Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1990-05-24
1991-08-06
Lieberman, Allan M.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
524908, 26099814, 525236, 525237, 5253326, A63B 3712
Patent
active
050371045
ABSTRACT:
In a thread-wound golf ball comprising a thread-wound core and a cover, the cover is formed of a vulcanized rubber composition comprising a base rubber containing at least 30% by weight of transpolyisoprene and has a vulcanizing sulfur content ratio between radially outer and inner half regions of from 1/2 to 4/1. Sufficient vulcanizing sulfur available throughout the cover renders the cover to be resistant to cut and shear so that the ball becomes durable.
REFERENCES:
patent: 1524428 (1925-01-01), Geer
patent: 1926315 (1933-09-01), Smith
patent: 3362937 (1988-01-01), Kent
patent: 4353557 (1982-10-01), Kajita et al.
Egashira Yoshinori
Takahashi Kazuyuki
Tomita Seisuke
Watanabe Yoichi
Bridgestone Corporation
Lieberman Allan M.
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