COLLAPSE-RESISTANT HOSE CONSTRUCTION

摘要

A flexible hose (10) construction adapted for conveying fluids under relatively high internal pressures and capable of withstanding relatively hi gh external pressures without collapsing. The construction includes a tubular first elastomeric layer (30) having a first inner radial surface (34) and a first outer radial surface (38), and a tubular second elastomeric layer (32) having a second inner radial surface (36) and a second outer radial surface (40). A helical reinforcement element (50) is spiral wound over the first elastomeric layer (30) as interposed between that layer and the second elastomeric layer (32). The element is wound at a predetermined pitch angle to define a series of turns each being spaced-apart from an adjacent turn to define an interstitial area therebetween. The first and second elastomeric members (30, 32) each extends into the interstitial area with the first oute r radial surface (38) of the first elastomeric member (30) being bonded to the second inner radial surface (36) of the second elastomeric member (32) such that the spiral reinforcement member (50) is encapsulated therebetween.