Spiral-spring type driving unit

Details Spiral-spring type driving unit Spiral-spring type driving unit

1987-10-14

1989-06-27

Yu, Mickey

Amusement devices: toys

Rolling or tumbling

Including intrinsic motive power means for propulsion

185 39, 185DIG1, A63H 1700, A63H 2924, F03G 108

Patent

active

048425672

ABSTRACT:
A spiral-spring type driving unit is disclosed, including a gear train formed essentially of a gear housing, three rotary shafts and six gears; and a spiral spring serves as a prime mover of a toy vehicle. The spiral spring of the driving unit is wound up so as to store a sufficient energy therein when the toy vehicle is moved backward by a relatively short distance by an external force. The toy vehicle can move forward by a relatively long distance under the influence of a resilient force of the thus tightened spiral spring when the spiral spring is unwound. The winding-up operation of the spiral spring is conducted by the means of a ring-like external gear serving as an idle gear in the gear train of the driving unit. y

REFERENCES:
patent: 4463831 (1984-08-01), Wakase
patent: 4469197 (1984-09-01), Minoru
patent: 4582171 (1986-08-01), Jezierski

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