Solenoid annunciator
US4342973A · kind A · utility
6Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1980 |
| Grant date | Aug 3, 1982 |
| Priority date | — |
| Expiry date | Aug 25, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/1844
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An annunciator for a solenoid includes a conductive probe which projects into the pathway of the solenoid core piece. Upon actuation of the core piece, the probe is engaged by the core piece to partially complete an electrical circuit to an external signalling device. The probe includes a lost motion contact to insure proper making and breaking of a circuit upon further movement of the core piece into engagement with the field piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.