US3905398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite reinforced hose wherein the reinforcing material is braided aromatic polyamide filaments
Assignee: FLUROCARBON COMPANY
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Filing: 1974-04-23
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Granted: 1975-09-16
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Expires: 1994-04-23
Abstract
Abstract A composite reinforced hose adapted to convey fluids under pressure has an extruded synthetic polymeric core tube, at least one layer of fibrous reinforcing material containing filaments having a tenacity of from about 12 to about 25 grams per denier and an elongation at break of from about 2% to about 7% and an extruded synthetic polymeric sheath.
Inventors
- 👤 Hans A Johansen
- 👤 Larry R Phillippi
- 👤 Edward A Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; F16L11/086; F16L11/088
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
62 words
A high burst strength flexible composite reinforced hose for conveying fluids under pressure comprising a synthetic polymeric core tube, a fibrous reinforcing material about the core tube having synthetic filaments having a tenacity of from 12 to about 25 grams per denier with an elongation at break of about 2% to about 7% and a synthetic polymeric sheath covering the reinforcing material.
Claim 2
Dependent Claim
62 words
A high burst strength flexible composite reinforced hose for conveying fluids under pressure comprising a synthetic polymeric core tube, a fibrous reinforcing material about the core tube having synthetic filaments having a tenacity of from 12 to about 25 grams per denier with an elongation at break of about 2% to about 7% and a synthetic polymeric sheath covering the reinforcing material.
Claim 3
Dependent Claim
18 words
The composite hose of claim 1 wherein the core tube and adjacent fibrous layer are adhesively bonded together.
Claim 4
Dependent Claim
12 words
The composite hose of claim 1 wherein the core tube is nylon.
Claim 5
Dependent Claim
24 words
The composite hose of claim 1 wherein a plurality of an aromatic polyamide fibrous reinforcing material are disposed between the core tube and sheath.
Claim 6
Dependent Claim
40 words
The composite hose of claim 1 wherein the layer of reinforcing material adjacent to the core tube is braided aromatic polyamide filaments having a tenacity of 25 grams and another braided layer has filaments of poly(ethylene terrephthalate) ester or nylon.
Claim 7
Dependent Claim
21 words
The composite hose of claim 4 wherein at least one of the layers of fibrous reinforcing material comprises helically wound filaments.
Claim 8
Dependent Claim
39 words
The composite hose of claim 1 having a core tube, a first layer of the said fibrous material adjacent to the core tube, a braided layer of poly(ethylene terrephthalate) ester covering the said first layer and a polyurethane sheath.
Claim 9
Dependent Claim
39 words
The hose of claim 1 wherein one or more layers of the said fibrous material are disposed about the core tube and a reinforcing layer comprising poly(alkylene terephthalate) ester is disposed between the said fibrous material and the sheath.
Claim 10
Dependent Claim
12 words
The composite hose of claim 1 wherein the core tube is polyurethane.
Claim 11
Dependent Claim
72 words
The composite hose of claim 1 wherein a plurality of layers of reinforcing fibers are disposed about the core tube and at least one of the layers is formed of composite fibers having a tenacity of from about 7 to 11 grams per denier and another layer consists of fibers having a tenacity of from 12 to 25 grams per denier and an elongation at break of about 2% to about 7%.
Claim 12
Dependent Claim
53 words
A high burst strength flexible composite reinforced hose for conveying fluids under pressure comprising a synthetic polymeric core tube and a fibrous reinforcing material about the core tube having synthetic filaments having a tenacity of from 12 to 25 grams per denier with an elongation at break of about 2% to about 7%.
Claim 13
Dependent Claim
53 words
A high burst strength flexible composite reinforced hose for conveying fluids under pressure comprising a synthetic polymeric core tube and a fibrous reinforcing material about the core tube having synthetic filaments having a tenacity of from 12 to 25 grams per denier with an elongation at break of about 2% to about 7%.
Claim 14
Dependent Claim
14 words
The hose of claim 11 wherein the reinforcing material is braided aromatic polyamide filaments.
Claim 15
Dependent Claim
31 words
THE HOSE OF CLAIM 13 WHEREIN THE REINFORCING MATERIAL IS BRAIDED AROMATIC POLYAMIDE FILAMENTS HAVING A TENACITY OF ABOUT 20 GRAMS PER DENIER AND AN ELONGATION OF NOT MORE THAN 5%.
Claim 16
Dependent Claim
32 words
The hose of claim 11 wherein the core tube is nylon, the reinforcing material comprises a braided layer of aromatic polyamide fibers, and a braided layer of poly(ethylene terephthalate) ester or nylon.
Claim 17
Dependent Claim
53 words
The hose of claim 11 wherein the reinforcing material comprises a layer of braided aromatic polyamide fibers next to the core tube, a pair of oppositely helically wound layers of aromatic polyamide fibers next to the said braided layer, and a layer of braided poly(ethylene terephthalate) ester fibers around the helically wound layers.
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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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |