Patent ID: 6435977
Filing Date: 2002-08-20
Classification: A63B,B21J,B21K,C22F,C23F

Abstract:
A set of wood golf club heads comprising:a first plurality of drivers comprising drivers with a loft angle of ten degrees or greater, each of the first plurality of drivers having a body with a crown, a sole and a striking plate, the striking plate having a plurality of regions of different thickness the plurality of regions comprising a central region with a thickness in the range of 0.093 inch to 0.105 inch, the central region having greatest thickness of the plurality of regions of the striking plate; and a second plurality of drivers comprising drivers with a loft angle of less than ten degrees, each of the second plurality of drivers having a body with a crown, a sole and a striking plate,the striking plate having a plurality of regions of different thickness the plurality of regions comprising a central region with a thickness greater than the thickness of the central region of the striking plate of each of the first plurality of drivers; wherein each of the first plurality of drivers and each of the second plurality of drivers have a coefficient of restitution that ranges from 0.80 to 0.93 under standard USGA conditions.