Abstract: A friction torque transmitting mechanism has a plurality of reaction plates interleaved with a plurality of friction drive plates. The reaction plates are brought into frictional contact with the drive plates by a fluid operated piston, such that a transfer of torque can be conducted through the frictional engagement of the plates. The reaction plates have a reaction portion disposed in a slot in a housing. One of the reaction plates has an axially extending reaction tab positioned between the reaction portions of the remaining plates and the sidewall of the slot. The reaction forces on the reaction portions are transmitted to the sidewall through the reaction tab.

Abstract: A clutch disc for a motor vehicle clutch, the clutch disc having an idle suspension system and a load suspension system. The idle springs of the idle suspension system are located in the hub disc and are actuated by means of a control plate. The control plate includes axially bent control tabs which engage the idle springs of the idle suspension system, whereby the width of the idle springs can be approximately equal to the thickness of the hub disc.

Abstract: The present invention is directed to enhancing workability in attachment and detachment of a clutch release bearing from a clutch release mechanism. A release coupling device is provided on an outer circumference of a transmission input shaft extending toward a clutch for coupling a clutch release bearing and a bearing drive mechanism. The device includes an inner cover 19 and an inner cylinder 30. The inner cover 19 is provided in the outer circumference of the shaft so as to be fixed thereto close to a diaphragm spring and has first convex portions 19b in its inner circumferential surface. The inner cylinder 30 is inserted in the inner cover 19 and has second convex portions 30c in its outer circumferential surface so that they come in contact with the first convex portion s 19b in close proximity to the clutch.