Balanced set of iron type golf clubs

Abstract

A set of a plurality of at least a combination of three golf clubs of progressive lofts that are matched to provide identical swing characteristics; each of the golf clubs including a club head, a shaft and a grip at the upper end of said shaft; each club of the combination characterized by having an essentially identically located, computer designed center of gravity; each club being further defined by the shaft having an equal length, having an identical swing weight, identical grip weight and an identical club head weight.

1 . A method of making a set of matched golf clubs in combinations of at least three matched golf clubs; each club having a club head, a shaft and grip to provide identical swing characteristics; said club head having a means for connection to a shaft, a frontal ball striking face, a top surface, bottom surface, heel, toe and rear surface defining a rear weight and cavity formed therein, comprising the steps of:
 determining the precise location of the center of gravity relative to said frontal ball striking face of each of the club heads of a given combination of club heads of said set using a computer aided design program to insure said center of gravity is in the same relative position in each club head;   measuring the weight of each of said club heads and adjusting the weight of each to insure the weight is the same;   matching the length of the shaft of each club whereby the length is the same; and,   attaching said shaft to said club head whereby each club has an identical length, identical weight, identical swing weight and identical center of gravity location.   
     
     
         2 . The method of  claim 1  wherein the location of said center of gravity and said club head weight are adjusted by precisely adjusting the weight of said club head in accordance with parameters determined by said computer aided design. 
     
     
         3 . The method of  claim 2  further defined by adjusting the X-axis, and the Y-axis of the location of said center of gravity in sequential steps. 
     
     
         4 . The method of  claim 3  further including the step of adjustably positioning the x-axis of said center of gravity in a heel to toe direction by angularly varying the thickness of said rear weight of said club head in a heel to toe direction such that an increase of the angle of thickness locates the x-axis closer toward said toe and a decrease of the angle of thickness locates the x-axis closer toward said heel of said club head. 
     
     
         5 . The method of  claim 4  further including the step of adjustably positioning the y-axis of said center of gravity in a top to bottom direction by adjusting the height of said rear weight between said top surface and said bottom surface such that an increase in height of said rear weight locates the y-axis closer toward said top surface and a decrease in height of said rear weight locates the y-axis closer toward said bottom of said club head. 
     
     
         6 . The method of  claim 5  wherein the location of the z-axis of said center of gravity is a result of the position of the x-axis and y-axis. 
     
     
         7 . A method of adjusting the position of the center of gravity of a golf club head having a means for connection to a shaft, a frontal ball striking face, a top surface, bottom surface, heel, toe and rear surface defining a rear weight and cavity formed therein comprising the steps of:
 adjustably positioning the x-axis of said center of gravity in a heel to toe direction by angularly varying the thickness of said rear weight of said club head in a heel to toe direction such that an increase of the angle of thickness locates the x-axis closer toward said toe and a decrease of the angle of thickness locates the x-axis closer toward said heel of said club head;   and, adjustably positioning the y-axis of said center of gravity in a top to bottom direction by adjusting the height of said rear weight between said top surface and said bottom surface such that an increase in height of said rear weight locates the y-axis closer toward said top surface and a decrease in height of said rear weight locates the y-axis closer toward said bottom of said club head.   
     
     
         8 . The method of  claim 7  further including the step of varying the size of said cavity to further ad just the weight of said club head and said position of said center of gravity. 
     
     
         9 . A combination of a plurality of at least three golf clubs of progressive lofts that are matched to provide identical swing characteristics; each of the golf clubs including a club head with heel, toe, top and bottom surface, a ball striking face, a shaft and a grip at the upper end of said shaft; each club of said combination characterized by having a computer designed center of gravity located equidistant from said ball striking face; each club being further defined by the shaft having an equal length; having an identical swing weight, an identical grip weight and an identical club head weight. 
     
     
         10 . The combination of golf clubs of  claim 9  wherein said center of gravity is defined by the location of a rear weight behind said ball striking face. 
     
     
         11 . The combination of golf clubs of  claim 10  wherein said rear weight is further defined by an angular rear face progressively thicker toward said heel of said club head. 
     
     
         12 . The combination of golf clubs of  claim 10  wherein said rear weight is further defined by a variable height between said top and bottom surface. 
     
     
         13 . The combination of golf clubs of  claim 10  wherein said rear weight is angular in an x-axis direction between said heel and toe and said rear weight is variable in height between said top and bottom surface.