F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
98/41
F24F 13/00 (2006.01) F24F 7/00 (2006.01)
Patent
CA 1081528
VENT Abstract of the Disclosure 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 ehe 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 hinge 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. 1.
280330
Couture Paul A.
Jentoft Arthur P.
Ogilvy Renault
Wasco Products Inc.
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