US3667506A - Corrugated metal tube for an external conductor or sheath of an electric cable - Google Patents

Corrugated metal tube for an external conductor or sheath of an electric cable Download PDF

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Publication number
US3667506A
US3667506A US99205A US3667506DA US3667506A US 3667506 A US3667506 A US 3667506A US 99205 A US99205 A US 99205A US 3667506D A US3667506D A US 3667506DA US 3667506 A US3667506 A US 3667506A
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US
United States
Prior art keywords
metal tube
corrugations
strip
tube
corrugation
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
Application number
US99205A
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English (en)
Inventor
Robert Jocteur
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.)
Cable de Lyon Alsacienne
Original Assignee
Cable de Lyon Alsacienne
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 Cable de Lyon Alsacienne filed Critical Cable de Lyon Alsacienne
Application granted granted Critical
Publication of US3667506A publication Critical patent/US3667506A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
    • 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
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/20—Metal tubes, e.g. lead sheaths
    • H01B7/202—Longitudinal lapped metal tubes

Definitions

  • the corrugations of the two zones readily overlap one another, and the internal zone cannot penetrate below the external zone over a greater length than that of the latter, since its edge comes to abut on the narrows of the corrugations at the place where the external zone is connected to the remainder of the width of the strip.
  • the strip therefore, cannot be wound on a smaller diameter than that which results from these arrangements.
  • the corrugations of the internal zone overlap perfectly in the corrugations of the external zone, and the edge of the said internal zone comes to abut at the discontinuity in the corrugations at the end of the external zone, since at this region the corrugations which thus come opposite one another are offset relative to one another by the amount of half a corrugation.
  • FIG. 1 is a perspective view of the corrugated strip before it is curved
  • FIG. 2 is a perspective view of a section of tube produced by means of this stri DESCRIPTIO OF THE PREFERRED EMBODIMENT
  • A designates,- the external lateral edge of the'strip, B the internal lateral edge, and C the line of discontinuity in the corrugations.
  • the corrugations are progressively oflset by half a corrugation, that is to say by onehalf, and the corrugations on either side of the line C are also offset by half a corrugation.
  • the corrugations of the edge A are in register with the corrugations of the edge 8 and are placed exactly on these, until they come to abut on the discontinuities of the line C; therefore, the amount of overlap cannot exceed a length greater than the distance L between the lines B and C.
  • the invention is independent of the nature of the material of which the strip is made, which may be for example a bimetallic material, and also of the means used for assembling the two overlapping zones, which may include for example welding or the use of an adhesive substance.
  • the invention has as its object to provide a flexible tube, the
  • This tube which comprises undulations or corrugations of anydesired profile, is characterized in that, on the one hand,
  • a flexible metal tube comprising: a wound corrugated strip forming a cylinder, the direction of the corrugations being inclined relative to the transverse axis of the strip such that the pitch is equal to one-half the width of a corrugation,
  • the corrugations of the strip intermediate of its overlapped edges being abruptly laterally oflset a distance equal to the width of a half corrugation, such that the valleys of one portion of the corrugated tube to the side of the demarcation line formed by the offset, are in alignment with the apices of the tube portion to the other side of said demarcation line.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Supports For Pipes And Cables (AREA)
  • Insulated Conductors (AREA)
US99205A 1969-12-18 1970-12-17 Corrugated metal tube for an external conductor or sheath of an electric cable Expired - Lifetime US3667506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6943940A FR2071132A5 (enExample) 1969-12-18 1969-12-18

Publications (1)

Publication Number Publication Date
US3667506A true US3667506A (en) 1972-06-06

Family

ID=9044794

Family Applications (1)

Application Number Title Priority Date Filing Date
US99205A Expired - Lifetime US3667506A (en) 1969-12-18 1970-12-17 Corrugated metal tube for an external conductor or sheath of an electric cable

Country Status (4)

Country Link
US (1) US3667506A (enExample)
DE (1) DE2062539A1 (enExample)
FR (1) FR2071132A5 (enExample)
GB (1) GB1279599A (enExample)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754094A (en) * 1971-01-25 1973-08-21 Kabel Metallwerke Ghh Cable with welded corrugated metal sheath
US3987238A (en) * 1973-11-23 1976-10-19 Aeg-Elotherm G.M.B.H. Electric conductor for the conduction of electric currents of high density under heated conditions of the conducting body
US6401758B1 (en) * 2000-10-06 2002-06-11 Amir Ziv-Av Variable pitch thread configuration
US6459836B1 (en) * 1999-12-16 2002-10-01 Avaya Technology Corp. Corrugated armor for providing protection and tensile stiffness
USD632655S1 (en) * 2007-07-13 2011-02-15 Heyman Kenneth J Cable cover
EP2605250A1 (en) * 2011-12-12 2013-06-19 Unison Industries LLC Ignition lead

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2378493B (en) * 1998-03-07 2003-04-09 Crp Group Ltd Protection of underwater elongate members

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US971400A (en) * 1908-02-03 1910-09-27 Joseph Ralph Orwig Corrugated metal culvert.
US1652703A (en) * 1926-06-17 1927-12-13 American Rolling Mill Co Corrugated-metal culvert
US2606953A (en) * 1946-09-23 1952-08-12 Int Standard Electric Corp High-frequency coaxial cable outer conductor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US971400A (en) * 1908-02-03 1910-09-27 Joseph Ralph Orwig Corrugated metal culvert.
US1652703A (en) * 1926-06-17 1927-12-13 American Rolling Mill Co Corrugated-metal culvert
US2606953A (en) * 1946-09-23 1952-08-12 Int Standard Electric Corp High-frequency coaxial cable outer conductor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754094A (en) * 1971-01-25 1973-08-21 Kabel Metallwerke Ghh Cable with welded corrugated metal sheath
US3987238A (en) * 1973-11-23 1976-10-19 Aeg-Elotherm G.M.B.H. Electric conductor for the conduction of electric currents of high density under heated conditions of the conducting body
US6459836B1 (en) * 1999-12-16 2002-10-01 Avaya Technology Corp. Corrugated armor for providing protection and tensile stiffness
US6401758B1 (en) * 2000-10-06 2002-06-11 Amir Ziv-Av Variable pitch thread configuration
WO2002029258A3 (en) * 2000-10-06 2002-09-12 Amir Ziv-Av Variable pitch thread configuration
USD632655S1 (en) * 2007-07-13 2011-02-15 Heyman Kenneth J Cable cover
EP2605250A1 (en) * 2011-12-12 2013-06-19 Unison Industries LLC Ignition lead
US8766095B2 (en) 2011-12-12 2014-07-01 Unison Industries, Llc Ignition lead

Also Published As

Publication number Publication date
FR2071132A5 (enExample) 1971-09-17
DE2062539A1 (de) 1971-06-24
GB1279599A (en) 1972-06-28

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