Golf balls
US4722529A · kind A · utility
46Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | May 9, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/002
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A spherical golf ball (10) is provided with at least 500 dimples and 30 bald patches symmetrically disposed over the surface of the ball, the disposition of the dimples being substantially the same in each of twelve regions (11) of the surface of the sphere which are defined by projecting on to the surface the edges of a regular dodecahedron. At the mid point of each edge of the dodecahedron there is a bald patch (20, 21, 22, 23, 24). Each bald patch has the shape of a spherical rectangular dumbbell, a surface area of from 1.0 to 2.5 times the mean dimple area and does not enclose any dimple or part thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.