Valley shaping reinforcement

摘要

A valley shaping means for bidirectionally reinforced convoluted hoses comprising high strength fibers and/or cords which is designed for bonding and/or integration into the valley portion of the bidirectionally reinforced convoluted hose. The high-strength fibers and/or cords can be pre-coated prior to integration with the bidirectionally reinforced convoluted hose, or be coated and bonded after placed in position at the bottom of the valley portion of the bidirectionally reinforced convoluted hose.

主权项

1. An extendable reinforced convoluted pressure hose having an extended length and a retracted length, comprising:
a) a convoluted stretch hose body having a valley portion and a ridge portion; b) a valley reinforcement cord comprising one or more of high strength fibers with a tensile strength greater than 15,000 psi; c) a metal biasing spring having a tendency to return the hose from the extended length to the retracted length; wherein: A) the valley reinforcement cord is wound in a helical path along the valley portion of the convoluted stretch hose body, whereby the valley reinforcement cord stabilizes the valley portion of the convoluted stretch hose body and substantially maintains the radial position of the valley portion at the extended length; B) the biasing spring is located along the ridge portion of the convoluted stretch hose body, whereby the biasing spring supports the ridge portion of the stretch hose body at both the extended length and the retracted length; and C) the stretch hose body is between the valley reinforcement cord and the biasing spring, with the biasing spring disposed on the stretch hose body's interior, and the valley reinforcement cord disposed on the stretch hose body's exterior; D) the extended length is at least twice the retracted length.