Patent · US Expired

Device for determining rotary angle

US5375333A · kind A · utility

5Cited by

2References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hans Hecht · Stuttgart, DE
Asta Reichl · Stuttgart, DE
Lutz Ballhause · Waiblingen, DE
Erwin Krimmer · Plüderhausen, DE

Key dates

Filing date	Mar 11, 1993
Grant date	Dec 27, 1994
Priority date	—
Expiry date	Mar 11, 2013

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2201/021
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for contactless determination of a rotary angle has two bodies which are movable relative to one another, at least one sensor coil through which an alternating current flows and whose inductivity and alternating current resistance value changes due to a relative change of a size of regions of a first one of the bodies which regions are associated with the at least one coil and composed of a material selected from the group consisting of an electrically conductive material and ferromagnetic material, the first body being arranged with mechanical prestress relative to a second one of the bodies.

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