Patent US3938429A successfully refreshed from Google Patents.
US3938429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof air vent
Assignee: ARLINGTON SALES Inc A CORP OF FL
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Filing: 1971-09-19
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Granted: 1976-02-17
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Expires: 1991-09-19
Abstract
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.
Inventors
- 👤 Raymond S. B. Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:28
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/15; E04D13/152; F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/068
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
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.
Claim 2
Dependent Claim
142 words
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.
Claim 3
Dependent Claim
47 words
A structure as defined in claim 1, wherein there is a plurality of perforated panels arranged in the guide rails, with adjacent flanges of the panels overlapping one another, the flanges being arranged transverse of the rails, and abutting the other of the legs of the rails.
Claim 4
Dependent Claim
29 words
A structure as defined in claim 1, in combination with a roof overhang having a ventilator opening provided in the soffit thereof, the rails being arranged about the opening.
Claim 5
Dependent Claim
32 words
A structure as defined in claim 1, wherein there is a plurality of perforated panels arranged in the guide rails, with the flanges of the panels engaging the other of the legs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |