Alarm origination latching system and method
First Claim
1. A selective hazardous condition detector, comprising:
- a) means for interconnecting said selective hazardous condition detector to a second selective hazardous condition detector;
b) means for detecting a select hazardous condition;
c) means for generating an alarm signal corresponding to a detected select hazardous condition;
d) memory means for recognizing said alarm signal;
e) latch means switchable between an unlatched state and a latched state, said latched state being established in response to said alarm signal and said latched state existing for a preset time period;
f) means for selectively actuating said memory means and switching said latch means to said latched state; and
g) actuatable reset means for resetting the state of said latch means;
h) whereupon actuating said latch reset means switches said latch means from the latched to the unlatched state after said preset time period while switching the latched means to said unlatched state immediately in said second selective hazardous condition detector.
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Accused Products
Abstract
An embodiment of the invention provides a method including detecting a select hazardous condition by at least one triggering alarm unit of a plurality of interconnected hazardous condition alarm units. An actuatable latch in the triggering alarm unit is switched from an unlatched state to a latched state. An audible alert is generated in all of the interconnected alarm units. A test switch is actuated to identify the triggering alarm unit. Actuating the test switch disables the audible alert in each alarm unit having an actuatable latch in the unlatched state. A reset switch is actuated in only one of the alarm units to reset the actuatable latch in each of the alarm units to the unlatched state.
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Citations
20 Claims
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1. A selective hazardous condition detector, comprising:
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a) means for interconnecting said selective hazardous condition detector to a second selective hazardous condition detector; b) means for detecting a select hazardous condition; c) means for generating an alarm signal corresponding to a detected select hazardous condition; d) memory means for recognizing said alarm signal; e) latch means switchable between an unlatched state and a latched state, said latched state being established in response to said alarm signal and said latched state existing for a preset time period; f) means for selectively actuating said memory means and switching said latch means to said latched state; and g) actuatable reset means for resetting the state of said latch means; h) whereupon actuating said latch reset means switches said latch means from the latched to the unlatched state after said preset time period while switching the latched means to said unlatched state immediately in said second selective hazardous condition detector. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system comprising at least a first and a second interconnected hazardous condition alarm units, each of said alarm units comprising:
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at least one hazardous condition detector; a horn for generating an audible alert in response to detection of a select hazardous condition by at least one of said alarm units; a signal communication member for communicating a signal between said at least first and second alarm units, said signal being sent in response to said detection of said select hazardous condition, and said signal causing activation of said horn; an actuatable latch switchable between an unlatched state and a latched state, said latched state being established in response to said detection of said select hazardous condition; a test switch switchable between a first position and a second position, said second position disabling a horn of each alarm unit of said alarm units comprising an actuatable latch in said unlatched state; and a reset switch for resetting said actuatable latch in every alarm unit of said alarm units to said unlatched state. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method comprising:
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a) detecting a select hazardous condition by at least one triggering alarm unit of a plurality of interconnected hazardous condition alarm units; b) switching an actuatable latch in said at least one triggering alarm unit from an unlatched state to a latched state; c) generating an audible alert in said plurality of interconnected hazardous condition alarm units; d) actuating a test switch to identify said at least one triggering alarm unit, said actuating of said test switch comprising disabling said audible alert in each alarm unit of said plurality of interconnected hazardous condition alarm units comprising an actuatable latch in said unlatched state; and e) actuating a reset switch in only one alarm unit of said plurality of interconnected hazardous condition alarm units to reset said actuatable latch in each of said plurality of interconnected hazardous condition alarm units to said unlatched state. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification