Automatic transmission rotating clutch with no return spring

A clutch assembly for a transmission, the clutch assembly configured to selectively interconnect a first rotatable member with a second rotatable member by engagement of a clutch pack, the clutch assembly comprising:

• a compensator;
• a piston which is axially movable with respect to the compensator and configured to selectively abut and engage the clutch pack to interconnect the first and second rotatable members;
• a clutch housing enclosing the piston, compensator and clutch pack;
• a piston cavity formed between the housing and piston to receive fluid from a clutch apply feed orifice to actuate the piston, said piston cavity having an outer radius (Rop);
• and
• a compensator cavity formed between the compensator and piston to receive fluid from a compensator feed orifice, said compensator cavity having an outer radius (Roc) greater than said outer radius (Rop) of the piston cavity, so that fluid in the compensator cavity provides a greater centrifugal pressure force against the piston in a clutch release direction than fluid in the piston cavity provides against the piston in a clutch apply direction during rotation, thereby eliminating the need for a return spring in the compensator cavity.