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GB922412A - Improvements in and relating to coating processes for heater wires - Google Patents

Improvements in and relating to coating processes for heater wires

Info

Publication number
GB922412A
GB922412A GB11299/59A GB1129959A GB922412A GB 922412 A GB922412 A GB 922412A GB 11299/59 A GB11299/59 A GB 11299/59A GB 1129959 A GB1129959 A GB 1129959A GB 922412 A GB922412 A GB 922412A
Authority
GB
United Kingdom
Prior art keywords
coating
relating
coating processes
heater wires
coating composition
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
GB11299/59A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB922412A publication Critical patent/GB922412A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • 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
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2916—Rod, strand, filament or fiber including boron or compound thereof [not as steel]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2958—Metal or metal compound in coating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Resistance Heating (AREA)

Abstract

An electrically insulating coating is formed on an electrically conductive heater wire by employing the wire as the negative electrode in an electrophoretic bath containing a suspension of coating composition, drying in air, and firing at 1375-1825 DEG C., e.g. in an atmosphere of hydrogen. The coating composition contains aluminium oxide or boron oxide, and includes the oxides of at least two of the elements titanium, vanadium, chromium, manganese, iron, cobalt, nickel, zirconium, molybdenum, rhodium, tungsten and tantalum in amount 0,7-3%. A number of examples of coating both compositions are given, which also contain aluminium and/or magnesium nitrates.
GB11299/59A 1958-04-29 1959-04-02 Improvements in and relating to coating processes for heater wires Expired GB922412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US731665A US3029360A (en) 1958-04-29 1958-04-29 Heater wire coating process

Publications (1)

Publication Number Publication Date
GB922412A true GB922412A (en) 1963-04-03

Family

ID=24940474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11299/59A Expired GB922412A (en) 1958-04-29 1959-04-02 Improvements in and relating to coating processes for heater wires

Country Status (4)

Country Link
US (1) US3029360A (en)
DE (1) DE1126520B (en)
FR (1) FR1220678A (en)
GB (1) GB922412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171247A (en) * 1984-12-26 1986-08-20 Hitachi Ltd Heater for indirect-heated cathode

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1134766B (en) * 1960-08-06 1962-08-16 Telefunken Patent Method of manufacturing a burner for an electric discharge tube
NL268393A (en) * 1960-08-19
NL269971A (en) * 1960-10-18
DE1160113B (en) * 1961-09-28 1963-12-27 Telefunken Patent Method for embedding a heating wire in a cathode sleeve for electron tubes
US3246197A (en) * 1962-10-02 1966-04-12 Westinghouse Electric Corp Cathode heater having an aluminum oxide and tungesten coating
US3249790A (en) * 1963-01-02 1966-05-03 Gen Electric Pickup tube electron gun
FR1355710A (en) * 1963-02-06 1964-03-20 Radiotechnique Further development of cathode heating filaments for electron tubes
US3372297A (en) * 1964-09-28 1968-03-05 Varian Associates High frequency electron discharge devices and thermionic cathodes having improved (cvd) refractory insulation coated heater wires
US3737714A (en) * 1964-12-18 1973-06-05 Sylvania Electric Prod Dark coated heater for vacuum tube cathode
DE1223956B (en) * 1965-01-09 1966-09-01 Fernseh Gmbh Method for manufacturing a heater for an indirectly heated cathode of an electron tube
US3401297A (en) * 1965-08-23 1968-09-10 Varian Associates Thermionic cathodes for electron discharge devices with improved refractory metal heater wires
DE2317445C3 (en) * 1973-04-06 1982-09-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method for manufacturing a heater for an indirectly heated cathode
DE2317446C3 (en) * 1973-04-06 1983-11-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method of manufacturing a heating element for an indirectly heated cathode
DE2404362B1 (en) * 1974-01-30 1975-07-31 Standard Elektrik Lorenz Ag, 7000 Stuttgart Radiator for an indirectly heated cathode
US3959764A (en) * 1974-10-09 1976-05-25 Dictaphone Corporation Gas analyzing element
DE2704870C3 (en) * 1977-02-05 1980-12-18 Bayer Ag, 5090 Leverkusen Radiant heated furnace
US8215002B2 (en) * 2007-09-29 2012-07-10 Osram Sylvania Inc. Method of making a lamp coil
CA2957525A1 (en) * 2014-08-07 2016-02-11 Henkel Ag & Co. Kgaa Continuous coating apparatus for electroceramic coating of metal coil or wire
US20200113020A1 (en) * 2018-10-05 2020-04-09 Serendipity Technologies Llc Low power high-efficiency heating element

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524601A (en) * 1950-10-03 Alumina insulating material anb
US2685528A (en) * 1954-08-03 Recrystallized alumina pebbles
DE587504C (en) * 1928-09-21 1933-11-04 Osram G M B H Komm Ges Indirectly heated cathode for discharge tubes
US2321439A (en) * 1936-09-26 1943-06-08 Hartford Nat Bank & Trust Co Method of making vitreous coated bodies
US2346654A (en) * 1939-11-24 1944-04-18 Tung Sol Lamp Works Inc Heating filament circuit
US2436907A (en) * 1945-06-23 1948-03-02 Nasa Indirectly heated cathode
US2529914A (en) * 1950-06-22 1950-11-14 Denison Mattress Factory Electrical heating element
NL87447C (en) * 1952-10-11
US2800560A (en) * 1956-04-30 1957-07-23 Riverside Mfg And Electrical S Water-proof electrical connection and method of making the same
DE1017292B (en) * 1956-07-18 1957-10-10 Telefunken Gmbh Aluminum oxide coating for the heating wire of indirectly heated cathodes of electrical discharge tubes and a method for producing an insulating coating on a heating wire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171247A (en) * 1984-12-26 1986-08-20 Hitachi Ltd Heater for indirect-heated cathode
US4745325A (en) * 1984-12-26 1988-05-17 Hitachi, Ltd. Heater for indirect-heated cathode

Also Published As

Publication number Publication date
FR1220678A (en) 1960-05-27
US3029360A (en) 1962-04-10
DE1126520B (en) 1962-03-29

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