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Tire sidewall deformation detection techniques

  • US 4,440,018 A
  • Filed: 01/18/1982
  • Issued: 04/03/1984
  • Est. Priority Date: 01/18/1982
  • Status: Expired due to Term
First Claim
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1. In a tire manufacturing system including means for assembling and curing components of the tire and for testing the cured tire by detecting lateral runout values for at least one sidewall of the tire, improved apparatus for determining the degree of side wall deformation resulting from the assembling and curing, said apparatus comprising:

  • storage means for storing a plurality of the lateral runout values;

    processing means for segregating the lateral runout values into a plurality of groups, each group representing a portion of the sidewall, for calculating a reference value for each group based on at least a portion of the runout values within the group, for comparing the reference values to at least one of the laterial runout values in the group in order to generate a group deformation value indicative of the degree of deformation in the portion of the sidewall represented by the group, and for generating a deformation flag signal if any of the group deformation values generated for the various groups have a predetermined relationship with respect to a predetermined limit; and

    means for indicating the condition of the tire in response to the deformation flag signal.

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