Patent · US Active

Low hysteresis sensor

US8405391B2 · kind B2 · utility

3Cited by

5References

17Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Johannes Tenbrink · Alzenau, DE
Witold Pieper · Frankfurt, DE
Burkard Kraus · Geiselbach, DE
Joachim Gerster · Alzenau, DE

Key dates

Filing date	Mar 9, 2010
Grant date	Mar 26, 2013
Priority date	—
Expiry date	Jul 3, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH01F1/14716
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor comprises a magnetic field source, at least one flux conducting soft magnetic element with at least one air gap and at least one magnetic field sensor located in the air gap and measuring a change of the magnetic field of the magnetic field source. The flux conducting soft magnetic element consists of 35% by weight≦Ni≦50% by weight, 0% by weight≦Co≦2% by weight, 0% by weight≦Mn≦1.0% by weight, 0% by weight≦Si≦0.5% by weight and 0.5% by weight≦Cr≦8% by weight and/or 0.5% by weight≦Mo≦8% by weight, wherein (Mo+Cr)≦8, rest iron and unavoidable impurities.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.