Iron-type golf club heads with variable forward wall thickness dimensions

Abstract

A set of at least three iron-type golf club heads where each golf club head includes a forward wall having a front surface arranged for impacting a golf ball, a back surface disposed generally parallel to the front surface and a thickness dimension measured between the front and back surfaces. A rearward wall is spaced from the forward wall, and a pocket is defined between the back surface of the forward wall and an inner surface of the rearward wall. A weight member is disposed in the pocket. The forward wall thickness dimension of a first golf club head with a medium loft angle such as a six iron is greater than the forward wall thickness dimension of a second golf club head with a low loft angle such as a three iron but less than the forward wall thickness dimension of a third golf club head with a high loft angle such as a nine iron.

1 . A set of at least two iron-type cavity-back golf club heads, wherein:
 each golf club head includes a forward wall having a front surface arranged for impacting a golf ball, a back surface disposed generally parallel to the front surface and a thickness dimension measured between the front and back surfaces, a rearward wall spaced from said forward wall, said rearward wall has an inner surface and an outer surface, a pocket defined between the back surface of said forward wall and the inner surface of said rearward wall;   the forward wall thickness dimension of one of the golf club heads is greater than the forward wall thickness dimension of the other golf club head; and the back surface of said forward wall of each golf club head including a pair of recesses above said pocket.   
   
   
       2 . The set of at least two iron-type cavity-back golf club heads of  claim 1 , wherein each golf club head has a weight member disposed in said pocket. 
   
   
       3 . The set of at least two iron-type cavity-back golf club heads of  claim 2 , wherein said weight member in each golf club head has a first side surface adjacent the back surface of said front wall and a second side surface adjacent the inner surface of said rear wall. 
   
   
       4 . The set of at least two iron-type cavity-back golf club heads of  claim 3 , wherein:
 the first side surface of the weight member is a first distance away from the front surface of said front wall in said one golf club head;   the first side surface of the weight member is a second distance away from the front surface of said front wall in said other golf club head; and   said first distance is greater than said second distance.   
   
   
       5 . The set of at least two iron-type cavity-back golf club heads of  claim 4 , wherein:
 each golf club head has a center of gravity; and   the center of gravity is closer to the front surface of said front wall in said one golf club head than in said other golf club head.   
   
   
       6 . A set of at least first, second and third iron-type cavity-back golf club heads, wherein:
 each golf club head includes a forward wall having a front surface arranged for impacting a golf ball, a back surface disposed generally parallel to the front surface and a thickness dimension measured between the front and back surfaces, a rearward wall spaced from said forward wall, said rearward wall has an inner surface and an outer surface, a pocket defined between the back surface of said forward wall and the inner surface of said rearward wall;   the forward wall thickness dimension of the first golf club head is greater than the forward wall thickness dimension of the second golf club head but less than the forward wall thickness dimension of the third golf club head; and the back surface of said forward wall of each golf club head including a pair of recesses above said pocket.   
   
   
       7 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 6 , wherein each golf club head has a weight member disposed in said pocket. 
   
   
       8 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 7 , wherein said weight member in each golf club head has a first side surface adjacent the back surface of said front wall and a second side surface adjacent the inner surface of said rear wall. 
   
   
       9 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 8 , wherein:
 the first side surface of the weight member is a first distance away from the front surface of said front wall in said first golf club head;   the first side surface of the weight member is a second distance away from the front surface of said front wall in said second golf club head;   the first side surface of the weight member is a third distance away from the front surface of said front wall in said third golf club head; and   said first distance is greater than said second distance but less than said third distance.   
   
   
       10 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 9 , wherein:
 each golf club head has a center of gravity; and   the center of gravity is closer to the front surface of said front wall in said first golf club head than in said second golf club head but farther away from the front surface of said front wall than in said third golf club head.   
   
   
       11 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 10 , wherein said first golf club head has a medium loft angle, wherein said second golf club head has a low loft angle, and wherein said third golf club head has a high loft angle. 
   
   
       12 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 10 , wherein said first golf club head is a six iron, wherein said second golf club head is a three iron, and wherein said third golf club head is a nine iron. 
   
   
       13 . The set of at least two iron-type cavity-back golf club heads of  claim 1 , wherein the recesses in the back surface of said forward wall of said one golf club head each have depths that are equal to the depths of corresponding recesses in the back surface of said forward wall of said other golf club head. 
   
   
       14 . The set of at least first, second and third iron-type cavity-back golf club heads of  claim 6 , wherein the recesses in the back surface of said forward wall of said first golf club head each have depths that are equal to the depths of corresponding recesses in the back surface of said forward wall of said second and third golf club heads.