unauthorised opening serves as informant.

摘要

A device for visually indicating an attempt to tamper with or defeat a locking seal, the locking seal being of the type having a lock body containing a passageway, a bolt having an end which is inserted and received in the passageway, and means within the lock body for preventing removal of the inserted bolt end therefrom: wherein the device comprises: a frangible, brittle shroud adapted to surround the lock body, the shroud cracking, chipping or fracturing upon the application thereto of low force during an attempt to tamper with or defeat the seal by disassociating the lock body from the bolt, and a frangible, brittle flange integral with the shroud and adapted to surround the bolt at the point of entry of its end into the passageway, the flange cracking, chipping or fracturing upon the application of low force either exteriority thereto or between the flange and the bolt either, during an attempt to tamper with or defeat the seal by removing the bolt from the lock body or inserting a removal-preventing-means-defeating object into the passageway; cracking, chipping or fracturing of the shroud or the flange providing a visual indication of an attempt to tamper with or defeat the seal. IMAGE