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US 7,677,990 B2Granted
Golf club head
AssigneeBridgestone Sports Co., Ltd.
InventorWataru Ban
Life of this patent
Estimating the term…
Abstract
A golf club head of this invention includes a face and a plurality of striations formed on the face by milling. A pitch P in the arrangement direction of the plurality of striations satisfies 300 μm≦P≦600 μm. The surface roughness of a region in the face with the striations satisfies in the maximum height of the profile Ry, 15 μm≦Ry≦0.005×P+15.7 μm.
Claims4
A golf club head including:
- a face;
- a plurality of score line grooves formed on the face;
- and
- a plurality of striations formed on said face by milling,
- wherein a pitch P in an arrangement direction of said plurality of striations satisfies
- 300 μm≦P≦600 μm,
- a surface roughness of a region in said face with said striations satisfies in a maximum height of profile Ry, where
- 15 μm≦Ry≦0.005×P+15.7 μm,
- said striations do not intersect with each other on said face, and
- each score line groove intersects with a plurality of said striations.
7 more elements
Dependencies are inferred from the claim text.