Metallic golf clubhead
First Claim
1. A metallic golf club head comprising:
- a head body having a hollow portion therein, said hollow portion having a volume of 45 to 65 cc;
a window aperture provided in a back crust of the head body; and
a weight secured into the window aperture by caulking, said weight being formed of metallic materials of which the specific gravity is larger than that of the head body.
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Accused Products
Abstract
A metallic golf club head of which the center of gravity is kept a large distance off from a face to enlarge a sweet area, which also enables players to hit balls more easily upward. In one embodiment, a back crust of the head body made of pure titanium or titanium alloy is formed with a window aperture, into which is secured a weight made of beryllium copper alloy. In another embodiment, a weight is secured onto a sole by vises with a large specific gravity. According to the invention, the center of gravity of head body is capable of being positioned as backward and low as possible, so that the distance between the face and the center of gravity can be elongated, making it easier to hit balls upward.
370 Citations
12 Claims
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1. A metallic golf club head comprising:
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a head body having a hollow portion therein, said hollow portion having a volume of 45 to 65 cc; a window aperture provided in a back crust of the head body; and a weight secured into the window aperture by caulking, said weight being formed of metallic materials of which the specific gravity is larger than that of the head body. - View Dependent Claims (2, 8)
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3. A hollow metallic golf club head comprising:
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a head body consisting of a back crust and a face crust, said back crust having a sole; a hollow interior defined by the back and face crust, said hollow interior having a 50 to 70 cc volume; a weight secured onto said sole, a ratio of the weight to the head body being from 1;
3 to 5;
12 by weight. - View Dependent Claims (4, 5, 6, 7, 9, 10, 11, 12)
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Specification