Pyrotechnic cap with moisture indicator

Details Pyrotechnic cap with moisture indicator Pyrotechnic cap with moisture indicator

1979-01-10

1981-04-28

Nelson, Peter A.

Ammunition and explosives

Igniting devices and systems

Heat, friction, or chemical primers or ignitors

102 29, 149 15, F42C 1908

Patent

active

042638500

ABSTRACT:
An improved pyrotechnic cap capable of being activated by the radiant energy from an adjacent flashlamp. The cap includes a light-transmitting plastic container with a quantity of pyrotechnic composition hermetically sealed therein. Receipt of the described radiant energy causes activation of the composition whereby the cap produces an audible signal of high intensity (e.g. 158 to 164 decibels at 25 centimeters). The improvement comprises adding a moisture-indicating material (e.g. cobalti, cobaltous cyanide) to the cap to detect harmful quantities of moisture present within the container and change color in a discernible manner as a result of said detection.

REFERENCES:
patent: 2036511 (1936-04-01), Vanderpool et al.
patent: 2909121 (1959-10-01), Gernert et al.
patent: 2985979 (1961-05-01), Doyle et al.
patent: 3118798 (1964-01-01), Winckler
patent: 3667992 (1972-06-01), Brown et al.
patent: 3849923 (1974-11-01), Hawkins
patent: 4130082 (1978-12-01), Bouchard et al.
patent: 4160062 (1979-07-01), Gawlick et al.

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