Alarm for removal of a fire extinguisher

• US 4,015,250 A
• Filed: 09/02/1975
• Issued: 03/29/1977
• Est. Priority Date: 09/02/1975
• Status: Expired due to Term

• Current Assignee: The Larsen's Manufacturing Co.
• Original Assignee: The Larsen's Manufacturing Co.
• Inventors: Fudge, William L.
• Primary Examiner(s): Swann, III, Glen R.
• Application Number:
  US05/609,350
• Time in Patent Office: 574 Days
• Field of Search: 340/280, 340/272, 340/274 R, 200/61.81, 200/61.93, 169/23, 169/51
• US Class Current: 169/23
• CPC Class Codes: G08B 13/08 by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
• CPC Class Codes: G08B 13/1472 with force or weight detection

Abstract

A source of electrical energy, a normally closed momentary contact switch, and an electrically energizable warning device are connected in a series circuit and mounted with respect to a fire extinguisher mount such as a cabinet or bracket so that the switch is held open when the extinguisher is fully installed in the mount, but is allowed to close as an incident to removal of the extinguisher from the mount, as by opening the cabinet door. A manually operable switch may be added for disabling the normal circuit operation when desired. The circuitry may be contained in a housing hingedly connected to the mount, to facilitate servicing the circuit without removing the extinguisher.

Claims

1. In combination:

a fire extinguisher mount comprising a first cabinet for containing said fire extinguisher, having a door to be opened to gain access thereto;

an electric module including a second cabinet, a source of electrical energy, an electrically energizable alarm device, and switch means for controlling energization of said device from said source;

and hinge means positioning said second cabinet within said first cabinet so that said switch means prevents energization of said device when said door is closed, but acts, as an incident to opening of said door, to cause energization of said device.

2. The structure of claim 1 wherein said second cabinet may be pivoted on the hinge of said positioning means to enable servicing of said module without removing said module from said first cabinet.

3. In combination:

an outer cabinet having a door;

an inner cabinet having an open bottom and containing an element replaceable through said bottom;

a switch actuator extending out of said inner cabinet;

and means hingedly mounting said inner cabinet within said outer cabinet for pivotal movement between a first position, in which said actuator engages the inside of said door and said bottom engages said outer cabinet, and a second position in which said element is accessible for replacement.