EP 0939943 A1 19990908 - DISPLAY ELEMENT FOR USE IN A MAGNETIC ANTI-THEFT SYSTEM
Title (en)
DISPLAY ELEMENT FOR USE IN A MAGNETIC ANTI-THEFT SYSTEM
Title (de)
ANZEIGEELEMENT FÜR DIE VERWENDUNG IN EINEM MAGNETISCHEN DIEBSTAHLSICHERUNGSSYSTEM
Title (fr)
ELEMENT D'AFFICHAGE UTILISE DANS UN SYSTEME ANTIVOL MAGNETIQUE
Publication
Application
Priority
- DE 9802421 W 19980819
- DE 19740908 A 19970917
Abstract (en)
[origin: WO9914718A1] The invention relates to a display element for use in a magnetic anti-theft system, said element comprising an elongated alarm strip (2) consisting of an amorphous ferromagnetic alloy and at least one elongated activation strip (1d) consisting of a semi-rigid magnetic alloy and applied to the alarm strip. One or more physically separate regions consisting of a non-magnetic phase are incorporated in the activating strips (1d) by thermal treatment. The semi-rigid magnetic alloy has a coercitive force Hc of between 15 and 100 A/cm and a retentivity of at least 0,8 T. This design allows for a very easy magnetisation of the activation strip (1d) in one direction as a result of the directional homogeneity. This therefore makes it possible to work at a greater distance from the source of the external magnetic field, and to carry out a remote activation. These activation strips (1d) are easy to produce compared to activation strips which are partly segmented or are perforated.
IPC 1-7
IPC 8 full level
G08B 13/24 (2006.01)
CPC (source: EP US)
G08B 13/2408 (2013.01 - EP US); G08B 13/244 (2013.01 - EP US); G08B 13/2442 (2013.01 - EP US)
Citation (search report)
See references of WO 9914718A1
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
WO 9914718 A1 19990325; DE 19740908 C1 19990805; EP 0939943 A1 19990908; JP 2001505344 A 20010417; US 6166636 A 20001226
DOCDB simple family (application)
DE 9802421 W 19980819; DE 19740908 A 19970917; EP 98951172 A 19980819; JP 51726899 A 19980819; US 30828699 A 19990517