Arrangement to counteract or prevent spreading of fire or smoke

Details Arrangement to counteract or prevent spreading of fire or smoke Arrangement to counteract or prevent spreading of fire or smoke

1981-07-10

1983-11-01

Makay, Albert J.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

137253, 52168, F16K 900

Patent

active

044124775

ABSTRACT:
An arrangement to counteract or prevent spreading of fire, smoke or undesired gases through at least one passage, such as a ventilating duct, in a building. Said arrangement comprises a device adapted to keep the passage open normally but to close the passage when there is a risk of said spreading to occur. Said passage comprises at least one portion running in a drain trap-like path and said device comprises at least one supply means to supply, when there is a risk of said spreading to occur, a fluid to said drain trap-like portion in order to completely or partly fill the same while providing said closure of the passage.

REFERENCES:
patent: 1609525 (1926-12-01), Moldenhauer
patent: 3756137 (1972-02-01), Scharres
patent: 4075798 (1978-02-01), Tazaki

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