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US 3,938,429 AGranted
Roof air vent
AssigneePlastic Components, Inc.
InventorRaymond S. B. Perry
Life of this patent
Estimating the term…
Abstract
A roof air vent having rails mountable about an opening in a roof for forming a support bracket for one or more perforated panels. A pair of the rails are parallel to one another for forming tracks in which the panels are inserted.
Claims4
A roof air vent, comprising, in combination:
- a. rails mountable about an opening in a roof for forming a support bracket;
- and
- b. a perforated panel arrangeable in the rails for covering the opening, the rails including a pair of side rail forming, parallel tracks, each of the tracks having a web and a pair of spaced, parallel legs extending codirectionally from the web, with one of the legs being longer than the other of the legs for providing a surface attachable to a building structure, the rails further including a pair of end rails similar in construction to the side rail forming tracks and arrangeable across the ends thereof, the panel consisting of a perforated planar median portion bracketed by a pair of oppositely directed substantially planar parallel flanges connected to the median portion in offset relationship thereto by transition portions.
Dependencies are inferred from the claim text.