Three-piece solid golf ball
US5072944A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Apr 4, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0091
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed is a large size three piece solid golf ball comprising a center, an outer layer covering said center to form a solid core and a cover covering said solid core, wherein said center has a diameter of 15 to 24 mm and a center hardness of 25 to 50 (JIS-C), prepared from a rubber composition comprising 100 parts by weight of cis-1,4-polybutadiene, 9 to 20 parts by weight of zinc acrylate and 3 to 150 parts by weight of a zinc oxide, said solid core has a diameter of 36 to 40 mm and a surface hardness of 70 to 90 (JIS-C), a difference between the center hardness and the surface hardness of the solid core is 20 or more and the specific gravity of the center and the outer layer has the following relation; PA0 a specific gavity of the center.gtoreq.a specific gravity of the outer layer, and PA0 the specific gravity of the center.gtoreq.1.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.