Temperature-responsive fluid clutch

Claim 1

A DRIVEN COUPLING COMPRISING; RELATIVELY ROTATABLE COUPLING MEMBERS INCLUDING A HOUSING AS A FIRST COUPLING MEMBER HAVING CHAMBER MEANS THEREIN AND A SECOND COUPLING MEMBER LOCATED IN SAID CHAMBER MEANS; ANNULAR RIDGE AND GROOVE ELEMENTS ON SAID COUPLING MEMBERS AND DISPOSED IN AN INTERENGAGED RELATION WITH AN INTERVENING SHEAR SPACE THEREBETWEEN; VISCOUS SHEAR FLUID IN SAID CHAMBER MEANS AND ADAPTED, WHEN SUPPLIED TO SAID SPACE, TO TRANSMIT TORQUE BETWEEN SAID COUPLING MEMBERS; ONE OF SAID COUPLING MEMBERS HAVING AN ANNULAR RACEWAY THEREIN ADAPTED TO CONTAIN A PORTION OF SAID FLUID; AND ROTATION VELOCITY RESPONSIVE FLUID FLOW PRODUCING MEANS ON THE OTHER COUPLING MEMBER FOR OPERATION IN SAID RACEWAY DURING RELATIVE ROTATION BETWEEN SAID COUPLING MEMBERS AND EFFECTIVE TO CAUSE FLUID TO BE SUPPLIED TO OR REMOVED FROM SAID SPACE FOR VARYING THE AMOUNT OF TORQUE BEING TRANSMITTED; SAID FLOW PRODUCING MEANS COMPRISING DEFLECTOR MEANS SHIFTABLE ON SIAD OTHER COUPLING MEMBER BETWEEN FLUID PICK-UP AND FLUID DISCHARGE POSITIONS IN SAID RACEWAY.