Patent · US Expired

Position sensor

US4712083A · kind A · utility

5Cited by

3References

20Claims

0Family size

Assignee

Alcatel N.V. · NL

Inventors

Wolfgang Heck · Bischofswerda, DE
Peter Kersten · Leonberg, DE
Hans Volz · Schwieberdingen, DE

Key dates

Filing date	Dec 23, 1985
Grant date	Dec 8, 1987
Priority date	—
Expiry date	Dec 23, 2005

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/145
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A high-resolution position sensor utilizes a detector having at least one flat magnetic-field-dependent resistor, in stripe form, whose ends are connectable to an output voltage, and a magnetizable device which is moveable relative to the magnetic-field-dependent resistor and has portions transverse to the direction of movement which exhibit alternately different space permeabilities, with the magnetic-field-dependent resistor extending parallel to and at a distance from said portions by the magnetic-field-dependent resistor. The magnetic field dependent resistor displays anisotropy in the longitudinal direction of the stripes. At least in the area of the magnetic-field-dependent resistor the device is magnetized in or opposite the direction of movement.

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