pack arrangement with the fingered actuator, the alternative pack preferably being an inverted double sided pack or a single sided pack. The friction plates may have single or double side friction layers, but a second set of plates are splined for rotation with the shaft when the friction plates and the piston are splined for rotation with the housing in which the shaft rotates.
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