US1857203A - Leading-in conductor - Google Patents

Leading-in conductor Download PDF

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Publication number
US1857203A
US1857203A US435586A US43558630A US1857203A US 1857203 A US1857203 A US 1857203A US 435586 A US435586 A US 435586A US 43558630 A US43558630 A US 43558630A US 1857203 A US1857203 A US 1857203A
Authority
US
United States
Prior art keywords
conductor
envelope
leading
stem
sealed
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
US435586A
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English (en)
Inventor
Johannes Antonius Maria Liempt
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US1857203A publication Critical patent/US1857203A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/02—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing by fusing glass directly to metal

Definitions

  • the present invention relates to the manufacture of incandescent lamps, electric dischar tubes of the transmitting type, gasfille and vacuum rectifiers X-ra tubes, etc.,
  • ading-in conductor material issometimes fabricated. from a base metal such as tungsten, molybdenum or zirconium in powdered form and heated to a sintering temperature, simultaneously being pressed to shape after which the body is hammered and drawn.
  • the conductor may take the form of a tube which also may be drawn from the pressed and sintered body.
  • Tungsten wire which is 3 quently used for such material on account of its.
  • favorable coeflicient of expansion when compared to that of Pyrex or other hard glass in which it may be sealed is particulary susceptible to' failure of the crystal or grain structure.
  • numeral 1 designates an envelo of boro-silicate glass which may be evacuated or filled with inert gas of suitable pressure, the envelope terminatin in a stem 2. Within the envelope there is a amentary electrode 3 and a cooperating anode 4. Leading-in conductors 5 are sealed in the stem for supplying current to the electrodes.
  • These con uctors may be fabricated of any refractory metals, such as tun sten, molybdenum "or zirconium which has a avorable coefficient of expansion as com ared to that of the glass in which it is sealed and may be treated in any well known and appropriate manner to change the grain structure from the usual microcrystal formation to macrostrystalline.
  • refractory metals such as tun sten, molybdenum "or zirconium which has a avorable coefficient of expansion as com ared to that of the glass in which it is sealed and may be treated in any well known and appropriate manner to change the grain structure from the usual microcrystal formation to macrostrystalline.
  • An evacuated envelope terminating in a stem, a conductor within the envelope and a metallic member sealed in said stem for sup lying current to the conductor, said member avin a uni-crystalline structure whereas leaiia e through the stem in the region e meta a member is prevented.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US435586A 1929-11-30 1930-03-13 Leading-in conductor Expired - Lifetime US1857203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL49216A NL26811C (de) 1929-11-30 1929-11-30

Publications (1)

Publication Number Publication Date
US1857203A true US1857203A (en) 1932-05-10

Family

ID=33028936

Family Applications (1)

Application Number Title Priority Date Filing Date
US435586A Expired - Lifetime US1857203A (en) 1929-11-30 1930-03-13 Leading-in conductor

Country Status (4)

Country Link
US (1) US1857203A (de)
DE (1) DE548825C (de)
FR (1) FR705272A (de)
NL (1) NL26811C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627536A (en) * 1949-05-28 1953-02-03 Bendix Aviat Corp Electronic tube base and the like
US3219753A (en) * 1963-05-15 1965-11-23 Univ Illinois Gas-impervious electrical feedthrough for use between two zones of differing pressures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627536A (en) * 1949-05-28 1953-02-03 Bendix Aviat Corp Electronic tube base and the like
US3219753A (en) * 1963-05-15 1965-11-23 Univ Illinois Gas-impervious electrical feedthrough for use between two zones of differing pressures

Also Published As

Publication number Publication date
FR705272A (fr) 1931-06-04
NL26811C (de) 1932-05-17
DE548825C (de) 1932-04-20

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