Patent ID: 6133839
Filing Date: 2000-10-17
Classification: G08B

Abstract:
A warning apparatus comprising:a detector capable of sensing and generating an output signal indicative of a fire in an enclosure having at least one escape exit;a transmitter responsive to the output signal of the detector for transmitting a signal frequency upon receiving the output signal from the detector;at least one distinct alarm carried in a housing remote from the detector and adapted to be fixedly mounted on a surface in the enclosure in close proximity to the escape exit of the enclosure;a receiver, carried with the alarm and responsive to the signal frequency from the transmitter means, the receiver activating the alarm upon receiving the signal frequency from the transmitter means; anda temperature sensor coupled to the alarm and disposed in the housing in a position for sensing the ambient temperature of the surface of the enclosure adjacent to the alarm and indirectly the temperature of an opposing side of the surface, the temperature sensor generating an output signal upon detecting a temperature above a predetermined threshold temperature, the output signal deactivating the alarm to indicate an unsafe state of use of the escape exit.