Abstract: A friction clutch assembly connects driving and driven shafts and has a pressure plate axially moveable between an engaged position transmitting torque from the driving shaft to the driven shaft and a disengaged position. A cover is mounted on the flywheel and a spring is mounted on the cover. The spring urges the pressure plate into the engaged position and compression of the spring allows for movement of the pressure plate to the disengaged position. At least one lever assembly includes a housing mounted on the cover and a lever pivotable in the housing to apply an axial force urging the pressure plate to the engaged position.

Abstract: A friction clutch assembly connects driving and driven shafts and has a pressure plate axially moveable between an engaged position transmitting torque from the driving shaft to the driven shaft and a disengaged position. The assembly includes at least one primary lever which pivots relative to the cover and is configured for contact with the pressure plate. This primary lever is spring-biased to pivot in one direction to apply a generally axial primary force urging the pressure plate toward its engaged position, and is adapted to pivot upon release of the spring bias to pivot in an opposite direction thereby to permit movement of said pressure plate to its disengaged position. The assembly also includes at least one centrifugal-assist lever operable on rotation of the cover to pivot relative to the cover to apply a generally axial secondary force to the primary lever to assist in urging the pressure plate to its engaged position.