Patent attributes
A spiral hose includes: a tube with a first wall thickness; a first reinforcement package, arranged around a circumference of the tube, having a first rubber layer embedding at least one set of a first and second layer of wire wound in a helical path around the tube, a winding direction of the first layer being opposite from a winding direction of the second layer, which first reinforcement package has a first package thickness; a second reinforcement package, arranged around a circumference of the first reinforcement package, having a second rubber layer embedding at least a second set of a third and fourth layer of wire wound in a helical path around the first reinforcement package, a winding direction of the third layer being opposite from a winding direction of the fourth layer, which second reinforcement package has a second package thickness; and a cover layer.