Iron type golf club head
First Claim
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1. An iron type golf club head, comprising:
- a head proper made of metal; and
a member fabricated from a resin material which possesses a compression Young'"'"'s modulus value lower than that of steel, and occupying at least the central part of a golf ball striking face of said head wherein said ball striking face of said member is not provided with face grooves and is formed to be flat and smooth.
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Accused Products
Abstract
An iron type golf club head having the whole or the central part of a ball striking face thereof, which directly touches a golf ball, fabricated from a material possessing a compression Young'"'"'s modulus (modules of longitudinal elasticity) lower than that of steel.
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Citations
20 Claims
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1. An iron type golf club head, comprising:
- a head proper made of metal; and
a member fabricated from a resin material which possesses a compression Young'"'"'s modulus value lower than that of steel, and occupying at least the central part of a golf ball striking face of said head wherein said ball striking face of said member is not provided with face grooves and is formed to be flat and smooth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a head proper made of metal; and
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14. An iron type golf club head, comprising:
- a head proper made of metal; and
a member formed from a synthetic resin material having a compression Young'"'"'s modulus value of from 30 to 2,000 kg/mm2, said member occupying a major portion of the golf ball striking face of said head and said member forming a striking face which is not provided with face grooves and which is smooth and flat over a major portion of said striking face. - View Dependent Claims (15, 16, 17, 18)
- a head proper made of metal; and
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19. An iron type golf club head, comprising:
- a head proper made of metal, said head proper having a shallow recess covering a major porton of the golf ball striking face of said head proper; and
an insert made of a synthetic resin material having a compression Young'"'"'s modulus value of from 30 to 2,000 kg/mm2 located in said recess, said insert having a smooth and flat golf ball striking surface. - View Dependent Claims (20)
- a head proper made of metal, said head proper having a shallow recess covering a major porton of the golf ball striking face of said head proper; and
Specification