US2100697A - Braun tube and method of producing braun tubes - Google Patents

Braun tube and method of producing braun tubes Download PDF

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Publication number
US2100697A
US2100697A US686514A US68651433A US2100697A US 2100697 A US2100697 A US 2100697A US 686514 A US686514 A US 686514A US 68651433 A US68651433 A US 68651433A US 2100697 A US2100697 A US 2100697A
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US
United States
Prior art keywords
braun
producing
tubes
coil
tube
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
US686514A
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English (en)
Inventor
Loewe Siegmund
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2100697A publication Critical patent/US2100697A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/385—Exhausting vessels

Definitions

  • outgassing by eddy current it may be desirable to employ undamped high frequency, such as supplied for example by generator.
  • impulse spark generators the formation of residual magnetism may safely be avoided if the generator is connected up in such fashion that each two consecutive spark discharges act in opposite manner 35 on the outgassing coil.
  • very rapid se- 40 quence of the sparks for example of the order of 10,000 per second
  • the transmitter itself should be preferably screened off in such fashion that its field is unable to affect the field of the out- 45 gassing coil.
  • a D. C. component in the outgassing coil should be carefully avoided. If required, there may be provided for this purpose, say, a choke parallel to the outgassing coil.
  • the invention is diagrammatically illustrated in the single figure of the drawing which shows by way of example a Braun tube containing electrodes to be degasified and a device by means of which the degasification according to the invention may be performed. 10
  • l is the Braun tube containing electrodes such as 2, 3, 4, 5 to be degasified.
  • 6 is a high frequency coil into the area of action of which the electrodes to be degasified are introduced.
  • This coil is arranged in the consuming l5 circuit of a high frequency generator, e. g. as shown, an impulse spark generator which may be of any suitable type.
  • the drawing shows a conventional arrangement in which a coil 1 connected in series with the coil 6 is adjustably coupled with 20 a coil 8 incorporated in the main oscillatory circuit of an impulse spark generator, which circuit is completed by a condenser 9 and the spark gap l0. Every two consecutive spark discharges have opposite polarities and accordingly act on the coil 6 in opposite directions.
  • the required energy is fed in over a transformer of which the drawing shows only the secondary, II.
  • the coupling between 1 and 8 may be varied as desired, and it may thereby be accomplished that the high fre- 39 quency currents through 6 slowly increase in their maximum amplitudes until the electrodes to be degasified are heated to the outgassing temperature and then increase slowly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US686514A 1932-08-29 1933-08-24 Braun tube and method of producing braun tubes Expired - Lifetime US2100697A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2100697X 1932-08-29
GB23228/33A GB429251A (en) 1932-08-29 1933-08-21 Method of producing braum tubes

Publications (1)

Publication Number Publication Date
US2100697A true US2100697A (en) 1937-11-30

Family

ID=32031658

Family Applications (1)

Application Number Title Priority Date Filing Date
US686514A Expired - Lifetime US2100697A (en) 1932-08-29 1933-08-24 Braun tube and method of producing braun tubes

Country Status (4)

Country Link
US (1) US2100697A (enrdf_load_stackoverflow)
FR (1) FR760109A (enrdf_load_stackoverflow)
GB (1) GB429251A (enrdf_load_stackoverflow)
NL (1) NL41687C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582822A (en) * 1948-12-04 1952-01-15 Rca Corp Cathode-ray tube with aluminized screen
US3188726A (en) * 1962-05-16 1965-06-15 Laske Hans Device for evaporating coatings from extremely thin metal elements
US3188735A (en) * 1960-06-27 1965-06-15 Laske Hans Method for producing very thin and bright metal wires and profiles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582822A (en) * 1948-12-04 1952-01-15 Rca Corp Cathode-ray tube with aluminized screen
US3188735A (en) * 1960-06-27 1965-06-15 Laske Hans Method for producing very thin and bright metal wires and profiles
US3188726A (en) * 1962-05-16 1965-06-15 Laske Hans Device for evaporating coatings from extremely thin metal elements

Also Published As

Publication number Publication date
GB429251A (en) 1935-05-27
NL41687C (enrdf_load_stackoverflow) 1937-10-15
FR760109A (fr) 1934-02-16

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