Wound golf ball
US5628699A · kind A · utility
76Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Jul 28, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2037/087
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
In a wound golf ball comprising a solid center (1), thread rubber (2), and a cover (3), the cover has a multi-layer structure including an outer layer (4) and an inner layer (5) having a higher hardness than the outer layer. The outer layer (4) is 0.4-3.0 mm thick, and it is formed of a first ionomer resin having a Shore D hardness of 40 to 55. The inner layer is formed of a second ionomer resin having a Shore D hardness of 55 to 68. The difference in hardness between the first and second ionomer resins is at least 5 in Shore D hardness. The ball affords improved spin and durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.