Magnetic pendulum random number selector
US5060947A · kind A · utility
22Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jan 25, 1990 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Jan 25, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/26
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A magnetic pendulum random number selector having a symmetrical field of permanent magnets mounted in its base, along with a pendulum with a magnetized mass supported to swing through the fields of the magnets. The magnets are arranged symmetrically with respect to a vertical axis through the pendulum support point. The pendulum is manually set to swinging and comes to rest randomly at one of several locations above the assembly of magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.