EP 0179328 B1 19920108 - SECURITY KEY AND CODED READER FOR ELECTRONIC LOCK SYSTEMS
Title (en)
SECURITY KEY AND CODED READER FOR ELECTRONIC LOCK SYSTEMS
Publication
Application
Priority
DE 3437030 A 19841009
Abstract (en)
[origin: US4706084A] A locking system includes a key which has a carrier provided with coded information. The coded information is obtained from an insulating layer containing a plurality of windows in which conductive strips extend. Each window is traversed by at least one conductive strip which is electrically connected to the carrier and with at least another strip which is insulated therefrom. Applying onto the windows is a coating layer which selectively insulates each window by either insulating the one strip or the other strip or the entire window so that each window can be coded by either one of three information modes. Cooperating with the key is a reader which contains reading contacts, a potential supply contact and different types of code contacts arranged in an arbitrary manner and communicates with electrical circuitry to determine the correctness of the key.
IPC 1-7
IPC 8 full level
E05B 49/00 (2006.01); E05B 49/02 (2006.01); G07C 9/00 (2006.01)
CPC (source: EP US)
G07C 9/00706 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0179328 A2 19860430; EP 0179328 A3 19880601; EP 0179328 B1 19920108; AT E71426 T1 19920115; DE 3437030 A1 19860410; DE 3585131 D1 19920220; JP H0645980 B2 19940615; JP S6192274 A 19860510; US 4706084 A 19871110
DOCDB simple family (application)
EP 85112554 A 19851004; AT 85112554 T 19851004; DE 3437030 A 19841009; DE 3585131 T 19851004; JP 20901585 A 19850924; US 78348585 A 19851003