Radial seal for rotary mechanism

Claim 1

A ROTARY MECHANISM HAVING AN IMPROVED RADIAL SEAL COMPRISING AN OUTER BODY HAVING AXIALLY SPACED PARALLEL END WALLS, A PERIPHERAL WALL INTERCONNECTING THE END WALLS AND AN INNER BODY MOUNTED WITHIN THE OUTER BODY FOR ROTATION RELATIVE TO THE OUTER BODY, SAID INNER BODY HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED GROOVES EXTENDING OVER THE WHOLE AXIAL WIDTH OF THE INNER BODY, SEAL STRIPS MOUNTED IN SAID GROOVES AND EXTENDING BETWEEN THE END WALLS OF THE OUTER BODY AND MOVABLE IN A DIRECTION TOWARDS THE PERIPHERAL WALL OF THE OUTER BODY, AND A SHOE ARRANGED BETWEEN EACH SEAL STRIP AND THE PERIPHERAL WALL, SAID SHOE INCLUDING A HEAD PORTION AND A BODY PORTION WITH THE HEAD PORTION EXTENDING OVER THE WHOLE AXIAL LENGTH OF SAID SEAL STRIP AND HAVING A RADIALLY OUTER SURFACE FOR SLIDING ALONG THE PERIPHERAL WALL AND A RADIALLY INNER SURFACE FOR ENGAGEMENT WITH SAID SEAL STRIP THEREBY TO PROVIDE ADJACENT CHAMBERS ON OPPOSITE SIDES OF SAID SHOE, SAID CHAMBERS BEING SEALED FROM EACH OTHER BY THE ENGAGEMENT OF THE RADIALLY OUTER SURFACE OF THE HEAD PORTION OF SAID SHOE WITH THE PERIPHERAL WALL AND THE ENGAGEMENT OF THE RADIALLY INNER SURFACE OF THE HEAD PORTION OF THE SHOE WITH SAID SEAL STRIP, THE BODY PORTION OF THE SHOE BEING ANCHORED WITHIN THE INNER BODY FOR TILTING MOTION OF THE SHOE ABOUT AN AXIS PARALLEL TO THE ROTATIONAL AXIS OF THE INNER BODY, AND WITH THE RADIALLY OUTER SURFACE EXPOSED TO THE GAS PRESSURE OF THE ADJACENT WORKING CHAMBER, AND SAID BODY PORTION BEING FORMED TO PROVIDE A GAS PASSAGE BETWEEN THE RADIALLY INNER AND OUTER SURFACES THEREOF WHEREBY THE GAS PRESSURE ON THE TWO RADIAL SURFACES IS EQUALIZED.