发明名称 Golf ball
摘要 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/cm2. The golf ball has a ball compression that is 70 to 100 (PGA system).
申请公布号 US5490673(A) 申请公布日期 1996.02.13
申请号 US19940243786 申请日期 1994.05.17
申请人 SUMITOMO RUBBER INDUSTRIES, LTD. 发明人 HIRAOKA, HIDENORI
分类号 A63B37/00;A63B37/04;A63B37/12;(IPC1-7):A63B37/12 主分类号 A63B37/00
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