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Composite injection-blow molded wheel and method of fabrication

  • US 5,316,377 A
  • Filed: 04/29/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 04/29/1992
  • Status: Expired due to Term
First Claim
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1. A wheel comprising:

  • a) a molded plastic rim including an annular hub having a bore, an annular tread support having a bonding surface, and a plurality of spokes, which spokes couple said tread support to said hub, and further including a plurality of hollow cavities; and

    b) first and second annular tread pieces bonded to said tread support and spaced apart from one another to provide an annular gap at said boning surface and wherein a wear surface of each of said tread pieces tapers in a range of 2 to 10 degrees of declination toward the gap.

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