Safety indicating device for flashlights

Details Safety indicating device for flashlights Safety indicating device for flashlights

1994-01-31

1996-01-09

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340636, G08B 1710

Patent

active

054832284

ABSTRACT:
A safety disconnect device for use in detecting a gas in a confined space, such as a flashlight, comprising the use of a catalytic gas recombination material, such as palladium, in conjunction with a heat-sensitive conductive element connected as a switch, in a circuit containing a power supply so that the heat generated by the reaction of the detected gas with a reactant on the surface of the catalytic material will alter the heat-sensitive conductive element to open the circuit.

REFERENCES:
patent: 3630778 (1971-12-01), Kreidl et al.
patent: 3817717 (1974-06-01), Kreidl et al.
patent: 3840403 (1974-10-01), George et al.
patent: 3929422 (1975-12-01), Kreidl et al.
patent: 3930890 (1976-01-01), Dietz
patent: 3939006 (1976-02-01), Kozawa
patent: 5302902 (1994-04-01), Groehl

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