Patent · US Expired

Electronic proximity switch dependent upon a magnetic field

US5239204A · kind A · utility

4Cited by

3References

15Claims

0Family size

Assignee

Werner Turck GmbH & Co. KG · DE

Inventors

Jens Mueller · Stuttgart, DE
Andreas Nest · Herne, DE

Key dates

Filing date	Feb 5, 1991
Grant date	Aug 24, 1993
Priority date	—
Expiry date	Feb 5, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/0036
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An electronic proximity switch dependent upon a magnetic field includes an HF resonant circuit adapted to be influenced by an approaching magnetic trigger. A coil arrangement includes a member drivable into magnetic saturation, with the member including an amorphous or predominantly amorphous metallic band of high permeability. A coil bobbin for accommodating the resonant circuit coil and the drivable member is made of a synthetic resin enriched with a pulverulent permeable material.

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