Anodized aluminum golf club head and method of manufacturing same
AssigneeA. R. Wilfley & Sons, Inc.
InventorGeorge A. Calboreanu
Life of this patent
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Abstract
An aluminum alloy product of extremely high hardness is conformable for use in the manufacture of various products, such as, golf clubs and pump partshaving a body or first layer of an aluminum alloy treated by successive precipitation hardening and reverse quenching to produce a hardness exceeding 140 HBN, and an outer alumina layer or surface coating is applied by hard-anodizing to a predetermined thickness on the first layer and being of even greater hardness than the first layer.
Claims9
A golf club head comprising a hollow body composed of an aluminum alloy, said body having a ball-striking face, and an outer layer coated to and covering at least said ball-striking face, and wherein said outer layer is composed of a hard-anodized alumina.
A golf club head comprising a hollow body composed or an aluminum alloy, said body having internal and external surfaces and a ball-striking face on said external surface, and an outer layer coated to said external surface of said body, said outer layer being composed of a hard-anodized alumina of a greater hardness than said body.
Dependencies are inferred from the claim text.