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US4576858A
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US
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Material based on a non-woven textile lap which may be used as reinforcement for impermeable coverings
Assignee: Fils dAuguste Chomarat et Cie SA
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Filing: 1985-03-29
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Granted: 1986-03-18
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Expires: 2005-03-29
Abstract
Abstract The present invention relates to a material which may be used as reinforcement for bituminous impermeable coverings of the type constituted by a non-woven fibrous lap. The material being characterized in that the lap is formed by a complex comprising an intermediate layer constituted by a non-woven fabric of polyester. The non-woven fabric serving as a support for glass fibers implanted in its thickness. The fibers project on each side of said support and are folded back thereon.
Inventors
- 👤 Andre Fourezon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:37
CPC Classifications
D; D04; D04H; D04H5/00; D04H5/12; D04H1/00; D04H1/40; D04H1/44; D04H1/45; D04H3/00; D04H3/002; D04H3/004; D04H5/02; D06; D06N; D06N5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249933; Y10T428/24994; Y10T428/249949; Y10T442/00; Y10T442/60; Y10T442/682; Y10T442/684; Y10T442/685
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
65 words
A material which may be used as reinforcement for bituminous impermeable coverings of the type constituted by a non-woven fibrous lap, said lap being formed by a complex comprising an intermediate layer constituted by a non-woven fabric of polyester, said non-woven fabric serving as a support for glass fibers implanted therein, said fibers projecting on each side of said non-woven fabric and folded back thereon.
Claim 2
Dependent Claim
65 words
A material which may be used as reinforcement for bituminous impermeable coverings of the type constituted by a non-woven fibrous lap, said lap being formed by a complex comprising an intermediate layer constituted by a non-woven fabric of polyester, said non-woven fabric serving as a support for glass fibers implanted therein, said fibers projecting on each side of said non-woven fabric and folded back thereon.
Claim 3
Dependent Claim
35 words
The material of claim 1, wherein the lap is a non-woven fabric made from relatively compact continuous filaments of small -thickness, and the glass fibers are implanted in the non-woven fabric by a needling operation.
Claim 4
Dependent Claim
51 words
The material of claim 2, wherein the length of said glass fibers is such that, during said needling operation, said glass fibers are implanted in the lap of said non-woven fabric of polyester and emerge in the form of loops on side opposite to the side where the needles are inserted.
Claim 5
Dependent Claim
21 words
The material of claim 1, wherein after said material has been made, it is calendered and impregnated with an adhesive matter.
References Cited (Backward Citations)
US3044146A
Cited
US3950587A
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FR2243293A1
Cited
US3967032A
Cited
GB1517595A
Cited
US4368228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |