Electrical cable having a surface with reduced coefficient of friction
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01B-007/00
출원번호
US-0952294
(2004-09-28)
등록번호
US-7411129
(2008-08-12)
발명자
/ 주소
Kummer,Randy D.
Reece,David
Dixon,Mark D.
Carlson,John R.
Lam,Hai
Sasse,Philip
출원인 / 주소
Southwire Company
대리인 / 주소
Glaser,Kenneth R.
인용정보
피인용 횟수 :
25인용 특허 :
35
초록▼
The present invention includes a cable having reduced surface friction and the method of manufacture thereof having steps in which a conductor wire is coated with a mixture of a plastic material and lubricating material and in which the coated conductor wire is cooled. The cable includes at least on
The present invention includes a cable having reduced surface friction and the method of manufacture thereof having steps in which a conductor wire is coated with a mixture of a plastic material and lubricating material and in which the coated conductor wire is cooled. The cable includes at least one conductor core and at least one coating of plastic material and incorporates a lubricating material in and/or on the plastic material. The equipment for the manufacturing of electrical cable includes a reel for supplying a conductor wire to an extruding head, which is connected to tanks containing plastic material and lubricating material for coating the conducting wire, and a reel for taking up the cable.
대표청구항▼
What is claimed is: 1. In a method of manufacturing a finished electrical cable having a conductor core and a sheath of material surrounding at least said conductor core and defining the outermost exterior surface of the finished cable, the improvement comprising: (a) introducing sufficient lubrica
What is claimed is: 1. In a method of manufacturing a finished electrical cable having a conductor core and a sheath of material surrounding at least said conductor core and defining the outermost exterior surface of the finished cable, the improvement comprising: (a) introducing sufficient lubricant into said material prior to the formation of said sheath to provide a reduced coefficient of friction of said outermost exterior surface and reduce the amount of force required to pull the cable during its installation, in which said lubricant is of the type which either migrates through, or permeates, said material to be available at said outermost exterior surface; and (b) thereafter extruding said so-lubricated material to surround at least said conductor core. 2. The improvement as defined in claim 1, in which the introduction of said lubricant into said material is effected by combining said material in non-pellet form with said lubricant, thereby to form sufficiently lubricated material pellets, and the so-lubricated material pellets are thereafter used for said extruding. 3. The improvement as defined by claim 1, in which the introduction of said lubricant into said material is effected by injecting the said material in non-lubricated form into an extruding head at a first location and injecting the said lubricant into said extruding head at a second location downstream from said first location. 4. A method of manufacturing a finished electrical cable having a conductor core and an outermost sheath of thermoplastic material surrounding at least the conductor core and defining the exterior surface of the finished cable, said method comprising: (a) providing a supply of thermoplastic material; (b) introducing sufficient lubricant into said thermoplastic material to provide a reduced coefficient of friction of said exterior surface of said outermost sheath at the time of the installation of the finished cable through passageways of building structures, said lubricant being of a type which either migrates through, or permeates, the thermoplastic material, to be available at said exterior surface of the cable at the time of its installation; (c) extruding the so-lubricated thermoplastic material to surround at least the conductor core; and (d) thereafter cooling the extruded material to form the said outermost sheath, the lubricant remaining within said sheath after said cooling. 5. The method as recited in claim 4, in which the lubricant only migrates through the thermoplastic material to reach the said exterior surface of the cable at the time of its installation. 6. A method of manufacturing a finished electrical cable of the type having a conductor core, and at least two sheaths surrounding at least the conductor core, an inner sheath of a first material, and an outermost sheath of a second material different than said first material, the outermost sheath defining the exterior surface of the finished cable, said method comprising: (a) forming said inner sheath of said first material; (b) introducing a lubricant into the said second material sufficient to provide a reduced coefficient of friction of the exterior surface of said outermost sheath and reduce the amount of force required to pull the cable during its installation, said lubricant being of a type which either migrates through, or permeates, said second material, to be available at said exterior surface of the cable at the time of its installation; (c) extruding said so-lubricated material to surround at least said conductor core; and (d) thereafter cooling said extruded material to form said outermost sheath. 7. The method of manufacture as defined by claim 6 in which the lubricant is chosen only to migrate through said second material to reach the said exterior surface at the time of the installation of the finished cable. 8. A method of manufacturing a finished electrical cable of the type having a conductor core, and at least two sheaths surrounding at least the conductor core, an inner sheath of a first material, and an outermost sheath of a second material different than said first material, the outermost sheath defining the exterior surface of the finished cable, said method comprising: (a) forming said inner sheath of said first material; (b) introducing a lubricant into the said second material sufficient to provide a reduced coefficient of friction of the exterior surface of said outermost sheath at the time of installation of the finished cable, thereby to reduce the amount of force required to pull the cable and increase the resistance to cable burn-through during its installation, said lubricant being of a type which either migrates through, or permeates, said second material, to be available at said exterior surface of the cable at the time of its installation; and (c) extruding said so-lubricated material to surround at least said conductor core, therein providing said finished cable with a lubricated outer surface at the time of installation without the external application of a lubricant to said outer surface.
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이 특허에 인용된 특허 (35)
Jonnes Nelson (Stillwater MN) Weitz Gene C. (Vadnais Heights MN), Apparatus and method for lubricating cables.
Sanchez Alfonso Perez,MXX ; De La Huerta Ivan Marino,MXX ; Tabla Octavio Parra,MXX ; Delgado Arturo Hjort,MXX, Co-extruded electric conductor cable in three insulating layers of low humidity absorption electric method low smoke an.
Foster George Norris ; Chen Tong ; Vogel Robert Harold ; Wasserman Scott Hanley ; Lee Day-Chyuan ; Reichle Walter Thomas ; Karol Frederick John ; Whiteker Gregory Todd, Ethylene polymers having superior clarity enhanced toughness, low extractables, and processing ease.
Jurgen Bachmann DK; Lars L. Finsen DK; Poul Erik Hansen DK, Lubricant for wire used for forming the stator windings of an electrical refrigerating compressor.
Pickett Wiley J. (620 N. Washington Ave. Moorestown NJ 08057) Boye Albert A. (608 College Blvd. Wenonah NJ 08090), Lubricating method and system for use in cable pulling.
Rowland Bobby A. (Carrollton GA) Sullivan Roy E. (Carrollton GA) Dodson William R. (Ranburne AL) Bohannon Steve C. (Newnan GA), Method of and apparatus for lubricating cable during continuous dry curing.
Popoola Oludele Olusegun ; Reatherford Larry Van ; Cooper Ronald Paul ; McCune Robert Corbly, Method of manufacturing a metal and polymeric composite article.
Carlson, John R.; McCardel, David Brian; Cooper, David A.; Mercier, David; Daniel, Allan W.; Andrea, Timothy M., Integrated systems facilitating wire and cable installations.
Carlson, John R.; McCardel, David Brian; Cooper, David A.; Mercier, David; Daniel, Allan W.; Andrea, Timothy M., Integrated systems facilitating wire and cable installations.
Carlson, John R.; McCardel, David Brian; Cooper, David A.; Mercier, David; Sasse, Philip; Daniel, Allan W.; Andrea, Timothy M., Integrated systems facilitating wire and cable installations.
Carlson, John R.; McCardel, David Brian; Cooper, David A.; Mercier, David; Sasse, Philip; Daniel, Allan W.; Andrea, Timothy M., Integrated systems facilitating wire and cable installations.
Bigbee, William T.; Griffin, Stephen S., Method of manufacture of electrical wire and cable having a reduced coefficient of friction and required pulling force.
Bigbee, William T.; Griffin, Stephen S., Method of manufacture of electrical wire and cable having a reduced coefficient of friction and required pulling force.
Kummer, Randy D.; Reece, David; Dixon, Mark D.; Carlson, John R.; Lam, Hai; Sasse, Philip, Method of manufacturing electrical cable having reduced required force for installation.
Bigbee, Jr., William T.; Dahlke, Sheri H.; Raedeke, Ronald A.; Gillen, Jason Drew; Debord, Melvin Glen, System, composition and method of application of same for reducing the coefficient of friction and required pulling force during installation of wire or cable.
Bigbee, Jr., William T.; Dahlke, Sheri H.; Raedeke, Ronald A.; Gillen, Jason Drew; Debord, Melvin Glenn, System, composition and method of application of same for reducing the coefficient of friction and required pulling force during installation of wire or cable.
Bigbee, Jr., William Thomas; Dahlke, Sheri H.; Raedeke, Ronald A.; Gillen, Jason Drew; Debord, Melvin Glen, System, composition and method of application of same for reducing the coefficient of friction and required pulling force during installation of wire or cable.
Bennett, Mark Douglas; Bigbee, Jr., William Thomas; Hernandez, Ramon Valenzuela, System, method and apparatus for spray-on application of a wire pulling lubricant.
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