Magnetic circuit switching device with single-sided attraction
US9530552B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Nov 27, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Nov 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1669
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic circuit switching device with single-sided attraction includes a housing with a first side and a second side individually arranged at either side, where the first side has an attraction surface to attract an iron core; a permanent magnet having a first type magnetic pole and a second type magnetic pole individually arranged at inner and outer side with opposite properties; a nonconductive axial tube for the iron core to engage, having an opening at the right side extending to the second side of the housing; and a spring providing elastic force for the iron core to displace. With a magnetic path alteration function and the elastic force from the spring, the structure is able to keep the iron core in a pre-determined position. Therefore the iron core has a wider stretching range for operation, increasing the possibilities of wider application and ensuring in-time adjusting in case of deviation and wear and tear of the device. Also, the present invention requires less power for operation, thus achieving an energy-saving effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.