Flexible discus device
US4115946A · kind A · utility
38Cited by
4References
14Claims
0Family size
Inventor
Key dates
| Filing date | Jan 17, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jan 17, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S16/08
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A discus-like hurling toy is formed of a disc of cloth having a gathered and downturned hemmed edge. A string of regularly spaced small metallic weights are fixed within the hem. The device may be worn as a hat or folded or crumpled for storage and when hurled with a rotational motion the centrifugal force acting on the weights extends the device so that it exhibits aerodynamic properties to prolong its flight and give it a true trajectory. Alternative embodiments employ a stranded metal cable and an annular sand bag as weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.