Iron type golf club head
First Claim
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1. An iron type golf club head comprising:
- a head body constituted by a blade portion, a sole portion, and an impact surface portion,wherein at least said impact surface portion of said head body is constituted by a thin plate consisting of a thermoelastic type martensite transformation alloy comprising a NiTi alloy of CuZnAl alloy or CuNiAl alloy, and a thickness of said impact surface portion is set in the range of 1.0 to 5.0 mm and is smaller than that of each of said blade and sole portions of said head body.
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Abstract
An iron type golf club head includes a head body constituted by a blade portion, a sole portion, and an impact surface portion. At least the impact surface portion of the head body is constituted by a thin plate consisting of a thermoelastic type martensite transformation alloy. The thickness of the impact surface portion is set in the range of 1.0 to 5.0 mm, and is smaller than that of each of the blade and sole portions of the head body.
346 Citations
13 Claims
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1. An iron type golf club head comprising:
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a head body constituted by a blade portion, a sole portion, and an impact surface portion, wherein at least said impact surface portion of said head body is constituted by a thin plate consisting of a thermoelastic type martensite transformation alloy comprising a NiTi alloy of CuZnAl alloy or CuNiAl alloy, and a thickness of said impact surface portion is set in the range of 1.0 to 5.0 mm and is smaller than that of each of said blade and sole portions of said head body. - View Dependent Claims (2, 3, 4)
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5. An iron type golf club head comprising:
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a head body including a blade portion, a sole portion and an impact surface portion; said head body including means for improving directional stability of a golf ball when the golf ball is struck with said impact surface portion and for increasing a distance the ball travels after being struck with said impact surface portion, said means comprising a thin plate which constitutes said impact surface portion, said thin plate comprising a thermoelastic type martensite transformation alloy which exhibits super elastic behavior due to stress-induced martensite formed upon impact with the ball sot hat a larger contact area and contact time between the ball and the thin plate can be obtained, said thin plate having a thickness of 1.0 to 5.0 mm. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification