Pipes and tubular conduits – Flexible – Braided – interlaced – knitted or woven
Patent
1988-11-23
1990-03-06
Robinson, Ellis P.
Pipes and tubular conduits
Flexible
Braided, interlaced, knitted or woven
138125, 138137, 428212, 428215, 428131, 428492, 428494, 428 361, 428 362, 428 3691, 428 368, F16L 1108
Patent
active
049057359
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.
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patent: 4734305 (1988-03-01), Sugimoto
Robinson Ellis P.
Tokai Rubber Industries Ltd.
Turner Archene A.
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