US3817009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aero-dynamic roof
Assignee: Dynamit Nobel AG
•
Filing: 1972-01-31
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Granted: 1974-06-18
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Expires: 1992-01-31
Abstract
Abstract In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways maintained between said roof structure and said roofing material and an air conduit means communicating with said air passageways and the space above said roof; a roof structure comprising a layer of ballast material disposed on said roof at a distance of about 1 meter from the edge of said roof having a width of between about 1 and 3 meters; a roof construction comprising a layer of an elastomeric sheet material secured to the roof only at the edges thereof by a mechanical fastening means or a solvent weld securing said elastomeric sheet initially to a suitably prepared galvanized steel sheet and thence to a building structure.
Inventors
- 👤 G Brent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:39
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/17; E04D13/14; E04D13/143
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
90 words
In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways defined by material creating a resistance to air flow, said passageways maintained between said roof structure and said roofing material and an air conduit means communicating with only said air passageways and the space above the said roof only at the roof perimeter within the space defined by a roof parapet, said roofing material comprising an elastomeric material, said elastomeric material having a loosely laid ballast disposed thereover.
Claim 2
Dependent Claim
90 words
In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways defined by material creating a resistance to air flow, said passageways maintained between said roof structure and said roofing material and an air conduit means communicating with only said air passageways and the space above the said roof only at the roof perimeter within the space defined by a roof parapet, said roofing material comprising an elastomeric material, said elastomeric material having a loosely laid ballast disposed thereover.
Claim 3
Dependent Claim
43 words
An improvement according to claim 1 wherein said elastomeric sheet is secured to the roof structure only at the edges of the roof within a vertical riser on the edge of said roof and around the periphery of interruptions along the roof surface.
Claim 4
Dependent Claim
20 words
An improvement according to claim 2 wherein air passageways are provided in an insulation lamella disposed over said roof structure.
Claim 5
Dependent Claim
33 words
An improvement according to claim 2 wherein insulation is provided over said roof structure to define air passageways and a layer or mat is disposed over said insulation and beneath said elastomeric sheet.
Claim 6
Dependent Claim
38 words
An improvement according to claim 2 wherein said elastomeric sheet is a polyvinyl chloride sheet disposed beneath a layer of loose ballast material, said polyvinyl chloride sheet being loosely disposed over the major portion of the roof surface.
Claim 7
Dependent Claim
20 words
An improvement according to claim 3 wherein said insulation is in the form of foraminous material containing air passageways therein.
Claim 8
Dependent Claim
22 words
An improvement according to claim 3 wherein said insulation contains criss-crossing defined air channels across the length and width of said insulation.
Claim 9
Dependent Claim
35 words
An improvement according to claim 1 wherein there are a plurality of air conduit means disposed along a portion of said elastomeric sheet, said air conduit means being protected from rain, snow and other precipitation.
Claim 10
Dependent Claim
27 words
An improvement according to claim 8 wherein said air conduit means are in the form of check valves which regulate the relativE pressures upon the elastomeric sheet.
Claim 11
Dependent Claim
47 words
An improvement according to claim 2 wherein said elastomeric sheet is secured to said building by being initially solvent-bonded to a second elastomeric sheet itself hot-bonded to a stiff metal sheet, said second elastomeric sheet and said stiff metal sheet being mechanically secured to the roof structure.
Claim 12
Dependent Claim
19 words
An improvement according to claim 1 wherein said elastomeric sheet is a liquid impermeable but vapor permeable continuous sheet.
Claim 13
Dependent Claim
21 words
An improvement according to claim 1 wherein there are oppositely disposed air conduit means on either side of the roof structure.
Claim 14
Dependent Claim
94 words
In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways defined by material creating a resistance to air flow, said passageways maintained between said roof structure and said roofing material and an air conduit means communicating with only said air passageways and the space above the said roof only at the roof perimeter whithin the space defined by a roof parapet, said roofing material comprising an elastomeric sheet of butyl rubber, said butyl rubber sheet having disposed thereover loosely laid ballast material.
Claim 15
Dependent Claim
94 words
In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways defined by material creating a resistance to air flow, said passageways maintained between said roof structure and said roofing material and an air conduit means communicating with only said air passageways and the space above the said roof only at the roof perimeter whithin the space defined by a roof parapet, said roofing material comprising an elastomeric sheet of butyl rubber, said butyl rubber sheet having disposed thereover loosely laid ballast material.
Claim 16
Dependent Claim
91 words
In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways defined by material creating a resistance to air flow, said passageways maintained between said roof structure and said roofing material and an air conduit means communicating with only said air passageways and the space above the said roof only at the perimeter within the space defined by a roof parapet, said roofing material comprising an elastomeric sheet of neoprene rubber, said sheet having disposed thereover loosely laid ballast material.
Claim 17
Dependent Claim
91 words
In a roofing assembly comprising a roof structure and roofing material disposed thereover, the improvement which comprises generally uniformly disposed air passageways defined by material creating a resistance to air flow, said passageways maintained between said roof structure and said roofing material and an air conduit means communicating with only said air passageways and the space above the said roof only at the perimeter within the space defined by a roof parapet, said roofing material comprising an elastomeric sheet of neoprene rubber, said sheet having disposed thereover loosely laid ballast material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |