Wheel assembly and method and apparatus for making same

Details Wheel assembly and method and apparatus for making same Wheel assembly and method and apparatus for making same

B - Operations, Transporting

60

B

26/190, 301/5

B60B 5/02 (2006.01)

Patent

CA 1259645

ABSTRACT A wheel assembly, and a method and apparatus for fabricating the same, are disclosed. The wheel as- sembly includes an annular bearing hub and an annular tread layer of thermoplastic elastomeric material, such as a copolyester polymer elastomer material, about the bearing hub. The tread layer has an initial free radial thickness. The material is such that upon being radially compressed at least thirty percent of its initial radial thickness the material will retain a substantial portion of the thickness reduction after being compressed. The method and apparatus include applying a radial force by means of a cone-shaped wedge member from within the tread layer while the outer periphery of the tread layer is radially contained, the radially applied force being sufficient to compress the tread layer at least thirty percent of its initial radial thickness. The bearing hub is moved axially into the compressed annular tread layer immediately behind the cone-shaped wedge member.

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