Amusement devices: games – Board games – pieces – or boards therefor – Rotatably mounted board
Patent
1994-05-17
1996-02-13
Marlo, George J.
Amusement devices: games
Board games, pieces, or boards therefor
Rotatably mounted board
273235R, A63B 3712
Patent
active
054906733
ABSTRACT:
Disclosed is a golf ball having an excellent (soft) hit feeling and excellent durability, which is suitable for use on the driving range. The golf ball has a two-layer structure including a core and a cover for coating the core. A compressive strain of the core is 2.8 to 3.8 mm. A hardness distribution of the core (measured by a JIS-C type hardness tester) is adjusted to 65 to 79 at the center, 70 to 80 at the location which is 5 mm away from the center to the surface, 73 to 80 at the location which is 10 mm away from the center to the surface, 75 to 82 at the location which is 15 mm away from the center to the surface and 70 to 85 at the surface, and a difference in hardness between adjacent locations of the measurement is within 5. The cover contains an ionomer resin as a main material and a stiffness of the cover is 1400 to 3000 kg/cm.sup.2. The golf ball has a ball compression that is 70 to 100 (PGA system).
REFERENCES:
patent: 5184828 (1993-02-01), Kim et al.
patent: 5304608 (1994-04-01), Yabuki et al.
Database WPI, Section Ch, Week 8526, Derwent Publications Ltd., AN-157367 & JP-A-60 090 575.
Marlo George J.
Sumitomo Rubber Industries Ltd.
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