US2657452A - Tubular getter container - Google Patents

Tubular getter container Download PDF

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Publication number
US2657452A
US2657452A US29558A US2955848A US2657452A US 2657452 A US2657452 A US 2657452A US 29558 A US29558 A US 29558A US 2955848 A US2955848 A US 2955848A US 2657452 A US2657452 A US 2657452A
Authority
US
United States
Prior art keywords
getter
envelope
container
tubular
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
US29558A
Other languages
English (en)
Inventor
Veenemans Cornelis Frederik
Jansen Frans
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 US2657452A publication Critical patent/US2657452A/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
    • 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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/70—Deforming specified alloys or uncommon metal or bimetallic work
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49792—Dividing through modified portion
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49927—Hollow body is axially joined cup or tube
    • Y10T29/49929—Joined to rod

Definitions

  • the invention relates to a tubular getter container comprising a longitudinal apertureV for volatillization of the getter and to a high-vacuum vessel, more particularly an electric discharge tube, provided with such a container.
  • getter is to be understood to mean a gas absorbing substance.
  • Such a container has a disadvantage in that cutting the tube to length must be effected a short time before its introduction into the vacuum vessel, since air is liable to enter through the open ends and bring about slowly proceeding oxidation of the barium, the barium oxide formed often becoming located loosely in the vacuum vessel.
  • a tube of metal say, iron is filled with a barium-aluminium alloy and subsequently swaged and drawn out into a wire having an external diameter of, for example, ⁇ 0.8 mm. and comprising a core of the said alloy 0.5 mm. in diameter
  • the disadvantages outlined are obviated by grinding 01T the wall of the iron envelope at one area in the direction of length so as to enable the barium to evolve readily during the heating operation.
  • the wire is then cut into lengths of about l cm. after small straps have been welded thereto and this permits of heating by high-frequency currents.
  • the use of a tubular getter container permits of providing a directional jet of getter vapour in a very simple manner in that with such a getter container, in which the active substance when Volatilized is permitted to escape through a longitudinal aperture in the envelope, this aperture is shaped into the form of a narrow slit or slot, through which the getter vapour issues in the form of a directional jet.
  • This may be effected in various ways.
  • One method starts with a, say, iron or nickel envelope shaped into the form of a tube the external diameter of which is approximately 8 mms. and the wall thickness 1.5 mm., a saw-cut about l mm. in Width being provided in the wall in the direction of length.
  • the tube is swaged in a rotaryr swaging machine or otherwise manipulated so as to close the saw-cut and then lled with an alloy of barium and aluminium and subsequently drawn out to an external diameter of.
  • the initial saw-cut beingy found to be again present in the shape of a narrow slit in the iron envelope.
  • the wall thickness of the envelope is only about 0.15 mm. the emanating vapour jet on volatilization of the getter, is found to be directed by the side walls of the slit.
  • the iron cylinder is not previously provided with a saw-cut, but directly lled with an alloy of the getter substance and then swaged and drawn out to a diameter of, for example, 0.8 mm.
  • the getter wire is then passed over a guide wheel above which is arranged a cutting Wheel or a cutter having a V-shaped cutting profile which presses or cuts a V-shaped slo-t into the envelope.
  • FIG. 1 is a sectional view of 1ja,lnown. tubular., getter container,
  • Figs. 2 and 3 are sectionalviews ofatubnlarL getter containers according to the invention.
  • Fig. 4 is an elevation of suchAV a container 1p;A
  • Fig. 5 shows an electric high-vacuumvessel*- provided with such a getter container.
  • l designates thegiron; ⁇ envelope, 2 the core constituted by gas-absorbing 20 substance.. ⁇ .According toa known.. embodiment the ⁇ envelope. l shown .in..-Figf.f 1 Yisground. so. .as to,- be-partlyzflat,,almostas far as theactive core.-
  • The. straps..provdedwith a getter container are housed in vacuum vessels, particularly ⁇ in electric .-dischargef tubes, suchl that the? slit or f, slot occupiesfthe:desired-position.
  • getter- container accor ing to the, nventionfensures -thefgetter zpreipitates f onzafvery-li.. ited-,a-rea ofthe-tube wait;
  • caseeof ssma'll-jsized-:ltubes 1 this is f vel'yydesirable in .view .l of insulation fand.; electrode capacities,, Referring tosFig..
  • thegetter container litorgether with the straprx lissecured tof a -stay pole afgetterwmirrorf is formed -ionly at azsmall':area ⁇ 65- off-fthe. tube walll
  • Thev electrode L system ⁇ I0 is;- ⁇ consequently'fnot '-struck: bywthe getter ⁇ vapour.:-

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US29558A 1947-10-27 1948-05-27 Tubular getter container Expired - Lifetime US2657452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL807972D 1947-10-27

Publications (1)

Publication Number Publication Date
US2657452A true US2657452A (en) 1953-11-03

Family

ID=19782056

Family Applications (1)

Application Number Title Priority Date Filing Date
US29558A Expired - Lifetime US2657452A (en) 1947-10-27 1948-05-27 Tubular getter container

Country Status (7)

Country Link
US (1) US2657452A (de)
BE (1) BE485478A (de)
CH (1) CH274077A (de)
DE (1) DE807972C (de)
FR (1) FR974302A (de)
GB (1) GB660375A (de)
NL (1) NL70165C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804564A (en) * 1954-04-28 1957-08-27 Machlett Lab Inc Getter structure
US2834905A (en) * 1956-03-28 1958-05-13 Bendix Aviat Corp Electron discharge device
US2869014A (en) * 1954-12-23 1959-01-13 Rca Corp Getter structure
US2872028A (en) * 1954-12-29 1959-02-03 Rca Corp Getter structure
US2907451A (en) * 1952-09-27 1959-10-06 Porta Paolo Della Getter container
US2928925A (en) * 1956-08-15 1960-03-15 Rca Corp Getter structure
US20070096649A1 (en) * 2005-10-28 2007-05-03 Roels Timothy J Electrode-mounted getter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043523B (de) * 1951-08-01 1958-11-13 Pechiney Prod Chimiques Sa Verfahren zur Herstellung von Gettern
DE1030935B (de) * 1952-09-13 1958-05-29 Varian Associates Verfahren zur Herstellung einer metallenen, das Getter enthaltenden Huelle fuer Vakuumroehren und eine nach diesem Verfahren hergestellte Huelle mit Getter
DE1064646B (de) * 1955-06-07 1959-09-03 Ernesto Gabbrielli Verfahren zum Herstellen von Gettern
DE1100185B (de) * 1959-04-02 1961-02-23 Philips Nv Verfahren zum Erhitzen eines bandfoermigen Halters fuer eine Gasbindesubstanz waehrend der Herstellung einer elektrischen Ent-ladungsroehre und mit einem derartigen Halter versehene elektrische Entladungsroehre

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US982751A (en) * 1908-05-01 1911-01-24 Orlando M Thowless Glower for electrical incandescent lamps.
US1638551A (en) * 1924-07-30 1927-08-09 Western Electric Co Electron-discharge device
US1654160A (en) * 1926-12-29 1927-12-27 Kobe Inc Method of producing screen pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US982751A (en) * 1908-05-01 1911-01-24 Orlando M Thowless Glower for electrical incandescent lamps.
US1638551A (en) * 1924-07-30 1927-08-09 Western Electric Co Electron-discharge device
US1654160A (en) * 1926-12-29 1927-12-27 Kobe Inc Method of producing screen pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907451A (en) * 1952-09-27 1959-10-06 Porta Paolo Della Getter container
US2804564A (en) * 1954-04-28 1957-08-27 Machlett Lab Inc Getter structure
US2869014A (en) * 1954-12-23 1959-01-13 Rca Corp Getter structure
US2872028A (en) * 1954-12-29 1959-02-03 Rca Corp Getter structure
US2834905A (en) * 1956-03-28 1958-05-13 Bendix Aviat Corp Electron discharge device
US2928925A (en) * 1956-08-15 1960-03-15 Rca Corp Getter structure
US20070096649A1 (en) * 2005-10-28 2007-05-03 Roels Timothy J Electrode-mounted getter

Also Published As

Publication number Publication date
NL70165C (de) 1952-01-15
CH274077A (de) 1951-03-15
FR974302A (fr) 1951-02-21
BE485478A (de)
DE807972C (de) 1951-07-09
GB660375A (en) 1951-11-07

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