Multi-piece golf ball
US6815521B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2002 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Nov 7, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/12
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A multi-piece golf ball with a two-part curing type polyurethane cover is provided, which is satisfactory in moldability and ball characteristics such as a abrasion resistance and a carry. The multi-piece golf ball according to this invention has a core having an increased diameter and provided with a hardness difference between its surface portion and its central portion. This feature imparts the multi-piece golf ball with such characteristics as a high repulsion property, high shot angle and low spin count, thereby making the golf ball ensure an increased carry. The polyurethane cover of the multi-piece golf ball, which is formed from a two-part curing type polyurethane including a specific isocyanate group-terminated urethane prepolymer and an aromatic polyamine compound, is excellent in durability and abrasion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.