Fluid clutch with retractable vanes

Claim 1

AN HYDRAULIC COUPLING COMPRISING IN COMBINATION; A ROTOR, SAID ROTOR HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED APART RADIALLY MOVABLE VANES DISPOSED ON THE PERIPHERY THEREOF, SAID VANES BEING NORMALLY BIASED TO A RETRACTED POSITION WITHIN SAID ROTOR AND MOVABLE TO A RADIALLY EXTENDED POSITION UPON ROTATIONAL SPEED OF SAID ROTOR ABOVE A PREDETERMINED VALUE, A CASING SURROUNDING SAID ROTOR, SAID CASING HAVING AN ENDWALL ADJACENT ONE FACE OF SAID ROTOR AND A SIDEWALL SPACED-RADIALLY FROM THE OUTWARD EDGE OF SAID ROTOR TO DEFINE A FLUID REACTION CHAMBER INTERMEDIATE THE OUTWARD EDGE OF SAID ROTOR AND THE SIDEWALL OF THE SAID CASING, A WALL MEMBER POSITIONED ADJACENT THE OTHER FACE OF SAID ROTOR, DIVIDER MEANS AFFIXED TO SAID CASING AND PROJECTING RADIALLY INWARDLY FROM SAID SIDEWALL AND HAVING AN INWARD EDGE POSITIONED IN SEALING RELATIONSHIP WITH THE PERIPHERAL SURFACE OF SAID ROTOR, RAMP MEANS RIGIDLY CONNECTED TO SAID CASING ADJACENT SAID DIVIDER FOR DIRECTING EACH OF SAID VANES RADIALLY INWARD TO ALLOW SAID VANES TO SLIDE OVER SAID DIVIDER WHEN SAID ROTOR IS OPERATIVE ABOVE A PREDETERMINED SPEED, SAID VANES BEING ADAPTED TO IMPART MOTION TO A FLUID WITHIN SAID CHAMBER.