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US 8,133,133 B2Granted
Forged iron-type golf clubs
AssigneeAcushnet Company
InventorsPeter J. Gilbert, Michael Scott Burnett, Thomas Orrin Bennett
Life of this patent
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AssigneeAcushnet Company
InventorsPeter J. Gilbert, Michael Scott Burnett, Thomas Orrin Bennett
Estimating the term…
Forged cavity back iron-type clubs and oversize clubs are disclosed. These forged clubs have thin, durable hitting face and relatively large cavity volumes. These clubs have high rotational moments of inertia to minimize distance and accuracy penalties associated with off-center hits. Long irons with hitting face of about 0.100 inch thick are achievable by the present invention. Also disclosed are forged irons made from stainless steels and annealed to achieve the desired hardness and ductility. Further, an interchangeable pin suitable for use in the manufacture of any of a set of iron-type clubs without re-tooling is disclosed. The pin is sized and configured to fit within a through-bore such that an adhesive such as a flexible epoxy may be placed within the gaps to provide a vibration dampening effect.
A golf club head comprising a hosel configured to receive a club shaft and a bore extending from the hosel to a sole of the club head and a shoulder disposed at a lower end of the hosel and spaced from the sole, wherein the club head is made from forged stainless steel, wherein the density of a pin disposed in the bore between the lower end of the hosel and the sole is less than the density of the club head, wherein the club head includes a shaft axis and a center of gravity and the distance therebetween is between 37.6 mm and 37.8 mm, and wherein the bore includes an upper portion and a main portion and the upper portion is eccentrically located relative to the main portion.
A golf club head comprising:
A golf club head comprising:
Dependencies are inferred from the claim text.