Golf club head with a variable thickness face

Details Golf club head with a variable thickness face Golf club head with a variable thickness face

2005-08-01

2008-03-04

Hunter, Jr., Alvin A. (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S345000

Reexamination Certificate

active

07338388

ABSTRACT:
A a golf club head with a variable thickness face plate having a central thickened region surrounded by a transition region tapering from the central thickened region to a thinner peripheral region. The golf club head is made by locating a ball end mill revolving about an axis generally normal to the inner surface of the face plate at an initial location on a circumferential intersection between the outer edge of the central thickened region and a transition region. The inner surface of the face plate is machined by moving the revolving ball end mill in a radial direction outwardly toward and through the transition region and the peripheral region to machine the inner surface of the face plate creating a tool channel having a width as the ball end mill traverses the transition region and thereby vary the thickness of the face plate in the tool path. The ball end mill is then raised in a direction normal to the surface of the face plate and relocated to a subsequent location on the circumferential intersection adjacent to the previous tool channel. The steps of machining, raising and relocating the ball end mill are repeated until the end mill has traversed the entire circumference of the circumferential intersection. In preferred embodiments, the machining step may vary the thickness of the transition region along a variable path, which may be a straight line, a curved line, or any other suitable path.

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“Cutting Tool Selection Impacts the Outcome of Hard Metal Machining” by Mike MacArthur, Nov. 2003, viewed online Nov. 23, 2006 (http://www.moldmakingtechnology.com).

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