Metallic golf club head having a weight and method of manufacturing the same
First Claim
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1. A metallic golf club head, comprising:
- a hollow head body having a bottom opening;
a sole member fitted in said bottom opening; and
a weight secured to said sole member,wherein said sole member includes an upwardly-opened weight-fitting concave portion having an inner bottom with at least one protrusion,wherein said weight is forcibly fitted in said concave portion and said at least one protrusion is forcibly inserted in a bottom of said weight, whereby said weight is firmly fixed in said concave portion, andwherein said sole member is welded to said hollow head body.
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Abstract
A golf club head includes a hollow head body having a bottom opening and a sole member welded to the hollow head body, both of which are made of titanium or titanium alloy. An upwardly-opened weight-fitting concave portion is formed on an inner surface of the sole member. A protrusion is formed on the inner surface of the concave portion. A weight made of a metallic material such as brass is formed. The weight is forcibly fitted into the concave portion and the protrusion of the concave portion is forcibly inserted in the bottom surface of the weight, whereby the weight is fixed in the concave portion. Then, the sole member with the weight is welded to the hollow head body.
175 Citations
11 Claims
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1. A metallic golf club head, comprising:
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a hollow head body having a bottom opening; a sole member fitted in said bottom opening; and a weight secured to said sole member, wherein said sole member includes an upwardly-opened weight-fitting concave portion having an inner bottom with at least one protrusion, wherein said weight is forcibly fitted in said concave portion and said at least one protrusion is forcibly inserted in a bottom of said weight, whereby said weight is firmly fixed in said concave portion, and wherein said sole member is welded to said hollow head body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of manufacturing a metallic golf club head, which includes a hollow head body having a bottom opening, a sole member fitted in said bottom opening and welded to said hollow head body, and a weight secured to said sole member, the method including the steps of:
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preparing a sole member made of a metallic material including an upwardly-opened weight-fitting concave portion which has an inner bottom with at least one protrusion; heating said sole member to expand said concave portion; fitting said weight into said expanded concave portion of said sole member and forcibly inserting said protrusion into a bottom of said weight; cooling said concave portion to shrink-fit the weight in said concave portion; fitting said sole member with said weight into said bottom opening of said hollow head body; and welding said sole member fitted in said bottom opening to said hollow head body. - View Dependent Claims (11)
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Specification