Controllable inductor
US5936503A · kind A · utility
11Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Jul 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2029/143
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controllable inductor including a tubular core, a main winding (1) surrounding the core, a control winding running substantially axially to the core and an element (3) surrounding the core and arranged to support the main winding wound outside thereof in radial layers. The element includes means arranged to provide channels (19) partly defined by the radially inner turn of the main winding. Said channels are communicating with spacings between said layers (2). A member is arranged to generate a flow of air in the channels and through the spacings of the layers for cooling the main winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.