Polarized electromagnetic relay
US4614927A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H51/2227
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polarized electromagnetic relay has a movable block which includes two U-shaped magnetic plates, each of which has first and second ends. The plates are fixed on individually associated and opposite poles of a permanent magnet to oppose each other. A core has one end placed between the two magnetic plates. A yoke is magnetically connected to the core, the yoke having a fork on one end thereof. The fork is placed outside each of the two magnetic plates. A spool with a coil mounted thereon has a center hole through which the core is inserted. The movable block is supported in a manner which enables it to move in a direction which is parallel to the magnetic axis of the permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.