F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
F24F 7/02 (2006.01)
Patent
CA 2696466
Disclosed is a cover for a tubular duct extending from a planar roof surface. The cover comprises a cap, a skirt and a closure. In use: the cap is disposed outwardly from said duct, to define a headspace outside said duct and an annular space surrounding the headspace; the skirt extends from the rim of the cap in surrounding, spaced relation to said duct; and the closure extends from the terminus of the skirt to said duct and is disposed in spaced relation to said surface. The skirt and closure have vanes formed therein. The vanes are oriented such that: precipitation driven by wind through the skirt into the interior of the cap is directed, as it passes through the skirt, towards the roof; and precipitation driven by wind through the closure into the interior of the cap is directed, as it passes through the closure, away from the duct.
Airturn Products Inc.
Ridout & Maybee Llp
LandOfFree
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