Multi-piece solid golf ball
US6626770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 8, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2209/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention provides a multi-piece solid golf ball having excellent rebound characteristics when hitting at low head speed because the rebound characteristics do not depend on the head speed at the time of hitting. The present invention relates to a multi-piece solid golf ball comprising core 5 composed of inner core 1, middle core 2, and outer core 3 and at least one layer of cover 4, wherein the above-mentioned inner core has a JIS-C hardness of 63 to 83, the above-mentioned outer core has a JIS-C hardness of 63 to 83, the JIS-C hardness of the above-mentioned inner core is greater than the JIS-C hardness of the above-mentioned middle core by 4 to 40, the JIS-C hardness of the above-mentioned outer core is greater than the JIS-C hardness of the above-mentioned middle core by only 4 to 40, each of the above-mentioned core layers are composed of a vulcanized molded article of a rubber composition containing base rubber, co-crosslinking agent, organic peroxide, and when necessary organic sulfide compound, and the two formulas, 0≦H1/H2<1 and 0≦H3/H2<1 are satisfied when the amounts of organic sulfide that is added to each of the above-mentioned core layers are H1, H2,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.