Patent US4867962A successfully refreshed from Google Patents.
Patent US4384595A successfully refreshed from Google Patents.
US4384595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose construction
Assignee: Parker Hannifin Customer Support Inc
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Filing: 1981-09-14
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Granted: 1983-05-24
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Expires: 2001-09-14
Abstract
Abstract A high strength flexible hose for conveying fluids under pressure wherein the hose includes a synthetic thermoplastic polymeric core tube, one or more inner reinforcing layers of a high strength aramid yarn having a section modulus of over 400 grams per denier and a tenacity of more than 15 grams per denier at room temperature, and one or more outer reinforcing layers of metal wire.
Inventors
- 👤 Donald E. Washkewicz
- 👤 John R. Greco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:36
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; F16L11/086; D; D04; D04C; D04C1/00; D04C1/02; F16L11/081; F16L11/082; F16L11/083; F16L11/087; D10; D10B; D10B2505/00; D10B2505/02; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/1362; Y10T428/1366
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
109 words
A high burst strength flexible composite hose comprising a flexible core tube, one or more inner layers of fibrous reinforcing material disposed about said core tube having a contribution to the total strength of the composite of between 3% and 40%, said one or more inner layers of fibrous reinforcing material being applied with spaces between adjacent strands of said fibrous material, said fibrous reinforcing material having a modulus of elasticity of about 400 grams per denier and a tenacity of at least 15 grams per denier at room temperature, and one or more outer layers of metal wire reinforcing material disposed about said one or more inner layers.
Claim 2
Dependent Claim
109 words
A high burst strength flexible composite hose comprising a flexible core tube, one or more inner layers of fibrous reinforcing material disposed about said core tube having a contribution to the total strength of the composite of between 3% and 40%, said one or more inner layers of fibrous reinforcing material being applied with spaces between adjacent strands of said fibrous material, said fibrous reinforcing material having a modulus of elasticity of about 400 grams per denier and a tenacity of at least 15 grams per denier at room temperature, and one or more outer layers of metal wire reinforcing material disposed about said one or more inner layers.
Claim 3
Dependent Claim
28 words
A hose as defined in claim 1 further including a flexible sheath of synthetic thermoplastic material covering said one or more outer layers of metal wire reinforcing material.
Claim 4
Dependent Claim
28 words
A hose as defined in claim 1 further including a flexible sheath of synthetic elastomeric material covering said one or more outer layers of metal wire reinforcing material.
Claim 5
Dependent Claim
29 words
A hose as defined in claim 1 wherein said fibrous reinforcing material is Kevlar, an aramid filament having a tenacity greater than 19 grams per denier at room temperature.
Claim 6
Dependent Claim
26 words
A hose as defined in claim 1 wherein said one or more inner layers of fibrous reinforcing material is applied to give less than 100% coverage.
Claim 7
Dependent Claim
16 words
A hose as defined in claim 1 where said core tube is a heat curable elastomer.
Claim 8
Dependent Claim
15 words
A hose as defined in claim 1 wherein said core tube is a thermoplastic material.
Claim 9
Dependent Claim
20 words
A hose as defined in claim 5 wherein said one or more inner layers of fibrous reinforcing material are braided.
Claim 10
Dependent Claim
21 words
A hose as defined in claim 5 wherein said one or more inner layers of fibrous reinforcing material is spirally wound.
Claim 11
Dependent Claim
110 words
A high burst strength flexible composite hose comprising a flexible core tube of synthetic material, one or more inner layers of fibrous reinforcing material applied around said core tube to give coverage of less than 100%, said fibrous reinforcing material having a modulus of elasticity of at least 400 grams per denier and a tenacity of at least 15 grams per denier at room temperature, said one or more inner layers of fibrous reinforcing material being applied at an angle between 48° and 56°, and one or more outer layers of metal wire reinforcing material applied at an angle between 50° and 58° about said one or more inner layers.
Claim 12
Dependent Claim
110 words
A high burst strength flexible composite hose comprising a flexible core tube of synthetic material, one or more inner layers of fibrous reinforcing material applied around said core tube to give coverage of less than 100%, said fibrous reinforcing material having a modulus of elasticity of at least 400 grams per denier and a tenacity of at least 15 grams per denier at room temperature, said one or more inner layers of fibrous reinforcing material being applied at an angle between 48° and 56°, and one or more outer layers of metal wire reinforcing material applied at an angle between 50° and 58° about said one or more inner layers.
Claim 13
Dependent Claim
27 words
A hose of claim 10 wherein the fibrous reinforcement is Kevlar, an aramid having a tenacity of generally at least 19 grams per denier at room temperature.
Claim 14
Dependent Claim
22 words
A hose of claim 10 wherein the fibrous reinforcement material contributes between 3% and 40% of the total strength of the composite.
Claim 15
Dependent Claim
26 words
A hose of claim 10 further including a flexible sheath of synthetic thermoplastic material covering said one or more outer layers of metal wire reinforcing material.
Claim 16
Dependent Claim
26 words
A hose of claim 10 further including a flexible sheath of synthetic elastomeric material covering said one or more outer layers of metal wire reinforcing material.
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) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |