SPD club head

Abstract

A golf-club head has a super plastically shaped crown integrally including sidewalls and a hosel connection having a hosel attachment opening. A bottom plate is welded to the crown and allows solder leakage concentrating on the lower part of the head. A super plastically shaped striking face is welded to the crown. A hosel is welded to the crown at the hosel connection.

1 . A golf-club head comprising: 
 a. a super plastically shaped crown integrally including sidewalls and a hosel connection having a hosel attachment opening;    b. a bottom plate welded to the crown, wherein solder leakage concentrates on the lower part of the head;    c. a super plastically shaped striking face welded to the crown; and    d. a hosel welded to the crown at the hosel connection.    
   
   
       2 . The golf-club head of  claim 1  wherein the hosel attachment opening is round and receives a standard cylindrical hosel.  
   
   
       3 . The golf-club head of  claim 1  wherein the solder leakage is no more than three grams.  
   
   
       4 . The golf-club head of  claim 1  wherein the crown and sidewalls are super plastically integrally formed to include an arch at the hosel connection.  
   
   
       5 . The golf-club head of  claim 1  wherein the thickness of the bottom plate is greater than the sidewall plate thickness.  
   
   
       6 . The golf-club head of  claim 1  wherein the crown, bottom plate and striking face are titanium.  
   
   
       7 . The golf-club head of  claim 1  wherein the hosel attachment area of the crown terminates in a circumference matching the outside circumference of the protruding ring.