Pre-insertion resistor mechanism for a circuit interrupting device
US4324959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1978 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Oct 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/166
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pre-insertion resistor mechanism for a circuit interrupting device of the type which has a pair of normally-engaged contacts. One of the contacts is movable relative to the other contact in an arc-extinguishing environment to selectively separate the contacts to open a gap therebetween to effect circuit interruption. The contacts are continuously, electrically connected to respective, opposed circuit-connectable terminals on the device. The pre-insertion resistor mechanism includes a pre-insertion resistor electrically connected at one end to one of the terminals. The other end of the resistor carries a stationary electrode. A movable electrode assembly which is electrically connected to the other terminal is mechanically coupled to the movable contact so that upon movement thereof to open the gap, the movable electrode simultaneously separates from the stationary electrode. After a predetermined amount of the movement of the electrode has taken place, a latch assembly uncouples the movable electrode assembly from the movable contact permitting the movable electrode assembly to move back toward the stationary electrode. In this way, when the contacts are subsequently re-engaged, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.