Torsion type magnetic field measurement device
US4680544A · kind A · utility
11Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1984 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Mar 6, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device sensitive to a magnetic field (B) comprising a flap attached to a support by torsion hinges and a conductor. The conductor carries a current I and thus generates under the effect of a magnetic field a force which tends to cause the flap to turn about its hinge axis. The measurement of this rotation or of the compensation required to nullify the effect of the magnetic field (B) constitutes a measure of this magnetic field. Embodiments are disclosed having multi-turn conductors or ferromagnetic coatings instead of conductors on the flaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.