Display table security system
First Claim
1. A security system for individual articles on display comprising a sensor detector engaged by an article on display and responsive to a predetermined movement of said article or to a predetermined condition of the sensor detector itself, an indicator sub-system having an alarm annunciator, means for connecting said sensor detector to said indicator sub-system and comprising a continuity circuit and a floating circuit, said indicator sub-system comprising a first indicator circuit connected to said continuity circuit and responsive to interruption of said continuity circuit and a second indicator circuit connected to said floating circuit and responsive to an interruption of said floating circuit, said alarm annunciator being connected to said first and second indicator circuits and actuated by either one or both of said indicator circuits.
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Accused Products
Abstract
A control module is connected to a table strip having a number of jacks. A sensor probe which consists of a sensor detector and a sensor cable has at the end of the cable a plug which is connected to the table strip jack. Each sensor cable is provided with a continuity circuit and a floating circuit such that cutting of the cable or shorting of the cable will energize an indicator circuit and an alarm annunciator in the control module.
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Citations
6 Claims
- 1. A security system for individual articles on display comprising a sensor detector engaged by an article on display and responsive to a predetermined movement of said article or to a predetermined condition of the sensor detector itself, an indicator sub-system having an alarm annunciator, means for connecting said sensor detector to said indicator sub-system and comprising a continuity circuit and a floating circuit, said indicator sub-system comprising a first indicator circuit connected to said continuity circuit and responsive to interruption of said continuity circuit and a second indicator circuit connected to said floating circuit and responsive to an interruption of said floating circuit, said alarm annunciator being connected to said first and second indicator circuits and actuated by either one or both of said indicator circuits.
Specification