Golf ball
US11975242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Dec 8, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0024
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An object of the present disclosure is to provide a golf ball having good shot feeling and excellent durability and not having lowered resilience even if a hard cover material is used. The present disclosure provides a golf ball comprising a spherical core, and a cover disposed outside the spherical core and composed of one or more layers, wherein at least one cover layer contains (A) a base resin, and (B) at least one member selected from the group consisting of a polyrotaxane, a polyethylene oxide, a polypropylene oxide, a polycaprolactone and a liquid polymer, and Sa×Spc≥100 wherein Sa (μm) is an arithmetic mean roughness of a surface of a cut plane of the cover, and Spc (mm−1) is an arithmetic mean curvature of a summit of the surface of the cut plane of the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.