Coin selector
US5078252A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1989 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Aug 9, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A coin selector comprises a first receiving coil and a first exciting coil disposed along one side of a coin path, a second receiving coil and a second exciting coil disposed along the other side of the coin path facing the first receiving coil and the first exciting coil, and drive devices for exciting and driving the first and second exciting coils. A magnetic field developed by the first exciting coil acts on the first and second receiving coils and a magnetic field developed by the second excitign coil acts on the second and first receiving coils. The coin selector further comprises judging devices. When a coin is put into and passes through the coin path, the magnetic fields presented to the first and second receiving coils change and consequence a change in the output voltages of these coils. The judging devices judge the coin passing through the coin path on the basis of the sum of the output signals of the first and second receiving coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.