Patent ID: 6659257
Filing Date: 2003-12-09
Classification: F16D,G05G

Abstract:
A torque transmission device comprising:an inside support member having a first contact surface portion positioned on an outer periphery of the inside support member; an outside support member having a second contact surface portion positioned on an inner periphery of the outside support member; a first holding portion in which a clearance between the first contact surface portion and the second contact surface portion is gradually decreased in one peripheral direction; a second holding portion in which a clearance between the first contact surface portion and the second contact surface portion is gradually decreased in the other peripheral direction; a pair of interposition members which is supported on the first holding portion and the second holding portion respectively; an elastic member positioned between the pair of interposition members for biasing each interposition member to a direction in which the each clearance of the first and the second holding portion is decreased; an operation member for moving one of the pair of interposition members to a direction in which the clearance of the first or the second holding portion is increased against a biasing force of the elastic member; wherein each interposition member comprises a third contact surface portion being in surface contact with the first contact surface portion and a fourth contact surface portion being in surface contact with the second contact surface portion.