| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a racket frame having a good control performance, allowing a user to have a good hitting feeling and capable of demonstrating a sufficient control performance even when the ball is hit at an off-center position. <P>SOLUTION: The area of a hitting section 4 is 485 cm<SP>2</SP>or more and less than 550 cm<SP>2</SP>, the length M of a shaft part 6 is within a range of 0.268 or more and 0.352 or less times the overall length L, the length Ma of a throat area 5 is within a range of 0.05-0.147 times the overall length L, the minimum value of the surface outward width SWa is within a range of 12 mm or more and 18 mm or less, the surface inward width SWb of the throat section in the range showing the minimum value of the surface outward width SWa is 0.788 or more and 1.5 or less times the minimum value and (surface outward width YWa in the narrow width section of a yoke section 14)/(surface outward width YWae in the end of the yoke section 14) is 0.36 or more and 0.65 or less. <P>COPYRIGHT: (C)2010,JPO&INPIT |
