Magneto-electric sensor device and sensing method using a sensor element comprising a 2-phase decomposed microstructure
US4785244A · kind A · utility
9Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Apr 8, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Devices such as, e.g., switches, flowmeters, and proximity sensors, as well as implant devices are made comprising an elongated ferromagnetic element. When the element is exposed to a variable magnetic field an electrical signal is obtained between contact points of the element in response to a change in the magnetic field. Preferred elongated elements have a helically deformed microduplex structure as may be produced by heat treatment and plastic twisting of a body of an alloy such as, e.g., an iron-nickel alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.