US3913624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible reinforcing structures
Assignee: Dunlop Ltd
•
Filing: 1972-04-14
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Granted: 1975-10-21
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Expires: 1992-04-14
Abstract
Abstract A flexible reinforcing structure comprising a layer of non-woven matrix supporting material, an adjacent layer of flattened nonfolded non-woven filamentary material, and a flexible binding layer of polymeric material securing together the non-woven matrix supporting material and the non-folded filamentary layer.
Inventors
- 👤 Eric Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:03
CPC Classifications
B; B32; B32B; B32B1/00; B32B1/08; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B32B15/00; B32B15/02; B32B15/18; B32B5/00; B32B5/02; B32B5/022; B32B5/22; B32B5/24; B32B5/26; F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; B32B38/00; B32B2038/0052; B32B2038/0076; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2597/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
A flexible hose comprising: a. an inner lining of polymeric material; b. a flexible binding layer of polymeric material in strip form around the inner lining and having embedded therein an untwisted and non-woven plurality of reinforcement filaments extending longitudinally in the direction of the length of the strip and substantially parallel to the longitudinal axis of the strip, said plurality of filaments comprising a flattened group of filaments; c. a support membrane of non-woven open structured randomly arranged filaments between the inner lining and the flexible binding layer of polymeric material, said membrane having no substantial reinforcing strength but serving only to support the flexible binding layer of polymeric material and to prevent cheese cutting of the inner lining by the strip on change in relative radial dimensions of the inner lining and strip; d. said reinforcement filaments being located substantially directly on the non-woven support membrane.
Claim 2
Dependent Claim
148 words
A flexible hose comprising: a. an inner lining of polymeric material; b. a flexible binding layer of polymeric material in strip form around the inner lining and having embedded therein an untwisted and non-woven plurality of reinforcement filaments extending longitudinally in the direction of the length of the strip and substantially parallel to the longitudinal axis of the strip, said plurality of filaments comprising a flattened group of filaments; c. a support membrane of non-woven open structured randomly arranged filaments between the inner lining and the flexible binding layer of polymeric material, said membrane having no substantial reinforcing strength but serving only to support the flexible binding layer of polymeric material and to prevent cheese cutting of the inner lining by the strip on change in relative radial dimensions of the inner lining and strip; d. said reinforcement filaments being located substantially directly on the non-woven support membrane.
Claim 3
Dependent Claim
19 words
A flexible hose according to claim 1 wherein the untwisted and non-woven reinforcement filaments are formed from synthetic material.
Claim 4
Dependent Claim
19 words
A flexible hose according to claim 2 wherein the reinforcement filaments are formed from a yarn of synthetic material.
Claim 5
Dependent Claim
17 words
A flexible hose according to claim 1 wherein the reinforcement filaments comprise yarns rolled or folded material.
Claim 6
Dependent Claim
16 words
A flexible hose according to claim 1 wherein the reinforcement filaments are formed from slit film.
Claim 7
Dependent Claim
16 words
A flexible hose according to claim 1 wherein the reinforcement filaments are formed from fibrillated film.
Claim 8
Dependent Claim
16 words
A flexible hose according to claim 1 wherein the reinforcement filaments comprise non-folded fine steel wires.
Claim 9
Dependent Claim
20 words
A flexible hose according to claim 1 wherein the reinforcement filaments are in the form of filaments of glass fibers.
Claim 10
Dependent Claim
17 words
A flexible hose according to claim 1 wherein the non-woven support membrane is impregnated with polymeric material.
Claim 11
Dependent Claim
22 words
A flexible hose according to claim 1 wherein the randomly arranged filaments comprise a matrix and are interconnected at their cross-over points.
Claim 12
Dependent Claim
19 words
A flexible hose according to claim 1 wherein the flexible binding layer is spirally wound around the inner lining.
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |