FLEXIBLE LOCKING AND SEALING DEVICE WITH UNAUTHORISED OPENING MONITORING Russian patent published in 2014 - IPC E05B39/02 G09F3/03 

FIELD: construction.

SUBSTANCE: device includes case 1 and cable section 2 with passive end 3 and loose end 4, with end cap 5 and neck 6 passing through duct 9 in the case and forming a loop. The cable is fixated by locking device 10 when device closes. Unauthorised opening monitoring device is made in the form of fastener 11 interacting with neck 6 of end cap 5 when it is pushed through orifice 12 in cap 13, forming idle reverse loop. Pursuant to invention, fastener 11 is formed in thin metal plate 14 attached in the case together with cap 13 featuring maintenance window 18 with radial slots forming internal spring-elastic tabs 19 bent outwards at the angle of end cap entry and interacting with neck 6 on the end cap 5. Procedure of monitoring device application: after the device is locked the end cap is pushed through orifice 15 in cap until spring-elastic tabs 19 engage with end cap neck 6. Strength of end cap fastening in that position is checked by attempt to retract it from cap with a little effort. In case of unauthorized retraction, end cap is either destroyed or torn off the cable section. Both results are evident.

EFFECT: monitoring of unauthorised opening enabled.

3 cl, 2 dwg