1976-02-09
1977-07-05
King, Lloyd L.
98 43R, F24F 700, F24F 1300
Patent
active
040332462
ABSTRACT:
A system for venting smoke and fumes from selected floors of a multi-story building comprising a vertical smoke pipe or shaft which extends from the basement to the roof of the building and a plurality of vent units disposed along the smoke shaft, one being associated with each floor of the building. Each unit includes a hinged door that opens by gravity force and is normally maintained closed by a latch mechanism that may be operated remotely by electrical or pneumatic means or may be operated manually. A thin metallic gasket seals the door to its frame and further functions as a spring means for urging the door open when the latch mechanism is released.
REFERENCES:
patent: 1894930 (1933-01-01), Hueglin
patent: 1935216 (1933-11-01), Sievert
patent: 1971920 (1934-08-01), Ross
patent: 2314003 (1943-03-01), Mader
patent: 2564971 (1951-08-01), Harding
patent: 2924166 (1960-02-01), Gerlitz
patent: 3951051 (1976-04-01), Dry
Couture Paul A.
Jentoft Arthur P.
King Lloyd L.
Wasco Products, Inc.
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