Abstract: An electron gun (1) includes an emitter (2), a tubular support (3) and an adaptor (4) for receiving the emitter. The adaptor includes a tapered plugging surface (7) and the tubular support includes a correspondingly tapered seating surface (9) for receiving the plugging surface. The plugging surface and seating surface have conical profiles which help to position the adaptor concentrically with the support.

Abstract: Cathode structure for cathode ray tube comprising an eyelet in two separate parts positioned such that one of the parts covers, in the longitudinal direction and at least partially, the second part. The two parts are linked to each other at the shouldered ends. This structure reduces the heat losses of the cathode and reduces its consumption while it is operating.

Abstract: An electron gun assembly for a cathode ray tube includes a cathode for emitting an electron beam, and a plurality of electrodes mounted in a row with predetermined gaps therebetween. The electrodes include a focus electrode for receiving a focus voltage, and an anode electrode surrounding part of the focus electrode for receiving an anode voltage. A support is used to fix the electrodes in an aligned configuration, and a first auxiliary support secures the focus electrode to the support. The focus electrode includes an intermediate aperture section, a small aperture section, and a large aperture section, while the anode electrode includes a large aperture section and a small aperture section. Two second auxiliary supports secure the anode electrode to the support.

Abstract: The disclosure describes an electron gun having cathode support structure which comprises an eyelet that surrounds a cathode and is welded to the cathode, and a metal plate 150 substantially parallel to the longitudinal axis of the gun. The metal plate has a central part 152 folded so as to partially surround the eyelet and two side arms 151 extending an each side of the central part and connected thereto by a region 155. The region has, in the direction of the longitudinal axis, a width which is greater than the width of the side arms in the same direction, thereby making it possible to use the same support for the side and central cathodes of a three-beam gun.

Abstract: A low voltage Einzel gun design maximizes the size of the second main lens to reduce spherical aberrations thereby reducing spot-size and improving focus quality. The gun's final accelerator electrode is formed as an internal conductive coating on the neck, which is connected to anode potential through an anode button. The jumper between the final and second accelerator electrodes is removed and the second accelerator electrode is connected through the high voltage stem pin to an external potential. Connection of the high voltage stem pin to anode potential defines an Einzel gun. The focus electrode is now connected to one of the low voltage stem pins. In a high voltage Einzel gun, connecting the second accelerator electrode and focus electrode to the high voltage and a low voltage stem pin, respectively, would cause arcing between the pins.

Abstract: Electron gun having cathode support means comprising:

Abstract: Among a plurality of electrodes composing an electron gun, at least one electrode is separated into two along a plane substantially perpendicular to a central axis, the two being a first cylindrical electrode and a second cylindrical electrode. Between the two electrodes, a connecting member in an approximate cylindrical shape having a slit is interposed, which electrically connects the first and second cylindrical electrodes with each other. The first and second cylindrical electrodes are fixed to a support rod via the connecting member and support portions provided on a side of the connecting member. Since a modulation magnetic field from outside a cathode-ray tube passes through the slit, eddy current loss can be reduced, whereby a desired electron beam modulation effect can be achieved.

Abstract: A deflection apparatus for a cathode ray tube includes a horizontal deflection coil, a vertical deflection coil positioned external to the horizontal deflection coil, an insulating member interposed between the horizontal and the vertical deflection coils, and a core placed on the insulating member while being connected to the vertical deflection coil. The horizontal deflection coil, the vertical deflection coil, the insulating member and the core have at least one sectional structure proceeding perpendicular to the tube axis of the cathode ray tube. With any one of the horizontal and the vertical deflection coils, the sectional structure is formed with a combination of arcs corresponding to a horizontal axis X, a vertical axis Y and a diagonal axis between the horizontal and the vertical axes X and Y. The arc corresponding to the horizontal axis X or the vertical axis Y is formed with an arc centering around a point on the axis other than the horizontal axis X or the vertical axis Y.

Abstract: An electron gun arrangement includes a cathode having a front surface and control grid located in front of it. The control grid is mounted via a cylindrical support on a Kovar mount. The cathode is supported by a cylindrical support mounted on a Kovar support. Ceramic material being located between the two supports. The vacuum envelope within which the electron gun is contained includes the Kovar support and a flexible member with which it makes a vacuum seal, this member being of copper. The copper member is sealed to a ceramic cylinder via metal flanges. The assembly permits the spacing between the cathode and grid to be maintained while the copper member permits thermal expansion to occur to maintain vacuum integrity.

Abstract: A method of manufacturing an electron gun having a sub-assembly to interconnect the beaded unit and the base of the electron gun. This sub-assembly is manufactured by making a pattern of apertures in a planar element, thereby forming a number of securing elements. In the next step, portions of the securing elements are bent out of the plane of the planar element and then connected to an insulating plate, thus forming the sub-assembly of securing elements and insulating plate. This sub-assembly is preferably provided with funnel-shaped apertures to lead the electric leads of a number of gun electrodes through the insulating plate. This allows an accurate and easy interconnection of the electric leads and the pins of the base.

Abstract: The profile lines of plate-like grid electrodes are formed by a first punching step and separation lines of the plate-like grid electrodes are formed by a subsequent punching step. The angle of a crossing portion formed by the profile line and the separation line is set to not less than 70 degrees and not more than 110 degrees. Due to such a constitution, burrs on the plate-like grid electrode which constitutes an electron gun of a color cathode ray tube can be reduced so that the quality of the cathode ray tube can be enhanced and the manufacturing time of the cathode ray tube can be shortened.

Abstract: An electron gun for a cathode ray tube includes a cathode assembly, a control electrode, and a screen electrode adjacent to the cathode assembly, combined, and spaced apart from each other by a gap maintainer, focusing electrodes sequentially arranged adjacent to the screen electrode, forming an auxiliary lens and a main lens, and bead glass in which portions of the cathode assembly and respective electrodes are embedded and supported.

Abstract: An electron gun fixer comprising bulb spacers fixed to an electron gun to be inserted into a bulb neck. Each of the bulb spacers has a supporting portion to be put into press contact with the inner surface of the bulb neck. The expression “R1≧R2>R3” holds for the supporting portion, where R1 is the radius of curvature in the cross section along the direction of insertion of the electron gun into the bulb neck, R2 is the curvature of a peripheral part in the cross section perpendicular to the direction of insertion, and R3 is the radius of curvature for the remaining parts in the cross section perpendicular to the direction of insertion. R2 is substantially equal to the radius of curvature R0 of the bulb neck.

Abstract: Disclosed is a cathode supporter for an electric gun in a CRT(Cathode Ray Tube), which can reduce an amount of expensive ceramics glass used, which is filled within the cathode supporter, by removing guide pipes from the cathode supporter, which is conventionally provide with the guide pipes through which guide pins of a beading jig are inserted, to decrease a horizontal length a of the cathode supporter. According to a preferred embodiment of the present invention, the electric gun includes three cathodes for radiating electron beams, a plurality of electrodes for controlling, accelerating and focusing the electron beams, and guide holes formed at both sides of some electrodes among the plurality of electrodes for allowing guide means to be inserted therethrough, wherein the horizontal length of the cathode supporter for supporting the cathodes are smaller than an inside horizontal length of the guide means to prevent any interference from being generated between the cathode supporter and the guide pins.

Abstract: Cathode venting for electron guns is improved by forming one or more vent holes around the apertures in the triode and any pre-focus lens. This configuration places the vent holes next to the active area of the cathode and provides a line of sight from the cathode to the funnel. If separate alignment holes are used to protect the aperture, one or more vent holes are provided in addition to the alignment holes. The pattern of vent and alignment holes is preferably rotationally symmetric about the aperture so that they do not effect the beam.

Abstract: An electron gun with a simple structure, wherein electrodes are extracted along the axis of the gun. The electron gun comprises first stepped metal cylinder 201 which is joined with cathode 200, second metal cylinder 202 which is joined with first stepped metal cylinder 201, metal plate 221 which is joined with second metal cylinder 202, insulating cylinder 220 which is joined with metal plate 221, third metal cylinder 260 which is joined with the outer surface of insulating cylinder 220, fourth metal cylinder 210 which is joined with third metal cylinder 260, stepped insulating cylinder 250 which is joined with fourth stepped metal cylinder 210, fifth metal cylinder 270 which is joined with stepped insulating cylinder 250. Fifth metal cylinder 270 is grounded. Cathode lead wire and heater lead wire are extracted from insulating cylinder 220, while anode lead wire is connected with metal cylinder 260.

Abstract: A cathode structure of an electron gun includes a rectangular insulating substrate made of an anisotropically heat decomposable boron nitride, a cathode base mounted on one surface of the insulating substrate with a conductive layer interposed therebetween, and a heater prepared by patterning an anisotropically heat decomposable graphite film formed on the other surface of the insulating substrate. A slit is formed in each of the end portions of the insulating substrate, and the end portions of the insulating substrate are fixed to support members of a holder by ribbons wound on the end portion so the insulating substrate with being passed through the slits.

Abstract: A reinforcing electrode plate having at least one electron-beam through-hole that passes an electron beam is connected to at least one of a focusing electrode and a final accelerating electrode at its opening portion. Supporting portions of the reinforcing electrode plate are formed so as to project further outside than the opening portion or the peripheral face of the electrode, thus fixing the reinforcing electrode plate to an insulating support. Therefore, the deformation of the focusing electrode or the final accelerating electrode that occurs in assembling a main lens of an electron gun used for a color cathode-ray tube is prevented, thus decreasing the variation in property of the electron gun. Additionally, by adjusting the shape or the like of an opening through which an electron beam passes in the reinforcing electrode plate, a focusing power of the main lens can be adjusted in the horizontal direction and in the vertical direction.

Abstract: A field emission device (400) includes a substrate (414), a cathode (415) disposed on substrate (414), a dielectric layer (418) disposed on cathode (415) and defining an emitter well (421) and further defining a focusing well (448), an electron emitter (420) disposed within emitter well (421) and connected to cathode (415), a gate electrode (422) disposed on dielectric layer (418), and a focusing structure (450) disposed within focusing well (448) and connected to cathode (415) for focusing an electron beam (430) emitted by electron emitter (420). A method for fabricating field emission device (400) includes directing a second collimated vapor beam (461) toward focusing well (448) subsequent to forming an encapsulating layer (478) over emitter well (421), thereby forming focusing structure (450).

Abstract: To provide a cathode ray tube stabilizing the potential at an inner wall of a neck, providing stabilized nocking effect by forced discharge among electrodes or the like, promoting the withstand voltage characteristic of an electron gun and preventing deterioration in image quality resulted from straying leakage current, an electron gun where both ends of metal lines are welded to an intermediate electrode and a focus electrode (5-1-th electrode) to surround beading glass and a voltage dividing resistor, is sealed in a neck portion and thereafter, the metal lines are heated by high frequency heating by which a metal film is formed on surfaces of an inner wall of the neck and the voltage dividing resistor and the beading glass.

Abstract: A one-piece grid assembly for use in an electron gun for a miniature cathode-ray tube application that consists of a core made of an electrically insulating material, a first grid deposited on the core, and a second grid deposited on the core that is spaced apart from the first grid, and a method of making the one-piece grid assembly by first compression molding the core and then depositing the grid by plating are disclosed.

Abstract: A cathode ray tube is provided with an electron gun having an electron lens including a large-diameter cylinder electrode and a small-diameter cylinder electrode composed of a large-diameter cylinder portion and a small-diameter cylinder portion, and at least the large-diameter cylinder portion of the small-diameter cylinder electrode is inserted in the large-diameter cylinder electrode thereby forming the electron lens. The small-diameter cylinder portion extending in the tube axis direction of the large-diameter cylinder electrode and connected to the large-diameter cylinder electrode is expanded or bulged, or the bottom portion of the large-diameter cylinder electrode is removed while only the electrode support portion connected to the large-diameter cylinder electrode is left, so that the electrode support fixed to the outer surface of the small-diameter cylinder portion of the small-diameter cylinder electrode can pass therethrough.

Abstract: A deformation produced by heat when a G1 grid is welded can be suppressed. A U-shaped slit (34) is formed on an outer peripheral wall (31) of a G1 grid (12). A spot-welding portion (X) is set to an end edge of a joint portion of the U-shaped slit (34) and this spot-welding portion (X) is spot-welded to a retainer (22) of a cathode (21) by a laser beam. In the G1 grid (12), the deformation produced by heat upon welding is absorbed by the surrounding portions of the slit (34). Therefore, it becomes possible to prevent the opposing surface opposing a G2 grid (13) from being expanded by heat. Thus, the spacing between the electrodes can be maintained to be a proper one and the angles of the electron beam emitting apertures can be maintained at proper ones. Therefore, it becomes possible to prevent the characteristic of the electron gun and the resolution of the cathode ray tube from being deteriorated.

Abstract: A dust collector for collecting dust in a cathode ray tube includes collecting parts which form a collecting space for collecting dust in the cathode ray tube. One of the collecting parts is formed by a retainer for retaining the collecting parts in the cathode ray tube. The dust collector improves the internal voltage characteristics of the CRT and the picture quality.

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: The present invention includes a cathode-ray tube (10) capable of providing a high-brightness, high-resolution large screen display that is compatible with, for example, field sequential liquid crystal color display systems and monochrome imaging systems. Preferably, the tube includes a small-diameter cathode assembly (14 of 110) with an adjacent small-diameter control grid electrode (38 or 114). The small diameters of the cathode assembly and the control grid electrode result in relatively little capacitance and are, therefore, compatible with relatively high video signal bandwidths. A thick accelerating electrode (66 or 150) is positioned adjacent the control grid electrode to prefocus the electron beam and, thereby, form it with relatively low spherical aberration. In a preferred embodiment, the electron beam is modulated in a push-pull manner by applying a video modulation signal and its inverse to the cathode and the control grid electrode.

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: 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: 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 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: 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: 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: A bipotential electron gun for cathode ray tubes comprising an arrangement of a cathode, a control electrode, and an accelerating electrode, a first anode and a second anode such that the second anode is formed with windows in its large diameter cylindrical portion and the large diameter end portion of the first anode is mounted within the large diameter cylindrical portion and is fixedly supported by an insulating support member that extends through the windows such that the first anode is firmly supported and coaxially mounted between the first anode and the second anode which form the principal lens in a secure manner.

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: An electron tube comprises a tubular glass envelope portion (10) having a central axis m and an inside diameter D. In the envelope portion (10) an electrode system (13) is inserted, the central axis l of which coincides with the central axis m. The electrode system (13) comprises a number of resilient elements (16) extending towards the wall of the envelope portion (10) and each pressing against a respective wall portion (19) thereof. The wall portions (19) are a distance R.sub.1 <D/2 from the central axis m. In the non-assembled condition of the electrode system, the free ends (18) of the elements (16) are a distance R.sub.2 from the central axis l, the relation R.sub.1 <R.sub.2 <D/2 being satisfied. This measure permits preventing the occurrence of damage to the wall of the envelope portion (10) when the electrode system (13) is inserted into it.

Abstract: An electron gun for a cathode-ray tube comprises a modular beam-forming region assembly and a main focusing lens which are affixed to at least two insulative support rods. The modular beam-forming region assembly includes a plurality of cathode assemblies, a control grid electrode and a screen grid electrode. The control grid electrode and the screen grid electrode are attached to a first major surface, of a common ceramic member and the cathode assemblies are attached to a second major surface thereof. A transition member is disposed between a metallized pattern on the first major surface of the ceramic member and the screen grid electrode. The transition member includes a substantially flat portion attached to the metallized pattern and two upright portions substantially perpendicular to the flat portion and substantially parallel to each other. The screen grid electrode is disposed between the upright portions and connected thereto by a plurality of step-like support members.

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 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, such as a camera tube or a display tube, having an electron gun with a cathode unit including a cathode shank (30) suspended coaxially in an aperture in an assembly plate (38) and extending perpendicularly to the longitudinal axis of the electron gun. The cathode unit includes a metal supporting plate (41) which is accurately positioned with respect to the assembly plate (38). The assembly plate (38) and the supporting plate (41) each have two apertures through which supporting pins (44) for electrical connection lugs (32) extend. Glass plugs (43) connect the assembly plate (38), the supporting pins (44) and the supporting plate (41) together.

Abstract: A cathode and grid assembly includes a first grid of small diameter secured to a planar inner surface of a ceramic means and over a central opening in the ceramic means and a second grid having a first planar section secured to a planar outer surface of the ceramic means, a second planar section positioned within the central opening and a frustum of a cone section interconnecting the first and second planar sections with the frustum of a cone section extending along a frustum of a cone outer surface of the ceramic means.

Abstract: A cathode support, in an electron gun of a cathode ray tube comprising four lamellae (22, 24, 25, 30) which are connected together by means of an electrically insulating sealing glass (23). A first one of the lamella (22) engages a first electrode (10) of the electron gun. Second and third lamellae (24, 25) are situated substantially in one plane, are electrically-insulated from each other, and are cathode filament. The cathode shaft (33) is suspended from a fourth one of the lamellae (30). The cathode support is well suited for automated mass production.

Abstract: The present invention is an improvement in an electron gun for use in a cathode-ray tube. Such a gun includes a cathode assembly and at least two spaced successive electrodes having aligned electron beam apertures therein. The improvement comprises one of the two electrodes having a plurality of alignment apertures disposed around the periphery thereof. A plurality of insulative support assemblies are referenced to the plurality of alignment apertures and interconnected to the one electrode. Each of the support assemblies also includes at least one support plate having a locating portion which is attached to the other electrode. A method is disclosed for aligning the electron beam apertures of the two successive electrodes.

Abstract: In an electron gun, e.g. for a cathode ray tube, an anode is supported from another anode by spacers which fit between overlapping portions of the two anodes and locate in recesses in the two overlapping portions. The spacers are typically glass balls. The invention finds especial application in mounting of a final anode whose diameter is greater than the diameter on which rods supporting the other electrodes of the gun lie.

Abstract: A cathode eyelet has its cathode receiving end formed in an elliptical cross-section. Pressure on the long axis opens the short axis to a dimension large enough to admit the cathode. Removal of the pressure allows the sides of the ellipse defined by the short axis to collapse and frictionally retain the cathode in position until it is welded to the eyelet.

Abstract: An electron gun includes an electron beam source and at least two spaced apart successive electrodes. The successive electrodes are individually attached to, spaced from, and disposed concentric with and substantially within a ceramic cylinder. A resistive coating is uniformly disposed on at least an interior wall surface of the ceramic cylinder.

Abstract: An improvement in an anode contact spring for use in a color cathode ray tube is disclosed. The improvement comprises positive locking means for locking an attachment end of the contact spring to a supportive member for suspending the shadow mask adjacent to the panel. The positive locking means comprises bolt means extending from the supportive member and which is located in a preselected lateral position on the member. Clasping means on the attachment end provide for clasping the supportive member. One leg of the clasping means is a hasp for engaging the bolt. An anti-twistoff fold is provided in the contact spring adjacent to the attachment end. Upon engagement by manual pressure of the clasping means with a supportive member, the clasping means expands to provide engagement of the hasp with the bolt, then contracts to provide push-click positive locking of the contact spring to the supportive member.