Robbery alarm system

• US 3,300,770 A
• Filed: 10/12/1964
• Issued: 01/24/1967
• Est. Priority Date: 10/12/1964
• Status: Expired due to Term

• Current Assignee: Jean-Luc Brousseau, Lucien Brousseau
• Original Assignee: Jean-Luc Brousseau, Lucien Brousseau
• Inventors: Brousseau, Lucien, JEAN-LUC BROUSSEAU
• Application Number:
  US04/403,068
• Time in Patent Office: 834 Days
• US Class Current: 340/570
• CPC Class Codes: G07G 1/0027 Details of drawer or money-box
• CPC Class Codes: G07G 3/003 Anti-theft control theft alarms G08B13/00
• CPC Class Codes: G08B 13/1481 with optical detection
• CPC Class Codes: G08B 13/189 using passive radiation detection systems

Claims

1. A ROBBERY ALARM SYSTEM, COMPRISING:

(A) A CASH DRAWER FORMED WITH AT LEAST ONE PAPER MONEY-RECEIVING COMPARTMENT;

(B) AN ELECTRICAL ALARM CONTROL CIRCUIT MOUNTED BENEATH THE BOTTOM OF ONE OF SAID COMPARTMENTS AND ADAPTED, UPON ENERGIZATION THEREOF, TO CAUSE OPERATION OF AN ALARM DEVICE;

(C) A LIGHT SENSITIVE RESISTANCE MOUNTED TO EXTEND THROUGH SAID BOTTOM TO FACE UPWARDLY AND CONNECTED IN SERIES IN SAID ALARM CONTROL CIRCUIT;

SAID RESISTANCE BEING ADAPTED UPON EXPOSITION TO AMBIENT LIGHT WHEN THE DRAWER IS OPENED TO ALLOW CURRENT THERETHROUGH TO ENERGIZE SAID CIRCUIT AND UPON BEING BLINDED TO PREVENT PASSAGE OF CURRENT AND THUS OPEN AND DEENERGIZE SAID ALARM CONTROL CIRCUIT;