Electromagnetic contactor
US4489225A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Aug 3, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/362
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic contactor comprises a stationary contact point fixed to a stationary contact, a movable contact point fixed to a movable contact to associate with the stationary contact point for switching operations, an arc box for arc extinction for receiving the stationary and movable contacts, a commutation plate fixed to the arc box to commutate arc produced between the stationary and movable contacts and grids placed adjacent to the commutation plate and each having fitting pawls to be inserted into slits formed in the arc box, the top end of said fitting pawls being bent at the portion projecting from the slit to fix the grid to the arc box. The shortest distance X between the commutation plate and the stationary contact and the shortest distance Y between the grid and the stationary contact have relation of X.ltoreq.Y.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.