Multi-piece solid golf ball
US6537158B2 · kind B2 · utility
140Cited by
10References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Apr 24, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2209/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A multi-piece solid golf ball comprising a solid core, an intermediate layer, and a cover is improved in flight distance, feel and durability when the solid core has a maximum hardness at a position spaced 3-10 mm inward from its surface, the difference between the maximum hardness and the hardness at its center is at least 3 JIS-C hardness units, and the intermediate layer is softer than the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.