Smoke alarm network
First Claim
Patent Images
1. A smoke alarm network comprising:
- (a) a plurality of stations;
(b) a smoke alarm unit operatively installed at each of said stations, said unit including in a common housing a smoke alarm circuit having an electrical output upon detection of smoke thereby, and an alarm sounding device connected to said circuit within said housing and powered by said electrical output to give audible warning at the station thereof, said smoke alarm unit including means for the remote activation of said sounding device in the absence of smoke;
(c) a control panel remote from said stations;
(d) alarm indicators on said control panel, said alarm indicators being associated respectively with said stations;
(e) switching means having each smoke alarm circuit, each sounding device and means for remote activation thereof, and each alarm indicator connected thereto, said switching means effecting activation of said alarm indicator in response to the electrical output from said smoke alarm circuit, and said switching means cooperating with the means for remote activation of said sounding device;
(f) a network power source connected to said switching means and providing operating power therefor; and
(g) alert switch means on said control panel, connected to said switching means, and operable to effect the remote activation of selected sounding devices not already activated by the electrical outputs of associated smoke alarm circuits.
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Abstract
A smoke alarm network for buildings and the like comprises a plurality of stations having a smoke detector alarm unit installed in each. Station switching members are connected at each station, and a central control panel is provided with switching members connected with each of the stations and responsive to identifiably indicate alarm signals sent by the station detectors to the control panel. An alert switch is mounted on the control panel and is operably connected with each detector-alarm unit for selectively activating the alarm positioned at one or more of the stations.
20 Citations
10 Claims
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1. A smoke alarm network comprising:
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(a) a plurality of stations; (b) a smoke alarm unit operatively installed at each of said stations, said unit including in a common housing a smoke alarm circuit having an electrical output upon detection of smoke thereby, and an alarm sounding device connected to said circuit within said housing and powered by said electrical output to give audible warning at the station thereof, said smoke alarm unit including means for the remote activation of said sounding device in the absence of smoke; (c) a control panel remote from said stations; (d) alarm indicators on said control panel, said alarm indicators being associated respectively with said stations; (e) switching means having each smoke alarm circuit, each sounding device and means for remote activation thereof, and each alarm indicator connected thereto, said switching means effecting activation of said alarm indicator in response to the electrical output from said smoke alarm circuit, and said switching means cooperating with the means for remote activation of said sounding device; (f) a network power source connected to said switching means and providing operating power therefor; and (g) alert switch means on said control panel, connected to said switching means, and operable to effect the remote activation of selected sounding devices not already activated by the electrical outputs of associated smoke alarm circuits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In a smoke alarm system for a building comprising a plurality of smoke alarm units installed at spaced apart stations in said building, each smoke alarm unit including in a common housing a smoke alarm circuit having an electrical output upon detection of smoke thereby and an alarm sounding device connected to said smoke alarm circuit within said housing and powered by said electrical output to give audible warning at the station thereof, the improvement comprising:
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(a) means for the remote activation of said sounding device in the absence of smoke mounted in the smoke alarm unit thereof; (b) a control panel disposed remote from said stations; (c) an alarm indicator respectively associated with each station and mounted on said panel; (d) switching means having each smoke alarm circuit, sounding device and means for remote activation thereof, and alarm indicator connected thereto;
said switching means effecting activation of said alarm indicator in response to the electrical output from said smoke alarm circuit, and said switching means cooperating with said means for the remote activation of said sounding device;(e) a network power source connected to said switching means and providing operating power therefor; and (f) alert switch means on said control panel and connected to said switching means, and operable to effect the remote activation of the sounding devices of selected stations wherein said sounding devices have not already been activated by the electrical outputs of associated smoke alarm circuits. - View Dependent Claims (10)
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Specification