B - Operations – Transporting – 60 – B
Patent
B - Operations, Transporting
60
B
152/157
B60B 21/04 (2006.01) B60B 21/02 (2006.01)
Patent
CA 1258420
ABSTRACT A heavy equipment tire rim is constructed almost entirely from stock shapes of metal. A base portion is a right cylinder with attachment points to attach the cylinder to the wheel of the equipment welded inside the cylinder at appropriate points. Flat radial annular disks are welded to the cylindrical base and support a steel cone having a cone angle of 15 degrees from the surface of the cylinder to support the tire bead. There are at least two disks for each cone to support the cone at its smallest diameter and at its largest diameter. If the size and weight of the equipment makes it appropriate additional intermediate disks may be used in one version of the wheel. In another version of the wheel bar stock is cut into lengths which span the diagonal between the base of the outermost annular disk where it meets the cylindrical base and the periphery of the smaller radial disk where it meets the smallest circumference of the cone. The bars are welded in place in a closely spaced annular series. Finally, the tire bead stop is welded to the outer circumference of the cone or to a cylindrical skirt extending the outer circumference of the cone. The stop is made of standard bar stock of a radius sufficient to properly retain a tire bead. The stock may be round, semi-round, or quarter-round. In each case the tire bead itself is retained by a arch which is a quarter of a circle. All of the stock used to construct the tire rim is stock steel shapes with the exception of the cone leading to great economies of manufacture and to the unobvious result that all of the parts are in compression rather than tension and the strength of the wheel rim is greatly increased over similar wheel rims known to the art.
493993
Perley-Robertson Hill & Mcdougall Llp
Woods Luther L.
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