Golf club head
First Claim
1. A golf club head comprising:
- a face;
a plurality of score line grooves formed on the face; and
a plurality of striations formed in the face by milling,wherein edges of each score line groove are rounded with a radius of not more than 0.2 mm,wherein a width W (mm) of the score line groove measured including the rounded edges and a width Ws (mm) representing a distance between adjacent score line grooves satisfy a first expression;
S/(Wr×
0.5)×
100≧
70(%), andwherein a width Wr (mm) of the score line groove measured based on a 30 degrees measurement rule and a cross section area S (mm2) of the score line grooves satisfy a second expression;
W/Ws×
100≧
35(%)wherein the face in which the striations are formed has an arithmetic mean deviation of a profile (Ra) of not less than 4.00 μ
m, andwherein each striation forms a circular arc, said striations are the only circular arcs on said face, said striations do not intersect with each other on said face, and each score line groove intersects with a plurality of said striations.
1 Assignment
0 Petitions
Accused Products
Abstract
A golf club head of this invention includes a face, a plurality of score line grooves formed on the face, and traces formed in the face by milling. Edges of the score line grooves are rounded with a radius of not more than 0.2 mm. A width W (mm) of the score line groove measured with the rounded edge being included, a width Ws (mm) between the score line grooves adjacent to one another, a width Wr (mm) of the score line groove measured based on the 30 degrees measurement rule and a cross section area S (mm2) of the score line grooves satisfy the flowing expressions; W/Ws×100≧35(%) and S/(Wr×0.5)×100≧70(%). The face in which the traces are formed has the arithmetic mean deviation of the profile (Ra) of not less than 4.00 μm.
123 Citations
5 Claims
-
1. A golf club head comprising:
-
a face; a plurality of score line grooves formed on the face; and a plurality of striations formed in the face by milling, wherein edges of each score line groove are rounded with a radius of not more than 0.2 mm, wherein a width W (mm) of the score line groove measured including the rounded edges and a width Ws (mm) representing a distance between adjacent score line grooves satisfy a first expression;
S/(Wr×
0.5)×
100≧
70(%), andwherein a width Wr (mm) of the score line groove measured based on a 30 degrees measurement rule and a cross section area S (mm2) of the score line grooves satisfy a second expression;
W/Ws×
100≧
35(%)wherein the face in which the striations are formed has an arithmetic mean deviation of a profile (Ra) of not less than 4.00 μ
m, andwherein each striation forms a circular arc, said striations are the only circular arcs on said face, said striations do not intersect with each other on said face, and each score line groove intersects with a plurality of said striations. - View Dependent Claims (2, 3, 4, 5)
-
Specification