The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 1990
Filed:
Nov. 23, 1988
Koji Akiyoshi, Inuyama, JP;
Tokai Rubber Industries, Ltd., Aichi, JP;
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.