Two-piece golf ball
US5403010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0074
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A two-piece golf having a feel of hitting close to that of a thread-wrapped golf ball. A two-piece golf ball consisting of a core formed of a rubber composition containing a base rubber, a co-crosslinking agent, and an organic peroxide, and a cover covering the core, characterized in that: PA0 the core has the following hardness distribution according to JIS - C type hardness meter readings: PA1 (1) hardness at center, position A: 58-73 PA1 (2) hardness at 5 to 10 mm from center, position B: 65-75 PA1 (3) hardness at 15 mm from center, position C: 74-82 PA1 (4) surface hardness, position D: 76-84 (wherein hardness (2) is generally constant within the range shown, with a variation range of .+-.3, and satisfies the relation (1)<(2)<(3).ltoreq.(4) in other respects), and PA0 the core has a compression deflection of 3.5 to 4.3 mm when a load range of initial 10 kg to final 130 kg is applied, the cover having a thickness of 2.1 to 2.8 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.