Magnetic field indicator
US6145467A · kind A · utility
1Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1997 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Dec 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field indicator mounts to an MRI system to indicate the presence of the polarizing magnetic field. An indicator wheel is mounted to a frame and is rotatable between an energized orientation in which a red colored region is seen through a window and a de-energized orientation in which a green region is aligned with the window. A weight biases the indicator wheel in the de-energized orientation and a ferrous rod rotates the wheel to its energized orientation when the polarizing field is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.