Sealing structure

Claim 1

A RADIAL SEAL FOR ROTARY-PISTON INTERNAL COMBUSTION ENGINES OF TROCHOIDAL CONSTRUCTION WHICH HAVE AN ENCLOSURE BODY PROVIDED WITH INTERNAL SURFACES ALONG WHICH ROTATES A PISTON, COMPRISING: GROOVE MEANS PROVIDED WITHIN THE PISTON AND EXTENDING SUSBTANTIALLY PARALLELLY TO THE AXIS OF THE ENGINE, SEALING BAR MEANS WITHIN SAID GROOVE MEANS, MEANS NORMALLY URGING SAID SEALING BAR MEANS RADIALLY OUTWARDLY AGAINST THE INNER SURFACES OF THE ENCLOSURE BODY, AND ROLLER BEARING MEANS FOR SUPPORTING SAID SEALING BAR MEANS WITHIN SAID GROOVE MEANS, SAID ROLLER BEARING MEANS INCLUDING A PLURALITY OF ROLLER MEMBERS SUPPORTED WITHIN GROOVES EXTENDING SUBSTANTIALLY PARALLELY TO THE AXIS OF THE PISTON WITHIN THE SIDE WALLS OF SAID SEALING BAR MEANS, ONE OF SAID SIDE WALLS BEING PROVIDED WITH A FIRST ONE OF SAID GROOVES IN A LOWER REGION THEREOF AND WITH A SECOND ONE OF SAID GROOVES IN THE UPPER REGION THEREOF, AND THE OTHER SIDE WALL BEING PROVIDED WITH A THIRD ONE OF SAID GROOVES IN THE CENTER REGION THEREOF DIRECTLY ADJACENT AND BETWEEN SAID FIRST AND SECOND GROOVES FOR ACCOMMODATING THEREIN SAID ROLLER MEMBERS, EACH OF SAID GROOVES LYING AT SUBSTANTIALLY DIFFERENT DISTANCES FROM THE RADIALLY INNER EDGE OF SAID SEALING BAR MEANS.