Set of golf clubs

Abstract

A set of golf clubs of the “iron” type, each club having a head, said head having a rear face, said rear face having a cavity delimited by walls, namely at least one lower wall forming the sole and an upper wall, said upper wall having several faces, namely a rear face, an upper face, a lower face facing the cavity and lateral faces, in which several clubs of said set have a head which has at least one recess made in the upper wall and opening onto a single face of said upper wall, away from the upper and lower faces, and wherein, the volume and/or the position inside the upper wall of said at least one recess varies from one club to another within said set, so that the position of the center of gravity of each head varies from one club to another.

1 . A set of golf clubs of the “iron” type, each club having a head, said head having a rear face, said rear face having a cavity delimited by walls, namely at least one lower wall forming the sole and an upper wall, said upper wall having several faces, namely a rear face, an upper face, a lower face facing the cavity and lateral faces, in which several clubs of said set have a head which has at least one recess made in the upper wall and opening onto a single face of said upper wall, away from the upper and lower faces, and wherein, the volume and/or the position inside said upper wall of said at least one recess varies from one club to another within said set, so that the position of the center of gravity of each head varies from one club to another.  
     
     
         2 . The set of golf clubs as claimed in  claim 1 , wherein the recess opens onto the rear face of the upper wall.  
     
     
         3 . The set of golf clubs as claimed in  claim 1 , wherein the recess opens onto a lateral face of the upper wall.  
     
     
         4 . The set of golf clubs as claimed in  claim 3 , wherein the recess opens onto the lateral face of the upper wall located at the toe side of the head.  
     
     
         5 . The set of golf clubs as claimed in  claim 2 , wherein the recess is elongate in the main direction of the upper wall.  
     
     
         6 . The set of golf clubs as claimed in  claim 2  or  3 , wherein the recess is cylindrical.  
     
     
         7 . The set of golf clubs as claimed in  claim 1 , wherein the recess is filled with a low-density material, such as a polyurethane foam.  
     
     
         8 . The set of golf clubs as claimed in  claim 1 , wherein the volume of the recess represents between 0.4% and 5% of the volume of the head.  
     
     
         9 . The set of golf clubs as claimed in  claim 1 , wherein the distance separating the recess or recesses from the hosel increases from the long irons, that is to say the ones with low numbers, to the short irons, that is to say the ones with high numbers.  
     
     
         10 . The set of golf clubs as claimed in  claim 1 , wherein the distance separating the recess or recesses from the hosel decreases from the long irons, that is to say the ones with low numbers, to the short irons, that is to say the ones with high numbers.  
     
     
         11 . The set of golf clubs as claimed in  claim 1 , wherein the volume of all the recesses decreases from the long irons to the short irons.  
     
     
         12 . The set of golf clubs as claimed in  claim 1 , wherein the number of recesses decreases from the long irons to the short irons.  
     
     
         13 . The set of golf clubs as claimed in  claim 1 , wherein the distance separating the recess or recesses from the upper face of the upper wall varies from one club to another.