Radial engine

Claim 1

IN A RADIAL ENGINE HAVING A STATIONARY HOUSING DEFINING AN INTERNAL ANNULAR CHAMBER IN WHICH A ROTARY PISTON HOUSING IS RECEIVED, SAID PISTON HOUSING HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED CYLINDERS RECEIVING RADIALLY ACTING PISTONS THEREIN WITH OPEN AREAS FORMED IN SAID PISTON HOUSING BETWEEN SAID CYLINDERS, THE HEADS OF SAID PISTONS BEING EXPOSED ALONG AN INNER ANNULAR WALL OF SAID CHAMBER, POWER SHAFT MEANS EXTENDING AXIALLY THROUGH SAID STATIONARY HOUSING AND CONNECTED TO SAID PISTONS, DRIVE MEANS INTERCONNECTING SAID SHAFT MEANS WITH SAID PISTON HOUSING TO ROTATE THE SAME WITHIN SAID CHAMBER, AND A PLURALITY OF FUEL SUPPLY AN COMBUSTION GAS EXHAUST UNITS CARRIED BY SAID STATIONARY HOUSING IN SPACED RELATION ALONG SAID INNER ANNULAR WALL IN COMMUNICATION WITH SAID PISTON HOUSING, THE IMPROVEMENT COMPRISING SAID STATIONARY HOUSING INCLUDING A MAIN RING PORTIN WITH THE INNER SURFCE THEREOF DEFINING SAID ANNULAR WALL OF SAID CHAMBER, A PAIR OF OPPOSITE END PLATES SEALING OFF SAID CHAMBER AND THROUGH AT LEAST ONE OF WHICH SAID SHAFT MEANS EXTENDS, AT LEAST SAID END PLATES HAVING AS A PART THEREOF COOLANT CIRCULATING JACKETS WHICH AT LEAST RADIALLY OVERLIE SAID CYLINDERS AND OPEN AREAS OF SAID PISTON HOUSING, AND A LUBRICATING SYSTEM INCLUDING LUBRICANT SUPPLY MEANS FORMING A PART OF SAID SHAFT MEANS AND COMMUNICATING WITH SAID PISTON HOUSING TO LUBRICATE SAID PISTONS, LUBRICANT DISTRIBUTION MEANS IN SAID PISTON HOUSING TO DELIVER LUBRICANT TO SAID OPEN AREAS AND OUTER SURFACES THEROF IN HEAT TRANSFER RELATION WITH SAID JACKETS, AND LUBRICANT COLLECTION AND TAKE-OFF MEANS ALONG SAID RING PORTION FOR CENTRIFUGAL ACCUMULATION AND RETURN OF LUBRICANT THEREIN.