US4877665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lining material for pipe lines
Assignee: Ashimori Industry Co Ltd
•
Filing: 1987-10-30
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Granted: 1989-10-31
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Expires: 2007-10-30
Abstract
Abstract A lining material for pipelines such as gas conduits, city water pipelines, sewage pipelines, and petroleum pipelines which having a structure wherein a layer of bulky yarns is fastened to either one of the inner and outer surfaces of a tubular textile jacket and an air-impervious layer made of a rubber or a synthetic resin is bonded to the other surface of the jacket, and exhibits excellent shape-maintaining property against external pressure and earthquake-resistance after being applied to the pipelines.
Inventors
- 👤 Kumao Higuchi
- 👤 Akio Morinaga
- 👤 Masahiro Seshimo
- 👤 Hitoshi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B1/00; B32B1/08; B32B25/00; B32B25/10; B32B27/36; B32B5/00; B32B5/02; B32B5/08; D; D03; D03D; D03D15/00; D03D15/20; D03D15/283; D03D3/00; D03D3/02; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2367/00; D10; D10B; D10B2401/00; D10B2401/06; D10B2401/062; D10B2401/063; D10B2505/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
111 words
A tubular lining material for pipelines utilizable in a pipe-lining method wherein the tubular lining material is bonded onto the inner surface of a pipeline, which material comprises: (a) a tubular textile jacket having an inner and outer surface, said tubular textile jacket comprising a plurality of interwoven yarns; (b) a plurality of bulky yarns interwoven with said plurality of yarns along either one of the inner or outer surface of the tubular textile jacket, said plurality of bulky yarns being proportionably larger in size than said plurality of yarns, and (c) an air-impervious layer bonded to the other surface of the tubular textile jacket than said plurality of bulky yarns.
Claim 2
Dependent Claim
111 words
A tubular lining material for pipelines utilizable in a pipe-lining method wherein the tubular lining material is bonded onto the inner surface of a pipeline, which material comprises: (a) a tubular textile jacket having an inner and outer surface, said tubular textile jacket comprising a plurality of interwoven yarns; (b) a plurality of bulky yarns interwoven with said plurality of yarns along either one of the inner or outer surface of the tubular textile jacket, said plurality of bulky yarns being proportionably larger in size than said plurality of yarns, and (c) an air-impervious layer bonded to the other surface of the tubular textile jacket than said plurality of bulky yarns.
Claim 3
Dependent Claim
40 words
A lining material as recited in claim 1 wherein said plurality of bulky yarns is disposed along the inner surface of said tubular textile jacket; and said air-impervious layer is disposed along the outer surface of said tubular textile jacket.
Claim 4
Dependent Claim
25 words
A lining material according to claim 1, wherein the height of said plurality of bulky yarns is within the range of 2-10 mm in diameter.
Claim 5
Dependent Claim
28 words
A lining material according to claim 1, wherein at least 50% of the surface area of the tubular textile jacket is covered by said plurality of bulky yarns.
Claim 6
Dependent Claim
53 words
A lining material as recited in claim 1 wherein said plurality of interwoven yarns further comprises: warps which are disposed perpendicular to the longitudinal length of the tubular lining; and wefts which are disposed parallel to the longitudinal length of the tubular lining and interworn with said warps to form said textile jacket.
Claim 7
Dependent Claim
22 words
A lining material as recited in claim 5 wherein said wefts further comprises fastening wefts for securing said plurality of bulky yarns.
Claim 8
Dependent Claim
32 words
A lining material as recited in claim 6 wherein said warps further comprises fastening warps disposed between said bulky yarns and overlapping said fastening wefts for securing said plurality of bulky yarns.
Claim 9
Dependent Claim
14 words
A lining material as recited in claim 1 wherein said airimpervious layer is rubber.
Claim 10
Dependent Claim
15 words
A lining material as recited in claim 1 wherein said air-impervious layer is synthetic resin.
Claim 11
Dependent Claim
19 words
A lining material as recited in claim 1 wherein said plurality of interwoven yarns is a plain fabric weave.
Claim 12
Dependent Claim
17 words
A lining material as recited in claim 1 wherein said plurality of interwoven yarns is a twill.
Claim 13
Dependent Claim
38 words
A lining material as recited in claim 1 wherein said plurality of bulky yarns is disposed along the outer surface of said textile jacket; and said air-impervious layer is disposed along the inner surface of said textile jacket.
References Cited (Backward Citations)
US3817288A
Cited
US3866631A
Cited
US4276908A
Cited
US4407885A
Cited
US4388365A
Cited
US4576205A
Cited
JPS59225921A
Cited
US4553568A
Cited
US4684556A
Cited
US4723579A
Cited
US4681783A
Cited
US4724178A
Cited
US4600615A
Cited
US4686126A
Cited
JPH0675476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |