Golf clubhead
US7018303B2 · kind B2 · utility
142Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Dec 3, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B53/047
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf clubhead comprises a face portion having a back surface which is provided around a center region with at least two annular grooves so that the face portion is provided with at least two annular thin parts each being thinner than the center region and at least one rib part between the thin parts, whereby the rebound performance and durability of the face portion can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.