Racket frame

Abstract

A racket frame has a head frame, a triangular neck, and a handle. The head frame is oval-shaped and has a bottom end, and an arc opening defined at the bottom end of the head frame. The triangular neck is attached to the bottom end of the head frame and has a bridge and two arms. The bridge is made of fiber carbon composite and received inside the arc opening of the head frame. The two arms respectively attach to two distal ends of the bridge and further extend to abut the head frame. The handle is made of carbon composite and attaches to the triangular neck. By selectively using carbon fiber composite at the bridge and the handle, weight of the racket frame is minimized, durability of the racket is high and material cost of the racket frame is acceptable.

1 . A racket frame comprising: 
 a head frame being oval-shaped and having a bottom end and two arc ends to define an arc opening at the bottom end of the head frame;    a triangular neck attached to the bottom end of the head frame and comprising 
 a bridge made of fiber carbon composite, received inside the arc opening of the head frame and having two distal ends and two side braces respectively formed at the two distal ends of the bridge  
 two arms respectively having an abutting end attached to a corresponding one of the two side braces of the bridge and a free end;  
 a handle attached to the two arms of the triangular neck;  
 wherein, the head frame, the. arms of the triangular neck and the handle are respectively made of at least two materials selected from the group consisting of fiber carbon composite, aluminum alloy, plastic, and wood.  
   
   
   
       2 . The racket frame as claimed in  claim 1 , wherein the handle is made of carbon fiber composite.  
   
   
       3 . The racket frame as claimed in  claim 1 ,  
     wherein the two arc ends of the head frame define a length of the arc opening at the head frame and are preferably and respectively at a 5 o'clock position and a 7 o'clock position in comparison with clock orientation.  
   
   
       4 . The racket frame as claimed in  claim 1 ,  
     wherein each of the two side braces has 
 an upper end wedging into a corresponding one of the two arc ends to complete the head frame; and  
 a lower end wedging into the abutting end on a corresponding one of the arms.  
 
   
   
       5 . The racket frame as claimed in  claim 2 , wherein the two arms are made of aluminum alloy tubes.  
   
   
       6 . (canceled)  
   
   
       7 . The racket frame as claimed in  claim 5 ,  
     wherein the head frame is made of aluminum alloy tube.  
   
   
       8 . The racket frame as claimed in  claim 1 , wherein the handle and the arms are integrally made of two aluminum alloy tubes; and 
 the handle further has a plastic casing surrounding the two aluminum alloy tubes.    
   
   
       9 . The racket frame as claimed in  claim 1 , wherein the racket frame is combined by gluing.  
   
   
       10 . The racket frame as claimed in  claim 1 , wherein the racket frame is combined by thermal setting in a mold.