Multi-material golf club head

Abstract

A multi-material golf club head having an improved performance is disclosed. More specifically, the present invention relates to a multi-material golf club head having a metallic frontal portion and a lightweight aft portion with an addition of an internal ribbon support member. The lightweight aft portion could be formed of a multi-layered sandwich material with at least one layer having low damping properties. The lightweight aft portion may be formed out of a lightweight crown sub-shell and a lightweight sole sub-shell, both of which combine to receive a weighting system.

What is claimed is: 
     
         1 . A golf club head comprising:
 a frontal striking face portion located at a frontal portion of said golf club head, and   an aft body portion, attached to a rear of said striking face portion;   wherein the aft body portion further comprises a lightweight shell,   wherein said golf club head further comprises a weighting system sandwiching a rear portion of said lightweight shell, said weighting system further comprises;
 an inner weight housing having a through bore, 
 an outer weight housing having an internally facing protrusion adapted to engage said through bore, and 
 a high-density weight adapted to engage said internally facing protrusion of said outer weight housing, 
 wherein at least a portion of an external surface of said internal weight housing mates with at least a portion of an internal surface of said lightweight shell, 
 wherein at least a portion of an internal surface of said external weight housing mates with at least a portion of an external surface of said lightweight shell, and 
 wherein no portion of said high-density weight engages said inner weight housing. 
   
     
     
         2 . The golf club head of  claim 1 , wherein said high-density weight further comprises a male threaded fastener, and
 wherein said internally facing protrusion further comprises an internal female threaded bore, and   wherein said male threaded fastener of said high-density weight only engages said internal female threaded bore of said internally facing protrusion.   
     
     
         3 . The golf club head of  claim 2 , wherein said protrusion of said outer weight housing is bonded to said through bore of said inner weight housing via an adhesive. 
     
     
         4 . The golf club head of  claim 1 , wherein said outer weight housing further comprises a plurality of two or more stabilizing rods adapted to engage a plurality of two or more receptacles. 
     
     
         5 . The golf club head of  claim 4 , wherein said plurality of two or more stabilizing rods work with said plurality of two or more receptacle to prohibit a rotation of said inner weight housing from said outer weight housing. 
     
     
         6 . The golf club head of  claim 1 , wherein said internal weight housing further comprises an H shaped internal ribbing structure. 
     
     
         7 . The golf club head of  claim 6 , wherein said H shaped internal ribbing structure further comprises;
 a toe side vertical rib,   a heel side vertical rib, and   a horizontal rib connecting said toe side vertical rib to said heel side vertical rib.   
     
     
         8 . The golf club head of  claim 7 , wherein both said toe side vertical rib and said heel side vertical rib have the same height. 
     
     
         9 . The golf club head of  claim 7 , wherein said toe side vertical rib and said heel side vertical rib have different heights. 
     
     
         10 . The golf club head of  claim 7 , wherein said toe side vertical rib has a height of between about 29.0 mm and about 33.0 mm. 
     
     
         11 . The golf club head of  claim 10 , wherein said horizontal rib has a distance of between about 21.0 mm and about 25.0 mm. 
     
     
         12 . A golf club head comprising:
 a frontal striking face portion located at a frontal portion of said golf club head, and   an aft body portion, attached to a rear of said striking face portion;   wherein the aft body portion further comprises a lightweight shell,   wherein said golf club head further comprises a weighting system sandwiching a rear portion of said lightweight shell, said weighting system further comprises;
 an inner weight housing having a through bore, 
 an outer weight housing having an internally facing protrusion adapted to engage said through bore, and 
 a high-density weight adapted to engage said internally facing protrusion of said outer weight housing, 
 wherein no portion of said high-density weight engages said inner weight housing, and 
 wherein said inner weight housing further comprises an H shaped internal ribbing structure. 
   
     
     
         13 . The golf club head of  claim 12 , wherein said H shaped internal ribbing structure further comprises;
 a toe side vertical rib,   a heel side vertical rib, and   a horizontal rib connecting said toe side vertical rib to said heel side vertical rib.   
     
     
         14 . The golf club head of  claim 13 , wherein both said toe side vertical rib and said heel side vertical rib have the same height. 
     
     
         15 . The golf club head of  claim 13 , wherein said toe side vertical rib and said heel side vertical rib have different heights. 
     
     
         16 . The golf club head of  claim 13 , wherein said toe side vertical rib has a height of between about 29.0 mm and about 33.0 mm. 
     
     
         17 . The golf club head of  claim 16 , wherein said horizontal rib has a distance of between about 21.0 mm and about 25.0 mm. 
     
     
         18 . The golf club head of  claim 12 , wherein said protrusion of said outer weight housing is bonded to said through bore of said inner weight housing via an adhesive. 
     
     
         19 . The golf club head of  claim 18 , wherein no portion of said inner weight housing is threaded. 
     
     
         20 . The golf club head of  claim 19 , wherein said outer weight housing further comprises a plurality of two or more stabilizing rods adapted to engage a plurality of two or more receptacles.