Golf clubs and golf club heads
US9849358B2 · kind B2 · utility
10Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Jan 13, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2209/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Golf club heads include an exposed ball striking surface at a top-to-bottom center line of the ball striking face having a first material and a second material of different hardnesses. A top-to-bottom cross section of the exposed ball striking surface at the top-to-bottom center line of the ball striking face has a structure that includes a plurality of grooves including: (a) a first groove having a first edge made of the first material and a second edge made from the second material, and (b) a second groove having its opposing edges made of the first material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.