Abstract: An electromagnetic brake for an input shaft of a vehicle transmission is disclosed. The brake includes an armature separated from an electromagnetic coil pole face by a controlled air gap. A spring release feature ensures precise armature disengagement when the brake is deactivated. A wear compensation feature maintains uniformity of the air gap.

Abstract: A centrifugal clutch assembly is provided that includes a cover module having a pressure plate for applying a clamping force against a friction plate, a moveable plate adapted to rotate with the cover module, but axially displaceable with respect thereto to apply an axial force on the pressure plate through a preloaded plate spring, a fixed plate secured for rotation with the cover module, and a plurality of weights positioned between the moveable plate and the fixed plate that are adapted to move outward under the effects of centrifugal force to cause axial movement in the movable plate and a clamping force on the friction plate. The cover module also includes at least one return spring configured to apply a return force on the weights through the moveable plate, the return force being generally parallel to the axis of rotation of the cover module and independent of weight position.

Abstract: A frictional clutch for a motor vehicle includes a cover, a pressure plate, a biasing member, an adjustment mechanism and a dust shield assembly. The cover has an axis of rotation. The pressure plate is coupled to the cover for rotation therewith about the axis. The pressure plate has a frictional engagement surface substantially normal to the axis. The biasing member is interposed between the cover the pressure plate, and biases the pressure plate toward an engaged pressure plate position. The adjustment mechanism is centered about the axis and is located at a first radial distance from the axis. The adjustment mechanism is operably disposed between the biasing member and one of the pressure plate and the cover. The dust shield assembly includes an annular wall disposed radially within the adjustment mechanism. The annular dust shield assembly is in axial alignment with the adjustment mechanism.