Electrically commutated fluid motor

Claim 1

AN ELECTRICALLY COMMUNTATED FLUID MOTOR COMPRISING A CRANKSHAFT, TWO DOUBLE-ACTING HYDRAULIC CYLINDER EACH CONTAINING A RECIPROCATING PISTON, SAID TWO CYLINDERS BEING SPACED NINETY DEGREES FROM EACH OTHER RELATIVE TO SAID CRANKSHAFT TO CONTINUOUSLY ROTATE SAID CRANKSHAFT IN ONE DIRECTION IN SPITE OF THE REPEATED DIRECTION REVERSAL OF THE MOTION OF SAID RECIPROCATING PISTONS, CONNECTING RODS CONNECTING SAID PISTONS TO SAID CRANKSHAFT, ROTARY FLUID JOINTS ATTACHED TO SAID CYLINDERS FOR INTRODUCING AND EXTRACTING HYDRAULIC FLUID, EACH CYLINDER BEING PIVOTED UPON SAID JOINTS FOR OSCILLATION AS THE CRANKSHAFT ROTATES, TWO ELECTRICALLY CONTROLLED VALVES CONNECTED IN FLUID-CONTROLLING RELATION TO THE ROTARY JOINTS OF THE TWO CYLINDERS, MEANS FOR SUPPLYING TO ONE OF SAID VALVES AN ELECTRIC SIGNAL PROPORTIONAL TO THE SINE OF THE ANGULAR POSITION OF SAID CRANKSHAFT, AND MEANS FOR SUPPLYING TO THE OTHER OF SAID VALVES AN ELECTRIC SIGNAL PROPORTIONAL TO THE COSINE OF THE ANGULAR POSITION OF SAID CRANKSHAFT SO THAT SAID RECIPROCATING PISTONS CONTINUOUSLY ROTATE SAID CRANKSHAFT IN THE DIRECTION DETERMINED BY SAID QUADRATURE PHASE RELATION.