Loading patent…
AssigneeSouthwire Company
InventorsRandy D. Kummer, David Reece, Mark D. Dixon, John R. Carlson, Hai Lam, Philip Sasse
Estimating the term…
Disclosed is a method of manufacturing a finished cable by a process directed to reduce the amount of force required to install the cable. The process involves the extrusion of the cable's outer sheath and the incorporation of a pulling lubricant in connection with, and prior to the completion of, the extrusion to reduce the sheath's surface coefficient of friction as well as reduce the required force to pull the cable for installation. The conductor core is coated with an extruded plastic material with which an appropriate (in amount and type) pulling lubricant is initially combined with the plastic material prior to the formation of the sheath and in which the sheathed conductor core is thereafter cooled, the lubricant either migrating to and/or permeating the sheath to be available at the surface of the sheath at the time of the cable's installation. The preselected lubricant is disclosed as either combined with the plastic material during initial pelletization, or mixed with the plastic pellets prior to introduction of the mixture into the extruding head, or introduced into the extruding head at a separate location downstream from where the plastic material is introduced into the extruding head.
In a method of manufacturing a finished electrical cable having a conductor core and a jacket formed primarily of a first material, the jacket surrounding at least said conductor core and defining the outermost exterior surface of the finished cable, the improvement comprising combining a preselected lubricant with said first material prior to the formation of said jacket to provide a reduced coefficient of friction of said outermost exterior surface and also reduce the amount of force required to pull the cable during its installation, in which said lubricant is of the type which migrates through said jacket to be available at said outermost exterior surface of said finished cable during the cable's installation.
In a method of manufacturing a finished electrical cable having a conductor core and a jacket formed primarily of a first material, the jacket surrounding at least said conductor core and defining the outermost exterior surface of the finished cable, the improvement comprising combining a preselected lubricant with said first material prior to the formation of said jacket to provide a reduced coefficient of friction of said outermost exterior surface and also reduce the amount of force required to pull the cable during its installation, in which said lubricant is of the type which permeates said jacket to be continuously available at the said outermost exterior surface during its installation.
In a method of manufacturing a finished electrical cable of the type having a conductor core, and an outermost extruded jacket defining the exterior surface of the finished cable, the improvement comprising introducing a preselected lubricant of the type that will migrate through said outermost extruded jacket to be available at said exterior surface during the finished cable's installation to provide a reduced coefficient of friction of said exterior surface of said outermost jacket and also reduce the amount of force required to pull the finished cable during its installation.
In a method of manufacturing a finished electrical cable of the type having a conductor core, and an outermost extruded jacket defining the exterior surface of the finished cable, the improvement comprising introducing a preselected lubricant of the type that permeates said outermost extruded jacket to be available at said exterior surface during the finished cable's installation, to provide a reduced coefficient of friction of said exterior surface of said outermost extruded jacket and also reduce the amount of force required to pull the finished cable during its installation.
A method of providing a finished electrical cable of the type having a cable core and an external jacket with an exterior surface defining the outermost exterior surface of the cable, for installation through building passageways, said method comprising:
A method of manufacturing a finished electrical cable of the type having at least one electrical conductor, comprising:
In a method of manufacturing a finished electrical cable of the type having a conductor core and an outermost extruded jacket of a preselected material defining the exterior surface of the finished cable, the improvement comprising combining with the preselected material, prior to completing the extrusion of said jacket, a preselected lubricant of the type that will migrate through said jacket to be available at said exterior surface and reduce the amount of force required to install the cable at the time of the cable's installation.
In a method of manufacturing a finished electrical cable of the type having a conductor core and an outermost extruded jacket of a preselected material defining the exterior surface of the finished cable, the improvement comprising combining with the preselected material, prior to completing the extrusion of said jacket, a preselected lubricant of the type that will permeate said jacket to be available at said exterior surface and reduce the amount of force required to install the cable at the time of the cable's installation.
A method of manufacturing a finished electrical cable of the type having at least one electrical conductor, comprising:
Dependencies are inferred from the claim text.