Patent US3861973A successfully refreshed from Google Patents.
US3861973A
Expired / Lapsed
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Polyamide hose and preparation thereof
Assignee: Rilsan Corp
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Filing: 1973-02-27
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Granted: 1975-01-21
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Expires: 1993-02-27
Abstract
Abstract A polyamide hose is provided including a process for the preparation thereof. In the process, a polyamide or copolyamide tubing is contacted with a resorcinol solution and the treated tubing is then reinforced with a synthetic or natural fiber followed by subjecting the reinforced tubing to an elevated temperature of at least about 150*F.
Inventors
- 👤 Robert B Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:06
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B29; B29C; B29C48/00; B29C48/15; B32B27/34; B29C48/03; B29C48/09; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1348; Y10T428/1352; Y10T428/1369; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
68 words
A PROCESS FOR THE PREPARATION OF A REINFORCED HOSE CONSTRUCTION WHICH COMPRISES CONTACTING A POLYAMIDE OR COPOLYAMIDE TUBING WITH AN AQUEOUS RESORCINOL SOLUTION OR AN ALCOHOLIC RESORCINOL SOLUTION, DRYING SAID SOLUTION THEREBY FORMING A CRYSTALLINE MATERIAL ON THE SURFACE OF SAID TUBING, APPLYING TO SAID TUBING A LAYER OF A SYNETHETIC OR NATURAL FIBER FOLLOWED BY HEATING THE REINFORCED TUBING TO A TEMPERATURE OF AT LEAST ABOUT 150*F.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE PREPARATION OF A REINFORCED HOSE CONSTRUCTION WHICH COMPRISES CONTACTING A POLYAMIDE OR COPOLYAMIDE TUBING WITH AN AQUEOUS RESORCINOL SOLUTION OR AN ALCOHOLIC RESORCINOL SOLUTION, DRYING SAID SOLUTION THEREBY FORMING A CRYSTALLINE MATERIAL ON THE SURFACE OF SAID TUBING, APPLYING TO SAID TUBING A LAYER OF A SYNETHETIC OR NATURAL FIBER FOLLOWED BY HEATING THE REINFORCED TUBING TO A TEMPERATURE OF AT LEAST ABOUT 150*F.
Claim 3
Dependent Claim
19 words
A process according to claim 1 wherein the alcohol is an alkanol containing from 1 to 4 carbon atoms.
Claim 4
Dependent Claim
22 words
A process according to claim 1 wherein the resorcinol solution is a 1:1 mixture of resorcinol with metHanol or ethanol, by weight.
Claim 5
Dependent Claim
19 words
A process according to claim 1 wherein the polyamide is a nylon 6, 11, 12, 66 or copolymers thereof.
Claim 6
Dependent Claim
15 words
A process according to claim 4 wherein the polyamide is nylon 11 or nylon 12.
Claim 7
Dependent Claim
33 words
A process according to claim 1 wherein the natural fiber is cotton and the synthetic fiber is a member selected from the group consisting of nylon 6, nylon 66, a polyester and rayon.
Claim 8
Dependent Claim
12 words
A process according to claim 6 wherein the polyester is poly(ethylene teraphthalate).
Claim 9
Dependent Claim
31 words
A process according to claim 1 wherein the polyamide or copolyamide tubing is treated with an alkanol containing from 1 to 4 carbon atoms prior to contacting with the resorcinol solution.
Claim 10
Dependent Claim
55 words
A process according to claim 1 wherein a mixture of the polyamide or copolyamide and resorcinol is extruded to obtain a thin coating on said polyamide or copolyamide tubing followed by applying the reinforcing synthetic or natural fiber to said tubing and then subjecting the resulting assembly to a temperature of at least about 150*F.
Claim 11
Dependent Claim
48 words
A process according to claim 1 wherein the reinforced product thus obtained is contacted with a resorcinol solution followed by applying at least one additional coating of a synthetic or natural fiber reinforcing material followed by subjecting the resulting assembly to a temperature of at least about 150*F.
Claim 12
Dependent Claim
9 words
The product obtained by the process of claim 1.
Claim 13
Dependent Claim
9 words
The product obtained by the process of claim 4.
Claim 14
Dependent Claim
9 words
The product obtained by the process of claim 9.
Claim 15
Dependent Claim
9 words
The product obtained by the process of claim 10.
Claim 16
Dependent Claim
54 words
A process according to claim 1 which comprises contacting the single or multi-layered reinforced tubing with a resorcinol solution, applying a covering selected from the group consisting of a polyamide, copolyamide or a neoprene on to said treated reinforced tubing followed by heating the resulting assembly at a temperature in excess of about 150*F.
Claim 17
Dependent Claim
9 words
The product obtained by the process of claim 15.
Claim 18
Dependent Claim
60 words
A process according to claim 11 wherein the reinforced product thus obtained is contacted with a coating comprising an extruded product of a polyamide or a copolyamide and resorcinol, followed by applying thereon at least one additional layer of a synthetic or natural fiber reinforcing material and then subjecting the resulting assembly to a temperature of at least about 150*F.
Claim 19
Dependent Claim
63 words
A process according to claim 11 which comprises contacting a single or multi-layered reinforced tubing with a coating comprising an extruded product of a polyamide or copolyamide and resorcinol, applying a covering selected from the group consisting of a polyamide, copolyamide or a neoprene on to said reinforced tubing followed by heating the resulting assembly at a temperature in excess of about 150*F.
Claim 20
Dependent Claim
9 words
The product obtained by the process of claim 17.
Claim 21
Dependent Claim
9 words
The product obtained by the process of claim 18.
Claim 22
Dependent Claim
27 words
A process according to claim 1 wherein the layer of the synthetic or natural fiber is applied by wrapping, braiding or helically winding around the treated tubing.
Claim 23
Dependent Claim
27 words
A process according to claim 9 wherein synthetic or natural fiber is applied to said tubing by wrapping, braiding or helically winding said fiber around said tubing.
Claim 24
Dependent Claim
26 words
A process according to claim 10 wherein the coating of said fiber is applied by wrapping, braiding or helically winding said fiber around the treated tubing.
Claim 25
Dependent Claim
23 words
A process according to claim 15 wherein said covering is applied by wrapping, braiding or helically winding said covering around said treated tubing.
Claim 26
Dependent Claim
23 words
A process according to claim 17 wherein said coating is applied by wrapping, braiding or helically winding said coating around said treated tubing.
Claim 27
Dependent Claim
23 words
A process according to claim 18 wherein said covering is applied by wrapping, braiding or helically winding said covering around said treated tubing.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |