Golf ball and method of making same
US5820488A · kind A · utility
Inventors
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0093
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A non-wound golf ball, comprising a central core, a cover having a thickness of at least about 30 mils and comprising a member selected from the group consisting of ionomers, acrylic acid, methacrylic acid and polyethylene surrounding the core, and a moisture barrier surrounding the core and being located between the cover and the core. The moisture barrier has a lower water vapor transmission rate than the cover and an average thickness substantially less than the cover thickness. The moisture barrier has a water vapor transmission rate which is sufficiently low to reduce the loss of coefficient of restitution of the golf ball by at least 5% if the ball is stored at 100.degree. F. and 70% relative humidity for six weeks as compared to the loss in coefficient of restitution of a golf ball which does not include the moisture barrier, has the same type of core and cover, and is stored under substantially identical conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.