US4905735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant transporting hose
Assignee: Sumitomo Riko Co Ltd
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Filing: 1988-11-23
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Granted: 1990-03-06
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Expires: 2008-11-23
Abstract
Abstract A refrigerant transporting hose having an inner tube including an inner and an outer rubber layer and an intermediate resinous layer interposed between the inner and outer rubber layers; an outer tube formed of a rubber material located radially outwardly of the inner tube; and a reinforcing fiber layer interposed between the inner and outer tubes, such that the fiber layer and the inner and outer tubes constitute an integral tubular body, the inner rubber layer of the inner tube having a resistance to water permeation as high as, or higher than, that of the outer rubber layer. The inner rubber layer may be formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber (NBR), chlorosulfonated polyethylene (CSM), chlorinated polyethylene (CPE), epichlorohydrin rubber (CHC, CHR), chloroprene rubber (CR), chlorinated isobutylene-isoprene rubber (Cl-IIR) and ethylene propylene diene rubber (EPDM). The intermediate resinous layer may be formed of a resin selected from the group consisting of polyamide resin, saponified ethylene-vinyl acetate copolymer and a blend of polyamide and rubber material. The outer rubber layer may be formed of a rubber material selected from the group consisting of NBR, CSM, CPE, CHC, CHR, CR, Cl-IIR and EPDM.
Inventors
- 👤 Koji Akiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:46
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/1366; Y10T428/1386; Y10T428/139; Y10T428/1393; Y10T428/24; Y10T428/24273; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31826; Y10T428/31833
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
316 words
A refrigerant transporting hose comprising: an inner tube for transporting a refrigerant, said inner tube including an inner and an outer rubber layer and an intermediate resinous layer interposed between said inner and outer rubber layers, said intermediate resinous layer resisting permeation of refrigerant therethrough, said inner rubber layer having a thickness of 0.05 to 1 mm, said intermediate resin layer having a thickness of 0.05 to 0.5 mm, said outer rubber layer having a thickness of 1 to 3 mm, said intermediate resinous layer being adhesively bonded to said inner and outer rubber layers; an outer tube of a rubber material located radially outwardly of said inner tube, said outer tube having a thickness of 1 to 2.5 mm; and a reinforcing fiber layer interposed between said inner tube and said outer tube, said reinforcing fiber layer being adhesively bonded to the inner and outer tubes to constitute an integral tubular body, said inner rubber layer of the inner tube being formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, chloroprene rubber, chlorinated isobutylene-isoprene rubber and ethylene propylene diene rubber, said intermediate resinous layer of the inner tube being formed of a resinous material selected from the group consisting of polyamide resin, saponified ethylene-vinyl acetate copolymer and a blend of polyamide resin and rubber material, said outer rubber layer of the inner tube being formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, chloroprene rubber, chlorinated isobutylene-isoprene rubber and ethylene propylene diene rubber, said inner rubber layer having a resistance to water permeation as high as, or higher than, a resistance to water permeation of said outer rubber layer, said intermediate resinous layer having a resistance to water permeation lower than the resistance to water permeation of each of said inner and outer rubber layers.
Claim 2
Dependent Claim
316 words
A refrigerant transporting hose comprising: an inner tube for transporting a refrigerant, said inner tube including an inner and an outer rubber layer and an intermediate resinous layer interposed between said inner and outer rubber layers, said intermediate resinous layer resisting permeation of refrigerant therethrough, said inner rubber layer having a thickness of 0.05 to 1 mm, said intermediate resin layer having a thickness of 0.05 to 0.5 mm, said outer rubber layer having a thickness of 1 to 3 mm, said intermediate resinous layer being adhesively bonded to said inner and outer rubber layers; an outer tube of a rubber material located radially outwardly of said inner tube, said outer tube having a thickness of 1 to 2.5 mm; and a reinforcing fiber layer interposed between said inner tube and said outer tube, said reinforcing fiber layer being adhesively bonded to the inner and outer tubes to constitute an integral tubular body, said inner rubber layer of the inner tube being formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, chloroprene rubber, chlorinated isobutylene-isoprene rubber and ethylene propylene diene rubber, said intermediate resinous layer of the inner tube being formed of a resinous material selected from the group consisting of polyamide resin, saponified ethylene-vinyl acetate copolymer and a blend of polyamide resin and rubber material, said outer rubber layer of the inner tube being formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, chloroprene rubber, chlorinated isobutylene-isoprene rubber and ethylene propylene diene rubber, said inner rubber layer having a resistance to water permeation as high as, or higher than, a resistance to water permeation of said outer rubber layer, said intermediate resinous layer having a resistance to water permeation lower than the resistance to water permeation of each of said inner and outer rubber layers.
Claim 3
Dependent Claim
36 words
The hose as set forth in claim 1, wherein said resistance to water permeation of the inner rubber layer of the inner tube is higher than said resistance to water permeation of the outer rubber layer.
Claim 4
Dependent Claim
37 words
The hose as set forth in claim 1, wherein said outer rubber tube has a plurality of spiking holes formed therethrough, said spiking holes communicating said reinforcing fiber layer with ambient atmosphere outside the outer rubber tube.
Claim 5
Dependent Claim
213 words
A refrigerant transporting hose comprising: an inner tube for transporting a refrigerant, said inner tube including an inner and an outer rubber layer and an intermediate resinous layer interposed between said inner and outer rubber layers, said intermediate resinous layer resisting permeation of refrigerant therethrough, said inner rubber layer having a thickness of 0.05 to 1 mm, said intermediate resin layer having a thickness of 0.05 to 0.5 mm, said outer rubber layer having a thickness of 1 to 3 mm, said intermediate resinous layer being adhesively bonded to said inner and outer rubber layers; an outer tube of a rubber material located radially outwardly of said inner tube, said outer tube having a thickness of 1 to 2.5 mm; and a reinforcing fiber layer interposed between said inner tube and said outer tube, said reinforcing fiber layer being adhesively bonded to the inner and outer tubes to constitute an integral tubular body, said inner rubber layer of the inner tube having a resistance to water permeation higher than a resistance to water permeation of said outer rubber layer of the inner tube, said intermediate resinous layer of the inner tube having a resistance to water permeation lower than the resistance to water permeation of each of said inner and outer rubber layers.
Claim 6
Dependent Claim
213 words
A refrigerant transporting hose comprising: an inner tube for transporting a refrigerant, said inner tube including an inner and an outer rubber layer and an intermediate resinous layer interposed between said inner and outer rubber layers, said intermediate resinous layer resisting permeation of refrigerant therethrough, said inner rubber layer having a thickness of 0.05 to 1 mm, said intermediate resin layer having a thickness of 0.05 to 0.5 mm, said outer rubber layer having a thickness of 1 to 3 mm, said intermediate resinous layer being adhesively bonded to said inner and outer rubber layers; an outer tube of a rubber material located radially outwardly of said inner tube, said outer tube having a thickness of 1 to 2.5 mm; and a reinforcing fiber layer interposed between said inner tube and said outer tube, said reinforcing fiber layer being adhesively bonded to the inner and outer tubes to constitute an integral tubular body, said inner rubber layer of the inner tube having a resistance to water permeation higher than a resistance to water permeation of said outer rubber layer of the inner tube, said intermediate resinous layer of the inner tube having a resistance to water permeation lower than the resistance to water permeation of each of said inner and outer rubber layers.
Claim 7
Dependent Claim
47 words
The hose as set forth in claim 4, wherein said inner rubber layer of the inner tube is formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, chloroprene rubber, chlorinated isobutylene-isoprene rubber and ethylene propylene diene rubber.
Claim 8
Dependent Claim
43 words
The hose as set forth in claim 4, wherein said intermediate resinous layer of the inner tube is formed of a resinous material selected from the group consisting of polyamide resin, saponified ethylene-vinyl acetate copolymer and a blend of polyamide and rubber material.
Claim 9
Dependent Claim
47 words
The hose as set forth in claim 4, wherein said outer rubber layer of the inner tube is formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, chloroprene rubber, chlorinated isobutylene-isoprene rubber and ethylene propylene diene rubber.
References Cited (Backward Citations)
US2899982A
Cited
US2564602A
Cited
US2800145A
Cited
US3528260A
Cited
US4330017A
Cited
US4209042A
Cited
JPS572099A
Cited
JPS6091082A
Cited
JPS616482A
Cited
US4734305A
Cited
US4633912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |