US2778966A - Support strap for electron gun assemblies - Google Patents

Support strap for electron gun assemblies Download PDF

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Publication number
US2778966A
US2778966A US491653A US49165355A US2778966A US 2778966 A US2778966 A US 2778966A US 491653 A US491653 A US 491653A US 49165355 A US49165355 A US 49165355A US 2778966 A US2778966 A US 2778966A
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US
United States
Prior art keywords
strap
portions
glass
controlling means
electron gun
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
US491653A
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English (en)
Inventor
Albert J Faustini
Robert T Mckenzie
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General Electric Co
Original Assignee
General Electric 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
Priority to NL205028D priority Critical patent/NL205028A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US491653A priority patent/US2778966A/en
Priority to GB6181/56A priority patent/GB822556A/en
Application granted granted Critical
Publication of US2778966A publication Critical patent/US2778966A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

  • This invention relates to cathode ray tubes, and more particularly, to support structures for electron gun assemblies of cathode raytubes;
  • cathode ray tube gm assemblies have been proposed that employ insulative support rods disposed in parallel, spaced relation to an aligned array of electrode elements.
  • the individual electrode elements of the gun have been separately connected to the support rods by means of strap members having a portion adapted to be afiixed to the supported electrode element and other portions that are adapted to be connected to the rods.
  • portions of the straps have been connected to the insulative rods by forming the ends of such portions to provide loops adapted tightly to receive the rods.
  • Another object is to provide support means for cathode ray gun assemblies wherein portions of said means are provided with recesses adapted to be completely filled with fiowable material to provide positive anchorage therefor.
  • a novel strap member for use in assembly of cathode ray tube guns, said member having portions formed with undercut recesses or cutouts adapted to receive the flow of molten insulative material when said portions are inserted under pressure therein, thereby to form, on cooling, a positive and rigid anchor for the strap.
  • Fig. 1 is an elevational view of a cathode ray tube gun structure embodying features of the present invention
  • Fig. 2 is a cross-sectional view taken along the line 2-2 of Fig. 1;
  • FIGs. 3 and 4 are fragmentary elevational views, partly in cross-section, of two modified embodiments of our invention.
  • FIG. 1 an electron gun is shown located in the neck 2,778,966 P termedllan. 22, 1957 portion 11 of a cathode ray tube envelope, said gun comprising the usual cathode and control grid electrode assembly 13, a number two or screen grid 15, an anode 17 and magnetic focusing means generally indicated at 19, each of which elements or assemblies may be of any suitable conventional design and for purposes well known to those skilled in the art.
  • Lead lines connecting the elements 13, l5and 17 to the closed end of the neck portion 11 are not shown inasmuch as the arrangements thereof and the mode of connection are also well known to those skilled in the art, and, per se, form no part of our invention.
  • Spacer clips 20 of anysuitable conventional type can be used to maintain the gun assembly in proper spaced relation to the wall of the neck portion 11, as is wellknown.
  • one or more insulative or glass rods or beads 19,21 are provided in parallel, spaced relation with respect to the electrode elements, and, as shown, the cathode and control-grid assembly 13, the screen grid 15, and anode 17 are connected to the glass beads 19, 21 by means of heading straps 23, 25, 27 and 29, respectively, which are constructed and arranged in accordance with a preferred embodiment of the present invention.
  • the beading straps 23, 25, 27 and 29 may be similarly constructed and may be formed generally, as shown more clearly in Fig. 2, of any suitable still material to provide a central semi-cylindrical body portion 31 from the diametrally-opposed end portions of which, radially extending arms 33, 35 maybe formed in any suitable manner as by bendingor stamping.
  • the arms 33, 35, as shown, are preferably disposed in substantially coplanar relation and have terminal portions that are formed to provide undercut shoulders or recesses as shown more clearly in Fig. 1 at 37 and 39.
  • the recesses 37, 39 are formed by punching or die-stamping the terminal portions of the arms to form, in plan, a substantially script-E-shaped opening therein defined by slightly hooked, bulbous tipped tines 40, 42 and a central cusp 44. If desired or required, a plurality of such intermediate cusps can be provided.
  • the body portion 31 of the strap ,23 is snugly fitted around and attached to the side wall of the cathode-assembly cylinder 13 by any suitable conventional means as by spot welding, and the terminal portions may be pressed into the glass rods while the latter are in molten state, thereby to permit the molten glassto flow into and completely fill the recessed portions '37 and 39.
  • the portions of the glass forced into the recessed portions become firmly bound to the strap to provide extremely rigid'anchoring of the beading strap in the glass rods.
  • the beading straps at 25, 27 and 29, as shown in Fig. l, are similarly formed in the manner described herein above in connection with strap 23.
  • FIG. 3 A modified form of heading strap is shown in Fig. 3 in which the cusp 44 of the strap of Figs. 1 and 2 has been omitted.
  • the undercut shoulder is provided by stamping or punching out a portion of the terminal of the strap to provide a substantially C-sliaped opening 46 formed by a pair of slightly curved bulbous tipped tines 48 and 50.
  • the terminal portion just described has been found to operate satisfactorily especially where the width of the strap and terminal portions are somewhat less than those of the strap shown and described in connection with Figs. 1 and 2.
  • FIG. 4 Another modification of our invention is shown in Fig. 4 in which a pair of undercut recess portions are provided as at 41 and 43 separated by a centrally disposed bulbous projection 45 formed with an arcuate leading edge 47.
  • Figs. 1, 3 and 4 the direction of flow of molten glass is indicated by arrows 51, illustrating the manner in which the molten glass completely fills the space provided by the undercut recessed portions, thereby to provide positive locking and rigid anchoring of the invention.
  • rods of other insulative materials can be similarly employed, such as quartz, mica, ceramic or the like, as the base for anchoring the electrode elements of the gun assembly.
  • cylindrical body portion 31 of the straps hereinabove described can be omitted, the leg portions 33, 35 then being connected directly to diametrally opposed parts of the associated electrode cylinder as by spot welding.
  • leg portions can be formed integrally with the associated electrode cylinder, as for example by striking out portions of the cylinder wall to form such leg portions.
  • Support strap means for a cathode ray tube electrode element comprising, a body portion adapted to be afiixed to said electrode element, and terminal portions adapted to be anchored in insulative members, said terminal portions being formed to provide recesses to receive, under pressure, flowable material of said members therewithin.
  • Support strap means for electron tube elements comprising a body portion adapted to be affixed to said elements, a terminal portion being formed to provide recesses into which flowable material can be forced.
  • an electron gun structure having a plurality of electron-beam controlling means adapted to be maintained in alignment by a plurality of glass rod members, strap means for each said controlling means having a body portion adapted to be affixed to the associated controlling means, and terminal portions adjacent said body portions for anchoring into said rod members, said terminal members being formed to define at least a pair of recesses to receive part of the glass of said rod members in the molten state therewithin.
  • An electron gun structure comprising a plurality of electron-beam controlling means, a plurality of glass rod members for supporting said controlling means in spaced alignment, strap means for each said controlling means having a portion adapted to be affixed to the associated controlling means, and other portions adjacent said first-mentioned portion for anchoring into said rod members, said terminal members being and formed to provide, in plan, substantially E-shaped cutouts to receive, under pressure, glass in the molten state therewithin.
  • An electron gun structure comprising a plurality of electron-beam controlling means, a plurality of glass rod members for supporting said controlling means in space alignment, strap means for each said controlling means having a portion adapted to be afiixed to the associated controlling means, and other portions adjacent said first-mentioned portion for anchoring into said rod members, said terminal members being and formed to provide, in plan, substantially C-shaped cutouts to receive, under pressure, glass in the molten state therewithin.
  • An electron gun structure comprising a plurality of electron-beam controlling means, a plurality of glass rod members for supporting said controlling means in space alignment, strap means for each said controlling means having a portion adapted to be aflixed to the associated controlling means, and other portions adjacent said first-mentioned portion for anchoring into said rod members, said terminal members being and formed to provide, in plan, means defining a pair of arcuate recesses spaced by a bulbous projection, said recesses being adapted to receive, under pressure, glass in the molten state therewithin.
  • An electron gun structure comprising a plurality of electron-beam controlling means, a plurality of glass rod members for supporting said controlling means in space alignment, strap means for each said controlling means having a portion adapted to be affixed to the associated controlling means, and other portions adjacent said first-mentioned portion for anchoring into said rod members, said terminal members being and formed to provide, in plan, means defining a pair of arcuate recesses spaced by a bulbous projection, said recesses being adapted to receive, under pressure, glass in the molten state therewithin said projection having an arcuate leading edge.
  • An electron gun structure comprising a plurality of electron-beam controlling means adapted to be supported in spaced alignment by an insulative member, means on said controlling means for anchoring the latter into said rod members, said anchoring means comprising a pair of bulbous-tipped projections disposed to define a recess to receive glass in the molten state therewithin.
  • strap means having a body portion adapted to be affixed to individual ones of said controlling means and terminal portions adjacent said body portions for anchoring into said rod members, said terminal members being formed to receive glass in the molten state therewithin.
  • Support strap means for electron tube elements comprising a body portion adapted to be aflixed to said elements, a terminal portion being formed to provide a recess into which flowable material can be forced.

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
US491653A 1955-03-02 1955-03-02 Support strap for electron gun assemblies Expired - Lifetime US2778966A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL205028D NL205028A (en:Method) 1955-03-02
US491653A US2778966A (en) 1955-03-02 1955-03-02 Support strap for electron gun assemblies
GB6181/56A GB822556A (en) 1955-03-02 1956-02-28 Improvements relating to electron gun assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US491653A US2778966A (en) 1955-03-02 1955-03-02 Support strap for electron gun assemblies

Publications (1)

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US2778966A true US2778966A (en) 1957-01-22

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US491653A Expired - Lifetime US2778966A (en) 1955-03-02 1955-03-02 Support strap for electron gun assemblies

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US (1) US2778966A (en:Method)
GB (1) GB822556A (en:Method)
NL (1) NL205028A (en:Method)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878623A (en) * 1956-09-14 1959-03-24 Owens Illinois Glass Co Method of attaching metal brackets to glass
US2950568A (en) * 1956-10-11 1960-08-30 Rca Corp Glass beading mechanism for electron guns
US3009292A (en) * 1955-09-01 1961-11-21 Thomas Electronics Inc Focusing header assembly machine
US3017531A (en) * 1959-12-16 1962-01-16 Gen Electric Electron gun electrode supports
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
US3254251A (en) * 1962-07-06 1966-05-31 Rca Corp Cathode ray tube gun having nested electrode assembly
US3389284A (en) * 1966-03-21 1968-06-18 Admiral Corp Electron gun structure having supporting tabs therefor
US3622831A (en) * 1970-01-28 1971-11-23 Kentucky Electronics Inc Crt electrode claw structure embedded in mounting beads
FR2527006A1 (fr) * 1982-05-14 1983-11-18 Rca Corp Perfectionnements apportes aux systemes de canons electroniques pour tubes a rayons cathodiques
EP0295732A1 (en) * 1987-05-21 1988-12-21 Koninklijke Philips Electronics N.V. Method of manufacturing an electron gun

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2484004A (en) * 1945-11-14 1949-10-04 Reeves Hoffman Corp Crystal holder
US2562752A (en) * 1944-08-21 1951-07-31 Adlake Co Means for mounting cups in mercury switches
US2573287A (en) * 1950-06-23 1951-10-30 Rauland Corp Electron gun for cathode-ray tubes
US2596508A (en) * 1950-04-19 1952-05-13 Rauland Corp Electron gun for cathode-ray tubes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562752A (en) * 1944-08-21 1951-07-31 Adlake Co Means for mounting cups in mercury switches
US2484004A (en) * 1945-11-14 1949-10-04 Reeves Hoffman Corp Crystal holder
US2596508A (en) * 1950-04-19 1952-05-13 Rauland Corp Electron gun for cathode-ray tubes
US2573287A (en) * 1950-06-23 1951-10-30 Rauland Corp Electron gun for cathode-ray tubes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009292A (en) * 1955-09-01 1961-11-21 Thomas Electronics Inc Focusing header assembly machine
US2878623A (en) * 1956-09-14 1959-03-24 Owens Illinois Glass Co Method of attaching metal brackets to glass
US2950568A (en) * 1956-10-11 1960-08-30 Rca Corp Glass beading mechanism for electron guns
US3018400A (en) * 1959-08-24 1962-01-23 Thomas Electronics Inc Cathode ray tube
US3017531A (en) * 1959-12-16 1962-01-16 Gen Electric Electron gun electrode supports
US3134923A (en) * 1960-08-22 1964-05-26 Rca Corp Plural parallel electron-guns
US3254251A (en) * 1962-07-06 1966-05-31 Rca Corp Cathode ray tube gun having nested electrode assembly
US3389284A (en) * 1966-03-21 1968-06-18 Admiral Corp Electron gun structure having supporting tabs therefor
US3622831A (en) * 1970-01-28 1971-11-23 Kentucky Electronics Inc Crt electrode claw structure embedded in mounting beads
FR2527006A1 (fr) * 1982-05-14 1983-11-18 Rca Corp Perfectionnements apportes aux systemes de canons electroniques pour tubes a rayons cathodiques
EP0295732A1 (en) * 1987-05-21 1988-12-21 Koninklijke Philips Electronics N.V. Method of manufacturing an electron gun

Also Published As

Publication number Publication date
GB822556A (en) 1959-10-28
NL205028A (en:Method)

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