Three-piece solid golf ball
US5048838A · kind A · utility
288Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1990 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0083
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The inner layer of the core has a diameter of 15-25 mm, a weight of 2-14 grams, a specific gravity of 1.2-4, and a hardness of 55-80 JIS C. The outer layer has a specific gravity lower than that of the inner layer by 0.1-3.0. The cover has a radial thickness of 1.5-2.5 mm. A three-piece solid golf ball comprising a two-piece solid core consisting of inner and outer layers and a cover enclosing the core is improved in durability and flying performance through a proper choice of physical parameters of the core inner and outer layers and the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.