Filter-mask with expiry indication for resisting toxic gas

Filter-mask with expiry indication for resisting toxic gas

The aerophore is formed from respiration valve, face mask body, tie and poison gas filtering tank (box), in which the rear portion of gas filtering tank (box) is equipped with fixedly-mounted sensor,the alarm device is fixed on the exterior of said gas filtering tank (box), and the sensor and the al...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: QINHUA LI, TAISHUN WU, SONGLIN LI
Format: Patent
Sprache:eng
Schlagworte:
ALARM SYSTEMS
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
FIRE-FIGHTING
HUMAN NECESSITIES
LIFE-SAVING
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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Beschreibung
Zusammenfassung:The aerophore is formed from respiration valve, face mask body, tie and poison gas filtering tank (box), in which the rear portion of gas filtering tank (box) is equipped with fixedly-mounted sensor,the alarm device is fixed on the exterior of said gas filtering tank (box), and the sensor and the alarm device are connected by means of wire. Said sensor is a gas-sensory element, and when the filtering material being in the gas-filtering tank (box) is saturated with adsorbed poison gas, the alarm device can be started to give out alarm signal.