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

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

1978-12-11

1980-07-29

Yuen, Henry C.

98 66R, F24F 1308

Patent

active

042145139

ABSTRACT:
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.

REFERENCES:
patent: 3079853 (1963-03-01), Smith
patent: 3311047 (1967-03-01), Smith
patent: 3593478 (1971-07-01), Mason
patent: 4000688 (1977-01-01), Malott
patent: 4080083 (1978-03-01), Malott

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