Pre-lubricated cable and method of manufacture
AssigneePirelli Cable Corporation
InventorsKyle Cope, Tareq Haque
Life of this patent
Estimating the term…
Abstract
An energy transmission cable is provided with a lubricating coating layer upon its outer covering, such as an outer jacket or outer insulation of the cable, is permanent on the outer covering, provides for a coefficient of friction between the cable and a cable engaging surface that is less than the coefficient of friction between the cable without the lubricating coating layer and the engaging surface and which has an outer surface which is dry, non-tacky and water insoluble. The features of the lubricating coating layer remain substantially unaffected upon exposure to the environmental and physical conditions associated with storage and installation of an energy cable.
Claims20
An energy transmission cable having an outer covering encircling a core containing an energy transmission medium, wherein the outer covering includes an outer surface, wherein the improvement comprises:
- a dry, non-tacky, lubricating coating layer adhering to the outer surface of the covering and having an outer surface which forms the outer surface of the cable,
- wherein the layer is a discrete and independent layer of a lubricating release agent which can be applied on the covering in a water carrier and which adheres to the outer surface of the covering and
- wherein the outer surface of the covering without the layer has a coefficient of friction with respect to an engaging surface and wherein the outer surface of the layer has a coefficient of friction with respect to the engaging surface which is at least about 20% less than the coefficient of friction of the outer surface of the covering without the layer with respect to the engaging surface.
An energy transmission cable having an outer covering encircling a core containing an energy transmission medium, wherein the outer covering includes an outer surface, wherein the improvement comprises:
- a dry, non-tacky, lubricating coating layer adhering to the outer surface of the covering and having an outer surface which forms the outer surface of the cable,
- wherein the layer is a discrete and independent layer of a lubricating release agent which can be applied on the covering in a water carrier and which adheres to the outer surface of the covering and
- wherein the outer surface of the covering without the layer has a coefficient of friction with respect to a metal engaging surface and wherein the outer surface of the layer has a coefficient of friction with respect to the metal engaging surface which is at least about 20% less than the coefficient of friction of the outer surface of the covering without the layer with respect to the metal engaging surface.
An energy transmission cable having an outer covering encircling a core containing an energy transmission medium, wherein the outer covering includes an outer surface, wherein the improvement comprises:
- a dry, non-tacky, lubricating coating layer adhering to the outer surface of the covering and having an outer surface which forms the outer surface of the cable,
- wherein the layer is a discrete and independent layer of a lubricating release agent which can be applied on the covering in a water carrier and which adheres to the outer surface of the covering and
- wherein the outer surface of the covering without the layer has a coefficient of friction with respect to an engaging surface of a plastic material and wherein the outer surface of the layer has a coefficient of friction with respect to the engaging surface which is at least about 20% less than the coefficient of friction of the outer surface of the covering without the layer with respect to the engaging surface.
Dependencies are inferred from the claim text.