One-piece roof vent device and methods of constructing and...

Details One-piece roof vent device and methods of constructing and... One-piece roof vent device and methods of constructing and...

E - Fixed Constructions

04

F

98/49

E04F 17/02 (2006.01) B21D 53/00 (2006.01) F16K 15/14 (2006.01) F24F 7/02 (2006.01) F24F 7/10 (2006.01)

Patent

CA 1167686

Abstract of the Disclosure A unitary metal vent apparatus for securement to the roof of a building is formed from a single aluminum disk, into the form of a first flange portion, a tubular second portion, a cap-shaped third portion, and a vent hole portion disposed between the tubular portion and the cap portion. Preferably, the apparatus is produced by spinning a tubular protrusion in an aluminum disk, drilling vent holes, and collapsing the end of the tubular protrusion to form a cap-shaped portion. -9-

331349

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