A - Human Necessities – 63 – B
Patent
A - Human Necessities
63
B
A63B 37/02 (2006.01) A63B 37/00 (2006.01) A63B 37/06 (2006.01) A63B 37/08 (2006.01) A63B 37/12 (2006.01) A63B 37/14 (2006.01) C08K 5/098 (2006.01)
Patent
CA 2109903
- 18 - ABSTRACT OF THE DISCLOSURE A two-piece golf having a feel of hitting close to that of a thread-wrapped golf ball. A two-piece golf ball consisting of a core formed of a rubber composition containing a base rubber, a co-crosslinking agent, and an organic peroxide, and a cover covering said core, characterized in that: the core has the following hardness distribution according to JIS - C type hardness meter readings: (1) hardness at center : 58 - 73 (2) hardness at 5 to 10 mm from center: 65 - 75 (3) hardness at 15 mm from center : 74 - 82 (4) surface hardness : 76 - 84 (wherein hardness (2) is generally constant within the range shown, with a variation range of ?3, and satisfies the relation (1)<(2)<(3)?(4) in other respects), and the core has a compression deflection of 3.5 to 4.3 mm when a load range of initial 10 kg to final 130 kg is applied, the cover having a thickness of 2.1 to 2.8 mm.
Endo Seiichiro
Yabuki Yoshikazu
Kirby Eades Gale Baker
Sumitomo Rubber Industries Limited
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