Motors: spring – weight – or animal powered – Spring – With winding means
Patent
1990-06-05
1992-04-14
Herrmann, Allan D.
Motors: spring, weight, or animal powered
Spring
With winding means
185 45, 446464, F03G 100, A63H 2900
Patent
active
051039362
ABSTRACT:
A thin spiral spring drive unit, in particular for a toy car, employs a crown gear in a gear train between an output shaft and a drive shaft on which a spiral spring is wound as a source of the driving force. The unit can be assembled with a small number of component parts, in a simple structure and at lower cost. Simply by changing the direction of the output shaft when it is assembled into a gear box, the direction of rotation of the output shaft may be changed. The crown gear in the drive unit is arranged at a position substantially centeral to the width of a gear box. A pinion is arranged at two positions where the crown gear intersects with the output shaft to be meshed with the crown gear by means of a positioning mechanism. The crown gear is provided on its periphery with a windup gear and with a driving pinion on the shaft thereof so that the windup gear is engaged with a gear at the time of winding while it is directly engaged with a driving gear at the time of driving.
REFERENCES:
patent: 2672216 (1954-03-01), Gokey
patent: 3647025 (1972-03-01), Paya Rico
patent: 3995718 (1976-12-01), Nakamori
patent: 4241534 (1980-12-01), Larsson et al.
patent: 4710147 (1987-12-01), Wakase
Herrmann Allan D.
Krolikowski Julie
Seikoken Kabushiki Kaisha
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