Abstract: An image display apparatus includes an electron beam generating source for generating the electrons which travel in parallel with each other and an extraction electrode for extracting the electron beams from the generated electrons. A control electrode is also included for selectively controlling a second quantity of electrons in the electron beams which have passed through the extraction electrode and a horizontal deflection electrode for electrostatically deflecting the electron beams. A vertical deflection electrode is provided for deflecting the electron beams which have passed through the horizontal deflection electrode. The vertical deflection electrode has a first comb-shaped conductive sheet having first parallel members and a second comb-shaped conductive sheet having second parallel members. The first members and the second members are alternatively formed adjacent to each in the horizontal direction.

Abstract: In a cathode ray tube (CRT) having a glass envelope with a neck portion, a funnel portion and a display screen, or front panel, an electron gun disposed in the CRT's neck portion has a plurality of aligned electrodes, including a charged shield cup. The shield cup includes a plurality of contact springs disposed about the outer periphery thereof and engaging a conductive layer on the inner surface of the CRT's neck portion for supporting the electron gun and charging the shield cup to an electron accelerating, or anode, voltage. Also disposed on the outer periphery of the shield cup and engaging the inner conductive layer is a getter support member.

Abstract: An electrode for electro gun of a cathode ray tube includes an external electrode member formed on the top of a cup-shaped body and having a large-diameter electron beam passing hole through which three electron beams pass commonly, and an internal electrode member inserted into the external electrode member and having three separate electron beam passing holes on the top of the internal electrode, wherein protrusions are formed on the outer surface of the internal electrode member, thereby enhancing the assembly precision of the external and internal electrode members.

Abstract: An electron tube includes a cathode structure which has a hollow cylindrical sleeve having a heater mounted within the sleeve. There is a cathode cap disposed at the top of the sleeve to contain an electron emission material. A hollow cylindrical cathode holder is used for supporting the sleeve. A unitary support interconnects the sleeve and the holder and has formed in its outer peripheral wall a plurality of circumferentially spaced through holes for preventing deformation of the support.

Abstract: Disclosed is a cathode assembly of an electron gun for a color cathode ray tube in which a heater support structure is improved. The cathode assembly of an electron gun for a color cathode ray tube comprising three cylindrical sleeves which are arranged in an in-line type, a base metal which is located at the upper end of the sleeves, and of which the surfaces are coated with thermal electron emitting material, a heater which is located on the inner portion of each of the sleeves and having two parallel terminals which are exposed out of the sleeves, and a heater fixture block in which three pairs of welding terminals corresponding to the three heaters and two signal lines for forming an electrical circuit along with the welding terminals are provided in the lateral surface and two parallel bead glasses for supporting the sleeves and the block. The heater support structure is simple and the stability thereof is improved. Also, the heater is easily assembled to have a high productivity.

Abstract: A cathode structure for a cathode-ray tube includes a cathode cap coated with an electron-emissive substance for emitting electrons when heated, a cylindrical cathode sleeve attached to the bottom of the cathode cap, a heater inserted in the cathode sleeve for heating the cathode cap, a cathode sleeve holder for holding the cathode sleeve , cylindrical member for fixing the lower end of the cathode sleeve preventing electric field concentration, and a plurality of connecting arms extending from the means for connecting with the cathode sleeve holder.

Abstract: There is disclosed a display apparatus including a rear electrode unit, electron beam generating sources, a front electrode unit including a plurality of electron beam control electrodes laminated together with insulating spacers therebetween, and a face plate formed with a fluorescent screen. The front electrode is coupled together by first metallic coupling pins fixed on the electron beam control electrode arranged to confront the fluorescent screen. The rear electrode unit is coupled with the electrode unit by second metallic coupling pins fixed to one of the electron beam control electrodes other than the electron beam control electrode confronting the fluorescent screen.

Abstract: A method of manufacturing an electron gun component, in which the electrodes are positioned in a jig by means of positioning means which are located at the edge of the electrodes. The method does not use pins to position the electrodes. In an exemplary embodiment, the electrodes are stacked in the jig with clearance. The positioning means are located at the vertices of a polygon which comprise the apertures in the electrodes. If an electrode is tubular in shape, the positioning means and the apertures in the electrode are preferably located in one plane.

Abstract: The present invention relates to a cathode support structure of an electron gun for a cathode ray tube for improving the electron beam emission characteristics by way of ensuring the support operation of the cathode, whereby upgrading the white balance holding characteristics and preventing the degradation of carbonate. A cathode support structure of an electron gun for a cathode ray tube which is designed to support the cathode support member 2, 2' or 2" using the support strip 3, 3' or 3" between the bead glasses 1 where the support strip 3, 3' or 3" has semicircular curved surface 3a, 3a' or 3a" which encompassing the cylindrical cathode support meber 2, 2' or 2" for secure fixation and having a pair of integral reinforcement strips 4, 4' or 4".

Abstract: A planar display apparatus with a fluorescent screen formed on the inner surface of a front panel in a planar tube body. An electron gun is disposed at a position deviated in a vertical scanning direction from a region opposite the fluorescent screen, and a vertical deflecting electrode composed of a plurality of parallel electrodes is disposed at an opposite portion relative to the fluorescent screen on the side of a back panel opposed to the front panel of the planar tube body. In a space between the vertical deflecting electrode and the fluorescent screen, there is disposed an electrode structure having at least an electron lens scanning electrode composed of a plurality of parallel electrodes, a splitting electrode for splitting an electron beam from the electron gun into a plurality of beams, a modulating electrode, and horizontal deflection electrodes.

Abstract: An electron gun supporting member for securing and supporting an electron gun within a cathode ray tube, such as a Braun tube of a television receiver, is disclosed. The electron gun supporting member is comprised of a shield section, electron gun supporting sections and connecting sections. The function of the electron gun supporting sections is to secure and support the electron gun with respect to the cathode ray tube, while that of the connecting sections is to establish electrical connection between the last electrode of the electron gun and an electrically conductive layer formed on the inner wall of the cathode ray tube. The electron gun supporting sections and the connecting sections are bent obliquely outwards in a direction opposite to the direction of insertion of the electron gun into the cathode ray tube.

Abstract: An arc suppressing device for a cathode ray tube having an evacuated glass envelope which includes a funnel with a neck and a panel provided with a shadow mask. An electron gun is housed in the neck and includes a cathode and a plurality of electrodes supported by supporting beads. On the outer surface of the focusing electrode, at least one or more projecting metallic pieces pass through the supporting beads so that the ends thereof are exposed to the outside of the supporting bead. Between the ends of the projecting pieces and the inner surface of the neck, an electric field is formed to effectively prevent the occurrence of arcing in the bead channels.

Abstract: A direct heating cathode structure for a miniature cathode ray tube is disclosed wherein angular rod-shaped supports where the coiled heater is welded are bent so that one edge thereof is directed upward, and opposing delta welding portions are formed by chamfering the top edge of the bent front part of the supports, thereby allowing simple ascertainment of the proper welding location and rapid precision welding of the coiled heater.

Abstract: The present invention provides an electron beam gun for an electron beam evaporation source in which a beam former shields a filament from an anode such that electrons emitted from the filament are accelerated past the anode in a ribbon-like beam. The filament is connected to a split cathode block having two sides for applying an electric current through the filament. The beam former has two sections which are separately connected to the two sides of the cathode block such that the cathode block acts as a heat sink for the beam former, and a thermal gradient is not produced within the beam former that would produce warpage and movement of the beam former. Preferably, the vertical gap is about 0.254 mm. to prevent electrons emitted from the filament from arcing through the gap to the anode.

Abstract: In an electron tube having a glass envelope portion (1) is an electrode system (3) which is slid in the envelope portion (1) and is centered with respect to the wall (7) of the envelope portion (1) by means of a number of pretensioned springs (6). The springs (6) each extend from a supporting point B, which is fixed with respect to the electrode system (3), over their effective spring length toward the wall (7) of the envelope portion (1) and press against the wall (7) at a contact point A. A stick-slip movement of the springs over the surface of the wall (7) during the sliding movement of the electrode system (3) is avoided because the springs (6) each extend over their effective spring length along a straight line between supporting point B and contact point A. Flowing of the springs and the resulting occurrence of glass damage to the wall (7) is minimized by this spring configuration.

Abstract: The invention is directed to a high-voltage lead-through arrangement for introducing a high voltage into an enclosure wherein a vacuum is maintained such as for particle-beam apparatus. The arrangement includes: a high-voltage electrode for carrying a high potential; an insulator enclosing the high-voltage electrode and having a surface defining a boundary with the vacuum; and, an outer low-voltage electrode surrounding the insulator for carrying a low potential. The electrodes are spaced from each other by an electrode spacing measured along the surface of the insulator. The high-voltage electrode and the insulator conjointly define a first region wherein the high potential is present to a good approximation; and the first region is bounded by the insulator surface for a first distance of up to approximately 1/10 of the electrode spacing.

Abstract: A cathode structure for an electron gun of a cathode ray tube contains supporting pieces for preventing the detachment of an insulating block that are buried into insertion grooves made in the insulating block. These supporting pieces contact and are welded to the inside of the skirt of the control grid after they are inserted into the control grid together with the insulating block. This provides high stability against external impacts.

Abstract: An integrated grid (G1/G2) assembly having enhanced mechanical strength and rigidity is provided for use in an electron gun assembly of a cathode ray tube (CRT). In the integrated grid assembly, the first and second grids (35 and 40, respectively) are fixed in relationship to one another, both axially and radially, by means of an insulating element (50) and a collar element (55). Brazed joints are preferably provided at the interface of the insulating element (50) with the second grid (40) and the collar element (55) to enhance the mechanical strength and rigidity of the assembly. An integrated grid (G1/G2)/anode assembly may be provided by mounting anode assembly (45) fixedly with respect to second grid (40) by means of second insulating element (60) and second collar element (65). Methods for assembling the integrated grid assemblies are also disclosed.

Abstract: An electron gun heater supporting structure includes a pair of supporting pieces respectively mounted on separate opposed glass beads of an electron gun and U-shaped connecting pieces disposed between the pair of supporting pieces for welding terminals of a heater thereto, the connecting pieces including position determining elements for determining the positions of the connecting pieces relative to the supporting pieces for welding them together. According to the present invention, the welding positions can be exactly determined and the uniformity of heater positions can be realized.

Abstract: A direct heating cathode includes an emitter for emitting electrons and a generally W shaped heater connected at opposite ends to terminals having a flat portion on which the emitter is mounted, bent portions at opposite sides of the flat portion, and an upwardly projected shoulder portion in the vicinity of each of the ends of the heater. Each of the bent portions of the heater includes two oppositely directed bends between the flat portion and the proximate heater end. The cathode structure elevates the temperature of the cathode at the position of the emitter, reducing power consumption and improving start-up speed, operational stability, and life expectancy.

Abstract: The disclosure concerns electron tubes. A tube such as a cathode-ray tube consists of several parts, namely the stem, the neck, the cone and the screen of the front face. To build a tube such as this more compactly while, at the same time, improving the quality of the fabrication, a new construction of the neck is proposed. In the prior art, the neck is a glass tube to which there is soldered a glass stem through which pass the connection terminals towards the various electrodes, internal to the tube. Here, the neck is built in the form of a stack of alternating metallic rings and ceramic rings. The metallic rings are used for the supporting of and electrical connection to the internal electrodes. The ceramic rings are used to insulate the metallic rings. The brazings between metallic rings and ceramic rings provide for vacuum tightness. The base of the tube is a ceramic washer without drillings other than lateral ones for the connections to pass through.

Abstract: The present invention relates to an electron gun retaining a cathode and a plurality of electrodes with a pair of bead glasses and a method for manufacturing the same, wherein each of the bead glasses are provided with a convex portion at a position where a bead support for an electrode is buried on a side of the electrodes, each of bead bases of a beading apparatus on which the bead glasses are disposed is formed with a concave portion at a position corresponding to the convex portion of the bead glass, the bead glasses disposed on the bead bases are heated and softened, the bead supports for the cathode and the plurality of electrodes are buried and secured in the bead glasses, and the bead glasses each include convex portions on a side opposite to the electrodes.

Abstract: A fixed construction for plate electrodes in a flat display unit, wherein holes provided along a common axis through a plurality of plate electrodes have a diameter smaller than that of a tapered insulating pin to be inserted therein, and the peripheral portions of the holes are formed in a thin or tapered construction, thereby supporting and fixing the plate electrodes in position without interposing a spacer and without causing deformation to the areas around the peripheries of the holes formed in the plate electrodes when insulating pins are fitted.

Abstract: The present invention provides an improved cathode-ray tube. The neck of the tube envelope is closed at one end by a stem that includes a plurality of electrically conductive pins extending therethrough. The pins are interconnected to various electrodes of the gun by electrical leads that are welded to respective pins. The improvement comprises at least one of the leads having a bend therein that positions a nonwelded portion of the lead between a lead-to-pin weld location and the neck of the tube.

Abstract: The invention relates to an electron gun comprising a cathode-unit composed of a cathode shaft (53) which is surrounded by a heat reflection screen (56). A connection piece (55) is secured to the head end of the cathode shaft (53). A holder (59) containing electron-emitting material (60) is located on the connection piece (55). The cathode shaft (53) is suspended in the heat reflection screen (56) by means of suspension wires (57), each wire being secured to the heat reflection screen with one end which is at least close to the head end of the heat reflection screen (56), and the other end (58) being located between the connection piece (55) and the holder (59).

Abstract: This invention relates to a video display device in which the image area of the screen is divided into multiple sectors in the vertical direction and an electron beam is vertically deflected at each of these sectors to display multiple image lines, and particularly to a construction of cathode wires suspended horizontally in order to generate an electron beam at each sector. In this invention, distance between the wire cathodes and back electrode and also between the wire cathodes and the control electrode are held constant by providing insulated members under the wire cathodes.

Abstract: At least one of grid electrodes which serves as a main lens of an electron gun for use in a color cathode ray tube is divided into a plurality of cylindrical electrodes coaxially connected. An inner electrode is provided at the connection part between the cylindrical electrodes so that the center of an elliptical aperture of the inner electrode coincides with the center of an inner wall of the grid electrode. Thus, astigmatism in the main lens is removed, thereby improving the resolution of the color cathode ray tube.

Abstract: An electron gun for a cathode-ray tube has a structure in which the longitudinal middle portion of a focusing electrode is enlarged in diameter and an accelerating electrode is disposed in the enlarged-diameter portion of the focusing electrode. The opposite end portions of the focusing electrode are reduced in diameter, and the reduced-diameter portions of the focusing electrode and the accelerating electrode are secured to each other by means of electrode supporting rods.

Abstract: Cathode ray tube having an electron gun which comprises a beam-shaping part and a focusing structure, which structure comprises a hollow tube with a helical electrically conducting glass-enamel layer on the inner surface. Together with the hollow tube, the components of the beam-shaping part are secured to axial mounting rods via metal supporting elements. The tube has a first and a second end face each of which is fixedly connected in one embodiment to a metal plate having a coaxial opening provided with a flange, which flange projects into the tube and is fused in an electrically conducting manner to the electrically conducting glass-enamel layer of the focusing structure.

Abstract: An electron gun assembly includes a plurality of cathode assemblies and a plurality of spaced successive electrodes mounted on at least two electrically insulative support rods. At least one of the electrodes comprises a deep-drawn substantially rectangular cup-shaped member having a base portion, a supporting flange portion, including a plurality of attachment tabs, and a sidewall extending therebetween. The sidewall includes a plurality of coined welding areas that provide a substantially flat welding surface having structural rigidity for securing studs thereto to facilitate attachment of the electrode to the support rods.

Abstract: Cathode ray tube having an electron gun positioned in the neck portion, the gun comprising a beam-forming part and a focusing structure and the beam-forming part comprising at least a cathode and a metal electrode plate provided with a central aperture, and the focusing structure comprising a hollow tube of an electrically insulating material with inner and outer surfaces and with a layer of high-ohmic resistive material on at least one of the surfaces. The electrodes of the beam-forming part of the electron gun are secured via metal pins to rods for forming an assembly. The hollow tube is directly secured to the metal electrode plate for the purpose of correct alignment. The tube has a first and a second end face, the first end face in one embodiment having a metal plate with a coaxial aperture, and the said metal plate is fixedly connected to the metal electrode plate of the beam-shaping part of the electron gun in such a way that their apertures are coaxial.

Abstract: In an electron tube sealing structure, a cylindrical insulator is metallized to produce metallized layers on both end surfaces, and sealing metal members are soldered to the metallized layers correspondingly, so that a vacuum chamber is provided in the interior of the cylindrical insulator. The cylindrical insulator is provided with at least one salient portion at an inner end thereof. The salient portion is parallel to a direction of an electric field produced by a voltage applied across the sealing metal members, and shields one of the metallized layers which is positioned on the side of a negative electrode in regard to the vacuum chamber, so that the emission of electrons is avoided from the corresponding metallized layer to prevent a creeping discharge from being induced on the inner surface of the cylindrical insulator.

Abstract: The present invention provides an improved electron gun in a color picture tube. Such electron gun includes a beam-forming region comprising cathodes and at least two electrodes and a main focus lens formed by two electrodes. The cathodes and all of the electrodes are interconnected to a plurality of insulative support rods. The improvement comprises forming a first focus lens electrode, nearest the beam-forming region, of two separated portions that are electrically connected. The portion of the first focus lens electrode that is nearest the other focus lens electrode only is interconnected to the support rods near the main focus lens. The portion of the first focus lens electrode that is nearest the beam-forming region is connected to the support rods immediately adjacent to a beam-forming electrode.

Abstract: An electron beam device such as a cathode ray tube having an electron gun (15) comprising a profiled tubular body (22) of a vitreous material. At least some of the electrodes (30, 32, 34, 36) of the electron gun comprising cup-shaped drawn metal members which are push fitted against respective engaging surfaces formed in the tubular body (22). Electrical connections to one or more of these cup-shaped members are point contacts made with lead-out wires (38, 40) held captive in the wall of the tubular body (22). In order to ensure a good point contact, at least the area of the wall in the vicinity of the terminal portion of the or each lead-out wire is flat. In consequence thereof a skirted portion of the or each cup-shaped electrode is flattened slightly against the surface of the wall.

Abstract: The invention relates to a method of manufacturing an electron gun for use in a cathode ray tube. The electrodes of the gun have plate-shaped fastening members (19) which at the free end partly surround an aperture (45). One step of the method is the bonding to each other of the electrodes and the supports (21, 22) by softening the supports and making the fastening members penetrate the supports. The protruding part (44) of the fastening member is at an angle with the direction of penetration, such that a constrained material flow through the aperture (45) develops. Thus, the fastening members (19) cool down and are clamped along various lines (46, 47, 48), which leads to an improved microphonic behaviour.

Abstract: A color picture tube having an in-line electron gun and using a high frequency magnetic field for the horizontal deflection of three electron beams is disclosed in which a conductive skirt member is bonded to a portion of the side wall of a shielding electrode to reduce the resistance of the portion so that three electron beams are equally affected by a magnetic field induced by an eddy current in the side wall of the shielding electrode, and further a leg portion is extended from the skirt member to keep the tip of the leg portion in electrical contact with the inner surface of an electron tube and to support the electron gun by the leg portion.

Abstract: An electron gun assembly for use in a CRT includes a pair of insulating support rods, at least one indirectly heated cathode disposed between the support rods, a heater for the cathode and an improved heater tab. The heater includes a pair of heater legs which are attached to the heater tab. Heater bead straps are provided for attaching the heater tab to the support rods. The electron gun also includes a plurality of electrodes for focusing and accelerating an electron beam generated by the cathode. The improved heater tab comprises a main body portion including a first and a second part. Each of the parts is attached to one of the heater legs. The heater tab has a pair of outwardly directed feet each of which is connected to one of the parts of the main body portion by a pair of substantially orthogonal legs extending therebetween.

Abstract: A resistor assembly built into an electron tube, comprising a resistor element having at least one hole, an inner connector fitted in the hole, and an outer connector which formed integrally with the inner connector, or fixed thereto. The inner connector is electrically connected to the resistor element. The outer connector is secured and electrically connected to a part in the electron tube, whereby the resistor element is electrically connected to said part.

Abstract: A novel electron gun for a cathode-ray tube includes at least one and preferably three cathode assemblies and at least four successive electrodes longitudinally spaced from the cathode assemblies. Each of the electrodes has at least one and preferably three electron beam apertures therethrough. The cathode assemblies and two of the electrodes are attached to a ceramic support member which is the sole supporting interconnection therebetween. A third electrode of the four successive electrodes has a distal electrode member and a proximal electrode member. The proximal member also is attached to the ceramic support member to form a first gun module. A second gun module includes a fourth electrode of the four successive electrodes which is in spaced relation to the distal member of the third electrode. The fourth electrode and the distal member of the third electrode are interconnected by a pair of insulative spacers.

Abstract: The present imaging system, like prior imaging systems, includes an electron tube and an external solenoid which is disposed around a portion of the tube. An electron gun within the tube has a plurality of support beads located substantially symmetrically around the gun. Each of the beads comprises a body of insulating material having a first major surface and an oppositely disposed second major surface. A recess is formed in the first major surface and extends into the body of the material. A plurality of connectors corresponding to the number of supports beads are also provided. Each of the connectors comprises a single piece of metal having a proximal end, a distal end and a central body interconnecting both ends. The proximal end of each connector includes an embossment which conforms to the curvature of the leads which extend through a stem assembly of the tube.

Abstract: The invention relates to improved strengthening means for a substantially planar one-piece electrode component utilized in an in-line multi-beam CRT electron gun assembly. Advantageous ruggedizing properties are achieved by discretely formed longitudinal channels oriented along the sides of the component with defined ledge portions extending outward therefrom; beneficially dimensioned supporting projections are formed as integral extensions thereof. A plurality of cooperating mini-channels are included as transversals in the component to provide a markedly improved structure.

Abstract: In an image pickup tube comprising a glass bulb, a face plate, a target surface, a mesh electrode arranged in opposition to the target surface, and a mesh holder to support the mesh electrode, the mesh electrode having supported with non-uniform tension at various portions thereof by the mesh holder whereby microphonic noise is attenuated rapidly.

Abstract: A beam generating system for electron tubes, particularly travelling wave tubes, is formed of a beam shaping electrode and a dispenser cathode supported therein having an emission disk at its end face. A positional change of the dispenser cathode in the beam shaping electrode at different ambient temperatures is suppressed with the beam generating system, and thus a beam defocussing is avoided. According to the invention, the dispenser cathode is directly connected to the beam shaping electron and is connected below the emission disk by means of a radial cathode support. The beam generating system of this type is particularly employed in travelling wave tubes.

Abstract: The novel electron gun comprises, as in prior guns, a plurality of cathode assemblies and at least two spaced successive electrodes having aligned apertures therethrough for passage of a plurality of electron beams. The cathode assemblies and the electrodes are individually held in position from a common ceramic member. The ceramic member has a first major surface and an oppositely disposed second major surface with a metallized pattern formed on at least a portion of each major surface. The electrodes are attached to the first major surface, and the cathode assemblies are attached to the second major surface. Unlike prior guns, a first transition member is attached to the metallized pattern on the first major surface. At least one of the electrodes is attached to the first transition member.

Abstract: The novel electron gun comprises, as in prior guns, a plurality of cathode assemblies and at least two spaced successive electrodes having aligned apertures therethrough for passage of a plurality of electron beams. The cathode assemblies and the electrodes are individually held in position from a common ceramic member. The ceramic member has a first major surface and an oppositely disposed second major surface with a metallized pattern formed on at least a portion of each major surface. The electrodes are attached to the first major surface, and the cathode assemblies are attached to the second major surface. A transition member is attached to the metallized pattern on the first major surface. The transition member includes a substantially flat portion attached to the metallized pattern on the first surface and two upright portions substantially perpendicular to the flat portion and substantially parallel to each other.

Abstract: The novel electron gun comprises, as in prior guns, a plurality of cathode assemblies and at least two spaced successive electrodes having aligned apertures therethrough for passage of a plurality of electron beams. The cathode assemblies and the electrodes are individually held in position from a common ceramic member. The ceramic member has a first major surface and an oppositely disposed second major surface with a metallized pattern formed on at least a portion of each major surface. The electrodes are attached to the first major surface, and the cathode assemblies are attached to the second major surface. A transition member is attached to the metallized pattern on the first major surface. The transition member includes a substantially flat first part and a second part electrically isolated from the first part.

Abstract: An electron gun assembly includes a plurality of cathode assemblies and a plurality of spaced successive electrodes mounted on at least two electrically-insulative support rods. At least one of the electrodes comprises a deep-drawn substantially rectangular cup-shaped member having a base portion, a supporting flange portion, including a plurality of attachment tabs, and a sidewall extending therebetween. The sidewall includes a plurality of reinforcing ribs formed therein which extend substantially from the supporting flange portion to the opposite end of the sidewall adjacent to the base. The reinforcing ribs minimize the flexure of the sidewall.

Abstract: The gun of a cathode ray tube (CRT) is held precisely centered in the neck of the CRT by a pair of cylindrical spacers and a spring, all equally spaced around the electron gun.

Abstract: An electron gun for a cathode ray type tube and comprising a coaxially aligned series of tubular electrodes insulatingly connected to one another to form a sub-assembly and an axially spaced glass stem having sealed through it an array of electrical terminal pins, at least one of the electrodes being electrically connected to a terminal pin through a hollow tubular conductor having crimped portions which permit misalignment of the stem with respect to the gun while supporting said sub-assembly of electrodes axially and anti-rotationally with respect to said terminal pins extending from the stem.

Abstract: A cathode-ray tube having an electron gun includes at least one cathode assembly comprising a novel cathode sleeve, a heater filament disposed within the sleeve and a cathode eyelet disposed around at least a portion of the cathode sleeve and attached thereto. The cathode sleeve has oppositely disposed ends, one end being open and the other end being closed by a cap having an electron emitting coating thereon. The novel cathode sleeve comprises a longitudinally extending first portion having a first diameter conforming closely to the heater body portion of the heater filament for reducing the power requirement thereof, and at least one other longitudinally extending portion having a diameter greater than the first diameter. The first portion and the other portion of the cathode sleeve being connected by a transition region inclined at an obtuse angle to the longitudinally extending first portion of the sleeve.