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US 6,379,263 B2Granted
Golf club and weighting system
AssigneeCallaway Golf Company
InventorsJoel B. Erickson, John G. Guard, James F. Dooley, M. Grace Hohn Pimentel, Thomas J. DiMarco
Life of this patent
Estimating the term…
Abstract
A golf club head having a defined internal cavity, and a golf club head containing a bi-material weight having a nonhomogeneous structure. A method to add the bi-material weight to the golf club entails heating, vibration and cooling to produce the nonhomogeneous structure.
Claims12
A golf club head comprising:
- a body having a face, a top wall, a bottom wall, a toe wall and a heel wall defining a rear main recess, the bottom wall having a rear flange that extends toward the top wall, the rear flange having an internal cavity that extends into the bottom wall, the internal cavity having an opening for access thereto and a volume of 5 cm3 to 25 cm3, the internal cavity defined by the heel wall, the toe wall, a floor wall portion of the bottom wall, a lower face thickness portion of the face, an upper face of the rear flange, a ceiling wall of the rear flange, and an inset wall of the rear flange;
- and
- a bi-metal material being disposed within the internal cavity, the bi-metal material comprising a first metal material and a second metal material the first metal material having a first density in the range of 12 g/cm3 to 20 g/cm3 and the second metal material having a second density in the range 6 g/cm3 to 14 g/cm3 wherein the second density is less than the first density and wherein the bi-metal material occupies 95% to 100% of the volume of the internal cavity.
An iron golf club head comprising:
- a body composed of a titanium material, the body having a face, a top wall, a bottom wall, a toe wall and a heel wall defining a rear main recess, the body also having an undercut recess that extends into at least one of the bottom wall, the top wall, the heel wall and the toe wall, the undercut recess openly exposed to the rear main recess, the bottom wall having a rear flange that extends toward the top wall, the rear flange having an internal cavity that extends into the bottom wall, the internal cavity having an opening for access thereto and a volume of 5 cm3 to 25 cm3;
- and
- a bi-metal material disposed within the internal cavity, the bi-metal material comprising a plurality of tungsten spheres within a bismuth-tin solder material, the bi-metal material occupying 95% to 100% of the volume of the internal cavity and having from 37% to 52% of the weight of the iron golf club head.
Dependencies are inferred from the claim text.