Remote alarm system for detection of fire extinguisher removal

• US 4,003,048 A
• Filed: 02/23/1976
• Issued: 01/11/1977
• Est. Priority Date: 02/23/1976
• Status: Expired due to Term

• Current Assignee: George Weise
• Original Assignee: George Weise
• Inventors: Weise, George
• Primary Examiner(s): Caldwell, John W.
• Assistant Examiner(s): Wannisky, William M.
• Application Number:
  US05/660,539
• Time in Patent Office: 323 Days
• Field of Search: 340/280, 340/289, 340/272, 340/409, 340/256, 169/23, 169/51, 200/61.08, 200/61.59, 200/61.62, 200/61.58, 339/80
• US Class Current: 340/568.4
• CPC Class Codes: A62C 13/78 Suspending or supporting devices
• CPC Class Codes: G08B 13/1472 with force or weight detection
• CPC Class Codes: Y10S 439/952 Jumper for use with specific apparatus

Abstract

A detection and alarm system for detecting and removal of a fire extinguisher from its usual location including an electrically conductive breakaway lanyard positioned around the neck of the fire extinguisher, its ends connected to two male prongs plugged into a female receptacle of a supervisory circuit leading to an alarm circuit. When the supervisory circuit is interrupted by the removal of a fire extinguisher, a relay trips the alarm circuit.

Claims

1. A detection device and alarm system for the detection of the removal of a fire extinguisher from its usual location within a particular zone comprising in combination:

a plurality of break-away electrically conductive wire lanyard means interposed upon a supervisory circuit;

two male prong-female receptacle break-away connections to transfer supervisory current to said lanyard and a male prongfemale receptacle connection to output supervisory current from said lanyard to said supervisory circuit and the next detection device in series;

said female receptacle being stationarily secured;

an end-of-line supervisory circuit resistor to define said zones;

two batteries, one on either side of said resistor, connected in series to provice current for said supervisory circuit;

a sensitive relay connected to monitor each zone of said supervisory zoned circuit current to detect interruption of said zoned circuit;

a control alarm means having indicators corresponding to each of said supervisory circuit zones to indicate interruption of said supervisory circuit in a particular zone;

alarm circuit lines to correspond with and differentiate each zone of said supervisory circuit, connected to said alarm indicator means;

a latching relay to activate a particular alarm circuit;

a power source to supply current to said alarm circuit through said latching relay upon interruption of a particular zone of said supervisory circuit; and

switch means activated by said sensitive relay upon interruption of said supervisory circuit to in turn activate said latching relay to supply power to an alarm circuit line corresponding with the interrupted supervisory circuit zone.

2. The alarm system combination of claim 1 wherein said batteries of said supervisory circuit produce a current of 6 volts.

3. The alarm system combination of claim 1 wherein said alarm circuit power source includes a transformer to reduce 120 volts current to 6 volts.

4. A detection device and alarm system, having indicator alarm means and provided electrical current from a power source, for the detection of the removal of a fire extinguisher from its usual location comprising in combination:

a supervisory electrical circuit receiving current from said power source;

an alarm circuit, distinct from said supervisory circuit, having said indicator alarm means connected thereto and receiving current only to transfer an alarm condition;

a plurality of break-away electrically conductive wire lanyard devices connected in series interposed upon said supervisory circuit;

a plurality of two-pole circuit breaker means, one such circuit breaker means connecting each of said wire lanyards to said supervisory circuit such that current is transferred through said lanyards;

a double throw-double pole relay means interposed upon, transferring and conducting current to said supervisory circuit from said power source and connected to and capable of transferring current to said alarm circuit to activate said alarm means upon interruption of said supervisory circuit;

each of said wire lanyard means being connected to said supervisory circuit through a two male prong - female receptacle pole break-away circuit breaker means, one pole receiving said supervisory circuit to transfer power through said lanyard and one pole to receive power from said lanyard and output same;

a locking box to secure said two male prongs, each one to an end of said lanyard, providing a unified movement thereby;

a housing jack to contain said female receptacle, having bracket means to fixably secure said housing jack in a stationary position;

said double pole-double throw relay means having a first pole connected to and transferring current from said power source to said supervisory circuit and a second pole connected to said alarm circuit activated upon the interruption of said supervisory circuit whereby said first pole drops out, causing said second pole to transmit current from said power source to said alarm circuit.

5. The combination of claim 4 wherein said current is 6volts produced by batteries.

6. The combination of claim 4 further including a transformer to reduce a 120 volt power source current to a 6 volt current.