Two piece golf ball
US5516110A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1993 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Sep 13, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S273/22
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The objective of the present invention is to bring hit feeling of two-piece balls closer to that of thread-wound golf balls. The two-piece golf ball of the present invention comprises a core formed from a rubber composition comprising a base rubber, a co-crosslinking agent and an organic peroxide, and a cover covering the core, wherein said core has the following hardness distribution when measured by a JIS-C hardness meter; PA1 (1) hardness at a center: 58-73 PA1 (2) hardness at 5-10 mm from the center: 68-78 PA1 (3) hardness at 15 mm from the center: 76-88 PA1 (4) surface hardness: 78-88 (in the hardness distribution, hardness (2) is substantially constant being within the above range, of which tolerance is within .+-.3 and the other values satisfy the relation of (1)<(2)<(3).ltoreq.(4) ), a compression deformation of the core is 2.8-3.5 mm when pressurized by an initial load of 10 kg up to a final load of 130 kg and said cover has a thickness of 1.5-1.9 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.