Instantaneously tripping device for circuit interrupter
US3940723A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | May 20, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/2463
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosed instantaneously tripping device includes a stationary iron core encircling a conductor and responsive to a flow of shortcircuiting current through the conductor to attract a movable iron core to open contacts. A locking and releasing plate are operatively coupled to the movable core to transfer the movement of a closing latch to the latter. After the completion of the closing operation effected by a switching mechanism, the locking plate locks the movable core while only during the closing operation of the switching mechanism does the releasing plate release the movable core to permit it to be attracted by the stationary core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.