Patent ID: 6935967
Filing Date: 2005-08-30
Classification: A63B

Abstract:
1. A set of blade-iron type golf clubs comprising a plurality of short irons, a plurality of mid-irons and a plurality of long irons, each of the plurality of short irons, mid-irons and long irons comprising: a golf club head comprising a body forged of a metal material, the body having a top portion, a bottom portion, a toe portion, a heel portion, a front striking face and a rear surface, the rear surface consisting essentially of a first portion, a second portion, a third portion and a fourth portion, the first portion positioned adjacent to the bottom portion of the body and defining the thickest portion of the body, the first portion having a substantially linear upper edge extending between the toe portion and the heel portion, the second portion positioned adjacent the first portion and having an upper edge convex relative to the bottom portion and extending between the heel portion and the toe portion and extending vertically an impact area of the striking face, the second portion thinner than the first portion, the third portion positioned adjacent the second portion and thinner than the second portion, the fourth portion positioned adjacent the third portion and the top portion, the fourth portion the thinnest portion of the body; wherein the height and thickness of the second portion of the body of each of the plurality of short irons, mid-irons and long irons increases through the set of blade-iron type golf clubs from a lowest number of the plurality of long irons to a highest number of the plurality of short irons; wherein the center of gravity of the golf club head of each of the plurality of short irons, mid-irons and long irons is raised from the bottom portion to the top portion through the set of blade-iron type golf clubs from the lowest number of the plurality of long irons to the highest number of the plurality of short irons; and wherein the mass behind the impact area of the golf club head of each of the plurality of short irons, mid-irons and long irons is increased from the bottom portion to the top portion through the set of blade-iron type golf clubs from the lowest number of the plurality of long irons to the highest number of the plurality of short irons.