Multi-piece golf ball comprising low hardness gradient core
US8152655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2010 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Dec 9, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/008
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf ball includes a single core formed from a substantially homogenous rubber composition, an inner cover disposed about the core, and an outer cover. The inner cover includes an ionomeric material and has a hardness of about 60 Shore D or greater. The outer cover layer is disposed about the inner cover layer, is formed from a castable polyurea or polyurethane, and has a material hardness of about 60 Shore D or less. The outer surface of the core has a trans content of about 12% or less and a hardness of about 71 to 88 Shore C, the geometric center of the core has a trans content of about 10% or less and a hardness of about 70 to 80 Shore C, and the core surface hardness is greater than the geometric center hardness by about 1 to 10 Shore C to define a shallow positive hardness gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.