Patent ID: 6379263
Filing Date: 2002-04-30
Classification: A63B,Y10T

Abstract:
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.