Flexible multiconductor electric cable
AssigneeSiemens Aktiengesellschaft
InventorsMax Barnicol-Ottler, Martin Loczenski, Norbert Mieschke, Gerhard Ott, Gerhard Przybylski, Erich Puff, Dietmar Weber
Life of this patent
Estimating the term…
Abstract
To improve the mechanical strength of a rubber hose cable, support elements are arranged between the conductors and the support elements are connected to a high tensile strength wrapping applied with a lay opposite the twisted conductors with adhesion or by cementing.
Claims20
In a multiconductor flexible electric cable, including three or four insulated conductors twisted to form a cable core surrounded by a core wrapping applied with a lay opposite that of the twisted insulated conductors, and a jacket of rubber-elastic material over the core wrapping, the improvement comprising:
- (a) support elements consisting of corner filling of a thermo-elastic or rubber-elastic material with a Shore-A hardness of more than 70 disposed in the outer region of the cable core, symmetrically distributed over its circumference, resting laterally against the mutually adjacent insulated conductors,;
- (b) the core wrapping being built-up of high tension strength elements of textile, plastic or glass fibres or of steel strands;
- and
- (c) a thin plastic layer applied to the cable core for attaching the core wrapping to the support elements by adhesion or cementing.
In a multiconductor flexible electric cable, including insulated conductors twisted in at least an inner and an outer layer, to form a cable core surrounded by a core wrapping applied with a layer opposite that of the twisted insulated conductors, and a jacket of rubber-elastic material over the core wrapping, the improvement comprising:
- (a) support elements consisting of a thermo-elastic or rubber-elastic material with a Shore-A hardness of more than 70 in the form of running conductors disposed in the outer layer of conductors, symmetrically distributed over its circumference, resting laterally against the mutually adjacent insulated conductors;
- (b) the core wrapping being built-up of high tension strength elements of textile, plastic or glass fibres or of steel strands;
- and
- (c) a thin plastic layer applied to the cable core for attaching the core wrapping to support elements by adhesion or cementing.
In a multiconductor flexible electric cable, including three or four insulated conductors twisted to form a cable core surrounded by a core wrapping applied with a layer opposite that of the twisted insulated conductors, and a jacket of rubber-elastic material over the core wrapping, the improvement comprising:
- (a) support elements forming a star-shaped strand of rubber-elastic material, the arms of which form chambers for receiving the insulated conductors extending to the outer region of the cable core, symmetrically distributed over its circumference, resting laterally against the mutually adjacent insulated conductors;
- (b) the core wrapping being built-up of high tension strength elements of textile, plastic or glass fibres or of steel strands;
- and
- (c) a thin plastic layer applied to the cable core for attaching the core wrapping to the support elements by adhesion or cementing.
Dependencies are inferred from the claim text.