Communications: electrical – Land vehicle alarms or indicators
Patent
1997-08-18
1999-10-12
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
340438, 340449, 3405731, 340588, 340584, 340522, 340667, B60Q 100
Patent
active
059660708
ABSTRACT:
The present invention, in one form, is an alarm system for detecting the presence of a child locked within a parked automobile during extreme temperatures. The alarm system includes a temperature detecting element and a child detecting element electrically coupled to an AND gate. The temperature detecting element transmits an extreme temperature signal to the AND gate if the temperature within the automobile exceeds a pre-selected maximum temperature. The child detecting element transmits a child detection signal to the AND gate when it detects a child within the automobile. The AND gate, upon receiving both the child detection signal and the extreme temperature signal, transmits and alarm signal.
REFERENCES:
patent: 4107941 (1978-08-01), Hamilton
patent: 5054686 (1991-10-01), Chuang
patent: 5416728 (1995-05-01), Rudzewicz et al.
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