B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/95.2
B60C 15/02 (2006.01) B60C 15/04 (2006.01)
Patent
CA 1075137
TIRE CORE BEAD FOR TUBELESS TIRES Abstract of the Disclosure A tubeless tire for a vehicle of the type adapted to be mounted on a one-piece undetachable rim of the drop-center type is provided. The tire is suitable for use with a rim having its bead-seats for the tire beads shaped like a truncated cone with the vertex axially turned towards the inside of the rim. The tire has beads having bead bases which are substantially frustrum shaped for combining with the bead-seat of the rim. The angle of inclination of the beads is approximately the same as that of the bead seat. The tire beads are provided with reinforcing metallic wire cores which comprise a plurality of metallic turns closely wound together so as to constitute substantially a massive annular element that is circumferentially inextensible and has a cross-section of a polygonal shape. The core base is the radially innermost side of the polygon with respect to the tire. The element has an "undercut" which is the side of the polygon that has one end in common with the axially internal end of the core base, the dihedral angle defined by the core base with the "undercut" being between 90° and 160°. The polygon is an irregular polygon and the wire core is disposed in the bead of the tire with the axially innermost extremity of the undercut passing through a plane perpendicular to the axis of rotation of the tire, and passing through the axially innermost extremity of the bead-base.
292886
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