Flexible hose with external sheathed electrical conductor
First Claim
1. A helically fabricated electrically conductive flexible hose comprising(a) at least one plastic strip wrapped helically with successive convolutions overlapping and forming a flexible hose wall of at least one ply, and(b) at least one self-supporting electrically conductive helical reinforcing element forming the outermost element of the hose concentric with and engaging the outside of said wall and comprisingi. at least two spaced inner metal wires, andii. an outer plastic sheath of non-circular cross-section enclosing said wires and having a substantially flat side facing inwardly and engaging the outer ply of said wall,iii. the plastic sheath being bonded to the plastic wall.
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Accused Products
Abstract
A helically fabricated electrically conductive flexible hose having a self-supporting electrically conductive helical reinforcing element of non-circular cross-section with a flat side facing inwardly and defining the outermost element of the hose bonded to a flexible plastic hose wall.
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Citations
5 Claims
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1. A helically fabricated electrically conductive flexible hose comprising
(a) at least one plastic strip wrapped helically with successive convolutions overlapping and forming a flexible hose wall of at least one ply, and (b) at least one self-supporting electrically conductive helical reinforcing element forming the outermost element of the hose concentric with and engaging the outside of said wall and comprising i. at least two spaced inner metal wires, and ii. an outer plastic sheath of non-circular cross-section enclosing said wires and having a substantially flat side facing inwardly and engaging the outer ply of said wall, iii. the plastic sheath being bonded to the plastic wall.
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4. A helically fabricated electrically conductive flexible hose comprising
(a) a first plastic strip wrapped helically with successive convolutions overlapping and forming an inner ply of a flexible hose wall, (b) a plurality of longitudinal reinforcing cords circumferentially spaced about the inner ply of the hose wall, (c) a plurality of helical reinforcing cords wrapped about the inner ply of the hose wall over the longitudinal reinforcing cords, (d) a second plastic strip wrapped helically with successive convolutions overlapping and forming an outer ply of the flexible hose wall, and (e) a single self-supporting electrically conductive helical reinforcing element forming the outermost element of the hose concentric with and engaging the outer ply of the hose wall and comprising i. a pair of spaced inner metal wires, and ii. an outer plastic sheath of non-circular cross-section enclosing said wires and having a substantially flat side facing inwardly and engaging the outer ply of said wall, iii. the plastic sheath being bonded to the plastic wall.
Specification