Vane-type fluid clutch

Claim 1

A FLUID CLUTCH OF THE TYPE HAVINGA ROTOR WITH A PLURALITY OF SPACED APART VANE SLOTS EACH CONTAINING A VANE MOUNTED FOR SLIDING MOVEMENT WITHIN ITS RESPECTIVE SLOT, A CAM RING ASSEMBLY INCLUDING A CAM RING SURROUNDING SAID ROTAR AND INWARDLY EXTENDING PORTIONS AT THE ENDS OF THE ROTOR, SAID VANES HAVING SIDES WHICH ARE IN SEALING RELATION WITH THE SAID INWARDLY EXTENDING PORTIONS OF SAID CAM RING ASSEMBLY, ENLARGED CHAMBERS IN SAID ROTOR AND ONE IN COMMUNICATION WITH EACH OF SAID SLOTS, SAID VANES EACH HAVING A HEAD PORTION MOUNTED FOR MOVEMENT WITHIN AND EXPOSED TO ITS ASSOCIATED CHAMBER AND DIVIDING SAID CHAMBER INTO AN INNER SECTION AND AN OUTER SECTION, MEAN FOR SELECTIVELY SUPPLYING FLUID UNDER PRESSURE TO THE OUTER SECTION OF SAID CHAMBER TO DEVELOP A FORCE ON SAID HEAD PORTION ACTING TO MOVE SAID VANE IN A VANE RETRACTING DIRECTION OR FOR SUPPLYING FLUID UNDER PRESSURE TO SAID INNER SECTION TO DEVELOP A FORCE ON SAID HEAD PORTION ACTING TO MOVE SAID VANE IN A BLADE EXTENDING DIRECTION INTO SEALING RELATION WITH AID CAM RING, DISCHARGE PASSAGES IN SAID ROTOR FOR CONDUCTING FLUID MOVED BY THE CAM RING AND EXTENDED VANES OUT OF SAID CLUTCH, AND INLET PASSAGE MEANS FOR CONDUCTING FLUID INTO SAID CLUTCH FOR MOVEMENT BY SAID VANES, THE IMPROVEMENT COMPRISING AN EXTERNAL CLOSED CIRCUIT INCLUDING A COLLAR AND A REGULATOR VALVE FOR SAID FLUID AND IN FLUID COMMUNICATION WITH SAID DISCHARGE PASSAGES IN SAID ROTOR AND WITH SAID INLET PASSAGE MEANS, WHEREBY A PORTION OF FLUID IS CONTINUALLY PASSED THROUGH SAID EXTERNAL CIRCUIT FOR COOLING AND REGULATING THEREOF.