HOLLOW GOLF CLUB HEAD
First Claim
1. A hollow golf club head comprising a club head plate including thinned parts and ribs protruded therefrom, said thinned parts and ribs being formed by chemically polishing a certain area on a surface of a material of said club head plate to adjust weight and thickness of said club head plate,wherein the chemically-polished area on the surface of the material of said club head plate comprises:
- a first area on which a plurality of said ribs are formed; and
a second area surrounded with the plurality of said ribs to define said thinned parts, andwherein the thickness of the material of said club head plate is greater than that of said first area, and that of said first area is greater than that of said second area.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided a Ti alloy hollow club head which is more lightweight yet capable of realizing a better repulsion force by adjusting weight and thickness of a club head plate, with its strength ensured. Ribs are formed by chemically polishing the inner surface of a material of a crown plate to a 0.3 to 0.9 mm thickness, and a 0.3 to 4 mm width, and then first concave portions are formed to a 0.2 to 0.5 mm thickness. Thus, strength of the crown plate can be ensured by the ribs, while making the thickness thereof as thin as possible.
41 Citations
10 Claims
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1. A hollow golf club head comprising a club head plate including thinned parts and ribs protruded therefrom, said thinned parts and ribs being formed by chemically polishing a certain area on a surface of a material of said club head plate to adjust weight and thickness of said club head plate,
wherein the chemically-polished area on the surface of the material of said club head plate comprises: -
a first area on which a plurality of said ribs are formed; and a second area surrounded with the plurality of said ribs to define said thinned parts, and wherein the thickness of the material of said club head plate is greater than that of said first area, and that of said first area is greater than that of said second area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification