Testing device for coins of different dimensions and different electro-magnetic properties
US4815579A · kind A · utility
7Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | May 14, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Two sensors (2, 3) are placed opposite each other against the rim of the coin (5). By this, a signal, corresponding to the diameter of the coin (5) is produced and a drive (18/19, 23/24) is driven which moves two support members in order to support a coin between them (13), the diameter of which corresponds to the distance between the sensors (2, 3) in a position that is centered to a test coil (10) of an inductive coin testing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.