Patent ID: 6265973
Filing Date: 2001-07-24
Classification: B60R,B65D,G09F,Y10T

Abstract:
An electronic seal comprising:a housing having a cavity;an electrically conductive bolt having an elongated shank and a head;signal generating means in the cavity;a first electrically insulating layer over at least a portion of the shank;an electrically conductive layer over at least a portion of the insulting layer and at least a portion of the electrically conductive layer in ohmic contact with the head forming a continuous electrical conductor with the bolt;bolt locking means in the cavity for receiving and locking the shank to the housing; andcircuit means in the cavity responsive to the received locked shank in ohmic contact with the shank and with the electrically conductive layer, the conductive layer and shank completing an electrical circuit with the circuit means to cause the signal generating means to generate a first signal manifesting a first code and a locked seal and a second signal manifesting a second code and a tampered condition when the shank is severed.