Racket frame

Abstract

A racket frame is constructed to include a body, the body having an endless head and a shaft extended from the endless head for the mounting of a grip, and two wooden strips fastened to the endless head of the body at two sides, the wooden strips taking about 5%˜70% of the volume of the racket frame.

What is claimed is:  
     
         1 . A racket frame for fastening with a grip to form a ball game racket, comprising: 
 a body, said body comprising an endless head and a shaft extended from said endless head for the mounting of the grip; and    a wooden strip fastened to one side of said endless head of said body,    the racket frame being made by:    putting an elongated wooden strip in a cavity of a die, and at the same time preparing multiple layers of resin-immersed fiber cloth and winding said multiple layers of rein-immersed fiber cloth into a tubular member having an axially extended receiving chamber and then putting said tubular member in the cavity of said die, and then applying a fluid into the receiving chamber of said tubular member by a predetermined pressure to expand said tubular member and to force the periphery of said tubular member into close contact with a periphery of said cavity, causing said tubular member to be formed into a racket frame body having an endless head and a shaft, which racket frame body joins the wooden strip and forms with the wooden strip the desired racket frame.    
     
     
         2 . The racket frame as defined in  claim 1 , wherein said wooden strip fastened to an outer surface of the endless head of said body.  
     
     
         3 . The racket frame as defined in  claim 2 , wherein said wooden strip includes two sections respectively fastened to the endless head of said body at two sides, the sections each having a rear end respectively extended to said shaft and a front end spaced from each other at a distance and connected to each other by a protective strip at a front side of the endless head of said body.  
     
     
         4 . The racket frame as defined in  claim 1 , wherein said wooden strip is fastened to an inner surface of the endless head of said body.  
     
     
         5 . The racket frame as defined in  claim 1 , wherein the wooden strip is polished after fastened to said body.  
     
     
         6 . The racket frame as defined in  claim 1 , wherein the resin used for said multiple layers of rein-immersed fiber cloth is selected from a group of resins including thermoplastic resin and thermosetting resin.  
     
     
         7 . The racket frame as defined in  claim 1 , wherein the fibers used for said rein-immersed fiber cloth is selected from a group of fibers including carbon fibers, glass fibers, boron fibers, and Kevlar fibers.  
     
     
         8 . The racket frame as defined in  claim 1  comprising a plurality of said wooden strips arranged into a stack fastened to the endless head of said body at one side.  
     
     
         9 . The racket frame as defined in  claim 1 , wherein said shaft comprises two ribs, said ribs each having one end terminating in said endless head and an opposite end merged in each other and end covered with a grip.  
     
     
         10 . The racket frame as defined in  claim 1 , wherein said wooden strip preferably takes about 5%˜70% of the volume of the racket frame.  
     
     
         11 . The racket frame as defined in  claim 1 , wherein said wooden strip preferably takes about 10%˜50% of the volume of the racket frame.  
     
     
         12 . The racket frame as defined in  claim 1 , wherein said wooden strip preferably has a thickness within 3˜5 mm.  
     
     
         13 . A racket frame for fastening with a grip to form a ball game racket, comprising: 
 a body, said body comprising an endless head and a shaft extended from said endless head for the mounting of the grip; and    a wooden strip fastened to one side of said endless head of said body;    wherein said wooden strip takes about 5%˜70% of the volume of the racket frame.    
     
     
         14 . The racket frame as defined in  claim 13 , wherein said wooden strip takes about 10%˜50% of the volume of the racket frame.  
     
     
         15 . The racket frame as defined in  claim 13 , wherein said wooden strip is fastened to an outer surface of the endless head of said body.  
     
     
         16 . The racket frame as defined in  claim 14 , wherein said wooden strip includes two sections respectively fastened to the endless head of said body at two sides, the sections each having a rear end respectively extended to said shaft and a front end spaced from each other at a distance and connected to each other by a protective strip at a front side of the endless head of said body.  
     
     
         17 . The racket frame as defined in  claim 13 , wherein said wooden strip is fastened to an inner surface of the endless head of said body.  
     
     
         18 . The racket frame as defined in  claim 13 , wherein said body is made from multiple layers of resin-immersed fiber cloth by winding.  
     
     
         19 . The racket frame as defined in  claim 18 , wherein the resin used for said multiple layers of rein-immersed fiber cloth is selected from a group of resins including thermoplastic resin and thermosetting resin.  
     
     
         20 . The racket frame as defined in  claim 18 , wherein the fibers used for said rein-immersed fiber cloth is selected from a group of fibers including carbon fibers, glass fibers, boron fibers, and Kevlar fibers.  
     
     
         21 . The racket frame as defined in  claim 13  comprising a plurality of said wooden strips arranged into a stack fastened to the endless head of said body at one side.  
     
     
         22 . The racket frame as defined in  claim 13 , wherein said wooden strip preferably has a thickness within 3˜5 mm.