Measuring and testing – Testing impact delivering device
Reexamination Certificate
2007-01-16
2007-01-16
Noori, Max (Department: 2855)
Measuring and testing
Testing impact delivering device
C073S065030
Reexamination Certificate
active
10187891
ABSTRACT:
A method of evaluating restitution characteristics of a golf club head, a system for evaluating the restitution characteristics and a golf club, are provided in which a coefficient of restitution of a golf club head is inferred and obtained without disassembling the golf club by removing the golf club head away from a shaft and the coefficient of restitution may extremely easily be obtained for a short period of time. At first, an external force to a striking face of the golf club head is imparted to perform impact vibration. A response signal of the striking face under the impact vibration is acquired to obtain a resonant frequency of the striking face. A coefficient of restitution is calculated from the resonant frequency when the golf ball is struck by the striking face, whereby restitution characteristics of the golf club head are inferred and evaluated.
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Ono Kazunori
Saegusa Hiroshi
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Noori Max
The Yokohama Rubber Co. Ltd.
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