Housing arrangement for a pressure plate assembly, pressure plate assembly for a friction clutch

A pressure plate assembly for a friction clutch, comprising

• a housing having a rotational axis, a radial outside area, and a pass-through opening for allowing a release mechanism to cooperate with a stored energy device,
• a pressure plate assembly mounted in said housing with freedom to move axially relative to said housing,
• at least one blocking element fixed to said radial outside area of said housing, said at least one blocking element introducing a corresponding at least one rotational imbalance on said housing,
• at least one clearance producing arrangement cooperating with said at least one blocking element on said housing to detect wear, and
• an imbalance compensating formation on said housing radially inside of said at least one blocking element the pass through opening being shaped to provide the imbalance compensation formation said formation at least substantially compensating for said at least one rotational imbalance,
• wherein a first assembly comprising said housing and said at least one blocking element is at least substantially free of imbalance, and a second assembly comprising said pressure plate and said clearance producing arrangement is substantially free of imbalance, said pressure plate being balanced to eliminate any residual imbalance after said first assembly and said second assembly have been attached.

A friction clutch comprising a pressure plate assembly, said pressure plate assembly comprising

• a housing having a rotational axis, a radial outside area, and a pass-through opening for allowing a release mechanism to cooperate with a stored energy device,
• a pressure plate assembly mounted in said housing with freedom to move axially relative to said housing,
• at least one blocking element fixed to said radial outside area of said housing, said
• at least one blocking element introducing a corresponding at least one rotational imbalance on said housing,
• at least one clearance producing arrangement cooperating with said at least one blocking element on said housing to detect wear, and
• an imbalance compensating formation on said housing radially inside of said at least one blocking element, the pass through opening being shaped to provide the imbalance compensation formation said formation at least substantially compensating for said at least one rotational imbalance.