Patent ID: 6840364

Claim:
A power train, comprising: a prime mover having an output member rotatable about a predetermined axis; a driven unit having a rotary input member; and means for transmitting torque between said input and output members, including an engageable and disengageable friction clutch having a housing rotatable with said output member about said axis, a rotary clutch disc arranged to rotate with said input member, a pressure plate, and a clutch spring arranged to bias said pressure plate against said clutch disc in the engaged condition of said friction clutch; means for disengaging said friction clutch, including at least one cylinder and piston unit having at least one cylinder mounted on said housing so that it is axially fixed while being rotatable with reference to said housing, wherein said cylinder and piston unit is operable to disengage the friction clutch by exerting a pushing force on said clutch spring and thereby releasing said bias of the pressure plate against the clutch disc; and means for reversibly and separably coupling said at least one cylinder with said housing within confines of a clutch space so that only the friction clutch has to be maneuvered off of the rotary input member for separating the prime mover from the driven unit without requiring further disassembly to be performed on the driven unit.