Golf club head

Abstract

Disclosed herein is an iron-type golf club head that includes a body, made of a first material having a first density The body has a sole portion that includes an internal shelf. The iron-type golf club head also comprises a weight located within the internal cavity and at least partially seated on the internal shelf. The iron-type golf club head further comprises a filler material located within the internal cavity. The internal cavity has an internal cavity volume ranging between 40 cc to 55 cc.

1 . An iron-type golf club head, comprising:
 a body, made of a first material having a first density, wherein the body comprises:
 a heel portion; 
 a toe portion; 
 a sole portion, comprising an internal shelf, 
 a top portion; and 
 a rear portion, comprising a rear wall extending from the sole portion to the top portion; 
 a front portion, comprising a strike face with a geometric center; 
 a weight, made of a second material having a second density greater than the first density, at least partially seated on the internal shelf and configured such that no portion of the weight defines an exterior surface of the golf club head, and the weight does not contact the strike face; 
 an internal cavity, having an internal cavity volume, defined by the sole portion, the top portion, the front portion, and the rear portion; and 
 a filler material, located within the internal cavity; 
 wherein: 
 the golf club head has an external club head volume ranging between 40 cc to 55 cc; 
 the top portion has a maximum topline width Wtopline that is 5.0-9.0 mm; 
 the golf club head has a blade length (LB); 
 the weight has a weight height (HW), a weight depth (DW), a weight length (LW) that is greater than the weight height (HW) and the weight depth (DW), and the weight length (LW) is at least 35% of the blade length (LB); 
 the second density is least 12 g/cc and the weight has a mass of at least 10 grams; 
 the internal cavity has a topline-adjacent cavity depth proximate the top portion that is no more than 6 mm; 
 a midplane is located halfway between a maximum toe height and a ground plane when the golf club head is in an address position, the internal cavity extends below the midplane and above the midplane, and above the midplane the internal cavity comprises:
 an above midplane maximum front-to-back cavity depth that is no more than 13 mm; and 
 an above midplane minimum front-to-back cavity depth that is less than the above midplane maximum front-to-back cavity depth; and 
 
 the filler material extends above the midplane and below the midplane and below a portion of the weight. 
   
     
     
         2 . The iron-type golf club head of  claim 1 , wherein the above midplane maximum front-to-back cavity depth is no more than 12 mm, the filler material is an elastomer material, and the weight length (LW) is at least four times the weight depth (DW). 
     
     
         3 . The iron-type golf club head of  claim 2 , wherein a ratio of the internal cavity volume to the external club head volume is at least 0.14. 
     
     
         4 . The iron-type golf club head of  claim 3 , wherein the weight length (LW) is at least five times the weight depth (DW), and the weight length (LW) is at least four times the weight height (HW). 
     
     
         5 . The iron-type golf club head of  claim 4 , wherein the ratio of the internal cavity volume to the external club head volume is at least 0.22. 
     
     
         6 . The iron-type golf club head of  claim 5 , wherein the volume of the internal cavity is no more than 20 cc. 
     
     
         7 . The iron-type golf club head of  claim 6 , wherein an offset, in a front-to-rear direction, between a forwardmost portion of a hosel and a leading edge of the strike face is less than 4.0 mm, the strike face comprises a strike face material different than the first material, and the strike face has a face maximum thickness Tfacemax. 
     
     
         8 . The iron-type golf club head of  claim 7 , wherein a maximum weight height elevation (HWT) of the weight is less than a geometric center height (HGC) of the geometric center of the strike face, and the ratio of the internal cavity volume to the external club head volume is no more than 0.385. 
     
     
         9 . The iron-type golf club head of  claim 8 , wherein the rear wall, above the midplane of the golf club head and adjacent to the internal cavity, has a rear wall thickness Trear less than the face maximum thickness Tfacemax. 
     
     
         10 . The iron-type golf club head of  claim 9 , wherein the weight length (LW) is less than 65% of the blade length (LB), and the blade length (LB) is 73-83 mm. 
     
     
         11 . The iron-type golf club head of  claim 10 , wherein the filler material has a first thickness at a location above the midplane, the filler material has a second thickness adjacent the weight and different than the first thickness, and the filler material has a third thickness located below the first thickness and above the second thickness, wherein the third thickness is greater than the second thickness, and the third thickness is greater than the first thickness. 
     
     
         12 . The iron-type golf club head of  claim 11 , wherein the external club head volume is 45-55 cc, and the golf club head has a center of gravity located at a Z-up elevation of 17.9-20 mm above the ground plane. 
     
     
         13 . The iron-type golf club head of  claim 12 , wherein the weight height (HW) is 4-6 mm, the weight depth (DW) is 4-6 mm, the weight length (LW) is 30-50 mm, and the rear wall thickness Trear, above the midplane of the golf club head and adjacent to the internal cavity, is less than 2 mm. 
     
     
         14 . The iron-type golf club head of  claim 12 , wherein a cross-sectional shape of the weight is constant along a length (LW) of the weight and the second density is least 14 g/cc, and the maximum weight height elevation (HWT) of the weight is less than the Z-up elevation. 
     
     
         15 . The iron-type golf club head of  claim 12 , wherein the elastomer material comprises a silicone. 
     
     
         16 . The iron-type golf club head of  claim 6 , wherein the topline-adjacent cavity depth is no more than 4.5 mm, and the above midplane maximum front-to-back cavity depth is no more than 10 mm. 
     
     
         17 . The iron-type golf club head of  claim 6 , further including an injection port extending through the toe portion to the internal cavity, and a metallic plug sealing the injection port and having a plug mass of less than 15 grams. 
     
     
         18 . The iron-type golf club head of  claim 7 , wherein the strike face further comprises a sole wrap portion that defines a part of the sole portion, a portion of the sole wrap portion is welded to the sole portion at a location at least 4 mm rearward of a leading edge of the strike face and no more than 11 mm rearward of a leading edge of the strike face, a sole wrap thickness Tsolewrap of no more than 3.3 mm, a ratio of the sole wrap thickness Tsolewrap to the face maximum thickness Tfacemax is at least 0.40 and no more, and the blade length (LB) is 73-83 mm. 
     
     
         19 . The iron-type golf club head of  claim 18 , wherein the maximum topline width Wtopline is 5.7-6.5 mm, the external club head volume is 45-55 cc, the golf club head has a center of gravity located at a Z-up elevation of 17.9-20 mm above the ground plane, and a ratio of a topline thickness Ttopline to the face maximum thickness Tfacemax is between 0.4 and 1.0. 
     
     
         20 . The iron-type golf club head of  claim 18 , wherein a center of gravity of the weight is located toeward of the geometric center of the strike face. 
     
     
         21 - 30 . (canceled)