US3239708A - Laterally spaced electrode mounts for electron guns - Google Patents

Laterally spaced electrode mounts for electron guns Download PDF

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Publication number
US3239708A
US3239708A US423430A US42343065A US3239708A US 3239708 A US3239708 A US 3239708A US 423430 A US423430 A US 423430A US 42343065 A US42343065 A US 42343065A US 3239708 A US3239708 A US 3239708A
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US
United States
Prior art keywords
electron
electrodes
rods
spaced
laterally spaced
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
US423430A
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English (en)
Inventor
Jay H Johnson
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.)
KENTUCKY ELECTRICS Inc
Original Assignee
KENTUCKY ELECTRICS Inc
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 KENTUCKY ELECTRICS Inc filed Critical KENTUCKY ELECTRICS Inc
Priority to US423430A priority Critical patent/US3239708A/en
Priority to GB48881/65A priority patent/GB1063147A/en
Priority to DE19651514102 priority patent/DE1514102A1/de
Priority to NL6517030A priority patent/NL6517030A/xx
Priority to FR44779A priority patent/FR1462795A/fr
Application granted granted Critical
Publication of US3239708A publication Critical patent/US3239708A/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
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements

Definitions

  • Another object of this invention is to provide electron gun assemblies which may be made smaller and shorter than with conventional techniques.
  • the various electron gun parts are mounted between and afiixed to two longitudinal glass rods.
  • Such parts were held by a single strap; or when more firmness was required, dual straps were mounted with vertical spacing along the rods.
  • This sort of mounting technique permitted slight misalignment of the parts relative to the axis of the beam as caused by relative bending and displacement of parts under the stress of thermal expansion or vibration. Such variations are not tolerable when smaller guns are formed and closer tolerances are required.
  • FIGURE 1 is a side view, partly in section, of an electron gun assembly
  • FIGURE 2 is a top view, in section, taken along lines II-II of FIGURE 1.
  • cathode 3 mounted in ceramic 3,239,708 Patented Mar. 8, 1966 'ice disc 4 and held within grid cup 5 with other electrodes 6, etc, mounted axially along the path 7 of the electron beam is shown in FIGURE 1.
  • the cathode 3 is conventionally mounted within grid cup 5, but this grid cup and all other beam forming electrodes 6, etc., are mounted onto glass rods 8 and 9 by straps 10 shaped as shown in FIGURE 2.
  • the straps 10, 10' etc. are so constructed on all the beam forming electrodes in accordance with the concepts of this invention.
  • the glass rods 8 and 9 are constructed thinner and wider than conventional rods to receive the spaced prongs or arms 11 and 12 of the strap 10 extending from the outer surface of electrode 14 in a span spaced transversely in a plane perpendicular to the beam axis as shown in FIGURE 2.
  • the strap is welded to electrode 14 at its inner extremity over a curvature following the contour of the electrode, and has its prongs 11 and 12 embedded in glass rod 9.
  • the salient features of this invention reside in a strap mounted on a beam forming electrode such as a grid or focus anode and having two laterally positioned prongs for insertion into a single glass rod located parallel to the beam.
  • a beam forming electrode such as a grid or focus anode and having two laterally positioned prongs for insertion into a single glass rod located parallel to the beam.
  • an electron gun assembly with a series of apertured beam forming electrodes mounted to define at least one electron path disposed between at least two insulating mounting rods
  • the improvement comprising, widened rods, and mounts afiixed to said apertured electrodes at a plurality of positions each with two spaced arms extending from two positions on the surface of the electrodes in a plane substantially perpendicular to the electron beam path with said two arms embedded in each of the widened rods at two spaced positions transversely of said electron path in said plane in each rod.
  • mounts are U-shaped strap members spaced on opposite sides of said electrodes to extend into the rods.
  • Electrodes are cup shaped and the strap members comprise an innermost portion having a surface with curvature following the cup shaped curvature of the electrodes affixed thereto at this surface.

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
US423430A 1965-01-05 1965-01-05 Laterally spaced electrode mounts for electron guns Expired - Lifetime US3239708A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US423430A US3239708A (en) 1965-01-05 1965-01-05 Laterally spaced electrode mounts for electron guns
GB48881/65A GB1063147A (en) 1965-01-05 1965-11-17 Electron gun mounting structure
DE19651514102 DE1514102A1 (de) 1965-01-05 1965-12-08 Elektronenstrahlerzeuger
NL6517030A NL6517030A (fr) 1965-01-05 1965-12-28
FR44779A FR1462795A (fr) 1965-01-05 1966-01-04 Perfectionnements aux canons à électrons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US423430A US3239708A (en) 1965-01-05 1965-01-05 Laterally spaced electrode mounts for electron guns

Publications (1)

Publication Number Publication Date
US3239708A true US3239708A (en) 1966-03-08

Family

ID=23678888

Family Applications (1)

Application Number Title Priority Date Filing Date
US423430A Expired - Lifetime US3239708A (en) 1965-01-05 1965-01-05 Laterally spaced electrode mounts for electron guns

Country Status (5)

Country Link
US (1) US3239708A (fr)
DE (1) DE1514102A1 (fr)
FR (1) FR1462795A (fr)
GB (1) GB1063147A (fr)
NL (1) NL6517030A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543071A (en) * 1968-10-14 1970-11-24 Kentucky Electronics Inc Electrode with wing-shaped brackes for cathode ray tubes
US3594601A (en) * 1970-01-28 1971-07-20 Kentucky Electronics Corp Holder and mounting means for ceramic crt cathode ring
US3777210A (en) * 1972-10-30 1973-12-04 Rca Corp Electron gun and method of assembly
US4061942A (en) * 1975-12-17 1977-12-06 International Standard Electric Corporation In line gun support arrangement with expansion compensation
US4618800A (en) * 1983-02-17 1986-10-21 Rank Electronic Tubes, Inc. Precision electrode alignment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808527A (en) * 1955-11-22 1957-10-01 Gen Electric Cathode support strap
US2897391A (en) * 1957-04-02 1959-07-28 George B Erskine Studded electrode and method of manufacture
US2909689A (en) * 1955-09-12 1959-10-20 Gen Electric Support strap for electron gun structures
US3018400A (en) * 1959-08-24 1962-01-23 Thomas Electronics Inc Cathode ray tube
US3085172A (en) * 1959-03-11 1963-04-09 Corning Glass Works Cathode ray tube gun assembly
US3134923A (en) * 1960-08-22 1964-05-26 Rca Corp Plural parallel electron-guns

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909689A (en) * 1955-09-12 1959-10-20 Gen Electric Support strap for electron gun structures
US2808527A (en) * 1955-11-22 1957-10-01 Gen Electric Cathode support strap
US2897391A (en) * 1957-04-02 1959-07-28 George B Erskine Studded electrode and method of manufacture
US3085172A (en) * 1959-03-11 1963-04-09 Corning Glass Works Cathode ray tube gun assembly
US3018400A (en) * 1959-08-24 1962-01-23 Thomas Electronics Inc Cathode ray tube
US3134923A (en) * 1960-08-22 1964-05-26 Rca Corp Plural parallel electron-guns

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543071A (en) * 1968-10-14 1970-11-24 Kentucky Electronics Inc Electrode with wing-shaped brackes for cathode ray tubes
US3594601A (en) * 1970-01-28 1971-07-20 Kentucky Electronics Corp Holder and mounting means for ceramic crt cathode ring
US3777210A (en) * 1972-10-30 1973-12-04 Rca Corp Electron gun and method of assembly
US4061942A (en) * 1975-12-17 1977-12-06 International Standard Electric Corporation In line gun support arrangement with expansion compensation
US4618800A (en) * 1983-02-17 1986-10-21 Rank Electronic Tubes, Inc. Precision electrode alignment

Also Published As

Publication number Publication date
DE1514102A1 (de) 1969-05-22
NL6517030A (fr) 1966-07-06
GB1063147A (en) 1967-03-30
FR1462795A (fr) 1966-12-16

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