REINFORCED FLEXIBLE HOSE

摘要

In a flexible hose reinforced by wire plies, at least two wire plies are provided and the wires of each wire ply are disposed in helical convolutions about the longitudinal axis of the hose. The improvement is in that the wire plies satisfy the following equation formula (I), where subscript b indicates the plies wire arranged with left hand thread, subscript j indicates the wire plies arranged with right hand thread, rb and rj are the mean radii of the wire plies, Nb and Nj are the number of wires in each wire ply, Fb and Fj are the tensile strength of the wires, alpha b and alpha j are the angle of the respective wire plies to the hose axis, l stands for the number of wire plies with left hand thread, m is the number of wire plies with right hand thread.