US3791097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of detecting and repairing a structural roof damaged by subsurface moisture
Assignee: Tremco LLC
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Filing: 1973-01-19
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Granted: 1974-02-12
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Expires: 1993-01-19
Abstract
Abstract A method under the title of the application, which involves generating an infrared image of a roof from an airborne position, from infrared radiation emitted by the roof in the spectral band from about 2 to about 14 microns, preferably from about 8 to 14 microns, thus locating roof portions corresponding to areas of anomalous radiation which are potentially moisture laden areas of the roof, and effecting repairs of those roof portions where the presence of subsurface moisture is confirmed by coring or other inspection procedures.
Inventors
- 👤 J Cassella
- 👤 J Cavalier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:27
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/72; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3563
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A method of detecting and repairing a roof damaged by subsurface moisture comprising detecting from an airborne position infrared radiation emitted from the roof in the range of about 2 to about 14 microns in wavelength generating a visible image from the detected radiation photographing the image to provide a permanent record thereof locating roof portions of said image corresponding to areas of anomalous radiation potentially attributable to subsurface moisture confirming the presence or absence of subsurface moisture in said roof portions and repairing those roof portions where the presence of subsurface moisture is confirmed.
Claim 2
Independent Claim
95 words
A method of detecting and repairing a roof damaged by subsurface moisture comprising detecting from an airborne position infrared radiation emitted from the roof in the range of about 2 to about 14 microns in wavelength generating a visible image from the detected radiation photographing the image to provide a permanent record thereof locating roof portions of said image corresponding to areas of anomalous radiation potentially attributable to subsurface moisture confirming the presence or absence of subsurface moisture in said roof portions and repairing those roof portions where the presence of subsurface moisture is confirmed.
Claim 3
Dependent Claim
30 words
The method as defined in claim 1 wherein said detecting step is conducted at an elevation within the range of from about 300 to about 1,500 feet above the roof.
Claim 4
Dependent Claim
35 words
The method as defined in claim 1 wherein said step of confirming the presence or absence of subsurface moisture comprises cutting one or more cores from the roof and examining the subsurface structure for moisture.
Claim 5
Dependent Claim
42 words
The method as defined in claim 1 wherein the step of locating roof portions corresponding to said areas of anomalous radiation comprises generating an actual photograph of the roof and locating on it roof portions corresponding to said areas of anomalous radiation.
Claim 6
Dependent Claim
42 words
The method as defined in claim 4 wherein said detecting step and said step of generating an actual photograph of the roof are both conducted at an elevation within the range of from about 300 to about 1,500 feet above the roof.
Claim 7
Dependent Claim
28 words
The method as defined in claim 1 wherein said detecting step is conducted with respect to emitted radiation in the range of about 8 to about 14 microns.
Claim 8
Dependent Claim
28 words
The method as defined in claim 5 wherein said detecting step is conducted with respect to emitted radiation in the range of about 8 to about 14 microns.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |