US5016675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant transporting hose
Assignee: Sumitomo Riko Co Ltd
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Filing: 1989-10-16
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Granted: 1991-05-21
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Expires: 2009-10-16
Abstract
Abstract A refrigerant transporting hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, such that the reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body, the inner tube including a resinous layer formed of a composition containing as a major constituent thereof a blend of at least one aliphatic polyamide and at least one aromatic polyamide.
Inventors
- 👤 Ichiro Igarashi
- 👤 Hiroaki Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; B; B60; B60H; B60H1/00; B60H1/00507; B60H1/00557; B60H1/00571; Y; Y10; Y10S; Y10S138/00; Y10S138/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
89 words
A refrigerant transporting hose comprising: an inner tube; an outer tube located radially outwardly of said inner tube; and a reinforcing fiber layer interposed between said inner and outer tubes, such that said reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body; said inner tube including a resinous layer formed of a composition containing as a major constituent thereof a blend of at least one aliphatic polyamide and at least one aromatic polyamide, said resinous layer having a thickness of 0.05 to 1.0 mm.
Claim 2
Dependent Claim
89 words
A refrigerant transporting hose comprising: an inner tube; an outer tube located radially outwardly of said inner tube; and a reinforcing fiber layer interposed between said inner and outer tubes, such that said reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body; said inner tube including a resinous layer formed of a composition containing as a major constituent thereof a blend of at least one aliphatic polyamide and at least one aromatic polyamide, said resinous layer having a thickness of 0.05 to 1.0 mm.
Claim 3
Dependent Claim
28 words
The hose as set forth in claim 1, wherein said inner tube further includes an outer layer of a rubber material located radially outwardly of said resinous layer.
Claim 4
Dependent Claim
28 words
The hose as set forth in claim 2, wherein said inner tube further includes an inner layer of a rubber material located radially inwardly of said resinous layer.
Claim 5
Dependent Claim
38 words
The hose as set forth in claim 1, wherein said composition further contains a rubber constituent, a proportion of said rubber constituent being up to 50 parts by weight in 100 parts by weight of the polyamides blend.
Claim 6
Dependent Claim
64 words
The hose as set forth in claim 1, wherein said at least one aliphatic polyamide is selected from the group consisting of a ring-opening-polymerization product of at least one lactam, a condensation polymerization product of at least one ω-amino acid, and a condensation polymerization product of at least one aliphatic dicarboxylic acid and at least one aliphatic diamine, and any blend of said products.
Claim 7
Dependent Claim
37 words
The hose as set forth in claim 1, wherein said at least one aliphatic polyamide is a ring-opening-polymerization product of at least one lactam selected from the group consisting of γ-caprolactam, enanthlactam, capryllactam, lauryllactam, butyrolactam, and δ-valerolactam.
Claim 8
Dependent Claim
41 words
The hose as set forth in claim 1, wherein said at least one aliphatic polyamide is a condensation polymerization product of at least one ω-amino acid selected from the group consisting of 6-aminocaproic acid, 7-aminoheptanoic acid, 9-aminononanoic acid, and 11-aminoundecanoic acid.
Claim 9
Dependent Claim
78 words
The hose as set forth in claim 1, wherein said at least one aliphatic polyamide is a condensation polymerization product of at least one aliphatic dicarboxylic acid and at least one aliphatic diamine, said at least one aliphatic dicarboxylic acid being selected from the group consisting of malonic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, undecanedicarboxylic acid, dodecanedicarboxylic acid, tridecanedicarboxylic acid, tetradecanedicarboxylic acid, hexadecanedicarboxylic acid, hexadecenedicarboxylic acid, octadecanedicarboxylic acid, octadenedicarboxylic acid, eicosanedicarboxylic acid, and eicosenedicarboxylic acid.
Claim 10
Dependent Claim
79 words
The hose as set forth in claim 1, wherein said at least one aliphatic polyamide is a condensation polymerization product of at least one aliphatic dicarboxylic acid and at least one aliphatic diamine, said at least one aliphatic diamine being selected from the group consisting of ethylene diamine, trimethylene diamine, tetramethylene diamine, pentamethylene diamine, hexamethylene diamine, heptamethylene diamine, octamethylene diamine, nonamethylene diamine decamethylene diamine, undecamethylene diamine, dodecamethylene diamine, tridecamethylene diamine, hexadecamethylene diamine, octadecamethylene diamine 2,2,4-trimethylhexamethylene diamine, and 2,4,4-trimethylhexamethylene diamine.
Claim 11
Dependent Claim
63 words
The hose as set forth in claim 1, wherein said at least one aromatic polyamide is selected from the group consisting of a condensation polymerization product of at least one aromatic dicarboxylic acid and at least one aliphatic diamine, and a condensation polymerization product of at least one aliphatic dicarboxylic acid and at least one aromatic diamine, and any blend of said products.
Claim 12
Dependent Claim
53 words
The hose as set forth in claim 1, wherein said at least one aromatic polyamide is a condensation polymerization product of at least one aromatic dicarboxylic acid and at least one aliphatic amine, said at least one dicarboxylic acid being selected from the group consisting of terephthalic acid, isophthalic acid, and phthalic acid.
Claim 13
Dependent Claim
29 words
The hose as set forth in 1, wherein said at least one aromatic polyamide is a condensation polymerization product of at least one aliphatic carboxylic acid and xylylene diamine.
Claim 14
Dependent Claim
29 words
The hose as set forth in 1, wherein said at least one aromatic polyamide is a condensation polymerization product of at least one aliphatic carboxylic acid and xylylene diamine.
Claim 15
Dependent Claim
35 words
The hose as set forth in claim 1, wherein a ratio by weight of said at least one aliphatic polyamide to said at least one aromatic polyamide falls within a range of 90/10 to 30/70.
Claim 16
Dependent Claim
27 words
The hose as set forth in claim 1, wherein said outer tube is formed of a rubber material, and has a thickness of 1 to 3.5 mm.
References Cited (Backward Citations)
US3062241A
Cited
US3762986A
Cited
US4510974A
Cited
US4410661A
Cited
US4862923A
Cited
US4862923B1
Cited
US4881576A
Cited
US4905736A
Cited
US4842024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |