Hoses stable in length under the effect of an internal pressure

Details Hoses stable in length under the effect of an internal pressure Hoses stable in length under the effect of an internal pressure

1988-07-28

1991-06-18

Recla, Henry J.

Pipes and tubular conduits

Flexible

Spirally wound material

138137, 138129, F16L 1116

Patent

active

050242520

ABSTRACT:
A hose having stable length under pressure comprises an internal leak tightness sheath, and armoring consisting of at least two pairs of layers of helically wound wires, the two layers of the same pair being made of identical wires laid at the same sheathing angle but in the opposite direction, and an external protective sheath. All the wires are laid at one of two sheathing angles, one less than 55.degree. the other greater than 55.degree.; the wires of at least one pair of layers exhibit one sheathing angle between 40.degree. and 53.degree., and the wires of at least one other pair of layers exhibit a second sheathing angle between 57.degree. and 70.degree..

REFERENCES:
patent: 3604461 (1971-09-01), Matthews
patent: 4343333 (1982-08-01), Keister
patent: 4402346 (1983-09-01), Cheetham et al.
patent: 4403631 (1983-09-01), Abdullaev et al.
patent: 4431034 (1984-02-01), Abdullaev et al.
patent: 4522235 (1985-06-01), Kluss et al.
patent: 4649963 (1987-03-01), Raghaven et al.

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