US5660210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered rubber hose with reinforcing
Assignee: Toyoda Gosei Co Ltd
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Filing: 1993-03-03
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Granted: 1997-08-26
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Expires: 2013-03-03
Abstract
Abstract A reinforced hose includes an inner tubular rubber layer, a cover layer made of rubber, and at least two reinforcing thread layers, including an upper thread layer and a lower thread layer, disposed between the inner tubular rubber layer and the cover layer. At least the lower thread layer includes a polyester thread having the following physical properties: a tensile strength of 8 grams or more per a unit denier, an elongation of 10±1.5%, and a loaded elongation of 2.7±1.0% per a unit denier under 3-gram load. With this construction, the reinforced hose satisfies the fatigue resistance and volume expansion requirements simultaneously.
Inventors
- 👤 Fumio Ikeda
- 👤 Satoshi Mizutani
- 👤 Katsushi Kitaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:27
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; F16L11/086; F16L11/087
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
103 words
A layered rubber hose with reinforcing, comprising: an inner tube made of rubber; an inner reinforcing thread layer comprised of polyester thread having the following physical properties; a tensile strength per unit denier of 8 grams or more, an elongation of 10±1.5%, and a loaded elongation per unit denier of 2.7±1.0% under a 3-gram load; and disposed over said inner tube; an intermediate rubber layer disposed over said inner reinforcing thread layer; an outer reinforcing thread layer, formed by braiding polyvinyl alcohol thread, disposed over said intermediate rubber layer; and a cover layer made of rubber formed over said outer reinforcing thread layer.
Claim 2
Dependent Claim
103 words
A layered rubber hose with reinforcing, comprising: an inner tube made of rubber; an inner reinforcing thread layer comprised of polyester thread having the following physical properties; a tensile strength per unit denier of 8 grams or more, an elongation of 10±1.5%, and a loaded elongation per unit denier of 2.7±1.0% under a 3-gram load; and disposed over said inner tube; an intermediate rubber layer disposed over said inner reinforcing thread layer; an outer reinforcing thread layer, formed by braiding polyvinyl alcohol thread, disposed over said intermediate rubber layer; and a cover layer made of rubber formed over said outer reinforcing thread layer.
Claim 3
Dependent Claim
31 words
The layered rubber hose according to claim 1, wherein said outer reinforcing thread layer is further formed by braiding under one of said braiding conditions: 2S-24C, 3S-20C and 3S-24C braiding conditions.
Claim 4
Dependent Claim
34 words
The layered rubber hose according to claim 1, wherein said inner reinforcing thread layer is formed by braiding said polyester thread under one of the following braiding conditions: 2S-24C, 3S-20C and 3S-24C braiding conditions.
Claim 5
Dependent Claim
35 words
The layered rubber hose according to claim 3, wherein said outer reinforcing thread layer is formed by braiding said polyvinyl alcohol thread under one of the following braiding conditions: 2S-24C, 3S-20C and 3S-24C braiding conditions.
Claim 6
Dependent Claim
20 words
The layered rubber hose according to claim 1, wherein said inner tube includes SBR, and said cover layer includes CR.
Claim 7
Dependent Claim
20 words
The layered rubber hose according to claim 1, wherein said inner tube includes SBR, and said cover layer includes EPDM.
Claim 8
Dependent Claim
18 words
The layered rubber hose according to claim 1, wherein said inner tube and said cover layer include EPDM.
Claim 9
Dependent Claim
15 words
The layered rubber hose according to claim 1, wherein said intermediate rubber layer includes NR.
Claim 10
Dependent Claim
24 words
The layered rubber hose according to claim 1, wherein said inner tube is made of SBR, and said cover layer is made of CR.
Claim 11
Dependent Claim
24 words
The layered rubber hose according to claim 1, wherein said inner tube is made of SBR, and said cover layer is made of EPDM.
Claim 12
Dependent Claim
20 words
The layered rubber hose according to claim 1, wherein said inner tube and said cover layer are made of EPDM.
Claim 13
Dependent Claim
34 words
The layered rubber hose according to claim 1, wherein said inner reinforcing thread layer is formed by braiding said polyester thread under one of the following braiding conditions: 2S-24C, 3S-20C and 3S-24C braiding conditions.
Claim 14
Dependent Claim
34 words
The layered rubber hose according to claim 1, wherein said loaded elongation per unit denier under 3-gram load of said inner reinforcing thread layer is smaller than that of said outer reinforcing thread layer.
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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) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |