Electromagnetic indicator
US4132986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Aug 9, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B5/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An indicator flag is movable alternately into one of a plurality of display positions thereby to provide a distinguishable visual indication in each position. The indicator flag carried by a movable assembly is actuated by electromagnetic means and the movable assembly is latched in each display position. A pair of switches are associated with and controlled by the movable assembly from a normally closed to an open condition. The switches may function variously to control associated equipment or switch the electromagnetic means so that drive energy is required only during transition of the indicator flag from one of the plurality of display positions to another, among others.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.