Patent ID: 7950420

Claim:
A flexible hose adapted for conveying fluids or gases under pressure, said hose extending in an axial direction along a central longitudinal axis and in a radial direction circumferentially about said longitudinal axis, said hose comprising in order a core tube ( 2 ) having a circumferential inner core tube surface and an opposing circumferential outer core tube surface, said core tube ( 2 ) comprising a first elastomeric layer, a reinforcement layer ( 3 ) surrounding the outer core tube having a circumferential inner core reinforcement surface and an opposing circumferential outer core reinforcement surface, said reinforcement layer ( 3 ) being of knitted, spiral wound, or braided construction, said reinforcement layer ( 3 ) formed from at least one yarn ( 5 ), said yarn ( 5 ) having a linear density from 1000 to 4000 dtex, said yarn ( 5 ) composed of 2 to 5 yarn strands ( 6 ), said yarn strands ( 6 ) being ply-twisted to 1 to 5 twist multiplier, said yarn strands ( 6 ) composed of 1 to 5 spun yarns ( 7 ), said spun yarns ( 7 ) being ply-twisted to 1 to 5 twist multiplier, said spun yarns ( 7 ) comprising a linear density from 100 dtex to 1000 dtex, said spun yarns ( 7 ) comprising filaments having a length from 80 to 150 mm, said spun yarns ( 7 ) comprising a twist of at least 200 turns per meter, and said spun yarns ( 7 ) comprising filaments selected from the group consisting of poly m-phenylene terephthalamide, poly methylene-1,3-benzobisoxazole, polyoxadiazole, polysulfonamide, polyarylene sulfide, polybenzimidazole, polybenzthiazole, polybenzoxaole, or mixtures thereof, and a second elastomeric layer ( 4 ) surrounding said reinforcement layer ( 3 ) on said circumferential outer core reinforcement surface.