Multi-material golf club head

Abstract

A multi-material golf club head wherein the junction between the two different components made from different materials are seamlessly incorporated within existing visual cues of a golf club head is disclosed. More specifically, the present invention adjusts the design of the bond between the two different components to reflect the needs of the golf club head at the various visual cues around the perimeter of the golf club head.

What is claimed is: 
     
         1 . A golf club head comprising:
 a body portion further comprising;
 a main body chassis having an upper hosel opening having a first diameter,
 wherein said main body chassis forms a striking face portion that defined a forwardmost vertical plane, and 
 wherein said main body chassis further comprises a recess around 
 
 a perimeter of said main body chassis, 
   a crown portion having a secondary upper hosel opening having a second diameter,
 wherein said crown portion overlaps said body portion at said recess of said body portion to form a crown, and 
   an upper hosel component adapted to engage said secondary upper hosel opening,   wherein said crown portion is made from a first material having a first density and said body portion is made from a second material having a second density, and   wherein said first density is less than said second density.   
     
     
         2 . The golf club head of  claim 1 , wherein said second diameter is smaller than said first diameter. 
     
     
         3 . The golf club head of  claim 1 , wherein said upper hosel component further comprises;
 an upper hosel component base portion, and   an upper hosel component tip portion,   wherein said upper hosel component base portion has a width, at its widest portion, that is greater than said second diameter.   
     
     
         4 . The golf club head of  claim 3 , wherein said upper hosel component base portion further comprises one or more anti-rotation features, and
 wherein said crown portion further comprises one or more complimentary anti-rotation features,   wherein said one or more anti-rotation features and said one or more complimentary anti-rotation features combine to secure said upper hosel component to said crown.   
     
     
         5 . The golf club head of  claim 1 , wherein a forwardmost point of said crown portion is located less than about 17.5 mm away from said forwardmost vertical plane. 
     
     
         6 . The golf club head of  claim 5 , wherein said forwardmost point of said crown portion is located less than about 16.5 mm away from said forwardmost vertical plane. 
     
     
         7 . The golf club head of  claim 6 , wherein said forwardmost point of said crown portion is located less than about 15.5 mm away from said forwardmost vertical plane. 
     
     
         8 . The golf club head of  claim 1 , wherein said crown portion has a Hosel Portion Crown Transition Slope of less than about −0.036 over the first 22.5 mm of a hosel transition. 
     
     
         9 . The golf club head of  claim 8 , wherein said crown portion has a Hosel Portion Crown Transition Slope of less than about −0.038 over the first 22.5 mm of a hosel transition. 
     
     
         10 . The golf club head of  claim 9 , wherein said crown portion has a Hosel Portion Crown Transition Slope of less than about −0.045 over the first 22.5 mm of a hosel transition. 
     
     
         11 . The golf club head of  claim 1 , wherein said crown portion further comprises a hosel supporting region,
 said hosel supporting region further comprises;
 a hosel supporting region inner radial thickness, and 
 a hosel supporting region outer radial thickness,
 wherein said hosel supporting region inner radial thickness is greater than said hosel supporting region outer radial thickness. 
 
   
     
     
         12 . The golf club head of  claim 11 , wherein said hosel supporting region inner radial thickness is greater than about 1.50 mm, and
 wherein said hosel supporting region outer radial thickness is less than about 0.80 mm.   
     
     
         13 . The golf club head of  claim 12 , wherein said hosel supporting region inner radial thickness is greater than about 1.55 mm, and
 wherein said hosel supporting region outer radial thickness is less than about 0.70 mm.   
     
     
         14 . The golf club head of  claim 13 , wherein said hosel supporting region inner radial thickness is greater than about 1.60 mm, and
 wherein said hosel supporting region outer radial thickness is less than about 0.65 mm.   
     
     
         15 . A golf club head comprising:
 a body portion further comprising;
 a main body chassis having an upper hosel opening having a first diameter,
 wherein said main body chassis forms a striking face portion that defined a forwardmost vertical plane, and 
 wherein said main body chassis further comprises a recess around 
 
 a perimeter of said main body chassis, 
   a crown portion having a secondary upper hosel opening having a second diameter,
 wherein said crown portion overlaps said body portion at said recess of said body portion to form a crown, and 
   an upper hosel component adapted to engage said secondary upper hosel opening,   wherein said crown portion is made from a first material having a first density and said body portion is made from a second material having a second density, and   wherein a forwardmost point of said crown portion is located less than about 17.5 mm away from said forwardmost vertical plane.   
     
     
         16 . The golf club head of  claim 15 , wherein said forwardmost point of said crown portion is located less than about 16.5 mm away from said forwardmost vertical plane. 
     
     
         17 . The golf club head of  claim 16 , wherein said forwardmost point of said crown portion is located less than about 15.5 mm away from said forwardmost vertical plane. 
     
     
         18 . The golf club head of  claim 15 , wherein said crown portion further comprises a hosel supporting region,
 said hosel supporting region further comprises;
 a hosel supporting region inner radial thickness, and 
 a hosel supporting region outer radial thickness,
 wherein said hosel supporting region inner radial thickness is greater than said hosel supporting region outer radial thickness. 
 
   
     
     
         19 . The golf club head of  claim 18 , wherein said hosel supporting region inner radial thickness is greater than about 1.50 mm, and
 wherein said hosel supporting region outer radial thickness is less than about 0.80 mm.   
     
     
         20 . The golf club head of  claim 19 , wherein said hosel supporting region inner radial thickness is greater than about 1.55 mm, and
 wherein said hosel supporting region outer radial thickness is less than about 0.70 mm.