Hydraulic motors

Claim 1

A MOTOR COMPRISING A MAIN BODY PART DEFINING A SET OF SYMMETRICAL RADIAL CYLINDERS RADIATING FROM A COMMON CHAMBER IN SAID BODY PART; A SHAFT WITH ITS AXIS INTERSECTING ALL OF THE AXES OF THE CYLINDERS, SAID SHAFT COMPRISING AN ECCENTRIC MEMBER IN SAID CHAMBER, SAID BODY PART AND SAID SHAFT BEING ROTATABLE RELATIVE TO EACH OTHER; PISTONS IN ALL OF SAID CYLINDERS IN SIMULTANEOUS DRIVING CONNECTIONS WITH SAID ECCENTRIC MEMBER; A PORT AT THE OUTER END OF EACH CYLINDER; A DISTRIBUTOR VALVE; HYDRAULIC MEANS CONNECTING SID VALVE WITH SAID SHAFT; COUPLING FLUID PRESSURE INLET AND RETURN CONDUITS; A PAIR OF DIAMETRICALLY OPPOSED DISTRIBUTOR PORTS IN SAID VALVE AND WITH WHICH SAID CONDUITS ARE IN CONTINUO S COMMUNICATION; INDIVIDUAL PASSAGES CONNECTING SAID CYLINDER PORTS WITH SAID CONDUITS VIA SAID DISTRIBUTOR PORTS IN SAID VALVE; AXIALLY SPACED PERIPHERAL CHANNELS IN SAID VALVE, EQUALIZING PASSAGES IN SPACED VALVE CONTINUOUSLY CONNECTING SAID CHANNELS WITH SAID HYDRAULIC FLUID PRESSURE CONDUITS TO CREATE AT THE PERIPHERY OF SAID VALVE HYDRAULIC FLUID PRESSURE TO BALANCE THE FORCES DUE TO THE HYDRAULIC FLUID PRESSURE ACTING UPON SAID VALVE AT ITS PORTS AND CIRCUMFERENTIAL AGROOVES WHICH RECEIVE SEALING RINGS FORMED OF RESILIENT PLASTIC, THE CIRCUMFERENTIAL GROOVES BEING POSITIONED SO THAT THE RINGS OF DEFINE THE AXIAL LIMITS OF THE EFFECTIVE AREA OF THE VALVE MEMBER ON WHICH THE HYDRAULIC FORCES ACT.