| 摘要 |
<p>The badminton racket is moulded from a carbonaceous fibre reinforced epoxy resin which is wrapped around a cone comprising a rigid tubular piece (51) which forms the shaft, a "cellophane" blow tube (57) e.g. of nylon, of small diameter which forms the head-frame, and "cellophane" blow tube (58) of larger diameter which forms the hand grip. The rigid tubular piece (51) consists of an elongated connection portion (52) located at one end and which at its other end may extend to an air inlet (53) through the larger diameter tube (58) in which it is provided with radial air discharge perforations (55). The small blow tube (57) is fastened at one end thereof to the connection portion (52) of the tubular piece 51 and is sealed tight at other end thereof. The cone wrapped windingly with resin impregnated carbonaceous fiber fabrics (60) is placed in a molding cavity to form a badminton racket under the air pressure within the tubes (57, 58), and heat. <IMAGE></p> |
