Games using tangible projectile – Golf – Ball
Patent
1997-11-04
1999-10-05
Marlo, George J.
Games using tangible projectile
Golf
Ball
473377, 473378, A63B 3712
Patent
active
059614013
ABSTRACT:
A golf ball is composed of at least a pair of adjacent concentric solid layers or three adjacent concentric solid layers. In the former case, the outer solid layer is composed of a matrix and non-metallic high-hardness grains having hardness higher than that of the matrix which has a Shore D range of 36-40. In the later case, the intermediate solid layer is composed of a matrix and high-hardness grains having hardness higher than that of the matrix. The high-hardness grains have a Shore D hardness in the range of 50-70 and penetrate the corresponding solid layer in normal directions. The golf ball can provide a player with different feels on impact depending on the direction of an external force applied thereto when the golf ball is hit.
REFERENCES:
patent: 1482232 (1924-01-01), Hazeltine
Ihara Keisuke
Inoue Michio
Kasashima Atsuki
Masutani Yutaka
Shimosaka Hirotaka
Bridgestone Sports Co. Ltd.
Marlo George J.
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