Low hardness, resilient golf putter insert
First Claim
1. A golf club having a toe and an opposite heel, a sole portion and an opposite top portion, a forwardly facing exposed strike face, an opposite rearwardly facing exposed back face portion, a hosel, and a shaft, comprising:
- a recess defined in the strike face, said recess having at least a bottom surface spaced from the back face portion and a side wall surface extending between the bottom surface and the strike face; and
an insert located in the recess formed of a first vibration dampening material comprising an insert material formed from the conversion reaction of a resilient polymer having sufficient amounts of polybutadiene, a free radical source, and a cis-to-trans catalyst, which reaction occurs at a sufficient temperature to form a polybutadiene reaction product which comprises an amount of trans-polybutadiene isomer greater than the amount of trans-polybutadiene isomer present before the conversion reaction.
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Accused Products
Abstract
An insert for a golf club, and method of forming said insert, comprising a material formed from the conversion reaction of an amount of polybutadiene, a free radical source, and a cis-to-trans catalyst, which reaction occurs at a sufficient temperature to form a polybutadiene reaction product which comprises an amount of trans-polybutadiene greater than the amount of trans-polybutadiene present before the conversion reaction. Further, a golf club having a toe and an opposite heel, a sole portion, and an opposite top portion, a forwardly facing exposed strike face and an opposite rearwardly facing exposed back face portion, comprising a recess defined in the strike face, the recess having a bottom surface spaced from the back face portion and a side wall surface extending between the bottom surface and the strike face for disposing the insert.
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Citations
42 Claims
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1. A golf club having a toe and an opposite heel, a sole portion and an opposite top portion, a forwardly facing exposed strike face, an opposite rearwardly facing exposed back face portion, a hosel, and a shaft, comprising:
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a recess defined in the strike face, said recess having at least a bottom surface spaced from the back face portion and a side wall surface extending between the bottom surface and the strike face; and
an insert located in the recess formed of a first vibration dampening material comprising an insert material formed from the conversion reaction of a resilient polymer having sufficient amounts of polybutadiene, a free radical source, and a cis-to-trans catalyst, which reaction occurs at a sufficient temperature to form a polybutadiene reaction product which comprises an amount of trans-polybutadiene isomer greater than the amount of trans-polybutadiene isomer present before the conversion reaction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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- 16. A golf club insert comprising an insert material formed from the conversion reaction of a sufficient amount of a resilient polymer including polybutadiene, a free radical source, and a cis-to-trans catalyst, which reaction occurs at a sufficient temperature to form a polybutadiene reaction product which comprises an amount of trans-polybutadiene greater than the amount of trans-polybutadiene present before the conversion reaction.
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27. A method for forming a golf club insert which comprises:
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combining a cis-to-trans catalyst;
a free radical source; and
a first resilient polymer component comprising a polybutadiene component having cis-isomer present in an amount greater than about 70 percent of the total polymer component;
converting a portion of the first resilient polymer component to a second resilient polymer component at a temperature sufficient to convert at least a portion of the cis-polybutadiene isomer to a trans-polybutadiene isomer; and
forming the second resilient polymer component into at least a portion of the golf club insert. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
the forming comprises shaping the second resilient polymer component into a substantially rectangular shape.
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42. The method of claim 41, wherein the converting and forming are substantially simultaneous.
Specification