Golf club head
US8328662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/303752
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A head 2 has a face line 8 having a depth of D1 (mm). When a boundary between a land area and a face line is defined as a point Pa; a point of which a depth is [D1/4] (mm) is defined as a point Pb; a point of which a depth is [D1/2] (mm) is defined as a point Pc; a point of which a depth is [(D1)×(¾)] (mm) is defined as a point Pd; a point of which a depth is 0.002 (mm) is defined as a point Px; a radius of a circle CL1 passing through three points of the point Pa, the point Pb, and the point Pc is defined as R3 (mm); a straight line passing through the point Pa and the point Px is defined as a straight line Lax; and an angle between the land area and the straight line Lax is defined as θ2 (degree), the radius R3 is 0.2 (mm) or greater and 0.4 (mm) or less, and the angle θ2 is 10 degrees or greater and 50 degrees or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.