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US 2006/0223653 A1Published application
Golf driver having titanium alloy head and flexible shaft
AssigneeMacGregor Golf Company
InventorYasuhiro Iizuka
Life of this patent
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AssigneeMacGregor Golf Company
InventorYasuhiro Iizuka
Estimating the term…
A golf driver has a head which includes an alpha-beta titanium alloy body and a crown formed of a beta titanium plate which is thinner than the body and brazed to the body. The face of the club head comprises a variable-thickness beta titanium faceplate that is plasma welded to the body. Heat generated during the plasma welding causes the thin border region of the faceplate to become even more flexible to enhance the spacing action of the faceplate. Two weights are attached at the toe and heel, respectively, of the body to minimize twisting of the body during an off-center hit. Two additional weights are disposed in the sole of the body in locations causing the center of gravity to be displaced toward the heel and the back side of the club head. A graphite shaft of the driver has at least four sections of different stiffness, defining three bending points, to increase the flex action of the shaft and enable an oversized driver to return to an address position at the moment of impact.
A golf driver head comprising a body having a crown portion formed by a separate crown plate bonded at the top of the body, wherein the body comprises an alpha-beta titanium alloy, and the crown plate comprises a beta-titanium alloy which is thinner than a surrounding portion of the body to which it is bonded.
The golf driver head comprising a body and a titanium alloy faceplate bonded to a front side of the body by plasma welding along an outer periphery of the faceplate.
A golf driver head comprising a body having a crown portion formed by a separate crown plate brazed to a top portion of the body, wherein the body comprises an alpha-beta titanium alloy, and the crown plate comprises a beta-titanium alloy which is thinner than a surrounding portion of the body, and a titanium alloy faceplate bonded to a front side of the body by plasma welding along an outer periphery of the faceplate.
A golf driver comprising a head and a carbon shaft connected to the head, the shaft including four sections;
Dependencies are inferred from the claim text.