Optical coin sensing station having a passageway and beam splitters
US5767506A · kind A · utility
5Cited by
22References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1997 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | May 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a coin sensing station, coins pass edgewise along a passageway through a transparent block and interrupt three optical sensing beams that transverse the passageway at spaced locations. The beams are produced by light emitting diodes which direct light into the block where it is directed by reflection from inclined surfaces integrally molded into the block. By use of a beam splitting means, it is possible to direct the first and second sensing beams from a single source beam, across the passageway at different, spaced apart locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.