Patent · US Active

Inductive proximity switch

US7511482B2 · kind B2 · utility

2Cited by

10References

22Claims

0Family size

Assignee

IFM Electronic GmbH · US

Inventors

Reinhard Teichmann · Amtzell, DE
Bernd Buck · Nonnenhorn, DE
Joerg Schuetze · Günzburg, DE

Key dates

Filing date	Aug 31, 2006
Grant date	Mar 31, 2009
Priority date	—
Expiry date	Aug 31, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2017/9527
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An inductive proximity switch with a housing formed of a nonmagnetic, high-grade steel, with a transmitting coil, two receiving coils which are connected in series in opposite directions and which are located symmetrically relative to the transmitting coil, and an evaluation circuit which is connected to the receiving coils. At a given size, the inductive proximity switch has a relatively large operating distance and the operating distance is largely stable, especially is largely independent of temperature, essentially in that, on the back of the receiving coils, opposite the influence side, there is a pre-damping element and the pre-damping properties of the pre-damping element at least approximately correspond to the pre-damping properties of the housing on the influence side.

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