EP 0314567 B1 19930203 - INSTALLATIONS FOR CONTROLLING THE ACCESS OF SECURE ENCLOSURES
Title (en)
INSTALLATIONS FOR CONTROLLING THE ACCESS OF SECURE ENCLOSURES
Publication
Application
Priority
FR 8714839 A 19871027
Abstract (en)
[origin: EP0314567A1] The invention relates to an installation suitable for controlling the electrical locks (1, 2) of a sealed room, for which each lock comprises a contact and an electronic circuit designed to close said contact for the purpose of closing the lock only when it receives a coded signal identified as correct. This installation comprises control pushbuttons (10), each comprising a contact (P) and an electronic circuit (R) designed to transmit coded positive-response signals when it receives coded interrogation signals identified as correct and when said contact is closed, and a central unit (16) capable of managing the various coded interrogation, positive-response and closing-command signals, said unit being connected to the locks by means of a reduced number of wires. <IMAGE>
IPC 1-7
IPC 8 full level
G07C 9/00 (2006.01)
CPC (source: EP US)
G07C 9/27 (2020.01 - EP US)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 0314567 A1 19890503; EP 0314567 B1 19930203; DE 3878149 D1 19930318; DE 3878149 T2 19930527; FR 2622327 A1 19890428; FR 2622327 B1 19920207
DOCDB simple family (application)
EP 88402690 A 19881025; DE 3878149 T 19881025; FR 8714839 A 19871027