US3885380A - Manufacturing filled cable - Google Patents

Manufacturing filled cable Download PDF

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Publication number
US3885380A
US3885380A US388694A US38869473A US3885380A US 3885380 A US3885380 A US 3885380A US 388694 A US388694 A US 388694A US 38869473 A US38869473 A US 38869473A US 3885380 A US3885380 A US 3885380A
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United States
Prior art keywords
core
composition
conductors
bath
interstices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US388694A
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English (en)
Inventor
Joseph Michael Hacker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Inc
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to US388694A priority Critical patent/US3885380A/en
Priority to CA202,789A priority patent/CA1027339A/fr
Priority to DE19742438533 priority patent/DE2438533C2/de
Priority to CH1097074A priority patent/CH584805A5/xx
Priority to JP49092886A priority patent/JPS5831687B2/ja
Priority to GB3595774A priority patent/GB1484068A/en
Priority to GB687477A priority patent/GB1484069A/en
Application granted granted Critical
Publication of US3885380A publication Critical patent/US3885380A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.

Definitions

  • ABSTRACT A filled telephone service cable which runs from a dis tribution cable to a subscribers premises or to a pay station is another link in a buried communications system having a water-resisting capability.
  • a service cable is manufactured to include four individually insulated conductors constructed of a material having at least a predetermined yield strength twisted to form a spiralled quaded core.
  • the interstices be tween the conductors and between the conductors and a subsequently applied jacket are filled with a flame retardant water-resistant compositionv
  • the core including the individually insulated conductors, is advanced into a bath of the waterproofing composition.
  • the configuration of the core is changed as the conductors are advanced through the bath to permit substantially the entire periphery of the conductors to be exposed to the composition.
  • the conductors are permitted to reform into the original core configuration with portions of the composition filling the interstices between the conductors. The reformation is facilitated by the changes in strain produced by the elastic recovery of the conductors.
  • Excess composition is removed from the outwardly facing portions of the core as the core is advanced out of the bath.
  • This invention relates to methods which may be used for manufacturing filled cable, and more particularly, to manufacturing a spirally quaded cable in which the interstices between the individually insulated conductors and between the conductors and any covering applied thereover is filled with a waterproofing, flameretardant composition.
  • the last link in a buried loop plant includes a so called service wire or cable which extends from the distribution cable to a subscribers premises or to a pay station.
  • the service cable should be filled with a waterresistant composition and since the service cable extends to subscribers premises, any waterproofing composition must also be flame-retardant
  • a composition which is water-resistant and flame retardant for filling the interstices of a service cable is disclosed and claimed in an application filed of even date herewith in the names of J. M. hacker and E. S. Sauer, Ser. No. 388,695.
  • the service cable is constructed to include four individually insulated conductors.
  • the conductors preferably are twisted together. instead of in pairs, to form what is commonly referred to in the art as a spiralled. star-quad.
  • the conductors are twisted about an imaginary longitudinal axis with the resulting core con figuration including what appears as a star-shaped central opening.
  • This invention provides methods for manufacturing a filled cable. Specifically, the methods are used to produce a quaded service cable in which there is a substantial filling of the interstices of the cable including the central core space thereof.
  • a plurality ofelongated members are stranded about a longitudinal center line to form a core with each of the elongated members having at least a predetermined yield strength.
  • the predetermined yield strength is stated in terms of a unit stress to which the elongated member is subjected will return to a certain percent of its original configuration when the load causing the stress is removed.
  • the yield strength may be that of a material from which the conductive element of a single insulated conductor which comprises an elongated member is constructed. Or the yield strength may be a composite of the materials from which a twisted conductor pair is constructed.
  • the stranded core is advanced through a bath of a composition. Forces are applied to the core to (l) cause the core configuration to be changed to expose portions of the elongated members which in the origi nal configuration of the core are not exposed to the composition, and then (2) permit the elongated members because of the elastic properties associated with the yield strength thereof to be reformed into the stranded core and cause the interstices between the elongated members to be filled substantially with the composition.
  • Excess composition is removed from the core to form a generally regularly shaped contour of the composition about the core.
  • FIG. 1 is a sectional view of a service cable which includes four individually insulated conductors and a waterproofing composition for filling the interstices of the core between the conductors and between the core and inner jacket, with the spacing between adjacent ones of the conductors being exaggerated for purposes of illustrating the coating thereof with the composition;
  • FIG. 2 is a perspective view of an apparatus for carry ing out the principles of this invention which may be used to apply the waterproofing composition to the service cable;
  • FIG. 3 is an elevational view of a portion of the apparatus of FIG. 2 showing an arrangement of rollers over which the service cable is passed;
  • FIGS. 4A-4C are a series of end views of the conductors which comprise the cable core at various stages in the construction and filling process.
  • FIG. 1 there is shown a cable, designated generally by the numeral 10, which includes four polyethylene-insulated conductors ll1l.
  • the four conductors 11-11 are twisted together about a longitudinal axis 12 to form a spirally quaded core, designated generally by the numeral 13 (see FIG. 4A).
  • the conductors 11-11 are arranged about the axis 12 so as to form a central starshaped opening 14 (see FIG. 4A). Because of the shape of the opening 14, this con figuration cable is generally referred to as a starquaded cable.
  • the individual polyethylene-insulated conductors ll-II are enclosed by an innerjacket 16 (see FIG. I) which includes a polyvinyl chloride constituent, a metallic microorganism shield 17 and an outer jacket I8.
  • an innerjacket 16 which includes a polyvinyl chloride constituent, a metallic microorganism shield 17 and an outer jacket I8.
  • the service cable 10 Prior to the jacketing of the core 13, the service cable 10 must have the interstices thereof, including the central opening 14, filled with a waterproofing composition 19 such as that disclosed and claimed in the above-identified application filed on even date herewith in the names of 1. M. hacker and E S. Sauer.
  • the mater-mi from which the conductors is constructed have at icast a predetermined yield strength which causes the cure to tend to retain its initially formed configuration or to regain that configuration if delorrncd.
  • the yield strength is the: unit stress at which a material exhibits a definite limiting set.
  • the set is expressed as a unit of deformation and the limiting value is determined by the use of the material.
  • a yield strength of a material is generally quoted as a unit stress with a specified offset being stated as a percent This physical property of the materia indicates that the material subjected to the specified unit stress returns to only a specified associated percent of its originai configuration when the load causing the stress is removed from the specimen.
  • Annealed copper has a j.ieid strength of llhtititl pounds per square inch at 0.5 percent offset. Hence, a specimen constructed from anncalcd copper will return to within 995 percent of its original configuration when subjected to a stress of ltHltlt) pounds per square inch.
  • the conductive elements comprising the core 13 and which are regrouped during the filling process must rave at least a predetermined yield strength which has een found to he llLUUll pounds per square inch at 1J5 percent offset. It is important to realize that if the rearrangement of the core 13 is with respect to individual conductors i11 1. as in the case of the quaded cable 10. then the material of the individual conductors must have a yield strength of at least IU UUU pounds per square inch at 0.5 percent offset. lfthe cable 10 is comprised of individually twisted pairs of conductors and the rearrangement occurs as among the different pairs. then each pair must have a predetermined yield strength in excess of 10.000 pounds per square inch at (1.5 percent offset.
  • the elastic recovery of a given material and hence the spring-back characteristics thereof are proportional to the yield strength.
  • Advantage is taken of the yield strength. to permit the conductors -11 to spring back and reform the core 13 to its initial configuration following the deformation of the core to allow exposure of generally all of the insulated conductor surface area to the waterproofing composition. Of course. care must be exercised during deformation so as not to cause a permanent set to occur in the conductor material.
  • Each of the conductors 11-11 of the quaded core 13 herein is constructed of a steel core center eiad with copper and then insulated with polyethyiene. It has been found that the composite copper-steel construction has a yield point in excess of 1011011 pounds per square inch at 0.5 percent offset.
  • the four conductors 11-11 are twisted together about the axis 14 by methods and apparatus well known in the art to have a right or left-hand twist of a predetermined lay.
  • the resulting quaded core 13 has a configuration such as that shown in FIG. 4A.
  • the apparatus 20 includes a tank 21 for containing the composition 19 and having an entrance opening 22.
  • the opening 22 is sized to permit the core 13 of the cable 10 to be advanced therethrough in a direction shown in F10. 2
  • rollers 26, 27 and 28 Interior of the tank 21 are three spaced rollers 26, 27 and 28.
  • the rollers are arranged as shown in FlGS. 2 and 3 and are mounted rotatably on parallel axes within the tank 21.
  • the core 13 of the service eabie 10 is passed under the roller 26, up over and around the roller 27, and then down under the roller 28. From there. the core 13 is advanced through a wiping die 29 and exits from the tank 21.
  • rollers 26, 27 and 28 are im portant in practicing the methods of this invention to produce a filled quaded cable It).
  • the rollers 26, 27 and 28 each have a diameter of approximately thrcefourths of an inch.
  • the rollers are constructed with a polished steel surface so as not to damage the insulation of the cont'luctors 1I-11 as the conductors are advanced thcreover.
  • the arrangement of the rollers 26, 27 and 28 within the tank 21 is also important in order to avoid undue deformation of the conductors 11-11 and to facilitate the changing of the core configuration and the subsequent reforming thereof.
  • the angle which each of the conductors l]-11 makes with the horizontal. i.c. a line parallel to a line joining the centers of the rollers 26 and 27. when being passed from engagement with the roiler 26 into engagement with the roller 27, or from the roller 27 to the roller 28, is defined herein as the angle of attack a, (see FIG. 3).
  • the preferred angle of attack lies within the range of 20 to 70 (see FIG. 3). More specifically, the most preferred angle of attack has been found to be approximately 30.
  • the angle of attack is also important in permitting the inherent spring-back characteristics of the conductors ll-ll to cause the regrouping of the conductors into a core following the coating thereof.
  • the angle of attack is greater than 70, the tension forces applied to the conductors 11-11 becomes excessive and may tend to crush the insulation. Also, an unduly high angle of attack may attach some difficulty to the subsequent reforming of the core 13, since the material of the conductors "-11 may undergo a permanent set. If the angle of attack is less than 20, the engagement of the conductors 11-11 with the surface of the roller 27 is less than that desired.
  • the tension in the manufacturing line is important in order to avoid deforming the conductors as the conductors are advanced over the rollers 26, 27 and 28 in the coating tank 21. It has been found that an acceptable tension in the line is approximately 15 to pounds as applied by a capstan (not shown).
  • the roller arrangement and coating bath combination may be used to coat successive sections of the conductors 11-11 of the core 13 of the service cable 10 provided that the conductors may be successfully regrouped prior to exiting from the tank 21 from the wiping die 29.
  • the material from which the conductors ll11 is constructed must have at least the predetermined yield strength suffciently high to permit the regrouping.
  • the conductors ll11 would be supple as they are advanced over the rollers. In that situation, the initial configuration of the core 13 could be changed from that at the entrance die 22 to the tank 21. However, the conductors 1l-11 could not then be reformed into the initial configuration (such as that shown in FIG. 4A) prior to the exit die 29.
  • initial configuration refers to the shape of the core 13 formed by the conductors 11-11 and the positioning of each of the conductors in the core relative to the other conductors.
  • the reformation of the conductors 11-11 into the initial configuration does not necessarily require that the orientation of the cross-section of the core 13 with respect to some coordinate axes system be the same as that when the core was advanced into the tank 21.
  • roller arrangement used in practicing the methods of this invention, coupled with the conductors being constructed from a material of sufficient yield strength, allow the conductors 11-11 which have been rearranged from the initial core configuration shown in FIG. 4A to unexpectedly spring back together as the conductors are advanced over the rollers.
  • the wiping die 29 is constructed so as to have an opening therethrough slightly greater than the outside diameter of the core of the service cable 10. For example, looking at FIG. 1, the distance between outwardly facing surfaces of the insulation of opposed ones of the conductors ll-ll as measured along a line connecting their centers is approximately 0.l45 inches. The size of the opening in the die 29 is approximatelcy 0. inches. This leaves a 2.5 mil thickness of the waterproofing composition 19 around the quaded core 13 as the core is advanced through the wiping die 29.
  • the core 13 comprising the conductors II-ll is advanced through the entrance die 22 into the tank 21 and then along a torturous path into and then out of engagement with each of the rollers 26, 27 and 28.
  • the configuration of the core 13 as initially twisted into a spiralled quad is that shown in FIG. 4A.
  • FIG. 4A it would not be possible to fill the central opening 14 with the compositions 19 by moving the core 13 in that configuration through a bath of the composition.
  • FIG. 4A it has been found that even pressure filling techniques with or without vacuum evacuation are not successful in filling the opening 14.
  • the conductors 11-11 tend to become displaced from the so-called star-quad array of the core 13 being advanced into the tank 21.
  • the conductors 11-11 are displaced into a general side-by-side arrangement as shown in FIG. 4B as the conductors are passed over the roller 27.
  • This behavior is extremely important in applying a coating of the composition to the outer periphery of the conductors 11-11.
  • This constant reording of the conductors 1l11 causes the air therebetween in the opening 14 to be pushed out and composition to be moved in.
  • the composition 19 tends to cling to the individually insulated conductors 11-11.
  • the reformed core 13 then is advanced through the exit die 29.
  • the exit die 29 wipes excess amounts of the composition 19 from the core 13 with a 2.5 mil coating of the composition remaining about the outside surfaces of the conductors 11-11 (see FIG. 4C).
  • the wiping die 29 produces a smooth regularly shaped generally circular outer contour of the coating composition 19 compatible with the inner jacket 16 to be extruded thereover.
  • the conductors ll-ll have been further displaced angularly.
  • the conductor designated llu occupied what may be called a 12 oclock position as the core 13 entered the tank 21 and a so-called 3 o'clock position when passing over the roller 27.
  • the conductor llu oc cupies generally a 9 oclock position as the core exits from the tank 21.
  • the five pair conductor service cable (not shown) includes five twisted pairs of conductors. each conduc tor pair again being constructed of a material or combi nation of materials having a total yield strength of at least approximately 10,000 pounds per square inch at 0.5 percent offset.
  • This construction cable is generally manufactured with a predetermined lay with the five pairs stranded about the axis 12. This results in an unstable configuration.
  • a method of making a stranded core having the interstices thereof filled with a composition which includes the steps of:
  • a method of making a cable core having the interstices thereof filled with a composition which includes the steps of:
  • each of the conductors having a conductive element thereof made from a material having at least a predetermined yield strength
  • a method of making a quaded cable having the in terstices thereof filled with a composition which includes the steps of:
  • each of the conductors having a conductive element thereof made from a material having at least a predetermined yield strength
  • a method of applying a Waterproofing composiof the core and the subsequent removal therefrom tion to a stranded core comprised of a plurality of elon- 0f the excess amounts of the composition causing gated members which includes the steps of: the interstices thereofto be filled with the composiadvancing the core through a bath of a composition, tion.
  • the core is adcessive sections of the core to expose substantially vanced in a path into, and through the bath in the prethe entire periphery of each of the elongated mem- 1r determined tortuous path and then in a path out of the bers to the composition and then (2) to facilitate bath of the composition, the tortuous path including a the reformation of the core because of the yield portion at some predetermined angle to the path into strength of the material from which the members the composition and a portion at some predetermined is made being at least a predetermined value; and angle to the path out of the bath.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electric Cables (AREA)
US388694A 1973-08-15 1973-08-15 Manufacturing filled cable Expired - Lifetime US3885380A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US388694A US3885380A (en) 1973-08-15 1973-08-15 Manufacturing filled cable
CA202,789A CA1027339A (fr) 1973-08-15 1974-06-19 Fabrication de cables fillerises
DE19742438533 DE2438533C2 (de) 1973-08-15 1974-08-10 Schwerentflammbare, wasserfeste Kabelfüllmasse
CH1097074A CH584805A5 (fr) 1973-08-15 1974-08-12
JP49092886A JPS5831687B2 (ja) 1973-08-15 1974-08-15 撚合コアの製造方法
GB3595774A GB1484068A (en) 1973-08-15 1974-08-15 Manufacture of filled cable
GB687477A GB1484069A (en) 1973-08-15 1974-08-15 Manufacture of filled cable

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129466A (en) * 1974-05-28 1978-12-12 Industrie Pirelli Societa Per Azioni Method for impregnating stranded wires during stranding thereof
US4171609A (en) * 1977-08-04 1979-10-23 Siemens Aktiengesellschaft Method and apparatus for manufacturing cables and lines with SZ-twisted elements
US4250702A (en) * 1978-04-27 1981-02-17 Frohlich & Wolff Gmbh Multifilament thread and method of forming same
US4269024A (en) * 1978-08-01 1981-05-26 Associated Electrical Industries Limited Strength members for the reinforcement of optical fibre cables
US4325750A (en) * 1978-11-09 1982-04-20 The Fujikura Cable Works, Limited Method for manufacturing a stranded conductor for an electric power cable
US4427718A (en) 1982-05-27 1984-01-24 Patrick Heron Wedge encapsulation method
US4445321A (en) * 1982-11-29 1984-05-01 Hutchinson Raymond E Tendon construction for posttensioning prestressed concrete and the method of making such tendons
US4870814A (en) * 1988-04-29 1989-10-03 Orscheln Co. Process for manufacturing corrosion resistant cable
US5714093A (en) * 1994-10-21 1998-02-03 Elisha Technologies Co. L.L.C. Corrosion resistant buffer system for metal products
USH1715H (en) * 1996-08-13 1998-04-07 Babolat Vs Process and device for the manufacture of a string for stringing tennis rackets or the like and string resulting therefrom
US5871668A (en) * 1994-10-21 1999-02-16 Elisha Technologies Co. L.L.C. Corrosion resistant buffer system for metal products
US5876528A (en) * 1995-02-17 1999-03-02 Bently Nevada Corporation Apparatus and method for precluding fluid wicking
US6080334A (en) * 1994-10-21 2000-06-27 Elisha Technologies Co Llc Corrosion resistant buffer system for metal products
US6164053A (en) * 1996-10-15 2000-12-26 Otis Elevator Company Synthetic non-metallic rope for an elevator
US6169251B1 (en) * 1997-03-31 2001-01-02 The Whitaker Corporation Quad cable
US6293005B1 (en) 1999-03-01 2001-09-25 Bently Nevada Corporation Cable and method for precluding fluid wicking
US6295799B1 (en) * 1999-09-27 2001-10-02 Otis Elevator Company Tension member for an elevator
US6469251B1 (en) 2000-05-15 2002-10-22 Tyco Electronics Corporation Vapor proof high speed communications cable and method of manufacturing the same
US20040244789A1 (en) * 2001-11-13 2004-12-09 Christian Jentgens Sawing wire
US20100084159A1 (en) * 2008-10-02 2010-04-08 George Albert Drew Sealed cable and terminal crimp
EP2259441A3 (fr) * 2003-07-11 2013-05-01 Panduit Corporation Suppression de la diaphonie au moyen d'une fiche de connexion perfectionnée
US20150101306A1 (en) * 2012-03-01 2015-04-16 Dsm Ip Assets B.V. Method and device for impregnating a rope with a liquid material
CN105070392A (zh) * 2015-08-27 2015-11-18 无锡一名精密铜带有限公司 一种井下用电力电缆
US9658417B2 (en) 2013-12-02 2017-05-23 Tyco Electronics Subsea Communications Llc Conductive water blocking material including metallic particles and an optical cable and method of constructing an optical cable including the same

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US1745285A (en) * 1928-02-17 1930-01-28 Edwin J Whiffen Apparatus for impregnating stranded elements
US2757101A (en) * 1951-06-29 1956-07-31 American Enka Corp Method of and apparatus for making sized threads, not twisted, of artificial silk
US2763563A (en) * 1953-10-05 1956-09-18 Leo B Clougherty Apparatus and method for coating multifilament glass yarn
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US3443374A (en) * 1966-09-30 1969-05-13 All American Eng Co Encapsulated wire cable and method of encapsulation thereof
US3695027A (en) * 1970-06-26 1972-10-03 Albert R Copp Method for making twisted cable
US3779844A (en) * 1971-12-10 1973-12-18 Uniroyal Inc Method and apparatus for improving the tensile strength of a multifilament glass strand
US3791132A (en) * 1970-12-03 1974-02-12 Techn Ind Inst Textile De Fr C Process for sizing textile fibres

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Publication number Priority date Publication date Assignee Title
US1251032A (en) * 1916-08-28 1917-12-25 Goodyear Tire & Rubber Apparatus for cementing strands of cords.
US1745285A (en) * 1928-02-17 1930-01-28 Edwin J Whiffen Apparatus for impregnating stranded elements
US2757101A (en) * 1951-06-29 1956-07-31 American Enka Corp Method of and apparatus for making sized threads, not twisted, of artificial silk
US2763563A (en) * 1953-10-05 1956-09-18 Leo B Clougherty Apparatus and method for coating multifilament glass yarn
US3244545A (en) * 1961-05-10 1966-04-05 Owens Corning Fiberglass Corp Cellular resins reinforced with siliceous material
US3443374A (en) * 1966-09-30 1969-05-13 All American Eng Co Encapsulated wire cable and method of encapsulation thereof
US3695027A (en) * 1970-06-26 1972-10-03 Albert R Copp Method for making twisted cable
US3791132A (en) * 1970-12-03 1974-02-12 Techn Ind Inst Textile De Fr C Process for sizing textile fibres
US3779844A (en) * 1971-12-10 1973-12-18 Uniroyal Inc Method and apparatus for improving the tensile strength of a multifilament glass strand

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129466A (en) * 1974-05-28 1978-12-12 Industrie Pirelli Societa Per Azioni Method for impregnating stranded wires during stranding thereof
US4171609A (en) * 1977-08-04 1979-10-23 Siemens Aktiengesellschaft Method and apparatus for manufacturing cables and lines with SZ-twisted elements
US4250702A (en) * 1978-04-27 1981-02-17 Frohlich & Wolff Gmbh Multifilament thread and method of forming same
US4269024A (en) * 1978-08-01 1981-05-26 Associated Electrical Industries Limited Strength members for the reinforcement of optical fibre cables
US4325750A (en) * 1978-11-09 1982-04-20 The Fujikura Cable Works, Limited Method for manufacturing a stranded conductor for an electric power cable
US4427718A (en) 1982-05-27 1984-01-24 Patrick Heron Wedge encapsulation method
US4445321A (en) * 1982-11-29 1984-05-01 Hutchinson Raymond E Tendon construction for posttensioning prestressed concrete and the method of making such tendons
US4870814A (en) * 1988-04-29 1989-10-03 Orscheln Co. Process for manufacturing corrosion resistant cable
US5714093A (en) * 1994-10-21 1998-02-03 Elisha Technologies Co. L.L.C. Corrosion resistant buffer system for metal products
US6399021B1 (en) 1994-10-21 2002-06-04 Elisha Technologies Co Llc Method of treating concrete structures
US5871668A (en) * 1994-10-21 1999-02-16 Elisha Technologies Co. L.L.C. Corrosion resistant buffer system for metal products
US6106741A (en) * 1994-10-21 2000-08-22 Elisha Technologies Co Llc Corrosion resistant wire rope product
US6080334A (en) * 1994-10-21 2000-06-27 Elisha Technologies Co Llc Corrosion resistant buffer system for metal products
US6291773B1 (en) 1995-02-17 2001-09-18 Bently Nevada Corporation Apparatus and method for precluding fluid wicking
US5876528A (en) * 1995-02-17 1999-03-02 Bently Nevada Corporation Apparatus and method for precluding fluid wicking
USH1715H (en) * 1996-08-13 1998-04-07 Babolat Vs Process and device for the manufacture of a string for stringing tennis rackets or the like and string resulting therefrom
US6164053A (en) * 1996-10-15 2000-12-26 Otis Elevator Company Synthetic non-metallic rope for an elevator
US6169251B1 (en) * 1997-03-31 2001-01-02 The Whitaker Corporation Quad cable
US6293005B1 (en) 1999-03-01 2001-09-25 Bently Nevada Corporation Cable and method for precluding fluid wicking
US6610932B2 (en) 1999-03-01 2003-08-26 Bently Neveda, Llc Cable and method for precluding fluid wicking
US6295799B1 (en) * 1999-09-27 2001-10-02 Otis Elevator Company Tension member for an elevator
AU2001259762B2 (en) * 2000-05-15 2006-02-02 Tyco Electronics Corporation Vapor proof high speed communications cable and method of manufacturing the same
US6469251B1 (en) 2000-05-15 2002-10-22 Tyco Electronics Corporation Vapor proof high speed communications cable and method of manufacturing the same
US20040244789A1 (en) * 2001-11-13 2004-12-09 Christian Jentgens Sawing wire
US20070261690A1 (en) * 2001-11-13 2007-11-15 Sia Abrasives Industries Ag Sawing Yarn
EP2259441A3 (fr) * 2003-07-11 2013-05-01 Panduit Corporation Suppression de la diaphonie au moyen d'une fiche de connexion perfectionnée
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