PURPOSE: To enable it mainly for a beginner to execute effective training and enough satisfactory feeling in competition by providing an weight, whose weight can be adjusted, in a tone generating means and generating a prescribed tone when the swinging speed is more than a certain fixed speed.
CONSTITUTION: For a comfortable tone racket, a tone generating device 1, for which an weight 2 matched to personal taste is built in, is built in a perforated part 6 in the grip of the racket. Without generating a projecting object in the surface of the racket, the weight balance of the racket can be inclined to the head side of a frame 3 so as to be effective for training to full swing the racket. Further, when the racket is swung around at the swinging speed more than the certain fixed speed or when the racket hits a ball, a comfortable tone is generated to just like the racket hits the ball. Accordingly, especially, when the beginner executes the training of a practice swing, etc., the feeling of the real competition can be given and the effective training can be executed. Even when the racket really hits the ball, it is preferable since the comfortable tone is effective for full swinging the racket.
| JP2005334160 | TENNIS RACKET |
| JP10057530 | RACKET FRAME |
| JP09010365 | RACKET FRAME |
Tousawa, Shinichi
Kikuchi, Minoru
