CHEMICALLY ACTIVATED WARNING SYSTEM

An electrically actuated safety alarm system for detecting the presence of toxic gases for use alone or in combination with a conventional gas filter breathing apparatus. Spaced electrodes, at least one of which is coated with a basic nitrogen-containing polymer of high electrical resistance project...

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Bibliographische Detailangaben
1. Verfasser: WALLACE, RICHARD A
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:An electrically actuated safety alarm system for detecting the presence of toxic gases for use alone or in combination with a conventional gas filter breathing apparatus. Spaced electrodes, at least one of which is coated with a basic nitrogen-containing polymer of high electrical resistance project into an electrical conducting medium (e.g., activated charcoal) in a container and is connected in series with signaling means with an audio and/or visual signal. The coating forms electrically conductive quarternary ammonium salts in the presence of predetermined toxic gases to lower the electrical resistance of the polymer to complete the electrical circuit between electrodes through the charcoal and activate the signaling means to generate the signal.