Golf ball
US9707452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Nov 27, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0019
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf ball has a large number of dimples 10 on a surface thereof. The dimples 10 include a plurality of small dimples 10S each having an area of less than 8.0 mm2, and a plurality of large dimples 10L each having an area of equal to or greater than 8.0 mm2. A ratio PS of a sum of areas of all the small dimples 10S to a surface area of a phantom sphere of the golf ball is less than 2.0%. The number NL of the large dimples 10L is equal to or greater than 250 but less than 450. The number NL of the large dimples 10L and a degree G of uniformity of areas of the large dimples 10L satisfy the following mathematical formula (II):G<0.0032·NL+0.26 (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.