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Alarm device for indicating the removal of a fire extinguisher

  • US 3,893,095 A
  • Filed: 05/31/1974
  • Issued: 07/01/1975
  • Est. Priority Date: 05/31/1974
  • Status: Expired due to Term
First Claim
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1. An alarm device for indicating the removal of a fire extinguisher therefrom comprising a casing having an opening at the front, a drawer slidably received in said casing having a front wall for blocking said casing opening, an electric alarm in said drawer, a switch in circuit with said alarm, a horizontally reciprocal plunger for opening said switch in a first position thereof to inactivate said alarm and closing said switch in a second position thereof to activate said alarm, means biasing said plunger into said second position, a vertically reciprocal plunger extending downwardly through the top of said casing to a first position to retain said horizontal plunger in its first position, means biasing said vertical plunger upwardly to a second position to permit said horizontal plunger to assume its second position, and means for locking said drawer in said casing, whereby when a fire extinguisher is supported on said casing said vertical plunger is depressed sufficiently by said fire extinguisher to keep said horizontal plunger in its said first position and when said fire extinguisher is removed said horizontal plunger moves to its said second position.

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