Vending machine power switching apparatus
US4604557A · kind A · utility
9Cited by
17References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Oct 10, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/001
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An improved vending machine power switching apparatus in which a single power switching circuit is associated with a plurality of load selecting relay switches and a switching control circuit, in which the control circuit controls the order of switching of the power switch and relay switches, such that any relay switch is always closed before power is delivered to its associated load and is always opened after power is removed from the load, and the power is applied and removed by the power switching means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.