Smoke alarm having temporary disabling features
First Claim
Patent Images
1. A smoke alarm device, comprising:
- a housing;
means for supplying electrical power in said housing;
means in said housing for detecting smoke and producing a sensible signal in response to detected smoke; and
manually-actuated control means cooperating with said signal-producing means to temporarily deactivate the same and to automatically reactivate the same after a predetermined time interval, said control means including;
an integrated circuit timer having an input adapted to receive an electrical signal to initiate timing and having an output adapted to produce an electrical output signal upon completion of a predetermined time interval;
electrically-actuated means connected to said smoke detector and sensible signal producing means and operable in alternate modes to permit or to prevent a sensible signal from being produced in response to sensed smoke;
means for latching said electrically-actuated means in its signal preventing mode;
momentary-contact switch means in said housing coupled to said timer and said latching means for producing said timer input signal and for actuating said latching means; and
means connected to said timer output and said latching means for deactivating said latching means at the completion of said time delay and thereby reactivating said smoke detecting and sensible signal producing means.
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Abstract
A smoke alarm having means for detecting smoke and producing a signal in response to the detected smoke is provided with a manually-actuated control which cooperates with the signal producing means to temporarily deactivate the same and to automatically reactivate the same after a predetermined time delay. A temperature responsive override switch is provided to actuate the signal in the event of a fire during the time delay. Thus, a homeowner is able to temporarily deactivate the smoke alarm, such as duringcooking, parties, showering, etc. to thereby prevent the alarm from going off in response to non-fire conditions.
63 Citations
8 Claims
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1. A smoke alarm device, comprising:
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a housing; means for supplying electrical power in said housing; means in said housing for detecting smoke and producing a sensible signal in response to detected smoke; and manually-actuated control means cooperating with said signal-producing means to temporarily deactivate the same and to automatically reactivate the same after a predetermined time interval, said control means including; an integrated circuit timer having an input adapted to receive an electrical signal to initiate timing and having an output adapted to produce an electrical output signal upon completion of a predetermined time interval; electrically-actuated means connected to said smoke detector and sensible signal producing means and operable in alternate modes to permit or to prevent a sensible signal from being produced in response to sensed smoke; means for latching said electrically-actuated means in its signal preventing mode; momentary-contact switch means in said housing coupled to said timer and said latching means for producing said timer input signal and for actuating said latching means; and means connected to said timer output and said latching means for deactivating said latching means at the completion of said time delay and thereby reactivating said smoke detecting and sensible signal producing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification