Multi-piece solid golf ball
US6210292A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/12
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A multi-piece solid golf ball including a relatively soft core, a very soft intermediate layer, and a thermoplastic resin-based cover harder than the intermediate layer by at least 20 Shore D units. The product (AxB) of the Shore D hardnesses of the cover and the intermediate layer and a dimple volume ratio V.sub.R (%) satisfy a specific relationship, and at least three types of dimples which are different in at least one of diameter, depth, and V.sub.0 are formed on the ball surface. The ball has a very soft pleasant feel upon approach shots and putting, ease of control upon iron shots, and a satisfactory trajectory and improved flight performance upon full shots with a driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.