US3899622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated fabric
Assignee: Individual
•
Filing: 1973-07-20
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Granted: 1975-08-12
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Expires: 1993-07-20
Abstract
Abstract A composite sheet for use in membrane type roof constructions or the like comprises a foraminous web formed of a plurality of fibers coated with a plastic material and heat sealed to a compatible thin film of plastic sheet material. The thin film sheet material is preferably transparent, so that the composite sheet is transparent through the openings in the foraminous web.
Inventors
- 👤 David H Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:47
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B27/32; B32B27/322; B32B2255/00; B32B2255/02; B32B2255/26; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/40; B32B2307/412; B32B2419/00; B32B2419/06; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/133; Y10T442/138; Y10T442/143; Y10T442/184; Y10T442/191
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
77 words
A COMPOSITE SHEET MATERIAL COOMPOSING A FORAMINOUS WEB FORMED OF A PLURALITY OF FIBREES DEFINING A PLURALITY OF OPENINGS IN THE WEB AND A TIN FILM OF TRANSPARENT POLYTETRAFLUOROETHYLENE SHEET MATERIAL HAVING A PAIR OF OPPOSITE SIDES, SAID FIBERS BEING COATED WITH POLYTERAFLUOROETHYLENE, AND SAID POLYTETRAFLUKOROETHYLENE SHEET BEING SECURED ON ONE SIDE THEREOF TO SAID POLYTETRAFLUOROETHYLENE COATING ON SAID FIBRES AND EXTENDING ACROSS SAID OPENINGS TO FORM SAID COMPOSITE SHEET AND WHEREBY SAID COMPOSITE SHEET IS TRANSPARENT.
Claim 2
Dependent Claim
77 words
A COMPOSITE SHEET MATERIAL COOMPOSING A FORAMINOUS WEB FORMED OF A PLURALITY OF FIBREES DEFINING A PLURALITY OF OPENINGS IN THE WEB AND A TIN FILM OF TRANSPARENT POLYTETRAFLUOROETHYLENE SHEET MATERIAL HAVING A PAIR OF OPPOSITE SIDES, SAID FIBERS BEING COATED WITH POLYTERAFLUOROETHYLENE, AND SAID POLYTETRAFLUKOROETHYLENE SHEET BEING SECURED ON ONE SIDE THEREOF TO SAID POLYTETRAFLUOROETHYLENE COATING ON SAID FIBRES AND EXTENDING ACROSS SAID OPENINGS TO FORM SAID COMPOSITE SHEET AND WHEREBY SAID COMPOSITE SHEET IS TRANSPARENT.
Claim 3
Dependent Claim
78 words
The sheet material as defined in claim 1 wherein said film of sheet material is formed of a polytetrafluoroethylene material having a predetermined melting temperature and said coating material comprises an inner coating of a polytetrafluoroethylene material surrounding said fibers and having a melting temperature higher than said predetermined melting temperature and an outer coating of a polytetrafluoroethylene material having a melting temperature substantially equal to that of said sheet material and being heat sealed to said film.
Claim 4
Dependent Claim
29 words
The sheet material as defined in claim 1 wherein said web is formed of fiberglass and has a silicon coating applied thereto prior to coating by said polytetra-fluoroethylene material.
Claim 5
Dependent Claim
19 words
The sheet material as defined in claim 3 wherein said coating has a plurality of glass beads embedded therein.
Claim 6
Dependent Claim
18 words
The sheet material as defined in claim 1 wherein said web comprises an unwoven foraminous scrim of fiberglass.
Claim 7
Dependent Claim
18 words
The sheet material as defined in claim 1 wherein said web comprises a woven foraminous sheet of fiberglass.
Claim 8
Dependent Claim
83 words
The sheet material as defined in claim 1 wherein said polytetrafluoroethylene coating comprises a first inner coating of a first polytetraflurorethylene material having a melting temperature greater than the melting temperaure of said film and a second outer coating of a second polytetrafluoroethylene material having substantially the same melting temperature as said film, whereby said film and second coating may be heat sealed together to secure said web to said film without exposing the fibers of said web during the heat sealing operation.
Claim 9
Dependent Claim
20 words
The sheet material as defined in claim 7 wherein said inner coating has a plurality of glass beads embedded therein.
Claim 10
Dependent Claim
56 words
The sheet material as defined in claim 1 wherein said film of polytetrafluoroethylene sheet material comprises inner and outer polytetrafluoroethylene films, said inner having a half-silvered metallic surface formed thereon and being bonded to said outer film through said metallic surface, whereby said film of polytetrafluoroethylene sheet material is relatively transparent and will reflect solar heat.
Claim 11
Dependent Claim
84 words
A composite sheet material for use as a roof membrane or the like in building constructions which comprises a foraminous web of fiberglass formed from a plurality of fibers defining a plurality of openings in the web, and a thin film of transparent polytetrafluoroethylene having a pair of opposite sides, the fibers in said fiberglass web being coated with polytetrafluoroethylene and said film being heat sealed on one side thereof to said coating thereby to extend across said openings to form said composite sheet.
Claim 12
Dependent Claim
84 words
A composite sheet material for use as a roof membrane or the like in building constructions which comprises a foraminous web of fiberglass formed from a plurality of fibers defining a plurality of openings in the web, and a thin film of transparent polytetrafluoroethylene having a pair of opposite sides, the fibers in said fiberglass web being coated with polytetrafluoroethylene and said film being heat sealed on one side thereof to said coating thereby to extend across said openings to form said composite sheet.
Claim 13
Dependent Claim
77 words
The sheet material as defined in claim 10 wherein said film of sheet material is formed of a polytetrafluoroethylene material having a predetermined melting temperature and said coating material comprises an inner coating of a polytetrafluoroethylene material surrounding said fibers and having a melting temperature greater than said predetermined melting temperature, and an outer coating of a polytetrafluoroethylene material having a melting temperature substantially equal to that of said sheet and being heat sealed to said sheet.
Claim 14
Dependent Claim
29 words
The sheet material as defined in claim 11 wherein said web is formed of fiberglass and has a silicon coating applied thereto prior to coating with said inner coating.
Claim 15
Dependent Claim
20 words
THE SHEET MATERIAL AS DEFINED IN CLAIM 12 WHEREIN SAID INNER COATING HAS A PLURALITY OF GLASS BEADS EMBEDDED THEREIN.
Claim 16
Dependent Claim
18 words
The sheet material as defined in claim 10 wherein said web comprises an unwoven foraminous scrim of fiberglass.
Claim 17
Dependent Claim
18 words
The sheet material as defined in claim 10 wherein said web comprises a woven foraminous sheet of fiberglass.
Claim 18
Dependent Claim
46 words
The sheet material as defined in claim 10 wherein the openings in said foraminous web occupy at least 10% of the area of said web whereby said composite sheet is transparent and will permit infrared heat to pass therethrough from the interior of said building construction.
Claim 19
Dependent Claim
42 words
The sheet material as defined in claim 16 wherein said film is between 2 and 5 mils thick, said coating on said fiber is between 2 and 5 mils thick, and the spacing between fibers in said web is approximately 1/4 ''''.
Claim 20
Dependent Claim
23 words
The sheet material as defined in claim 17 wherein said fibers are 1/8 '''' in diameter and are spaced 3/8 '''' on center.
Claim 21
Dependent Claim
78 words
The sheet material as defined in claim 10 wherein said thin film of transparent polytetrafluoroethylene comprises inner and outer polytetrafluoroethylene films, said inner film being secured on one side thereof to said web and having a half-silvered metallic surface applied to the other side thereof, said inner and outer films being bonded together through said metallic surface whereby said film of plastic sheet material remains relatively transparent to light and infrared heat and yet will reflect solar heat.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |