Global Patent Index - EP 0161174 B1

EP 0161174 B1 19881109 - METHOD FOR THE THERMAL COMPENSATION OF A MAGNETIC CIRCUIT

Title (en)

METHOD FOR THE THERMAL COMPENSATION OF A MAGNETIC CIRCUIT

Publication

EP 0161174 B1 19881109 (FR)

Application

EP 85400729 A 19850412

Priority

FR 8406284 A 19840420

Abstract (en)

[origin: ES8704665A1] The present invention involves a thermal compensation procedure for magnetic circuits, such as those used in security devices detecting metallic masses, whose losses increase as a function of ambient temperature. According to the invention a body is placed in the immediate proximity of the magnetic circuit, the body being made of a material whose magnetic permeability is a decreasing function of temperature and whose Curie point equals the maximum possible ambient temperature.

IPC 1-7

H01F 15/16

IPC 8 full level

H01F 27/00 (2006.01)

CPC (source: EP US)

H01F 27/008 (2013.01 - EP US)

Designated contracting state (EPC)

BE CH DE FR GB IT LI LU NL

DOCDB simple family (publication)

EP 0161174 A1 19851113; EP 0161174 B1 19881109; BR 8501811 A 19851217; CA 1226341 A 19870901; DE 3566186 D1 19881215; ES 542171 A0 19870416; ES 8704665 A1 19870416; FR 2563368 A1 19851025; FR 2563368 B1 19870619; IN 164640 B 19890422; MX 158953 A 19890331; PT 80313 A 19850501; PT 80313 B 19870529; US 4704578 A 19871103; ZA 852940 B 19851127

DOCDB simple family (application)

EP 85400729 A 19850412; BR 8501811 A 19850416; CA 478775 A 19850410; DE 3566186 T 19850412; ES 542171 A 19850412; FR 8406284 A 19840420; IN 294MA1985 A 19850417; MX 20503185 A 19850419; PT 8031385 A 19850418; US 72233485 A 19850412; ZA 852940 A 19850419