Electro-lifting magnet
US4264887A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1978 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Nov 24, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/206
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil for an electromagnet is made up of a spiral wound, anodized aluminum strip, and a strip of magnetic material wound in interleaved fashion with the central portion of the aluminum strip. The magnetic material strip is electrically insulated from the aluminum strip and the aluminum strip is electrically energized to excite the magnet. The magnetic material strip is wider than the aluminum strip and extends beyond both opposite edges of the aluminum strip to make direct contact with the coil housing and a pole shoe. Electrical insulating material fills the cavity defined by the magnetic strip projecting beyond the edges of the aluminum strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.