Control system utilizing momentary switching devices
US4234801A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1978 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Feb 22, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/23466
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control system is disclosed which is capable of controlling N+1 operational modes of a plurality of machine functions of an apparatus utilizing N momentary switching devices in a specific logical interrelationship. The control system includes gate circuit means which is responsive to the N switching devices for latching the control system in at least N+1 operational modes whereby the machine functions are activated and deactivated in accordance with one of a plurality of predetermined operational sequences associated with the operational modes. The N switching devices operate independent of each other yet are interrelated by the gate circuit means to limit the maximum AC line current used by the machine functions during any one of the N+1 operational modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.