作者: John G. Maxim
DOI:
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摘要: An entertainment apparatus includes a chassis, support wheels rotatably secured to the back-wind spring powered motor mounted chassis and drivably connected at least one of wheels, so that is wound by rolling backward on locking mechanism including structure for releasibly against unwinding releasing deliver torque thereby rotate wheel accelerate across surface. The fulcrum having pivot connection member, lever pivotally member magnet certain distance from pivoting in first direction causes release actuate motor, second lock actuation, an actuating be hand oriented user relative field repels pivots when placed close magnet.