Abstract: A clutch pack arrangement including a plurality of discs having inner splines with each disc having a friction lining attached to a single side of the discs having inner splines; a plurality of discs having outer splines with each disc having a friction lining attached to a single side of the discs having outer splines, said discs having outer splines being space intermittent to said discs having inner splines, and all friction lings are located on the same relative side of the discs having inner and outer splines; and; a plurality of bare steel discs including at least one bare steel disc having an inner spline and at least one bare steel disc having an outer spline, said bare steel discs being located intermittently between said, disc have friction linings attached to one side thereof.

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.

Abstract: A torque transfer apparatus is disclosed. The apparatus includes a housing, a friction pack including at least one pair of interacting surfaces operable to transfer torque, a first Belleville spring contacting a first region of the plate and contacting a first region of the housing, and a second Belleville spring contacting a second region of the plate and contacting a second region of the housing. In one embodiment the springs comprise a unitary piece. In other embodiments the springs may face the same or opposite directions.

Abstract: A torque transfer apparatus including a torque transfer plate with reduced thermal stresses. The apparatus includes a housing and a pack including at least one pair of plates interacting to transfer torque. At least one of the plates includes a plurality of teeth with at least two slots to reduce thermal stresses.

Abstract: A method and apparatus for reducing wear in a piston actuated brake or clutch pack assist retraction of the piston by configuring the friction discs. Preferably, a core is shaped with waves that generate axial force during brake release.

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.

Abstract: 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.