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Golf club head with tungsten alloy sole component

Golf club head with tungsten alloy sole component description/claims

The Present Application claims priority to U.S. Patent Application No. 60/970,457, filed Sep. 6, 2007.

Not Applicable

1. Field of the Invention

The present invention relates to a golf club head with a sole component entirely composed of a tungsten alloy material.

2. Description of the Related Art

Present day golf clubs are typically composed of titanium or steel, and either cast or forged. Various patents have disclosed the use of multiple material golf club heads, generally combining a metal with a non-metal. Various patents have disclosed the use of metal injection molding for golf clubs.

Sanford et al., U.S. Pat. No. 5,665,014, for a Metal Golf Club Head And Method Of Manufacture, discloses a golf club head with two components with at least one of the components composed of a metal injection molded material.

Gressel et al., U.S. Pat. No. 6,478,842, for a Preparation Of Articles Using Metal Injection Molding, discloses an entire golf club head composed of a metal injection molded material having a stainless steel and tungsten alloy composition.

Gressel et al, U.S. Pat. No. 6,669,898, for a Preparation Of Articles Using Metal Injection Molding, discloses forming an entire golf club head composed of a metal injection molded material having a stainless steel and tungsten alloy composition.

Zhang et al., U.S. Pat. No. 6,767,418, for a TI-ZR Type Alloy And Medical Appliance Formed Thereof discloses a titanium-zirconium alloy that may be used for golf club components.

Sakata et al., U.S. Pat. No. 6,350,407, for a Process For Producing Sintered Product, discloses a process for metal injection molding.

LaSalle et al., U.S. Pat. No. 6,322,746, for a Co-Sintering Of Similar Materials, discloses a process of fusing two dissimilar material parts through use of co-sintering including a golf putter.

Takahashi et al., U.S. Pat. No. 6,027,686, for a Method Of Manufacturing Sintered Compact, discloses sintering a green body formed by metal injection molding.

LaSalle et al., U.S. Pat. No. 5,989,493, for a Net Shape Hastelloy X Made By Metal Injection Molding Using An Aqueous Binder, discloses metal injecting a Hastelloy X powder.

Zedalis et al., U.S. Pat. No. 5,985,208, for a Process For Debinding And Sintering Metal Injection Molded Parts Made With An Aqueous Binder, discloses metal injection molding a 17-4PH stainless steel alloy.

Takahashi et al., U.S. Pat. No. 5,911,102, for a Method Of Manufacturing Sintered Compact, discloses sintering a green body formed by metal injection molding.

Numerous techniques have been used for weighting golf club heads in order to gain better performance. In persimmon wood club heads, weights were attached to the sole in order to lower the center of gravity. The first metal woods had sufficient weight, however, the weight distribution deterred slightly from performance. The refinement of hollow metal woods with weighting on the sole improved upon the performance of these clubs. An example of such woods were the GREAT BIG BERTHA® HAWK EYE® drivers and fairway woods, developed by the Callaway Golf Company of Carlsbad, Calif., that used a tungsten screw in the sole of each titanium club head body to vary the weight of the golf club head.

Another example is set forth in Helmstetter et al., U.S. Pat. No. 6,364,788, for a Weighting System For A Golf Club Head, which discloses using a bismuth material within an internal cavity to add mass to a golf club head, particularly a fairway wood.

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