| 摘要 |
PROBLEM TO BE SOLVED: To improve the vibration attenuation property of a racket. SOLUTION: A cut is formed toward the side of a grip from the center of a shaft tip joining the right and left frame parts of a throat part to divide at least a part of a shaft part to the right and left from its tip to form a gap for attenuating vibration. On the side of a grip end, a connection part without cutting is provided in the rang of length 20 mm to 200 mm. This cutting has a width of 1 to 10 mm and a length of 20 to 200 mm. The opening side of this cutting is filled with vibration attenuation material and a gap is formed between with the deep end of the cutting. |
