US2824640A - Getter containers and a method of manufacturing such containers - Google Patents

Getter containers and a method of manufacturing such containers Download PDF

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Publication number
US2824640A
US2824640A US377917A US37791753A US2824640A US 2824640 A US2824640 A US 2824640A US 377917 A US377917 A US 377917A US 37791753 A US37791753 A US 37791753A US 2824640 A US2824640 A US 2824640A
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United States
Prior art keywords
container
getter
containers
tube
gettar
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Expired - Lifetime
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US377917A
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English (en)
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Porta Paolo Della
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/40—Joints for furniture tubing
    • F16B12/42—Joints for furniture tubing connecting furniture tubing to non-tubular parts

Definitions

  • Such stabilizecl alloys which are provided to act as chemical rafiners for the vacuum of valves and vacuum of gas filled electronic ,tubes, ara usually introduced into these davices by.means of.metallic containers, which are then heated byinductive currents of high frequency through coils arrangedron the external part of the valve or eiactronic tube,- so that the active metal which is known as gettar evaporates.
  • This invention relates to an improved container for said gettar, and according to the invention the container comprises a split tube or charinal section member of toroidal, ring or similar closed geometrie shape, said split tube or channel section member having a longitudinal slit for the escape of the activa metal vapours of the gettar.
  • the container may be furthermore improved by making it from a particular composition of raw materials.
  • Some metals are not suitable tor containing gettar material, either by reason of the fact that the container must be made of a metal having a melting point which is higher than the temperature of evaporation of the gettar, or by reason of the fact that many metals are strongly corroded and also alloyad by the getter material in melted state.
  • an essential characteristic is that the metal constituting the container must i be capable of being easily heated by inductive high frequency currents. There are metals that possess one or more of these characteristics, but none possess all of them. It has been found however that improved containers in the form according to this invention may be manufactured by constructing them with two layers of different metals, suitably bonded togethar, for instance by plating, by any other known method.
  • FIGS. l, 2 and 3 show three embodimants of containers in accordance with the invention
  • Figures 4 and 5 show cross sactions of two constructions of containers according to the invention
  • FIGS 6 and 7 illustrate open containers of V and U section respectively
  • Figura 8 is a cross section of art example of a container triade With more than due layer of difierent metals.
  • One ambodiment of the inventin consists of a small metallic tube in the form of a continuous ring and filled With an alloy gettar material.
  • continuous ring is to be understood any continuous or closed shape, such as circular ( Figure 1) Oval ( Figure 3) rectangular ( Figure 2) or any other suitable closed shape.
  • a particular characteristic of the invention consists in the cross sectional shape of the continuous ring shaped container. Two examples of suitable cross-section shape for the tubular container 'according to this invention are shown in Figures 4 and 5.
  • a slit F through which the active vapour of the gettar material passes when the tubular container is heated.
  • a further feature ot the invention consists in providing a small Wing A on one side of the slit F in such a way that the vapour issuing from the container is direc'ted in accordance With a pradetermined angle defined by arrows Y.
  • the angle defined by arrows Y is determined by the inclination of said small wing A, and in this manner it is possible to project onto the glass of the valve or of the electronic tube a mirror of metal of the desired shape, amplitude and locality.
  • Another advantage of the container aceording to the invention lies in the fa-ct that the high frequency currents for heating the container are totally enclosed within the tubular container itself, thus avoiding any need of undesirable and often harrnful supports.
  • a further advantage consists in the extreme lightness and very small thermic mass of the container. The latter does not include Weldings liabla to create fracturas in the small tube andlosses of evaporated metal. Indeed a thin supporting wire, that bears the ring shaped container within the valve may be simply clasped or hooked around the small tube of the container, instead of a heavy support mambar being welded to it.
  • the containers M shown in Figures 6 and 7, are of V and U shaped cross-section respectively.
  • the gettar material is put onto the bottom of the container where it -is pressed, in order that it firmly adheres to it.
  • diraction oli discharge of the gettar vapours is indicated by the arrows Y.
  • the wall of the container can be formed differently to vary the angle of discharge of the gettar vapours.
  • the walls of the container may be arranged at difierent angles from these shown, and/ or one of the walls of the container may be extended beyond the other wall.
  • Figure 8 illustrates a particular construction of container, according to the invention, said container being composed of three layers, viz: a central layer B made for instance of pure iron or of a special steel which is not corrodable by the gettar material, the purpose of this layer being to prevent the breaking down of the container, When heated for melting the gettar materia]; an external layer A, for instance made of nickel or alurninum, or any other suitable metal being a good -conductor of the inductive high frequency currant, the purpose of which is to facilitata the heating of the container, and an internal layer C, which may suitably consist of characteristics of which are similar to those of the metal of the external layer A, which is a good conductor of high frequency current or by a metal which reacts With the getter alloy advantageously, to influence the and C may be bonded together in any known manner, for instance by plating.
  • the two layers A and C or the three layers A, B and C may be united by mercly folding the upper edges of the inner and outer layers over each other.
  • the invention also includes a method of manufacturing the above described improved container, said method consisting of the steps of cutting a frame (of, for example, closed, circular, oval, square or rectangular shape) from thin metal sheet; pressing said metal frame in a mould to form it into the desred channelsection shape (for example into V or U cross section) fillng the channel section frame With getter material alloy; pressing the getter material into the bottom channe1 of the frame and finally closing the channel excessively to prevent the getter material from coming out of the channel but to leave a narrow slit for the escape of the getter vapours.
  • a frame of, for example, closed, circular, oval, square or rectangular shape
  • the desred channelsection shape for example into V or U cross section
  • the method of manufacturing a getter assembly comprising the steps of cutting a substantially annular shaped open frame from thin metal sheet material; pressing the frame upon itself to form a channel shaped tube having opposing side walls of substantially egual height;
  • a container for getter material comprising a channel shaped tube having opposing side walls and a bottorn wall connecting the side walls within whch a body of. getter material is packed, one of said side walls having an upper portion beat laterally over onto the material and disposed substantially normal to the other side wall and spaced therefrom to define therewith a slit for the escape of getter vapors and the other side wall having an upper portion extending upwardly above the slit and disposed angularly thereto to form a wing for directing the vapors issuing from the slit.
  • a getter asse'mbly comprising a channel shaped tube including a bottom wall and opposing side walls, a body of getter material packed in the tube between the side walls, one of said walls having an upper portion disposed above the getter material and bent over it into substantially right angular relationship with the other side wall and spaced slightly from the other side wall to form a s1it for the escape of getter vapors, the other side wall having an upper portion extending above the getter material and above the slit and disposed in angular relationship with the slit to form a wing for directing the getter vapors from the tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Packages (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Lasers (AREA)
US377917A 1952-09-27 1953-09-01 Getter containers and a method of manufacturing such containers Expired - Lifetime US2824640A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT736475X 1952-09-27
IT1721557 1957-11-30

Publications (1)

Publication Number Publication Date
US2824640A true US2824640A (en) 1958-02-25

Family

ID=26326926

Family Applications (2)

Application Number Title Priority Date Filing Date
US377917A Expired - Lifetime US2824640A (en) 1952-09-27 1953-09-01 Getter containers and a method of manufacturing such containers
US728208A Expired - Lifetime US2907451A (en) 1952-09-27 1958-04-14 Getter container

Family Applications After (1)

Application Number Title Priority Date Filing Date
US728208A Expired - Lifetime US2907451A (en) 1952-09-27 1958-04-14 Getter container

Country Status (4)

Country Link
US (2) US2824640A (de)
DE (1) DE1079746B (de)
FR (2) FR1083925A (de)
GB (2) GB736475A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023883A (en) * 1959-03-05 1962-03-06 Philips Corp Getter holder
DK93858C (da) * 1959-03-05 1962-07-09 Philips Nv Getterholder.
US3211280A (en) * 1962-06-21 1965-10-12 Union Carbide Corp Getter assembly
US3428168A (en) * 1967-02-02 1969-02-18 Union Carbide Corp Getter construction
DE2516282A1 (de) * 1974-04-16 1975-11-06 Getters Spa Gettereinrichtung
US3979166A (en) * 1974-03-18 1976-09-07 S.A.E.S. Getters S.P.A. Getter device
US6077046A (en) * 1998-01-20 2000-06-20 Raytheon Company Getter assembly having porous metallic support and its use in a vacuum apparatus
US7308761B1 (en) * 2004-07-29 2007-12-18 Raytheon Company Method for preparing a getter structure and getter structure
WO2008099256A1 (en) 2007-02-16 2008-08-21 Saes Getters S.P.A. Air-stable alkali or alkaline-earth metal dispensers
CN111599661A (zh) * 2020-06-02 2020-08-28 中国科学院空天信息创新研究院 用于空间行波管的吸气剂固定结构

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1079746B (de) * 1952-09-27 1960-04-14 E S Societa Apparacchi Elettri Getterbehaelter
NL212519A (de) * 1956-11-27
US3195716A (en) * 1961-02-04 1965-07-20 Porta Paolo Della Mixed getter devices, with evaporated and not evaporated gettering material, for maintaining the vacuum in electronic tubes
US3225910A (en) * 1961-02-04 1965-12-28 Porta Paolo Della Getter devices with non-evaporated gettering material, for maintaining vacuum in electronic tubes
US3225911A (en) * 1961-04-08 1965-12-28 Porta Paolo Della Ring-shaped getter with top deflector, for improving and/or keeping up vacuum in electronic tubes
US3151736A (en) * 1961-06-22 1964-10-06 Porta Paolo Della Getter devices of the ring shaped kind
US3457448A (en) * 1966-07-22 1969-07-22 King Lab Inc Quick flash high yield getter with means to restrain warping and breaking of the getter material
IT1065291B (it) * 1976-12-06 1985-02-25 Getters Spa Dispositivo getter e metodo per il suo impiego
FR2717618B1 (fr) * 1994-03-15 1996-08-23 Thomson Tubes Electroniques Tube électronique à vide avec getter.
IT1303731B1 (it) * 1998-11-10 2001-02-23 Getters Spa Dispositivo getter evaporabile con ridotta perdita di particelle eprocesso per la sua produzione.
IT1312511B1 (it) 1999-06-24 2002-04-17 Getters Spa Dispositivi getter per l'evaporazione del calcio
ITMI20012273A1 (it) * 2001-10-29 2003-04-29 Getters Spa Leghe e dispositivi getter per l'evaporazione del calcio
ITMI20012408A1 (it) 2001-11-14 2003-05-14 Getters Spa Processo per l'evaporazione del calcio all'interno di sistemi che operano sotto vuoto
ITMI20030679A1 (it) * 2003-04-07 2004-10-08 Getters Spa Dispositivo getter evaporabile per tubi a proiezione

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1638551A (en) * 1924-07-30 1927-08-09 Western Electric Co Electron-discharge device
US2126686A (en) * 1936-02-11 1938-08-09 Kemet Lab Co Inc Production of high vacuum
US2258957A (en) * 1939-08-18 1941-10-14 Orenbach Samuel Lingerie slide buckle and loop and method of producing the same
US2311138A (en) * 1939-03-15 1943-02-16 Cleveland Graphite Bronze Co Conductor
US2515337A (en) * 1947-06-24 1950-07-18 Bell Telephone Labor Inc Metal to glass seal and method of producing same
DE859341C (de) * 1951-05-19 1952-12-15 Telefunken Gmbh Verfahren zur Herstellung von Getterkoerpern fuer Vakuumgefaesse und nach diesem Verfahren hergestellte Getterkoerper

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747648A (en) * 1927-04-04 1930-02-18 Ruben Patents Company Ionic-discharge device
DE707069C (de) * 1935-11-23 1941-06-12 Siemens & Halske Akt Ges Entladungsgefaess mit metallischer Wandung
FR818215A (fr) * 1936-02-24 1937-09-21 Philips Nv Tube à décharges électriques
DE706380C (de) * 1937-10-06 1941-05-24 Aeg Metallkolben fuer elektrische Entladungsgefaesse
BE485478A (de) * 1947-10-27
FR1018005A (fr) * 1949-03-24 1952-12-24 Gen Electric Co Ltd éléments de getters à dispersion et leurs procédés de fabrication
DE1079746B (de) * 1952-09-27 1960-04-14 E S Societa Apparacchi Elettri Getterbehaelter
DE939042C (de) * 1952-10-24 1956-02-16 Telefunken Gmbh Verdampfbarer Getterstoff fuer elektrische Entladungsgefaesse, der eine bestaendige Bariumlegierung und einen Zusatzstoff enthaelt

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1638551A (en) * 1924-07-30 1927-08-09 Western Electric Co Electron-discharge device
US2126686A (en) * 1936-02-11 1938-08-09 Kemet Lab Co Inc Production of high vacuum
US2311138A (en) * 1939-03-15 1943-02-16 Cleveland Graphite Bronze Co Conductor
US2258957A (en) * 1939-08-18 1941-10-14 Orenbach Samuel Lingerie slide buckle and loop and method of producing the same
US2515337A (en) * 1947-06-24 1950-07-18 Bell Telephone Labor Inc Metal to glass seal and method of producing same
DE859341C (de) * 1951-05-19 1952-12-15 Telefunken Gmbh Verfahren zur Herstellung von Getterkoerpern fuer Vakuumgefaesse und nach diesem Verfahren hergestellte Getterkoerper

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023883A (en) * 1959-03-05 1962-03-06 Philips Corp Getter holder
DK93858C (da) * 1959-03-05 1962-07-09 Philips Nv Getterholder.
US3211280A (en) * 1962-06-21 1965-10-12 Union Carbide Corp Getter assembly
US3428168A (en) * 1967-02-02 1969-02-18 Union Carbide Corp Getter construction
US3979166A (en) * 1974-03-18 1976-09-07 S.A.E.S. Getters S.P.A. Getter device
DE2516282A1 (de) * 1974-04-16 1975-11-06 Getters Spa Gettereinrichtung
US6077046A (en) * 1998-01-20 2000-06-20 Raytheon Company Getter assembly having porous metallic support and its use in a vacuum apparatus
US7308761B1 (en) * 2004-07-29 2007-12-18 Raytheon Company Method for preparing a getter structure and getter structure
WO2008099256A1 (en) 2007-02-16 2008-08-21 Saes Getters S.P.A. Air-stable alkali or alkaline-earth metal dispensers
US20100104450A1 (en) * 2007-02-16 2010-04-29 Saes Getters S.P.A. Air-stable alkali or alkaline-earth metal dispensers
US10109446B2 (en) 2007-02-16 2018-10-23 Saes Getters S.P.A. Air-stable alkali or alkaline-earth metal dispensers
CN111599661A (zh) * 2020-06-02 2020-08-28 中国科学院空天信息创新研究院 用于空间行波管的吸气剂固定结构
CN111599661B (zh) * 2020-06-02 2023-05-26 中国科学院空天信息创新研究院 用于空间行波管的吸气剂固定结构

Also Published As

Publication number Publication date
DE1079746B (de) 1960-04-14
GB736475A (en) 1955-09-07
FR74566E (fr) 1960-12-19
GB829338A (en) 1960-03-02
US2907451A (en) 1959-10-06
FR1083925A (fr) 1955-01-13

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