Lubricating sealing structure for rotary mechanisms

Claim 1

A ROTARY-PISTON INTERNAL COMBUSTION ENGINE, COMPRISING IN COMBINATION AN OUTER BODY HAVING A PAIR OF END PLATES INTERCONNECTED BY A PERIPHERAL WALL TO FORM A CAVITY THEREIN HAVING A LONGITUDINAL AXIS, A MULTI-APEXED INNER BODY DISPOSED WITHIN SAID OUTER BODY FOR ROTATION RELATIVE THERETO, SAID INNER BODY BEING ROTATABLE ABOUT AN AXIS DISPLACED FROM SAID OUTER BODY AXIS BUT PARALLEL THERETO TO FORM BETWEEN SAID INNER AND OUTER BODIES A PLURALITY OF WORKING CHAMBERS WHICH VARY IN VOLUME UPON RELATIVE ROTATION BETWEEN SAID INNER AND OUTER BODIES, EACH APEX OF SAID INNER BODY HAVING A LONGITUDINALLY EXTENDING GROOVE, EACH OF SAID GROOVES HAVING DISPOSED THEREIN AT LEAST ONE LONGITUDINALLY EXTENDING SEAL STRIP SWEEPING THE INNER SURFACE OF SAID PERIPEHERAL WALL IN SEALING RELATION THERETO AND CAPABLE OF RECIPROCAL RADIAL MOTION, SAID INNER BODY HAVING AN INTERNAL LUBRICANT CAVITY AND LUBRICANT PASSAGE MEANS FROM SAID LUBRICANT CAVITY HAVING AN ORIFICE IN AT LEAST ONE WALL OF EACH OF SAID GROOVES FOR DELIVERY OF LUBRICANT THERETO, AND A DAM ELEMENT SEPARATE FROM ITS ASSOCIATED SEAL STRIP AND COVERING EACH OF SAID ORIFICES AND MOVABLE WITH SAID SEAL FOR DISTRIBUTION OF LUBRICANT FROM ITS ASSOCIATED ORIFICE AND OCCLUDING SAID ORIFICE AGAINST FREE LUBRICANT FLOW THERETHROUGH AND AGAINST BACK-PRESSURE FROM SAID WORKING CHAMBERS, REGARDLESS OF THE ASSOCIATED SEAL STRIP ORIENTATION.