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Room occupancy fire alarm indicator means and method

  • US 5,475,364 A
  • Filed: 04/28/1994
  • Issued: 12/12/1995
  • Est. Priority Date: 05/03/1988
  • Status: Expired due to Fees
First Claim
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1. A method of setting a fire alarm in a building having a number of rooms, each room having a fire sensor adapted to provide an indication of whether there is a fire in the room, said method comprising determining if fire indications have been provided for one or more rooms, and if fire indications have been set for more than one room then immediately providing a fire alarm, but if a fire indication has been provided for only one room, then providing a fire alarm only if said fire indication continues for a short selected period of time, thereby to reduce the likelihood of false alarms.

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