Electromechanical RF switch activated by external magnetic field
US5841278A · kind A · utility
13Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1996 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Jul 17, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3657
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electromechanical switch for use in a magnetic resonance imaging (MRI) apparatus is constructed of non-magnetic materials and includes a pivotable solenoid operative for moving a contact in response to forces created by interaction between passing through the electromagnet and the primary or static field of the MRI imaging magnet. The switch can be used to disconnect the RF receiver of the MRI apparatus from the receiving antenna during transmission of RF excitation signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.