Patent ID: 7338389
Filing Date: 2008-03-04
Classification: A63B

Abstract:
1. An iron golf club head comprising: a periphery member composed of a first metal material having a density between 8 g/cm a central member disposed in the opening of the periphery member, the central member being composed of a non-metal material and having a volume percentage of the golf club head ranging from 25% to 75%, and a mass percentage of the golf club head ranging from 10% to 30%; and a face plate composed of a second metal material, the second metal material having a lower density than the first metal material, the face plate being mounted in the opening of the periphery member and disposed over the central member, the face plate having a thickness between 0.040 inch and 0.250 inch; wherein the club head has a moment of inertia Ixx through the center of gravity of at least 2600 g-cm