Amusement devices: games – Surface projectile game; game element – Simulated game
Patent
1987-09-21
1989-05-16
Smith, Leonard E.
Amusement devices: games
Surface projectile game; game element
Simulated game
A63B 6936
Patent
active
048303771
ABSTRACT:
A golf club comprises a strain gauge attached to a surface of a hollow shaft in the vicinity of a kick point for detecting a bending of the shaft and a sound indicator for generating a sound when a strain of the shaft, particularly at the kick point, exceeds a predetermined level, so that a golf player can easily confirm whether or not sufficient force is exerted on the shaft during the downswing motion.
REFERENCES:
patent: 3792863 (1974-02-01), Evans
patent: 3806131 (1974-04-01), Evans
patent: 3945646 (1976-03-01), Hammond
patent: 4239227 (1980-12-01), Davis
patent: 4453716 (1984-06-01), Oppenheimer
patent: 4515368 (1985-05-01), Petitjean
patent: 4693479 (1987-09-01), McGuire
Maruman Golf Co. Ltd.
Smith Leonard E.
Szczecina Jr. Eugene L.
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