Golf ball
US10507361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jul 28, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/14
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf ball has a plurality of dimples 12 and a land 14 on a surface thereof. The golf ball further has a large number of minute projections 18 formed on surfaces of the dimples 12 and the land 14. An average pitch Pav of these minute projections 18 is less than 100 μm. An average height Hav of these minute projections 18 is not less than 0.5 μm and not greater than 50 μm. The golf ball satisfies the following mathematical formula. Lav<3*Tav In the mathematical formula, Lav represents an average value of distances L between the minute projections 18 and other minute projections 18 adjacent to the minute projections 18, and Tav represents an average value of widths T of these minute projections 18.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.