Vending machine control and diagnostic apparatus
US4458187A · kind A · utility
24Cited by
12References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1983 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Jul 12, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F11/16
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Vending machine control and diagnostic apparatus for a vending apparatus having product delivery means comprising an electrically operated actuator for delivery of products, an impedance element and a circuit opening switch. The impedance element and the switch are connected electrically in series with each other and in a parallel circuit with the actuator, and the opening and closing of the switch is controlled by the operation of the actuator. The control and diagnostic apparatus detects changes in impedance of the parallel circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.