Pneumatic tire and method of making same

Claim 1

IN A METHOD OF MAKING PNEUMATIC TIRES WHEREIN A BAND HAVING CONTINUOUS BEADS AT EACH END THEREOF AND A PLURALITY OF PLIES OF STRETCHRESISTANT ELEMENTS CONNECTING SAID BEADS IS FORMED AND SAID BAND IS EXPANDED TO GENERALLY TOROIDAL SHAPE AND CURED IN A MOLD IN SAID TOROIDAL SHAPE, THE STEPS WHICH COMPRISE FORMING AROUND THE ENTIRE INNER PERIPHERY OF SAID BAND AND BETWEEN THE BEAD PORTIONS AN INNER LAYER OF CURED FLUID TIGHT, COMPOUNDED RUBBERY COPOLYMER OF ISOBUTYLENE AND A DIOLEFINIC COMPOUND, WHICH COPOLYMER CONTAINS LESS THAN 10% OF SAID DIOLEFINIC COMPOUND, SAID INNER LAYER UNDERLYING THE ENTIRE SURFACE OF THE INNER PLY OF SAID BAND AND BEING BONDED THERETO, EXPANDING SAID BAND TO A TOROIDAL FORM BY FORMING A CLOSED CHAMBER IN WHICH SAID CURED BAND IS AN OUTER CYLINDRICAL WALL AND INTRODUCING FLUID UNDER PRESSURE INTO SAID CHAMBER WHILE SIMULTANEOUSLY MOVING SAID BEADS TOWARD EACH OTHER, AND THEREAFTER CURING SAID TOROIDALLY SHAPED BAND WITH THE AID OF HEAT AND PRESSURE OF A FLUID INCORPORATED DIRECTLY INTO THE CAVITY THEREOF, WHEREBY NECESSITY OF USING ANNULAR SHAPED AIR BAGS IS ELIMINATED.