Vane seal and bearing for rotary compressors

Claim 1

IN A ROTARY COMPRESSOR, A HOUSING HAVING AN INTERIOR CYLINDRICAL WALL AND PARALLEL SPACED END WALLS, AN ANNULAR ROTOR JOURNALLED WITHIN SAID HOUSING FOR ROTATION ABOUT AN AXIS ECCENTRIC OF THE AXIAL CENTER THEREOF, A PLURALITY OF VANES EXTENDING RADIALLY OF THE AXIAL CENTER OF SAID HOUSING AND MOUNTED FOR PIVOTAL MOVEMENT ABOUT SAID AXIS, VANE SEAL BEARINGS PIVOTALLY MOUNTED IN SAID ROTOR AND EACH HAVING A VANE GUIDE SLOT EXTENDING THERETHROUGH FORMING A GUDIE AND SEAL FOR AN ASSOSIATED VANE, SAID VANE SEAL BEARINGS EACH HAVING REDUCED DIAMETER OPPOSITE END PORTIONS PIVOTALLY MOUNTED IN SAID ROTOR AND EACH HAVING A RADIAL SLOT ON THE LEADING SIDE THEREOF OPENING TO SAID VANE GUIDE SLOT, SAID REDUCED DIAMETER END PORTIONS HAVING RECESSED PORTIONS EXTENDING DIAMETRICALLY ALONG THE ENDS THEREOF AND INWARDLY ALONG OPPOSITE SIDES THEREOF, ONE OF SAID RECESSED PORTIONS OPENING TO SAID RADIAL SLOT, A WEAR TAKE-UP BAR SLIDABLY MOUNTED IN SAID RADIAL SLOT AND U-SHAPED SPRINGS RECESSED WITHIN SAID RECESSED PORTIONS OF SAID REDUCED DIAMETER ENDS OF SAID VANE SEAL BEARINGS, AND HAVING ENGAGING END PORTIONS EXTENDING INTO SAID RADIAL SLOT AND HAVING BEARING ENGAGEMENT WITH OPPOSITE ENDS OF SAID WEAR TAKE-UP BAR FOR YEILDABLY BIASING SAID WEAR TAKE-UP BAR INTO SEALING ENGAGEMENT WITH SAID VANE.