Spring drive

Details Spring drive Spring drive

1991-09-18

1993-01-05

Herrmann, Allan D.

Motors: spring, weight, or animal powered

Spring

With winding means

185DIG1, 446464, F03G 108

Patent

active

051762234

ABSTRACT:
The present invention is concerns with a spring drive used as a driving power source for a moving toy. The spring drive has a windup pinion of which at least the top of one end is formed at its rotation axis as a small diameter end having a diameter smaller than the diameter of the body thereof, and a supporting member having a supporting surface for supporting the windup pinion at the small diameter end. The windup pinion is freely rotatively supported at its small diameter end on the supporting surface of the supporting member, the friction force acting against the rotation of the pinion, is decreased.

REFERENCES:
patent: 4241534 (1980-12-01), Larsson et al.
patent: 4463831 (1984-08-01), Wakase
patent: 4623039 (1986-11-01), Itoh
patent: 4662477 (1987-05-01), Minoru

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