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US 10,238,931 B2Granted
Golf club head manufacturing method
AssigneeCallaway Golf Company
InventorsIrina Ivanova, Bradley C. Rice
Life of this patent
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Abstract
Methods of bifurcating the material properties of golf club heads, and wedges in particular, are disclosed herein. The methods of the present invention preserve the bendability and feel of certain parts of the club heads, such as hosel regions, while selectively hardening and increasing the durability of other features, such as scorelines and texturing on the face.
Claims6
A method comprising the steps of:
- manufacturing from a first, steel material a wedge-type golf club head comprising a top portion, a sole portion, a rear portion, a face, and a hosel;
- masking a portion of the hosel with a layer of clay material that is at least 0.020 inch thick;
- processing the face;
- hardening the head;
- removing the layer of clay material from the hosel;
- applying a groove to a transition region proximate the hosel;
- and
- finishing the head,
- wherein the step of removing the second material from the hosel occurs after the step of hardening the head,
- wherein the step of processing the face is selected from the group of steps consisting of polishing, texturing, and adding scorelines, and
- wherein the step of hardening the head comprises at least one process selected from the group consisting of carburization, nitriding, carbonitriding, nitrocarburization, quenching, flame hardening, and tempering.
8 more elements
Dependencies are inferred from the claim text.