Golf club head and method of manufacture
First Claim
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1. A method of creating an iron-type golf club, comprising:
- a) forming a club head blank having a blank loft, a blank lie angle, and a blank head weight of 345-400 grams, wherein;
(i) the club head blank includes a body including a hosel, a heel portion, a sole portion, a toe portion, a top-line portion, a face portion, and a leading edge joining the face portion and the sole portion, wherein the sole portion extends rearwardly from the leading edge;
(ii) the club head blank includes an external sacrificial region having an ESR thickness, an ESR sole portion, an ESR face portion, and an ESR leading edge portion;
b) forming a finished club head having a finished club head weight of less than 310 grams by machining off an ESR removed mass from at least a portion of the external sacrificial region including at least a portion of the ESR sole portion, a portion of the ESR face portion, and a portion of the ESR leading edge portion, wherein;
(i) less than 70% of the ESR removed mass is removed from the ESR face portion;
(ii) at least 20% of the ESR removed mass is removed from the ESR sole portion; and
(iii) at least 50% of the ESR leading edge portion is machined to produce a finished leading edge radius.
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Abstract
An iron-type golf club and a method of creating the iron-type golf club including the steps of forming a club head blank having a blank loft, a blank head weight of 345-400 grams, and an external sacrificial region having an ESR thickness, an ESR sole portion, an ESR face portion, and an ESR leading edge portion. A finished club head is formed having a finished club head weight of less than 310 grams by machining off an ESR removed mass from at least a portion of the external sacrificial region including at least a portion of the ESR sole portion, a portion of the ESR face portion, and a portion of the ESR leading edge portion.
50 Citations
20 Claims
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1. A method of creating an iron-type golf club, comprising:
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a) forming a club head blank having a blank loft, a blank lie angle, and a blank head weight of 345-400 grams, wherein; (i) the club head blank includes a body including a hosel, a heel portion, a sole portion, a toe portion, a top-line portion, a face portion, and a leading edge joining the face portion and the sole portion, wherein the sole portion extends rearwardly from the leading edge; (ii) the club head blank includes an external sacrificial region having an ESR thickness, an ESR sole portion, an ESR face portion, and an ESR leading edge portion; b) forming a finished club head having a finished club head weight of less than 310 grams by machining off an ESR removed mass from at least a portion of the external sacrificial region including at least a portion of the ESR sole portion, a portion of the ESR face portion, and a portion of the ESR leading edge portion, wherein; (i) less than 70% of the ESR removed mass is removed from the ESR face portion; (ii) at least 20% of the ESR removed mass is removed from the ESR sole portion; and (iii) at least 50% of the ESR leading edge portion is machined to produce a finished leading edge radius. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification