Golf club with face insert of variable hardness
US5405136A · kind A · utility
171Cited by
29References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Sep 20, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B53/0462
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf clubhead includes a face insert whose hardness varies from the center of the face insert to the outside of the face insert for compensating for off-center hits. The hardness of the face insert can be varied by forming the face insert from a plurality of rings or by varying the thickness of the insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.