Abstract: The clutch mechanism comprises tangential tongues (16) which are fitted axially between the heads (21) of the posts (20) whereby a diaphragm (6) is pivotally mounted on a cover plate (7) and a pressure plate (5), the said tongues being fixed to the base (8) of the cover plate (7) with the aid of spacers (22, 23) which extend through a widened aperture (18) in the diaphragm (6).

Abstract: A cover plate for a diaphragm clutch mechanism including at its inner periphery fastening lugs (12) alternating with abutment lugs (22) having an overall transverse orientation for cooperation with the diaphragm. At least one stop lug (122) has a through notch which is particularly arranged to distinguish different cover plates having abutment lugs of different lengths.

Abstract: A clutch cover having balancing holes (31) for fixing a balancing device. At least one recess (32) is formed in the cover adjacent to one of the balancing holes (31) wherein the recess reduces the local thickness of the cover plate.

Abstract: The clutch mechanism has a cover (2), a thrust plate (1), elastic member with axial action (3) for acting on the thrust plate (1), circumferential tongues (5) attached at their ends by fixing devices (6, 8) each respectively to an area (53) on the cover (2) and to a lug (11) on the thrust plate (1), and at least one device (8) for limiting the axial travel of the thrust plate (1), which for this purpose passes through an opening (93) formed in a stop zone (91) on a limitation area (54) of the cover and having a continuous shoulder (81), larger in size than the opening (93), suitable for coming to bear against the stop zone (91). This zone (91) is delimited on the inside by a slot (9) affecting the connecting area (23) and partly extends radially below the limitation area (54), as well as the limitation device (8).

Abstract: A clutch mechanism comprising a cover plate having a base portion joined to a skirt portion, a pressure plate and a diaphragm. The cover plate has a first shoulder which extends toward the base portion, while the pressure plate has, at its outer periphery, a second shoulder extending away from the base portion. The second shoulder is axially closer to the base portion than the first shoulder. A resilient compensating element is fitted between and in engagement with the first and second shoulders, and biases the pressure plate towards the base portion of the cover plate in such a way as to oppose the increase in the force of the diaphragm that may arise in operation.