Superconducting magnets
US5884489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Nov 7, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F6/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A super-conducting electro-magnet for use in an MRI system comprising a helium vessel within which magnet windings are positioned, a vacuum chamber within which the helium vessel is contained, at least one thermal shield positioned between the helium vessel and the vacuum chamber in spaced apart relationship, a service turret including a refrigerator thermally coupled to the said at least one shield for cooling purposes, a tube which extends through the turret from the windings to facilitate filling, and conductors which extend through the turret from the windings to facilitate current injection to the windings and to provide a vent for the helium gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.