Golf club head and golf club set
US6984180B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2003 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Mar 13, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf club head is formed by integrally welding a face portion and a back portion with each other. The face portion has a circumferential edge portion in its back surface. The circumferential edge portion is made of a flat surface all over its circumference. In the rear surface of the face portion, the part other than the circumferential edge portion is formed as a recess portion. In the bottom surface of the recess portion, a first bottom surface which is the deepest, a second bottom surface which is the second deepest, a third bottom surface which is the third deepest, and a fourth bottom surface which is the shallowest are formed in descending order. Three ribs are provided vertically to extend through the recess portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.