| 摘要 |
<p>A throw and fly device used as a toy, for recreational purposes and as sporting equipment. In a device constructed according to the present invention the base-part (1), the axle (2) and the flange (3) form a spool for the string (4). When thrown the device glides and the string (4) unwinds from the said spool accelerating the speed of rotation of the device. The energy thereby stored in the form of rotational movement returns the device back to the user and the device is ready for a new flight.</p> |
