Coin checking apparatus
US4733766A · kind A · utility
5Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1985 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Dec 4, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D5/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The arrival of a coin in a coin checking apparatus is detected by arranging for the coin to hit a member (16). The vibration caused by the impact causes a piezoelectric element (36,36a) to give a transient output signal which is used to switch on electronic circuitry of the coin checking apparatus. The circuitry is normally switched off and thus over a period of time the average power consumption of the coin checking apparatus is low so that it can be satisfactorily run from a battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.