US2493659A - Getter structure for electric discharge tubes - Google Patents

Getter structure for electric discharge tubes Download PDF

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Publication number
US2493659A
US2493659A US728573A US72857347A US2493659A US 2493659 A US2493659 A US 2493659A US 728573 A US728573 A US 728573A US 72857347 A US72857347 A US 72857347A US 2493659 A US2493659 A US 2493659A
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US
United States
Prior art keywords
anode
electric discharge
tube
contact
gas
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
US728573A
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English (en)
Inventor
Dorgelo Eduard Gerardus
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust 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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2493659A publication Critical patent/US2493659A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
    • H01J41/18—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes
    • H01J41/20—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/32—Anodes
    • H01J19/36—Cooling of anodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • 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
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
    • H01J7/186—Getter supports
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0027—Mitigation of temperature effects

Definitions

  • Thi'sjinvention' relates' to' an electric' discharge'V tube' comprising'an anode cooled artificially; a gaseabsorbing' material such,. fonexample, as ⁇ Y zirconium, thorium titanium. or tantalum' beingn provided'inside'thetube:
  • the arrangementof 'zirconium or a similar metal having a satisfactory gases absorbing capacity inn contact with ytl'i'e cathode may in definite2 cases@ involve the drawbackfthatthemetal ⁇ does ⁇ Iv noti' attain a*- temperature sutil cientlyfhig'h for'the absorption of all the-residual-A gases and, in addition, cannot be utilized in tubesofthe'modern'- type.
  • the zirconized body may alternatively have the shape of a helix or a Vspiral clamped around or inside the anode, itl being possible for the anode to be provided with grooves in order to make the helix contact at a few points only. Furthermore, use may be made of rods covered with gas-absorbing material,
  • Fig. 1 shows a tube according
  • Fig. 2 shows a detail of the tube of Fig. 1'.
  • Fig. 3 shows a detail of anzanode comprising grooves.
  • Y i Fig. Y4 is a helical body covered with gasabsorbing material, and
  • Fig. ' shows a particular form of'constructi'on of a tube according to the invention, i. e. ⁇ of a ⁇ soca11ed transit-time tube. e'
  • Figure 6 shows a rod shaped body covered'with f in the grooves of the anode.
  • reference 1 indicates thecylindrical anode* cooledartificially,which may be' cooled by means of a liquid supplied throughthe tubeV 21g
  • the anode I is Ysealed to the wal1'3jwhich may be of metal or glass of the tube and constitutes itself also a portion jof the wan.
  • the anode is suie rounded bya grid 4 and acathode 5.
  • a split cylinder 6 of molybdenum,'superiicially covered with zirconium, isclampedaround the anode I.
  • Jrig. 4 shows a helical zircoms'ed body which may be fastened in an ,anode which, if desired, Vmay comprise groove'sfof, opposite Vdirection of Y winding.
  • Fig. 5 shows a portion of aso-called transit ⁇ time tube in .which the electrons 4ir'ithe form of .a
  • Tubes of thisY kind operate/at very high frequencies andhigh voltages, resulting in a strong heating'.V of kthe anode I5.. at
  • the electron paths may be so influenced that theelectronsinside theanode.
  • cylinder are more orless divergent, so that the electrons impinge on the cylinder I3 to a greater or less extent.
  • the temperature and hence the gas-absorbing action of the zirconium can thus be controlled in a simple manner.
  • the divergence is preferably controlled in such a manner that the cylinder I3 is red-hot during the operation of the tube.
  • Figure 6 shows ai helical rod shaped body Il
  • An electric discharge tube comprising an artii'lcially cooled anode electrode, a body of-refractory material in poor thermal contact with said anodeelectrode, and a gas-absorbing metal sintered to said refractory body.
  • An electrice discharge tube as claimed claim 1 wherein a refractory body covered with a gas-absorbing metal' is secured to a copper anode, said anode being cooled artificially and being in heatconductive contact with said refractory body at a few points only.
  • An electric dischargev tube comprising an articially cooled anode,A a body of refractory ma-A terial in poor thermal contact with said anode,.r and zirconium metal sinteredto said refractory body.
  • An electric discharge tube rcomprising an ar- ⁇ i ticially cooled anode, a body of refractory ma-A terial in poor lthermal contact with said anode,
  • cylinder may comprisedepressed pcints. If dec Y sired, theV anode may in'part,beturned out,jso
  • the wall I2 of the tube is surrounded by a magnet EDUARDGERARDUS DORGELO. y.

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  • Lasers (AREA)
  • Discharge Lamp (AREA)
US728573A 1944-03-11 1947-02-14 Getter structure for electric discharge tubes Expired - Lifetime US2493659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL250761X 1944-03-11

Publications (1)

Publication Number Publication Date
US2493659A true US2493659A (en) 1950-01-03

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ID=19781093

Family Applications (1)

Application Number Title Priority Date Filing Date
US728573A Expired - Lifetime US2493659A (en) 1944-03-11 1947-02-14 Getter structure for electric discharge tubes

Country Status (5)

Country Link
US (1) US2493659A (enrdf_load_stackoverflow)
BE (1) BE462688A (enrdf_load_stackoverflow)
CH (1) CH250761A (enrdf_load_stackoverflow)
DE (1) DE809223C (enrdf_load_stackoverflow)
GB (1) GB648962A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915575A (en) * 1956-07-09 1959-12-01 Hoskins Mfg Company Method and apparatus for prolonging life of thermocouples
US3050651A (en) * 1956-09-04 1962-08-21 Gen Electric High temperature electron discharge device and apparatus
US3086135A (en) * 1952-06-05 1963-04-16 Bertele Hans Carl Mercury-vapour electric discharge apparatus
US3381148A (en) * 1965-04-02 1968-04-30 Army Usa Fossil fuel-fired thermionic converters
US3727089A (en) * 1970-06-24 1973-04-10 S Chow Small sized stroboscopic tube for photographic use
US5017831A (en) * 1987-12-30 1991-05-21 Gte Products Corporation Glow discharge lamp with getter material on anode
CN107180735A (zh) * 2016-03-11 2017-09-19 安捷伦科技有限公司 用于产生电子的丝极组件、以及有关的装置、系统和方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067942B (de) * 1959-10-29 VEB Werk für Fernmeldewesen, Berfin-Oberschöneweide Nicht verdampf ender Getterstoff aus Titan, Zirkon, Vanadin, Niob und gegebenenfalls Aluminium für elektrische Entladungsgefäße und Verfahren zu seiner Herstellung
NL292484A (enrdf_load_stackoverflow) * 1962-05-09
FI69215C (fi) * 1983-09-30 1985-12-10 Outokumpu Oy Saett foer aktivering av en innanfoer en gasfylld proportionalraeknare anordnad stabilisator foer gasfas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700945A (en) * 1926-05-10 1929-02-05 Loppacker Albert Plate for radiotubes
US2263164A (en) * 1941-02-25 1941-11-18 Westinghouse Electric & Mfg Co Anode
US2368060A (en) * 1942-01-01 1945-01-23 Bell Telephone Labor Inc Coating of electron discharge device parts
US2410063A (en) * 1940-07-02 1946-10-29 Univ Leland Stanford Junior High-frequency tube structure and apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700945A (en) * 1926-05-10 1929-02-05 Loppacker Albert Plate for radiotubes
US2410063A (en) * 1940-07-02 1946-10-29 Univ Leland Stanford Junior High-frequency tube structure and apparatus
US2263164A (en) * 1941-02-25 1941-11-18 Westinghouse Electric & Mfg Co Anode
US2368060A (en) * 1942-01-01 1945-01-23 Bell Telephone Labor Inc Coating of electron discharge device parts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086135A (en) * 1952-06-05 1963-04-16 Bertele Hans Carl Mercury-vapour electric discharge apparatus
US2915575A (en) * 1956-07-09 1959-12-01 Hoskins Mfg Company Method and apparatus for prolonging life of thermocouples
US3050651A (en) * 1956-09-04 1962-08-21 Gen Electric High temperature electron discharge device and apparatus
US3381148A (en) * 1965-04-02 1968-04-30 Army Usa Fossil fuel-fired thermionic converters
US3727089A (en) * 1970-06-24 1973-04-10 S Chow Small sized stroboscopic tube for photographic use
US5017831A (en) * 1987-12-30 1991-05-21 Gte Products Corporation Glow discharge lamp with getter material on anode
CN107180735A (zh) * 2016-03-11 2017-09-19 安捷伦科技有限公司 用于产生电子的丝极组件、以及有关的装置、系统和方法

Also Published As

Publication number Publication date
CH250761A (de) 1947-09-15
GB648962A (en) 1951-01-17
BE462688A (enrdf_load_stackoverflow)
DE809223C (de) 1951-07-26

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