US2075355A - Discharge tube - Google Patents

Discharge tube Download PDF

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Publication number
US2075355A
US2075355A US493113A US49311330A US2075355A US 2075355 A US2075355 A US 2075355A US 493113 A US493113 A US 493113A US 49311330 A US49311330 A US 49311330A US 2075355 A US2075355 A US 2075355A
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US
United States
Prior art keywords
anode
cathode
discharge
discharge path
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
US493113A
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English (en)
Inventor
Mulder Johannes Gijsbe Wilhelm
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of US2075355A publication Critical patent/US2075355A/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
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0048—Tubes with a main cathode
    • H01J2893/0051—Anode assemblies; screens for influencing the discharge

Definitions

  • This may be eiiected by surrounding each anode by one or more discs having a central orifice through which the anode extends, these discs I barring the passage between the anode and the '45 which extend ring-discs which are mounted independently with regard to the anode.
  • This i embodiment may be extended still further -by providing the ring grooves in annular surfaces formed at narrowed portions oi the anodes,
  • the anode is given'an elongated 55 shape.
  • a portion of the wall of the discharge tube closely surrounds the anode along its whole length or along part thereof.
  • the wall of the discharge tube may have -60 an enlargedportion.
  • the anodes v may have one or more cavities at this end to enlarge the active surfaceof the anode.
  • the wall of the discharge tube is also to include the wall of lateral extensions or arms ofthe discharge tube which are provided forthe anodes in the case of high voltage tubes.
  • Fig. k1 ⁇ is avperspective schematic View of the lateral extension of a discharge tube towhich the invention is applied.
  • Fig. 2 is a sectional side View on slightly en.-
  • Fig. 3 is a sectional side view of a tube portion showing a stepped anode with a ring-disc.
  • Fig. 4 is a partly sectionized schematic view of a rectifying tube having anodes Aconstructed in accordance with the invention.
  • the wall of the tube is designated by 2.
  • the anode is assumed to be disposed in a lateral extension of the tube.
  • the anode is denoted by 3, and the leading-in .Wire by 4.
  • the latter is surrounded by a tube 5 which is made, for example, of steatite andv engages the anode at 6.
  • Figs. l and 2 three ring discs 8 are supported from the pinch 1 by means of supports 9, consisting, ⁇ for example. of glass.
  • the discs are made of mica or similar heat-resisting material.
  • discs 8 may have other shapes or may be otherwise supported.
  • 'I'he rectifying tube shown in Fig. 4 comprises an envelope having a central portion I5, from which extend two L shaped arms I6.
  • an incandescible cathode I1 whose leads 20 are sealed to the wall of the tube by means of two metal discs I9; for example, in a manner described in U. S. Patent No. 1,734,809.
  • Supported from one end of each of the arms I6 is an anode structure I8 made in accordance with ⁇ the invention, and having, for example, the construction shown in Figs. l and 2.
  • An electron discharge tube comprising an envelope having walls, a cathode and an anode, said anode having a large active surface opposing the cathode, the anode and cathode having a discharge path therebetween, a member contacting with said anode, there being -a long discharge path between the point of contact of the anode with the said member and the operating discharge path, and a member surrounding said anode, the said last-mentioned member comprising a disc of insulating material having a central aperture through which the anode passes and providing a slight clearance between the anode and the disc, said disc forming a partition in the space between the anode and the wall of the discharge tube.
  • An electron discharge tube comprising an envelope having walls, a cathode, and an anode having a large active surface opposing the cathode, said anode having a shoulder and an annular recess therein, the anode and the cathode having a discharge path therebetween, and a disc of insulating material surrounding said anode, said disc comprising a portion extending into said annular recess and in close but spaced relation thereto, said disc forming a partition in the space between the anode and the wall of the discharge tube.
  • An electron discharge tube comprising an envelope having an arm, a cathode, and an anode, said anode being placed in the said arm, the anode and cathode having a discharge path therebetween, a member lcontacting with said anode, there being a long discharge path between the point of contact of the anode with the said member and that portion of the anode which is active in the operating discharge, and a member in noncontacting spacial relationship with said anode and surrounding same with a clearance sumciently small to prevent the passage of a discharge from the operating discharge path to the point of contact between the anode and the contacting f member with a clearance sufficiently small to prevent the passage of a discharge from the operating discharge path to the point of contact between the anode and the contacting member.
  • An electron discharge t'ube comprising an envelope, a cathode, an anode having a large active surface opposing the cathode, the anode and cathode having a discharge path therebetween, a member contacting with said anode, there being a long discharge path between the point of contact of the anode with the said member and the operating discharge path and a plurality of disc members of insulating material having central apertures through which the anode passes in closed spaced relationship to said discs, and means supporting said discs, said supporting means being a considerable distance from said anode.
  • An electron discharge tube comprising an envelope, a cathode, an anode disposed in a cylindrical portion of said envelope to form an operating discharge path between said anode and cathode, said anode having a large active surface opposing the cathode, a member in contact with. the anode, there being a long discharge path between the operating discharge path and the point of contact of the anode with said member, and
  • An electron discharge tube comprising a cathode, an anode surrounded by a cylindrical portion of the wall of said tube and having a large active surface opposing the cathode to form an unobstructed discharge path therebetween, a member contacting with said anode, there being a long discharge path between the point of contact of the anode with said member and the active surface of the anode, and a member surrounding said anode and partly intercepting the space between said anode and said cylindrical portion to form a high-resistance section in kthe path between the active surface of the anode and the point of contact between the anode and said contacting member.
  • An electron discharge tube comprising a cathode, an anode having a large active surface opposing the cathode to form a discharge path therebetween, a member contacting with said anode, there being along discharge path between the point of contact of the anode with said member and that surface of the anode which is active in the operating discharge, and a member in non-contacting spatial relationship with said anode and extending substantially perpendicularly to the surface thereof, said latter member partly intercepting said long discharge path and surrounding said anode with a clearance sufficiently small to prevent the passage of a discharge from the operating discharge path to the point of contact between the anode and the contacting member.
  • An electron discharge tube comprising a cathode, an anode having a large active surface opposing the cathode, the anode and cathode having a discharge path therebetween, a member contacting with said anode, there being a long discharge path between the point of contact of the anode with said member and that surface of the anode which is active in the operating discharge, and a member of insulating material in non-contacting spatial relationship with said anode and surrounding same with a clearance suflciently small to prevent the passage of a discharge from the operating discharge path to the point of contact between the anode and the contacting member.
  • An electron discharge tube comprising an envelope having a cylindrical portion, a cathode, an anode axially disposed within said cylindrical portion and having a large active surface opposing the cathode, and a disc of insulating material closely surrounding said anode in non-contacting spatial relationship and disposed in a plane perpendicular to the .axis thereof, said disc substantially obturating the annular space between said anode and said cylindrical envelope portion.

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  • Electron Sources, Ion Sources (AREA)
  • Lasers (AREA)
US493113A 1930-01-18 1930-11-03 Discharge tube Expired - Lifetime US2075355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL364093X 1930-01-18

Publications (1)

Publication Number Publication Date
US2075355A true US2075355A (en) 1937-03-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US493113A Expired - Lifetime US2075355A (en) 1930-01-18 1930-11-03 Discharge tube

Country Status (4)

Country Link
US (1) US2075355A (fr)
DE (1) DE644783C (fr)
FR (1) FR707965A (fr)
GB (1) GB364093A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433813A (en) * 1945-08-23 1947-12-30 Sylvania Electric Prod Electric discharge tube
US3264511A (en) * 1963-06-20 1966-08-02 Westinghouse Electric Corp Glow discharge device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2958562B1 (fr) 2010-04-13 2012-12-28 Rocco Palazzolo Procede de realisation d'un revetement de surface multi-couches avec phase prealable de reparation
FR3005472B1 (fr) 2013-05-07 2016-04-29 Rocco Palazzolo Composition pour revetement de surface isolant, antibacterien et anti-moisissure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433813A (en) * 1945-08-23 1947-12-30 Sylvania Electric Prod Electric discharge tube
US3264511A (en) * 1963-06-20 1966-08-02 Westinghouse Electric Corp Glow discharge device

Also Published As

Publication number Publication date
DE644783C (de) 1937-05-13
FR707965A (fr) 1931-07-17
GB364093A (en) 1931-12-23

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