Method for manufacturing iron-type golf club head
First Claim
1. An iron-type golf club head having a metallic head body with a shaft attaching portion at one side thereof and a face at a front side thereof, said face being formed with adjacent score lines thereon, which comprises:
- a rear surface opposite to said face, said rear surface being formed with a plurality of cavities by forging, wherein forging of said cavities provides grain flows adjacent said cavities, each cavity having a substantially flat bottom area and having at least one inclined side surface extending from said bottom area, wherein the bottom area only is completely disposed within an area opposite to an area between the aforesaid adjacent score lines.
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Accused Products
Abstract
A method for manufacturing a golf club head, which enables a face to be formed thinner to realize a more free distribution of weight. A flat surface 1A of a head body 1 is formed with plural cavities 6 to strengthen a face 4. Thus, the face 4 can be made thinner, which enables the distributing of thus obtained surplus weight to other parts of the head body 1. Each cavity 6 is disposed opposite to an area 9A between adjacent score lines 5. Accordingly, sufficient thicknes A of the face 4 can be guaranteed to prevent the degradating of strength caused by forming the thinner face 4.
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Citations
10 Claims
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1. An iron-type golf club head having a metallic head body with a shaft attaching portion at one side thereof and a face at a front side thereof, said face being formed with adjacent score lines thereon, which comprises:
a rear surface opposite to said face, said rear surface being formed with a plurality of cavities by forging, wherein forging of said cavities provides grain flows adjacent said cavities, each cavity having a substantially flat bottom area and having at least one inclined side surface extending from said bottom area, wherein the bottom area only is completely disposed within an area opposite to an area between the aforesaid adjacent score lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification