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Golf club head with a polymer insert

  • US 6,273,831 B1
  • Filed: 09/03/1999
  • Issued: 08/14/2001
  • Est. Priority Date: 09/03/1999
  • Status: Expired due to Term
First Claim
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1. A golf club bead comprising:

  • a club head body having a front face with a recess therein;

    an insert disposed within the recess, the insert occupying more than 80% of the face and comprising a thermoset polyurethane formed from reactants comprising para-phenylene diisocyanate terminated polyether prepolymer having a nitrogen-carbon-oxygen group content ranging from 5% to 8%, and a blend of a diols, the thermoset polyurethane having a Shore D hardness in the range of 42-55, and a Bayshore rebound in the range of 51-70.

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