Golf club
US8814724B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jul 25, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B53/0458
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf club has a reverse flex is 80 to 110 mm. The face portion includes a central thick part, a toe-crown-side thin part on a crown-side and on a toe-side of the central thick part, and a heel-sole-side thin part on a sole-side and on a heel-side the central thick part. In the front view of the head, a first straight line passing an area centroid of the toe-crown-side thin part and an area centroid of a back surface of the face portion has an angle θA of 38 to 45 degrees, and a second straight line passing an area centroid of the heel-sole-side thin part and the area centroid of the back surface of the face portion has an angle θB of 40 to 45 degrees, each with respect to the horizontal plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.