| 摘要 |
<p>A toy comprising a motor assembly mounted on an elevated support from which a toy aircraft is suspended by a flexible cable. The cable has a coiled wire sheath having one end connected to the support and the other to the aircraft. The cable hangs freely through a vertical passage in a bearing cup. A flexible shaft extends through the sheath from a driven connection from the motor to a driving connection with the propeller drive shaft. The drive shaft can be made up of a coiled spring encasing elastomeric cord serving to give it body and modify its resilience. The motor assembly may include an electric motor driven from a source of power through a speed control device and the speed of the assembly stepped up by a transmission of drive pulleys or gears. The aircraft is balanced by the way the flexible cable is connected to it and by downwardly and rearwardly angled tail wings to provide lift. When the propeller is actuated the aircraft describes orbits controlled by the cable operating in the bearing cup.</p> |
