High pressure hose suitable for conveying gases and gas-containing fluids

Claim 1

A high pressure-resistant multilayer hose structure having means to conduct and vent gases diffused into the body thereof from gas-containing media conveyed therethrough, said hose having a wall with exterior layers, reinforcing ply layers, gas conducting layers, low gas permeable layers, fabric layers, embedding layers and an internal backing layer, wherein (a) said internal backing layer is a flexible metal pipe within and concentric with the inner surface of said hose wall; (b) said flexible, low gas permeable layer is concentric with and is disposed between said internal backing layer and said reinforcing plies layer; (c) said fabric layer is disposed concentrically with and between the outer surface of the flexible metal pipe and said low gas-permeable layer; (d) said reinforcing ply layers are concentric with and are disposed between said low gas-permeable layer and said exterior layers, the reinforcing plies having gaps through which the gases diffused in the hose wall from the medium conveyed through the hose are vented from the interior of the hose wall; (e) embedding layers that are disposed between each layer of reinforcing plies concentric therewith and between the innermost reinforcing ply layer and said low gas-permeable layer and also are located between the outermost reinforcing ply layer and the outermost layers of said hose; (f) said exterior layers of said hose are a cover layer on a fabric carcass which is disposed around the outermost embedding layer.