Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Reexamination Certificate
2011-01-18
2011-01-18
Kwok, Helen C. (Department: 2856)
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
C073S649000, C473S131000, C473S151000, C473S221000
Reexamination Certificate
active
07870790
ABSTRACT:
A method for evaluating feeling of hitting of a golf club, includes: measuring vibration of a golf club appearing in a circumferential direction of a shaft when a golf ball is hit by the golf club having the three-axis accelerometer attached to the shaft by a three-axis accelerometer; analyzing the vibration of the golf club along the circumferential direction of the shaft measured by the three-axis accelerometer by a hand-arm vibration measurement filter; and evaluating feeling of hitting of the golf club in accordance with a result of analysis of vibration of the golf club appearing along the circumferential direction of the shaft by the hand-arm vibration measurement filter.
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patent: 05-118952 (1993-05-01), None
Ban Wataru
Sato Fumiaki
Bridgestone Sports Co. Ltd
Kwok Helen C.
Sughrue & Mion, PLLC
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