Friction torque transmitting assembly.

摘要

A fluid operated friction torque transmitting assembly, such as a clutch or brake, has a first set of friction plates (24) connected with a housing (12), and a second set of friction plates (28) alternately spaced with the first set connected with an inner hub (14). One set of friction plates has a plurality of apertures (30) providing fluid communication between opposite sides thereof. During relative rotation between the first and second sets of friction plates, the apertures are effective to reduce viscous drag friction between adjacent friction surfaces of the first and second sets of friction plates. <IMAGE>