Discriminator for bimetallic coins
US6851541B1 · kind B1 · utility
3Cited by
15References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A coin discriminator has a coin path along which a coin, containing a first portion and a second portion made of different metals and/or metal alloys, is arranged to pass. An electrical mechanism supplies time-varying drive signals to the coil mechanism. A detection mechanism detects eddy currents induced in the coin by the coil mechanism. The coil mechanism is arranged to induce in the coin an eddy current loop, which in a predetermined region of the coin crosses a bond between the first and the second portions of the coin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.