Seal construction for rotary mechanisms

Claim 1

A ROTOR FOR USE IN A ROTARY MECHANISM HAVING A CAVITY WITH SPACED END WALLS AND WITHIN WHICH SAID ROTOR IS RECEIVED FOR SEALING COOPERATION WITH SAID END WALLS; SAID ROTOR HAVING A PAIR OF END FACES AND A PERIPHERAL FACE WITH A PLURALITY OF CIRCUMFERENTIALLY-SPACED APEX PORTIONS; AND END-WALL-ENGAGING SEAL MEANS CARRIED BY AN END FACE OF SAID ROTOR ADJACENT TO THE ROTOR PERIPHERY, SAID ROTOR END FACE SEAL MEANS INCLUDING A PLURALITY OF PAIRS OF SEAL STRIPS, THERE BEING ONE PAIR OF SAID SEAL STRIPS EXTENDING BETWEEN EACH PAIR OF ADJACENT APEX PORTIONS OF THE ROTOR WITH EACH PAIR OF SAID SEAL STRIPS BEING RECEIVED IN SIDE-BY-SIDE RELATION WITHIN A COMMON GROOVE IN SAID ROTOR END FACE, EACH SAID GROOVE HAVING SIDE WALLS WHICH ARE OPPOSITELY INCLINED TO ITS ROTOR END FACE AND DIVERGE FROM EACH OTHER IN AN OUTWARD DIRECTION AND SPRING MEANS WITHIN EACH SAID GROOVE FOR URGING THE ASSOCIATED PAIR OF SEAL STRIPS APART IN OPPOSITE DIRECTIONS GENERALLY PARALLEL TO ITS ROTOR END FACE FOR SEALING ENGAGEMENT OF EACH SEAL STRIP WITH THE ADJACENT SIDE WALL OF SAID GROOVE AND ALSO FOR URGINGK SAID PAIR OF SEAL STRIPS IN A DIRECTION OUTWARDLY OF SAID GROOVE ALONG THE GROOVE SIDE WALL ENGAGED BY THE STRIP.