US 11,011,285 C1 (13,091st)
Method of manufacturing electrical cable, and resulting product, with reduced required installation pulling force
Philip Sasse, Douglasville, GA (US); Terry Chambers, Ranburne, AL (US); Randy D. Kummer, Villa Rica, GA (US); John Armstrong, Villa Rica, GA (US); David Reece, Calhoun, GA (US); and Hai Lam, Douglasville, GA (US)
Filed by Southwire Company LLC, Carrollton, GA (US)
Assigned to SOUTHWIRE COMPANY, LLC, Carrollton, GA (US)
Reexamination Request No. 90/019,678, Sep. 24, 2024.
Reexamination Certificate for Patent 11,011,285, issued May 18, 2021, Appl. No. 16/895,580, Jun. 8, 2020.
Application 90/019,678 is a continuation of application No. 16/015,688, filed on Jun. 22, 2018, granted, now 10,763,010.
Application 16/015,688 is a continuation of application No. 15/590,881, filed on May 9, 2017, granted, now 10,763,009.
Application 15/590,881 is a continuation of application No. 14/858,872, filed on Sep. 18, 2015, granted, now 10,763,008.
Application 14/858,872 is a continuation of application No. 14/144,150, filed on Dec. 30, 2013, granted, now 9,142,336.
Application 14/144,150 is a continuation of application No. 13/774,677, filed on Feb. 22, 2013, granted, now 8,616,918.
Application 13/774,677 is a continuation of application No. 13/274,052, filed on Oct. 14, 2011, granted, now 8,382,518.
Application 13/274,052 is a continuation of application No. 12/787,877, filed on May 26, 2010, granted, now 8,043,119.
Application 12/787,877 is a continuation of application No. 11/675,441, filed on Feb. 15, 2007, granted, now 7,749,024.
Application 11/675,441 is a continuation in part of application No. 11/120,487, filed on May 3, 2005, abandoned.
Application 11/120,487 is a continuation in part of application No. 10/952,294, filed on Sep. 28, 2004, granted, now 7,411,129.
Ex Parte Reexamination Certificate issued on Nov. 21, 2025.
Int. Cl. H01B 7/18 (2006.01); C08G 77/04 (2006.01); C08K 5/20 (2006.01); C08K 5/54 (2006.01); C08L 77/00 (2006.01); H01B 3/22 (2006.01); H01B 3/44 (2006.01); H01B 3/46 (2006.01); H01B 7/00 (2006.01); H01B 7/02 (2006.01); H01B 7/29 (2006.01); H01B 13/14 (2006.01); H01B 13/24 (2006.01); H02G 3/04 (2006.01)
CPC H01B 7/1875 (2013.01) [C08K 5/20 (2013.01); C08K 5/54 (2013.01); C08L 77/00 (2013.01); H01B 3/22 (2013.01); H01B 3/443 (2013.01); H01B 3/445 (2013.01); H01B 3/465 (2013.01); H01B 7/0009 (2013.01); H01B 7/02 (2013.01); H01B 7/0216 (2013.01); H01B 7/292 (2013.01); H01B 13/145 (2013.01); H01B 13/24 (2013.01); H02G 3/0406 (2013.01); C08G 77/04 (2013.01)]
OG exemplary drawing
Attention is directed to the decision of 4:23cv821 Encore Wire Corporation v. Southwire Company, LLC relating to this patent. This reexamination may not have resolved all questions raised by this decision. See 37 CFR 1.552(c) for ex parte reexamination and 37 CFR 1.906(c) for inter partes reexamination.
 
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1-26 is confirmed.
1. A method for manufacturing an electrical cable comprising at least one conductor and a multi-portion sheath surrounding the at least one conductor, wherein the multi-portion sheath define an interior surface and an exterior surface such that the interior surface is adjacent the at least one conductor, wherein the method comprises;
extruding an insulating material comprising polyvinyl chloride (PVC) around the at least one conductor to define an insulating portion of the multi-portion sheath, wherein the insulating portion defines at least a portion of the interior surface of the multi-portion sheath and provides electrical insulation to the conductor;
forming an outer portion to define at least a portion of the exterior surface by;
extruding a nylon material around the insulating material around the at least one conductor to define at least a portion of an outer portion of the multi-layer sheath;
providing a silicone-based pulling lubricant to the outer portion of the multi-portion sheath much that at least a portion of the silicone-based pulling lubricant is provided at the exterior surface in a concentration sufficient to reduce an amount of force required to pull the electrical cable through a building passageway; and wherein
providing the silicone-based pulling lubricant provides the electrical cable with a physical characteristic of requiring at least about 30% less force to pull the electrical cable through the building passageway compared to an amount of force required to pull a non-lubricated electrical cable of the same cable type and having a sheath without the silicone-based pulling lubricant present through the building passageway; and
wherein the building passageway is defined by a PVC conduit setup sized to accommodate the electrical cable and having at least two 90% bends within the PVC conduit setup.