Drive mechanism for toy running vehicles
US4469197A · kind A · utility
7Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Feb 11, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Feb 11, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/608
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A drive mechanism for toy running vehicles comprises a frame member having a circular recess for receiving a coil spring therein, a gear, a pinion, and a gear mechanism for connecting the gear and the pinion within the recess with a drive shaft having wheels mounted thereon, a cover for the frame, another frame snap-engaged with the first mentioned frame and a spring in the recess. The inner end of the spring is inserted through a guide slot formed in the first frame and wound within the recess, the inner peripheral wall face of which has a plurality of small recesses for receiving the outer end of the wound spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.