Patent ID: 6353389
Filing Date: 2002-03-05
Classification: G08B

Abstract:
A shoplift alarming device comprising:a) one or more article-attachment portions each including a casing having an article-attachment surface to be attached to an article, and a switch provided in said casing, and having a contact and a movable piece being returnably biased to project outward from said article-attachment surface of said casing, said contact being configured to be closed when said movable piece is pushed toward an inside of said casing and to be opened when said movable piece is projected outward from said article-attachment surface by the biasing force; b) one or more cords each having a main lead line pair formed of first and second main lead lines connected to respective terminals of said contact of said switch of said article-attachment portion, and a sub-lead line extending along said first and second main lead lines; c) a cord connecting portion including a plurality of terminal portions each having a pair of primary terminals for connection with ends, remote from said switch, of said first and second main lead lines of said cord, one secondary terminal for connection with an end, remote from said switch, of said sub-lead line, a pair of main terminals formed by a series connection of said plurality of primary terminal pairs, and one sub-terminal connected to said respective secondary terminals; and d) a monitoring portion having a main alarm, a first main alarm drive circuit for activating said main alarm when a path between said main terminals of said cord connecting portion is electrically open, and a second main alarm drive circuit for activating said main alarm when said main terminals of said cord connecting portion are short-circuited, furthermore when said sub-terminal and said main terminal are short-circuited; wherein said article-attachment portion is provided at said article-attachment surface of said casing with an electrode exposed at said article-attachment surface and electrically connected to one of said first and second main lead lines, or said sub-lead line, and an electrically conductive adhesive film electrically connected to said sub-lead line, or one of said first and second main lead lines, and disposed at a region of said article-attachment surface other than said electrode and said movable piece.