US 11,942,236 B2
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)
Assigned to Southwire Company, LLC, Carrollton, GA (US)
Filed by Southwire Company, LLC, Carrollton, GA (US)
Filed on Oct. 14, 2022, as Appl. No. 18/046,639.
Application 18/046,639 is a continuation of application No. 17/661,697, filed on May 2, 2022, granted, now 11,527,339.
Application 17/661,697 is a continuation of application No. 17/217,530, filed on Mar. 30, 2021, granted, now 11,355,264, issued on Jun. 7, 2022.
Application 17/217,530 is a continuation of application No. 16/895,580, filed on Jun. 8, 2020, granted, now 11,011,285, issued on May 18, 2021.
Application 16/895,580 is a continuation of application No. 16/015,688, filed on Jun. 22, 2018, granted, now 10,763,010, issued on Sep. 1, 2020.
Application 16/015,688 is a continuation of application No. 15/590,881, filed on May 9, 2017, granted, now 10,763,009, issued on Sep. 1, 2020.
Application 15/590,881 is a continuation of application No. 14/858,872, filed on Sep. 18, 2015, granted, now 10,763,008, issued on Sep. 1, 2020.
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, issued on Dec. 31, 2013.
Application 13/774,677 is a continuation of application No. 13/274,052, filed on Oct. 14, 2011, granted, now 8,382,518, issued on Feb. 26, 2013.
Application 13/274,052 is a continuation of application No. 12/787,877, filed on May 26, 2010, granted, now 8,043,119, issued on Oct. 25, 2011.
Application 12/787,877 is a continuation of application No. 11/675,441, filed on Feb. 15, 2007, granted, now 7,749,024, issued on Jul. 6, 2010.
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, issued on Aug. 12, 2008.
Prior Publication US 2023/0079956 A1, Mar. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01B 13/24 (2006.01); B29C 48/06 (2019.01); B29C 48/09 (2019.01); B29C 48/154 (2019.01); C08K 5/20 (2006.01); H01B 3/22 (2006.01); H01B 3/46 (2006.01); H01B 13/14 (2006.01); B29C 48/95 (2019.01); C08K 5/54 (2006.01); C08L 77/00 (2006.01); H01B 3/44 (2006.01); H01B 7/00 (2006.01); H01B 7/02 (2006.01); H01B 7/18 (2006.01); H01B 7/29 (2006.01); H02G 3/04 (2006.01); H01B 13/22 (2006.01); B29C 48/21 (2019.01); B29C 48/29 (2019.01); B29C 48/34 (2019.01); B29C 48/40 (2019.01); B29C 48/285 (2019.01); B29C 48/88 (2019.01); B29K 23/00 (2006.01); B29K 27/06 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29K 105/00 (2006.01); B29L 31/34 (2006.01); B29K 105/16 (2006.01); C08G 77/04 (2006.01)
CPC H01B 13/24 (2013.01) [B29C 48/06 (2019.02); B29C 48/09 (2019.02); B29C 48/154 (2019.02); B29C 48/95 (2019.02); 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 7/1875 (2013.01); H01B 7/292 (2013.01); H01B 13/145 (2013.01); H01B 13/22 (2013.01); H02G 3/0406 (2013.01); B29C 48/21 (2019.02); B29C 48/288 (2019.02); B29C 48/2888 (2019.02); B29C 48/29 (2019.02); B29C 48/34 (2019.02); B29C 48/40 (2019.02); B29C 48/911 (2019.02); B29C 48/919 (2019.02); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2027/06 (2013.01); B29K 2067/00 (2013.01); B29K 2077/00 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/16 (2013.01); B29L 2031/3462 (2013.01); C08G 77/04 (2013.01); Y10T 29/49117 (2015.01)] 16 Claims
OG exemplary drawing
 
1. A thermoplastic high heat-resistant nylon-coated (THHN) electrical cable having reduced installation pulling force through a polyvinyl chloride (PVC) conduit setup, the THHN electrical cable comprising:
at least one conductor capable of carrying an electrical current through the THHN electrical cable, wherein the conductor is formed at least in part from a metal; and,
a sheath for protecting the conductor, wherein the sheath comprises:
an insulating layer surrounding the conductor and providing electrical insulation to the conductor, wherein the insulating layer is formed at least in part from extruded polyvinyl chloride (PVC); and,
an outer layer surrounding, contacting and forming a coating for the insulating layer, wherein the outer layer further comprises;
an extruded nylon component;
a pulling lubricant provided at an exterior surface of the extruded nylon component that aids in reducing the installation pulling force as the THHN electrical cable is pulled through a PVC conduit setup; and wherein,
the outer layer is both resistant to heat, moisture, oil and gasoline, and provides the THHN electrical cable with the physical characteristic of having an average coefficient of friction against an interior surface of a PVC conduit setup of less than about 0.25.