Patent ID: 9377137
Filing Date: 2016-06-28
CPC Classification: F16L

Claim Text:
1. A bonded high-pressure rubber hose comprising a flexible internal stripwound tube, a liquid and gas tight primary liner made from rubber or plastic, reinforcing plies embedded in rubber, one or more of the reinforcing plies comprising lower reinforcing plies which are disposed at an angle of lay smaller than an angle of equilibrium, the reinforcing plies further comprising upper reinforcing plies disposed at a higher angle of lay than the angle of equilibrium, a liquid and gas tight secondary liner disposed above the lower reinforcing plies, and an adhesively bonded coupling, wherein if the primary liner should become damaged the secondary liner and the upper reinforcing plies can still withstand at least a design operating internal pressure of the hose, wherein the one or more lower reinforcing plies are embedded in rubber inside of a body of the coupling and the secondary liner is adhesively bonded to the body of the coupling by a sealing material that provides metal to rubber adhesion, and wherein the following inequality holds for the angle of lay of a lowest one of the one or more lower reinforcing plies of the hose: where α D D