Multi-layer golf ball
US6287217A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Sep 1, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the outer cover comprises at least 75% of a soft, ionomeric copolymer formed from a polyolefin, an unsaturated carboxylic acid, and a monomer of the acrylate ester class. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.