Hydrostatic power transmission

Claim 1

A HYDROSTATIC TRANSMISSION COMPRISING A SUBSTANTIALLY T-SHAPED HOUSING HAVING A CROSSBAR PORTION, A PAIR OF REVERSIBLE OIL MOTORS HAVING ALIGNED OUTPUT SHAFTS MOUNTED SYMMETRICALLY IN OPPOSING RELATIONSHIP WITHIN THE CROSSBAR PORTION OF AID HOUSING, A VARIABLE DISPLACEMENT OIL PUMP HAVING AN INPUT SHAFT, INPUT AND DISCHARGE SIDES AND BEING MOUNTED IN A DEPENDING PORTION OF SAID HOUSING INTERMEDIATE TO AND PERPENDICULAR TO SAID OIL MOTORS, SAID OIL MOTORS BEING IN FLUID COMMUNICATION WITH SAID PUMP THROUGH AN OIL PASSAGE CONNECTING MEANS, SAID MEANS COMPRISING: A STATIONARY MANIFOLD, A MOTOR VALVE BLOCK SUPPORTING MANIFOLE INSERTED INTO SAID STATIONARY MANIFOLD, COLINEAR WITH THE AXIS OF SAID OIL MOTORS, A ROTATABLE VALVE BLOCK ROTATABLY MOUNTED INSIDE AND AT OPPOSING ENDS OF SAID SUPPORTING MANIFOLD, A PUMP STATIONARY VALVE BLOCK MANIFOLD DEFINING THEREIN A PASSAGE PERPENDICULARLY CROSSING THE STATIONARY MANIFOLD AND SAID SUPPORTING MANIFOLD COLINEAR WITH THE AXIS OF SAID INPUT SHAFT, A CENTRAL PASSAGE IN A STATIONARY VALVE BLOCK MANIFOLD AND IN COMMUNICATION WITH A CENTRAL PASSAGE IN A SUPPORTING MANIFOLD, SAID PASSAGE COMMUNICATING A DISCHARGE SIDE OF THE OIL MOTORS WITH SAID INTAKE SIDE OF THE OIL PUMP, AND A SPACE BEING FORMED BETWEEN A PORTION OF THE OUTER PERIPHERY OF AID MOTOR VALVE BLOCK SUPPORTING MANIFOLD AND THE INNER PERIPHERY OF SAID STATIONARY MANIFOLD, SAID SPACE COMMUNICATING A DISCHARGE SIDE OF THE OIL PUMP WITH AN INTAKE SIDE OF THE OIL MOTORS.