Interconnection of alarms of smoke detectors with distinguishable alarms
First Claim
1. In a circuit of an abnormal condition detector alarm device adapted to be connected to other such devices to provide an interconnection of annunciator operation, each of the devices comprisingcondition responsive means having an output upon the presence of an abnormal condition,first annunciator means connected to said condition responsive means output to provide a steady type of energization of said annunciator means upon the presence of said output,switch means controlled by said condition responsive means output for controlling the supply of power from a source of power,first circuit means connected to said switch means and to said source of power when said switch means is operated to provide a second output,second circuit means connecting said second output to said first annunciator means to provide an intermittent type of energization of said annunciator means, andthird circuit means adapted to connect said second output to a second circuit means of a second annunciator means of a remote second condition detector alarm device to provide an intermittent type of energization of said second annunciator means and upon an operation of a switch means of said remote second condition detector alarm device, a second output of said second device is adapted to provide said intermittent type of energization of said first annunciator means.
0 Assignments
0 Petitions
Accused Products
Abstract
A smoke detection alarm system which has at least one detector and alarm in each of the plurality of areas with an interconnection circuit whereby upon the detection of an abnormal smoke condition in any one of the areas, the annunciator or horn of the detector in the area having the abnormal condition is operated with a steady tone and the annunciators of the other detectors in other areas are operated in an intermittent tone so that an occupant of an area can determine by the sound of the tone from the annunciator whether the abnormal condition is in the area in which he is located or in a remote area.
-
Citations
4 Claims
-
1. In a circuit of an abnormal condition detector alarm device adapted to be connected to other such devices to provide an interconnection of annunciator operation, each of the devices comprising
condition responsive means having an output upon the presence of an abnormal condition, first annunciator means connected to said condition responsive means output to provide a steady type of energization of said annunciator means upon the presence of said output, switch means controlled by said condition responsive means output for controlling the supply of power from a source of power, first circuit means connected to said switch means and to said source of power when said switch means is operated to provide a second output, second circuit means connecting said second output to said first annunciator means to provide an intermittent type of energization of said annunciator means, and third circuit means adapted to connect said second output to a second circuit means of a second annunciator means of a remote second condition detector alarm device to provide an intermittent type of energization of said second annunciator means and upon an operation of a switch means of said remote second condition detector alarm device, a second output of said second device is adapted to provide said intermittent type of energization of said first annunciator means.
-
3. In a circuit for a plurality of abnormal condition detector alarm devices each comprising;
an abnormal condition responsive means having a first output upon the presence of an abnormal condition, an annunciator means energized in a first type of operation upon the presence of said first output, switch means controlled by said first output, first circuit means producing a second output when said switch means is operated upon the presence of an abnormal condition, annunciator circuit control means connected to said annunciator means and having an input circuit responsive to said second output for energizing said annunciator means in a second type of operation which would be dominated by said first type of operation, and second circuit means interconnecting said first circuit means of all of said plurality of said devices whereby upon one of said devices sensing an abnormal condition and having said first output, said annunciator means of said one device is operated with a first type of operation and said second output of said one device is connected to said annunciator circuit control means of the other of said plurality of devices to energize their annunciator means with a second type of operation to indicate that the abnormal condition is at said one of said devices. - View Dependent Claims (4)
Specification