GB715794A - Improvements in or relating to indirectly heated electric discharge tubes - Google Patents

Improvements in or relating to indirectly heated electric discharge tubes

Info

Publication number
GB715794A
GB715794A GB25430/52A GB2543052A GB715794A GB 715794 A GB715794 A GB 715794A GB 25430/52 A GB25430/52 A GB 25430/52A GB 2543052 A GB2543052 A GB 2543052A GB 715794 A GB715794 A GB 715794A
Authority
GB
United Kingdom
Prior art keywords
cathode
insulating cylinder
filament
indentations
sleeve
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
GB25430/52A
Other languages
English (en)
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB715794A publication Critical patent/GB715794A/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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Solid Thermionic Cathode (AREA)
GB25430/52A 1951-10-13 1952-10-10 Improvements in or relating to indirectly heated electric discharge tubes Expired GB715794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL715794X 1951-10-13

Publications (1)

Publication Number Publication Date
GB715794A true GB715794A (en) 1954-09-22

Family

ID=19814946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25430/52A Expired GB715794A (en) 1951-10-13 1952-10-10 Improvements in or relating to indirectly heated electric discharge tubes

Country Status (6)

Country Link
US (1) US2870366A (no)
BE (1) BE514709A (no)
DE (1) DE927521C (no)
FR (1) FR1064299A (no)
GB (1) GB715794A (no)
NL (1) NL84125C (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127617A (en) * 1981-12-11 1984-04-11 Tokyo Shibaura Electric Co Cathode structure for electron tube

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973812C (de) * 1954-01-20 1960-06-15 Siemens Ag Mittelbar geheizte Kathode fuer elektrische Entladungsgefaesse mit einer rohrfoermig ausgebildeten Kathodenhuelse
US2973449A (en) * 1957-10-23 1961-02-28 Philips Corp Electric discharge tube
BE572249A (no) * 1957-10-23
NL275209A (no) * 1961-02-24
US3214628A (en) * 1962-06-11 1965-10-26 Rca Corp Cathode assembly for electron tube
US3287080A (en) * 1963-06-27 1966-11-22 Rca Corp Electron tube mount and method of making the same
DE1614495B1 (de) * 1967-04-10 1971-03-11 Siemens Ag Mittelbar geheizte vorratskathode für elektrische entladungsgefässe
DE1933309B2 (de) * 1969-07-01 1971-05-06 Indirekt geheizte gluehkathode
US3767958A (en) * 1971-12-23 1973-10-23 Gte Sylvania Inc Electron discharge device having increased heater-cathode breakdown voltage
FR2186706B1 (no) * 1972-06-02 1974-12-27 Commissariat Energie Atomique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE360807A (no) * 1928-05-21
US1974448A (en) * 1930-04-05 1934-09-25 Henry L Crowley & Co Inc Indirectly heated cathode and insulator assembly
US2079057A (en) * 1931-06-01 1937-05-04 Raytheon Production Corp Thermionic cathode
US1982885A (en) * 1932-04-02 1934-12-04 Stupakoff Lab Inc Insulator and cathode embodying the same
US2081415A (en) * 1934-09-05 1937-05-25 Bell Telephone Labor Inc Electron emitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127617A (en) * 1981-12-11 1984-04-11 Tokyo Shibaura Electric Co Cathode structure for electron tube

Also Published As

Publication number Publication date
BE514709A (no)
NL84125C (no)
FR1064299A (fr) 1954-05-12
DE927521C (de) 1955-05-09
US2870366A (en) 1959-01-20

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