Composite shaft for rotary combustion engine

Claim 1

A ROTARY MECHANISM HAVING AN OUTER BODY INCLUDING A PLURALITY OF COAXIAL PERIPHERAL WALLS, AT LEAST ONE INTERMEDIATE WALL INTERCONNECTING TWO ADJACENT PERIPHERAL WALLS, AND A PAIR OF AXIALLY-SPACED END WALLS WITH ONE END WALL BEING CONNECTED TO EACH OUTER AXIAL END OF SAID ROTARY MECHANISM THEREBY FORMING A PLURALITY OF COAXIALLY-SPACED CAVITIES; A ROTOR DISPOSED IN EACH OF SAID CAVITIES WITH SAID ROTOR BEING ROTATABLE RELATIVE TO SAID OUTER BODY; A MULTIPART SHAFT COAXIALLY SUPPORTED IN SAID OUTER BODY FOR ROTATION RELATIVE THERETO, SAID MULTI-PART SHAFT INCLUDING A FIRST SHAFT PORTION EXTENDING AXIALLY THROUGH THE ENTIRE OUTER BODY AND HAVING AN ECCENTRIC PORTION INTEGRAL THEREWITH DISPOSED IN A FIRST OF SAID OUTER BODY CAVITIES AND HAVING A ROTOR ROTATABLY SUPPORTED THEREON AND IN DRIVING ENGAGEMENT WITH SAID ECCENTRIC PORTION; AT LEAST ONE OTHER SHAFT PORTION REMOVABLY MOUNTED WITH SAID FIRST SHAFT PORTION WITH SAID OTHER SHAFT PORTION HAVING AN ECCENTRIC PORTION INTEGRAL THEREWITH DISPOSED IN A SECOND OF SAID OUTER BODY CAVITIES AND HAVING A ROTOR ROTATABLY SUPPORTED THEREON IN DRIVING ENGAGEMENT WITH ITS SAID ECCENTRIC PORTION; COUPLING MEANS ON EACH OF THE SHAFT PORTIONS DISPOSED IN FRICTION ENGAGEMENT WITH THE COUPLING MEANS ON AN ADJACENT SHAFT PORTION FOR MAINTAINING SAID SHAFT PORTIONS IN TIGHT FRICTION RELATIONSHIP SUCH THAT UNIFORM ROTATIONAL MOVEMENT IS TRANSMITTED BY THE PORTIONS OF SAID MULTI-PART SHAFT.