US4010577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof drain system
Assignee: Individual
•
Filing: 1976-05-03
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Granted: 1977-03-08
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Expires: 1996-05-03
Abstract
Abstract A roof drain system in which an air duct is mounted on a building to extend along the lower edge of the roof to have the water from the roof flow thereover, a blower communicates with the air duct to supply air under above atomspheric pressure thereto, and the duct has apertures along the length thereof for passing air in jets directed laterally outwardly of the building to substantially disrupt the water into droplets as it flows across the air duct and thereby distribute the droplets in a wide band outwardly of the roof line of the building. Apparatus for automatically operating the blower means when it rains, is advantageously provided.
Inventors
- 👤 Gordon R. Stalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:01
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/0404; E04D13/0459; E04D2013/0463
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A roof drain system comprising elongated housing means defining air duct having an upper wall portion and adapted for attachment to a building to extend lengthwise of at least a substantial portion of the lower edge of the roof whereby rain water from the roof flows over the upper wall portion of the housing means, blower means having an outlet communicating with said air duct for supplying air under super atmospheric pressure thereto, said housing means having aperture means along the length thereof for passing air from the air duct in streams having a substantial component laterally outwardly from the building to substantially disrupt the water as it flows over the housing means and distribute the water in the form of droplets over a wide band outwardly of the roof line of the building, and means for actuating said blower means.
Claim 2
Dependent Claim
141 words
A roof drain system comprising elongated housing means defining air duct having an upper wall portion and adapted for attachment to a building to extend lengthwise of at least a substantial portion of the lower edge of the roof whereby rain water from the roof flows over the upper wall portion of the housing means, blower means having an outlet communicating with said air duct for supplying air under super atmospheric pressure thereto, said housing means having aperture means along the length thereof for passing air from the air duct in streams having a substantial component laterally outwardly from the building to substantially disrupt the water as it flows over the housing means and distribute the water in the form of droplets over a wide band outwardly of the roof line of the building, and means for actuating said blower means.
Claim 3
Dependent Claim
41 words
A roof drainage system according to claim 1 wherein said housing means includes lip means extending along the housing means and overlying said aperture means to deflect the water flowing over the upper wall portion laterally outwardly of said aperture means.
Claim 4
Dependent Claim
40 words
A roof drain system according to claim 1 wherein said aperture means are formed in a downwardly and outwardly slanting wall portion of said housing means and operate to direct the air jets upwardly and outwardly of said housing means.
Claim 5
Dependent Claim
31 words
A roof drain system according to claim 1 wherein said aperture means comprises a plurality of small individual apertures arranged in closely spaced relation in a row along said housing means.
Claim 6
Dependent Claim
25 words
A roof drain system according to claim 4 wherein said holes have a diameter of about .040 inches and are spaced apart about 0.125 inches.
Claim 7
Dependent Claim
28 words
A roof drain system according to claim 1 including means for sensing when it is raining, and means responsive to said sensing means for operating said blower means.
Claim 8
Dependent Claim
66 words
A roof drain system according to claim 1 wherein said blower means includes a multiple speed motor for delivering air at a first rate to said housing means at a first motor speed and for delivering air at a second relatively higher rate at a second motor speed higher than said first motor speed, and control means for selectively operating said motor at said different speeds.
Claim 9
Dependent Claim
90 words
A roof drain system according to claim 1 wherein said blower means includes a multiple speed motor for delivering air at a first rate of said housing means at a first motor speed and for delivering air at a second relatively higher rate at a second motor speed higher than said first motor speed, means for sensing the flow of water across the roof, and means controlled by said sensing means for operating said motor at different speeds in accordance with different rates of flow of water across the roof.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |