Emergency ventilation system for biological/chemical contaminati

Details Emergency ventilation system for biological/chemical contaminati Emergency ventilation system for biological/chemical contaminati

1999-03-03

1999-11-09

Kashnikow, Andres

Fire extinguishers

Fluid systems

Distributing systems

169 5, 239270, A62B 1800, A62C 3100

Patent

active

059795654

ABSTRACT:
A dual-emergency response system includes a common supply line that selectively conveys a fire extinguishing fluid to extinguish a fire and conveys life-sustaining air to displace air contaminated by biological or chemical toxins. A valve that distinguishes between the fire extinguishing fluid and the life-sustaining air opens to convey the air, but closes to prevent the fire extinguishing fluid from escaping. The valve is installed alongside an overhead spray nozzle of a fire sprinkler system.

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patent: 4380187 (1983-04-01), Wicks
patent: 5172767 (1992-12-01), Turner et al.
patent: 5720659 (1998-02-01), Wicks
patent: 5862867 (1999-01-01), Adnersson

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