Security device for merchandise and the like

• US 5,561,417 A
• Filed: 12/28/1993
• Issued: 10/01/1996
• Est. Priority Date: 12/28/1993
• Status: Expired due to Term

• Current Assignee: Vanguard Products Group, Inc., DBA Vanguard Protex Global
• Original Assignee: Protex International Corporation (Vanguard Protex Global)
• Inventors: Goldblatt, Richard S., Rothbaum, Arthur H.
• Primary Examiner(s): SWANN III, GLEN R
• Application Number:
  US08/174,389
• Time in Patent Office: 1,008 Days
• Field of Search: 340/568, 340/687
• US Class Current: 340/568.2
• CPC Class Codes: G08B 13/1454 Circuit arrangements thereof

Abstract

An electronic security system for monitoring merchandise sounds an alarm when a change in the state of the sensors or the electrical connections is detected. The system eliminates the need for shunt plugs and other extraneous components in favor of a self-contained solid state electronic circuit. The security system includes a lid which deactivates the alarm when the lid is open. When the lid is closed, the alarm is activated and physical tampering with the electrical connections.

Claims

1. A security device for merchandise and the like comprising:

a. a sensor circuit attached to each item of merchandise to be protected, the sensor circuit including;

i. an alarm signal generation means having at least a secure state and an alarm state; and

ii. electrical conductors connected to the alarm signal generation means at one end and having conducting means at the other, for communicating the state of the sensor; and

iii. a lid that places the alarm means in a set-up mode when open and places the alarm means in an armed mode when closed, whereby in the set-up mode when a security breach is detected, the housing LEDs indicate an improper connection and the audio alarm means is deactivated, and when in the armed mode, the audio alarm means is able to sound upon the detection of the security breach means,

b. connection means for connecting to the conducting means;

c. security means for insuring that the conducting means keeps continual electrical contact with the connection means;

d. detection means connected to the connection means for determining the state of the alarm signal generation means and the integrity of the electrical conductors; and

e. an alarm connected to the detection means and which is activated upon the detection of the alarm state.

2. The device of claim 1 comprising housing LED corresponding to each cable or sensor, connected to the detection means, for indicating the secure state and the alarm state of each sensor.

3. The device of claim 1 wherein the alarm signal generation means comprises a switch.

4. The device of claim 1 wherein the alarm signal generation means comprises a conductive sensor loop designed to pass through a portion of the item of merchandise to be secured, and having a slip loop at one end in which the connecting end can pass through, whereby the unauthorized removal of the item requires disconnection of the slip loop generating the alarm signal.

5. The device of claim 1 wherein the conducting means is a plug and the connection means is a jack for receiving the plug.

6. The device of claim 5 wherein the jack is a normally closed jack thereby providing the proper connections when no plug is inserted into the jack.

7. The device of claim 1 further comprising a flashing indicating light operatively connected to the detection means for alerting store personnel of a security breach.

8. A security device for merchandise and the like comprising:

a. a sensor circuit attached to each item of merchandise to be protected, the sensor circuit including;

i. an alarm signal generation means having at least a secure state and an alarm state; and

ii. electrical conductors connected to the alarm signal generation means at one end and having conducting means on the other end, for communicating the state of the sensor;

b. an alarm means for sounding an alarm upon the detection of a security breach, the alarm means including;

i. detection means connected to the conducting means for determining the state of the alarm signal generation means and the integrity of the electrical conductor;

ii. an audio alarm means that sounds upon the detection of a security breach;

iii. a visual alarm means located next to every connection to the conducting means that lights when the security breach occurs in that respective sensor circuit; and

iv. a lid that places the alarm means in a set-up mode when open and places the alarm means in an armed mode when closed, whereby in the set-up mode when a security breach is detected, the housing LEDs indicate an improper connection and the audio alarm means is deactivated, and when in the armed mode, the audio alarm means is able to sound upon the detection of the security breach.

9. The device of claim 8 wherein the sensor circuit is an electronic clip.

10. The device of claim 8 wherein the sensor circuit is an electronic cable loop.

11. The device of claim 8 wherein the lid prevents tampering with the conducting means.

12. The device of claim 8 further comprising a latch circuit connected to the detection means which prevents an unauthorized resetting of the audio alarm means and the video alarm means once the security breach has been detected.

13. The device of claim 12 further comprising a switch means activated upon the opening of the lid;

and a reset circuit which resets the latch circuit.