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GB453770A - Improvements in or relating to multiple conductor electric cables insulated with magnesia - Google Patents

Improvements in or relating to multiple conductor electric cables insulated with magnesia

Info

Publication number
GB453770A
GB453770A GB7693/35A GB769335A GB453770A GB 453770 A GB453770 A GB 453770A GB 7693/35 A GB7693/35 A GB 7693/35A GB 769335 A GB769335 A GB 769335A GB 453770 A GB453770 A GB 453770A
Authority
GB
United Kingdom
Prior art keywords
magnesia
layers
layer
conductors
relating
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
Application number
GB7693/35A
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.)
LE CONDUCTEUR ELECTR BLINDE IN
Original Assignee
LE CONDUCTEUR ELECTR BLINDE IN
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 LE CONDUCTEUR ELECTR BLINDE IN filed Critical LE CONDUCTEUR ELECTR BLINDE IN
Publication of GB453770A publication Critical patent/GB453770A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • 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
    • H01B7/16—Rigid-tube cables
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49879—Spaced wall tube or receptacle

Landscapes

  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

453,770. Cables. CONDUCTEUR ELECTRIQUE BLINDE INCOMBUSTIBLE, 30, Rue d'Astorg, Paris. March 12,1935, No. 7693. Convention date, March 14, 1934. [Class 36] A cable comprises a central conductor 1, one or more tubular coaxial conductors 2, and an outer metal sheath 4, the conductors being insulated from one another and from the sheath 4 by layers, such as 3, 5, of powdered magnesia. The insulating layers may be formed by winding around each conductor a layer of magnesium wires or tapes which are subsequently converted, either layer by layer or as a whole, into magnesia by passing steam between the conductors and then heating. The cable is subjected to a drawing or rolling operation to compact the magnesia layers, and such operation may take place after the conversion of each of the layers of magnesium into magnesia when the insulating layers are separately formed.
GB7693/35A 1934-03-14 1935-03-12 Improvements in or relating to multiple conductor electric cables insulated with magnesia Expired GB453770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR651805X 1934-03-14

Publications (1)

Publication Number Publication Date
GB453770A true GB453770A (en) 1936-09-14

Family

ID=9004872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7693/35A Expired GB453770A (en) 1934-03-14 1935-03-12 Improvements in or relating to multiple conductor electric cables insulated with magnesia

Country Status (6)

Country Link
US (1) US2074777A (en)
BE (1) BE408245A (en)
DE (1) DE651805C (en)
FR (1) FR783182A (en)
GB (1) GB453770A (en)
NL (1) NL39710C (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE874955C (en) * 1950-08-01 1953-04-27 Wagener Maschf Vulcanizing device
DE1026385B (en) * 1953-09-30 1958-03-20 Siemens Ag Method of manufacturing multi-core electrical power cables
US2905919A (en) * 1956-01-17 1959-09-22 British Insulated Callenders Electric heating cables
US3020334A (en) * 1959-10-01 1962-02-06 Bell Telephone Labor Inc Electrical cable
US3254320A (en) * 1963-08-15 1966-05-31 Babcock & Wilcox Co Electric heaters
GB1215388A (en) * 1968-10-18 1970-12-09 Pyrotenax Ltd Improvements in electric cables
FR2555352B1 (en) * 1983-11-21 1987-02-20 Thermocoax Cie ARMORED CABLE WITH MINERAL INSULATION AND MANUFACTURING METHOD FOR OBTAINING SUCH A CABLE
US4665281A (en) * 1985-03-11 1987-05-12 Kamis Anthony G Flexible tubing cable system
DE3813481A1 (en) * 1988-04-21 1989-11-09 Siemens Ag METHOD FOR PRODUCING AN ELECTRIC PIPE RADIATOR
US5453599A (en) * 1994-02-14 1995-09-26 Hoskins Manufacturing Company Tubular heating element with insulating core
EP1208609A1 (en) * 1999-08-16 2002-05-29 Temperature Management Systems (Proprietary) Limited Metallurgical thermocouple
US6800835B1 (en) * 2003-06-16 2004-10-05 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Radio-frequency driven dielectric heaters for non-nuclear testing in nuclear core development
RU2531292C2 (en) * 2009-04-02 2014-10-20 Пентэйр Термал Менеджмент Ллк Heating cable with mineral insulation working on principle of skin effect
EP4216236A3 (en) 2017-02-01 2023-11-01 Nvent Services Gmbh Low smoke, zero halogen self-regulating heating cable

Also Published As

Publication number Publication date
NL39710C (en)
FR783182A (en) 1935-07-09
BE408245A (en)
DE651805C (en) 1937-10-20
US2074777A (en) 1937-03-23

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