EP 0125443 B1 19870520 - CONTROLLED BARRIER
Title (en)
CONTROLLED BARRIER
Publication
Application
Priority
DE 3312966 A 19830411
Abstract (en)
[origin: EP0125443A1] 1. A controllable barrier (1, 2), in particular for the protection of objects at nuclear power stations, comprising a controlled section (3), where from a determined deformation and/or in the event of a destruction of the barrier (1, 2) a signal is transmitted, characterised in that the control section (3) is formed by an ultrasonic beam (9) which travels in a cavity (6) of the undamaged barrier (1, 2) from a transmitter (8) to a receiver (8) and whose interruption triggers a signal, where the transmitter and receiver are arranged as a tandem ultrasonic head (8) at the one end of the controlled section (3) and a reflector (7) is arranged at the other end of the controlled section (3), with whose aid the ultrasonic beam (9) is guided from the transmitter (8) to the receiver (8).
IPC 1-7
IPC 8 full level
E06B 9/01 (2006.01); G08B 13/12 (2006.01); G08B 13/16 (2006.01)
CPC (source: EP)
E06B 9/01 (2013.01); G08B 13/122 (2013.01)
Designated contracting state (EPC)
CH DE FR LI
DOCDB simple family (publication)
DE 3312966 A1 19841011; DE 3463866 D1 19870625; EP 0125443 A1 19841121; EP 0125443 B1 19870520
DOCDB simple family (application)
DE 3312966 A 19830411; DE 3463866 T 19840327; EP 84103375 A 19840327