Rotary internal combustion engine

Claim 1

A ROTARY INTERNAL COMBUSTION ENGINE, COMPRISING IN COMBINATION AN OUTER BODY HAVING A PERIPHERAL WALL WITH A BASICALLY EPITROCHOIDAL MULTIOBED INNER SURFACE AND A PAIR OF PARALLEL END WALLS SPACAED APART BY SAID PERIPHERAL WALL ALONG THE LONGITUDINAL AXIS THEREOF; SAID PERIPHERAL WALL HAVING LOBE JUNCTIONS IN A ZONE CLOSER TO SAID LONGITUDINAL AXIS THAN THE REMAINDER OF SAID WALL; A DRIVE SHAFT TRANSPIERCING SAID END WALLS AND HAVING AN ECCENTRIC PORTION DISPOSED WITHIN SAID OUTER BODY, SAID ECCENTRIC PORTION HAVING AN AXIS DISPLACED FROM AND PARALLEL TO SAID OUTER BODY AXIS AND PLANETATING THEREAROUND; A MULTIAPEXED INNER BODY DISPOSED WITHIN SAID OUTER BODY AND MOUNTED ON SAID ECCENTRIC PORTION FOR ROTATION ABOUT SAID ECCENTRIC AXIS WITH SAID APEXES SWEEPING SAID INNER SURFACE IN SEALING RELATION THERETO; SAID INNER BODY HAVING AT EACH END THEREOF AND END FACE BEARING END FACE SEALS DISPOSED ADJACENT TO THE EDGES OF SAID END FACE AND GENERALLY PARALLEL THERETO, SAID END FACE SEALS SWEEPING THE INNER SURFACE OF SAID END WALLS IN SEALING RELATION THERETO; EACH OF SAID END WALLS HAVING ITS INNER SURFACE FACED WITH A HARD WEAR-RESISTANT METAL IN THE REGION OF AT LEAST ONE OF SAID LOBE JUNCTIONS AND THE REMAINDER OF THE INNER SURFACE FACED WITH A LESS WEAR-RESISTANT METAL.