Rotary piston and housing thereof

Claim 1

IN A ROTARY PISTON INTERNAL COMBUSTION ENGINE, THE COMBINATION COMPRISING AN ANNULAR CENTER CASING HAVING AN ELLIPTICALLY AND TROCHOIDALLY SHAPED INTERNAL PERIPHERAL WALL DEFINING THE PERIPHERY OF AN ELLIPTICALLY SHAPED WORKING CHAMBER, SIDE WALLS CLOSING THEOPPOSITE ENDS OF SAID ANNULAR CASING, EACH OF SAID SIDE WALLS HAVING A MAIN BEARING BORE OPENING THROUGH THE CENTER THEREOF, A CRANKSHAFT ROTATABLY MOUNTED IN SAID MAIN BEARING BORES, A TRIANGULAR ROTARY PISTON HAVING FLAT END FACES AT THE OPPOSITE ENDS OTHEROF AND ECCENTRICALLY, ROTATABLY MOUNTED ON AID CRANKSHAFT WITHIN SAID WORKING CHAMBER, SEALING MEMBERS FIXED ON THE OPPOSITE FLAT END FACES OF THE PISTON AND AT THE APEXES THEREOF FOR SEALINGLY ENGAGING SAID INTERNAL PERIPHERAL WALL AND SAID SIDE WALLS AND DEFINING WORKING CHAMBERS BETWEEN THE PISTON AND THE CASING AND SIDE WALLS DURING THE ROTATION OF THE PISTON, AND SAID SIDE WALLS EACH HAVING THE ENTIRE AREA THEREOF HAVING AT LEAST THE SURFACE OF REINFORCING MATERIAL, AND FURTHER HAVING PORTIONS THEREOF COATED WITH ADDITIONAL REINFORCING MATERIAL IN THE REGIONS WHERE THE PATHS OF SAID SEALING MEMBERS COME INTO CLOSE PROXIMITY WITH EACH OTHER, SO THAT SAID SEALING MEMBER CAN TRACE SAID CLOSE PATHS ON SAID SIDE WALLS, DURING THE ROTATION OF THE PISTON, WITHOUT UNEVEN WEAR THEREON.