Patent JPS4815862U successfully refreshed from Google Patents.
US4428698A
Expired / Lapsed
US
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Geotextile for pavement overlays
Assignee: TEXTILE SYSTEMS AG A Co OF SWITZERLAND
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Filing: 1980-08-21
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Granted: 1984-01-31
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Expires: 2000-08-21
Abstract
Abstract There is disclosed an improved woven geotextile for use immediately under a pavement overlay. It comprises a high bulk entangled yarn interwoven with tape. It has a shrinkage force of less than 100 gm/inch at 300° F. at constant length in both warp and weft directions, most preferably less than 5 gm/inch.
Inventors
- 👤 Jerry C. Murphy
- 👤 Ronald E. Sanders
- 👤 Warren S. Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:20
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/16; E01C11/165; E01C7/00; E01C7/08; E01C7/18; E01C7/187; E01C7/32; E01C7/325
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
An improved resurfaced road comprising (a) a crack-filled old pavement; (b) an asphalt concrete layer above said old pavement; (c) a geotextile between said old pavement and said asphalt layer, for preventing reflective cracking wherein the improvement comprises: said geotextile comprises a core-bulked yarn interwoven with tape fabric firmly embedded between and contacting said old pavement and said asphalt concrete layer, wherein said core-bulked yarn comprises two sets of filaments, said first set being straight to give dimensional stability and forms a core around and through which said second set of filaments is entangled in coils or loops.
Claim 2
Dependent Claim
98 words
An improved resurfaced road comprising (a) a crack-filled old pavement; (b) an asphalt concrete layer above said old pavement; (c) a geotextile between said old pavement and said asphalt layer, for preventing reflective cracking wherein the improvement comprises: said geotextile comprises a core-bulked yarn interwoven with tape fabric firmly embedded between and contacting said old pavement and said asphalt concrete layer, wherein said core-bulked yarn comprises two sets of filaments, said first set being straight to give dimensional stability and forms a core around and through which said second set of filaments is entangled in coils or loops.
Claim 3
Dependent Claim
26 words
The road of claim 1 wherein said geotextile has a shrinkage force of less than 100 gm/inch at constant length in both warp and weft directions.
Claim 4
Dependent Claim
22 words
The geotextile of claim 1, wherein said core-bulked yarn has a first-set/second-set weight ratio in the range of from 5/95 to 60/40.
Claim 5
Dependent Claim
15 words
The geotextile of claim 1, wherein said first and second sets are continuous filament yarns.
Claim 6
Dependent Claim
29 words
The road of claim 1 wherein said geotextile has a melting point greater than 250° F. and is selected from the group consisting of polyolefins, polyesters, polyamides, and polyvinylidene-chlorides.
Claim 7
Dependent Claim
66 words
The road of claim 1, wherein said tapes have width within the range of 0.030 to 0.150 inches; thickness within the range of 0.0005 to 0.0100 inches; denier within the range of 250 to 3000; free shrinkage at 300° F. within the range of 0.0 to 10 percent by ASTM D-2259-77; and elongation at break of more than 35 percent by ASTM D-1682, Grab Strength method.
Claim 8
Dependent Claim
14 words
The road of claim 6, wherein said tapes' elongation is more than 50 percent.
Claim 9
Dependent Claim
14 words
The road of claim 7, wherein said tapes' elongation is more than 60 percent.
Claim 10
Dependent Claim
31 words
The road of claim 1 wherein said geotextile has a retention ability of 0.05 to 15.0 oz/sq. ft. by the Texas Asphalt Retention Text D.O.T. Special specification Item 3099, Fabric Underseal.
Claim 11
Dependent Claim
49 words
The road of claim 1, wherein said core-bulked yarn has tenacity in the range of from 0.5 to 15 gpd; elongation in the range from 10 to 400 percent; filament deniers in the range from 2 to 10 d.p.f.; and yarn denier in the range from 250 to 5,000.
Claim 12
Dependent Claim
13 words
The road of claim 1, wherein said core-bulked yarn is a filling yarn.
Claim 13
Dependent Claim
18 words
The road of claim 11, wherein said filling yarn is predominantly located on one side of said geotextile.
References Cited (Backward Citations)
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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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |