Electromagnet and elevator door coupler
US8424652B2 · kind B2 · utility
0Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2007 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Oct 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic coupling device includes a vane member and an electromagnet. The electromagnet includes a core having a plurality of poles comprising at least four poles. An electrically conductive winding has a first portion surrounding a first one of the poles and a second portion surrounding a second one of the poles. The winding is selectively energized for selectively magnetically coupling the electromagnet and the vane member such that the vane member and the electromagnet are movable together in a desired direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.