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Molded polypropylene foam tire cores

  • US 5,073,444 A
  • Filed: 01/11/1990
  • Issued: 12/17/1991
  • Est. Priority Date: 01/11/1990
  • Status: Expired due to Fees
First Claim
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1. A tire core for use in a vehicle tire casing, said tire core consisting of:

  • at least (one) two arcuate segments, formed prior to insertion into said casing, of molded polypropylene foam beads fused together by steam and shrunk so that, when said segments are inserted in said casing, said segments will expand and be held in compression by said casing.

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