Clutch

A clutch comprising:

• an outer member formed on its inner periphery with a first cam surface;
• an inner member coaxially mounted in said outer member and formed on its outer periphery with a second cam surface;
• a cage interposed between said outer member and said inner member and thus between said first cam surface and said second cam surface and formed with a plurality of pockets;
• means for providing a clearance in the direction of rotation between said cage and one of said outer member and said inner member;
• a torque-setting elastic member mounted between said cage and one of said outer member and said inner member to hold said means for providing a clearance in a neutral position with said clearance left therebetween so as to be deformed until said clearance disappears when it is subjected to a torque larger than a predetermined torque;
• cam members mounted in said respective pockets formed in said cage and adapted to come into engagement with said first and second cam surfaces when said cage is turned with respect to said one of said two members by a predetermined angle;
• and
• elastic means for biasing said cam members in the circumferential direction of said cage.