Raytech Composites, Inc.

Raybestos Products Company

Przemyslaw Zagrodzki

Wenping Zhao

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.

Alternative pack designs for multidisk clutches

A single sided friction assembly is provided in which an annular ring of friction material is provided on only one side of a relatively heat conductive metallic core plate, with the rings facing the same direction, and the ring of friction material engaging the rear bare metal side of an adjacent disk. An actuator is provided to bring the assembly into frictional engagement. Modifications are made at one and preferably both ends of the assembly to accommodate thermal deformations of the disks.

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West Lafayette, IN, United States of America

Przemyslaw Zagrodzki