Method of making high pressure reinforced hydraulic hose

Details Method of making high pressure reinforced hydraulic hose Method of making high pressure reinforced hydraulic hose

1978-03-23

1979-11-27

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

138129, 138144, 156149, 156171, 156195, B65H 8100

Patent

active

041759923

ABSTRACT:
Hydraulic circuits having flexible hydraulic hoses forming part of the circuits are currently being operated at pressures in excess of 3,000 psi, and such circuits are often limited in their operating pressure by the burst strength of the hydraulic hose. By constructing a hollow core structure that forms the conduit and which serves as the foundation upon which the reinforcing is applied, with a two-layer tape composed of a layer of fabric and a layer of elastomer, which tape is then wound on a mandrel in a helically overlapping relationship with the fabric on the outside, an improved hose can be obtained after the reinforcing is applied. An increase in burst strength can be obtained in such a hose where wire cable is employed as the reinforcing in place of monofilament wire reinforcing, when the cable is formed (twisted) as it is applied, to achieve a more uniform tension on each of the strands forming the cable encircling the core structure.

REFERENCES:
patent: 2277397 (1942-03-01), Graham
patent: 3112234 (1963-11-01), Krupp
patent: 3228616 (1966-01-01), Grosh
patent: 3357456 (1967-12-01), Grawey et al.
patent: 3866633 (1975-02-01), Taylor

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