Power switch
US4652707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1985 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Aug 7, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power switch includes a fixed contact member 13 to which a fixed contact 14 is joined, a movable contact member 5 to which there is joined a movable contact 6 movable into and out of contact with the fixed contact 14 of the fixed contact member 13, a commutation electrode 3 for transferring an arc generated when the fixed contact 14 and the movable contact 6 are separated, and a grid 2 for extinguishing the arc transferred on the commutation electrode 3, the commutation electrode 3 having a recess 17 for allowing the movable contact 6 to move out of contact with the fixed contact 14 and so that the movable contact member 5 can move toward the fixed contact member 13, the commutation electrode 3 having an end extending parallel to the grid 2 and a slit 16, 19 extending continuously from the recess 17 to a portion parallel to the grid 2. The arc generated when the movable contact 6 is separated from the fixed contact 14 can be transferred at high speed toward the slit 16, 19 by a current produced in the commutation electrode 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.