Spiral spring power source for toy
US4881621A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | May 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/608
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
This invention relates to a spiral spring power source for a toy, which can select a method of winding a power spiral spring 7 by a pulling string type winding cord 25 and a method of winding the power spiral spring 7 by a winding key 43 by removing a mechanism relative to the winding yarn 25, can alter the pulling direction of the winding cord 25 at 360.degree. in case of the method with the winding cord 25, can drive the output shaft through a gear set when uncoiling the energized power spiral spring 7, but can produce outputs not at one position but at a plurality of positions to be connected to a plurality of gears selected from the gear set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.