Hydraulic torque motors

Claim 1

A HYDRAULIC TORQUE MOTOT INCLUDING, A ROTOR HOUSING DEFINING A ROTOR CHAMBER, A SHAFT SUPPORTED BY SAID HOUSING AND ROTATABLE WITH RESPECT THERETO, A ROTOR WITHIN SAID HOUSING AND HAVING A SERIES OF ANGULAR SPACED INTERNAL LOBES, AN EXTERNALLY LOBED MEMBER WITHIN SAID ROTOR AND SECURED IN COAXIAL RELATION TO SAID SHAFT AND HELD FROM ROTATION RELATIVE TO SAID HOUSING, SAID ROTOR HAVING A GREATER NUMBER OF LOBES THAN SAID EXTERNALLY LOBED MEMBER AND IN MESH THEREWITH TO TRAVEL IN AN ORBITAL PATH ABOUT THE AXIS OF THE SHAFT, MEANS FOR CLOSING THE AXIAL END OF THE SPACES BETWEEN THE LOBES OF THE ROTOR AND THOSE OF THE EXTERNALLY LOBED MEMBER, ONE OF SAID CLOSING MEANS INCLUDING ANGULARLY SPACED INLET PORTS ON ONE SIDE OF EACH LOBE OF SAID EXTERNALLY LOBED MEMBER AND OUTLET PORTS ON THE OPPOSITE SIDE THEREOF WHEEREBY FLUID PRESSURE MAY ENTER THE SPACES BETWEEN CERTAIN OF SAID LOBES TO CAUSE ROTATION OF SAID ROTOR ABOUT ITS ORBITAL PATH, AND MAY LEAVE THE SPACES BETWEEN OTHERS OF SAID LOBES TO PERMIT ROTATION OF SAID ROTOR, AND MEANS TRANSMITTING ROTATIVE MOVEMENT OF SAID ROTOR ABOUT THE AXIS OF SAID SHAFT TO SAID SHAFT TO ROTATE THE SAME.