Abstract: An improved front assembly for a color cathode ray tube having a tension foil shadow mask is disclosed. The faceplate of the tube has on its inner surface a centrally disposed phosphor screen surrounded by a peripheral sealing area adapted to mate with a funnel. The assembly includes a shadow mask support structure for securing a shadow mask in tension on the structure and for spacing the shadow mask from the screen. The support structure is comprised of an assembly including a plurality of elongated members that substantially surround the centrally disposed phosphor screen and meet at corner areas of the screen. The elongated members having open ends. The support structure also includes corner connector members having reduced end or plug portions projecting into the open ends of adjacent ones of the elongated members at the corner areas of the screen. The plug portions are sized and shaped to provide a snug fit with the open ends of the adjacent elongated members and are secured and sealed thereto.

Abstract: A cathode ray tube has an envelope comprising a mild steel rear housing (1) with a side wall portion (4) defining an opening over which a flat, glass, faceplate (2) is mounted. The faceplate is sealed in a vacuum tight manner using a compliant pressure bonded seal (10), comprising pressure deformable material such as lead, to the outer, flat surface of a flange (8) of the rear housing which projects inwardly of the opening from the side wall portion.

Abstract: A front assembly for a color cathode ray tube is disclosed that as having improved means for mounting components for electrical interconnection and magnetic shielding. The assembly comprises a faceplate having on its inner surface a centrally disposed, electrically conductive phosphor screen. A peripheral sealing area is located on the inner surface of the faceplate for receiving a funnel, and the funnel has an internal electrically conductive funnel coating adapted to receive a high electrical potential. A metallic shadow mask support structure is secured to the inner surface of the faceplate between the screen and the peripheral sealing area, and encloses the screen and is in contact with the screen. The structure supports in electrical union therewith a tensed foil shadow mask. The structure has a side adjacent to the sealing area essentially perpendicular to the screen which has secured thereto by weldments an internal magnetic shield.

Abstract: An improved front assembly for a color cathode ray tube having a tension foil shadow mask is disclosed. The faceplate of the tube has on its inner surface a centrally disposed phosphor screen surrounded by a peripheral sealing area adapted to mate with a funnel. A shadow mask support structure is provided for securing a shadow mask in tension on the structure and spacing the shadow mask from the screen. The support structure includes an undulated strip defining a bottom sinuous edge for securing the support structure to the faceplate and a top sinuous edge for securing the shadow mask to the support structure. A cap may be provided for securement to the top sinuous edge of the undulated strip to provide a land for securing the shadow mask to the support structure.

Abstract: A cathode-ray tube has at least two mounting members that are angularly spaced about the axis of the CRT, and a support structure for receiving the CRT has mounting members for engagement with the mounting members of the CRT, whereby the CRT and the support structure have at least first and second pairs of mutually interengageable mounting members. The first pair of mounting members comprises a first cylindrical post and a circular hole for receiving the first post and the second pair of mounting members comprises a second cylindrical post and a slot having a width substantially equal to the diameter of the second post.

Abstract: In a cathode ray display tube having a glass faceplate carrying a screen thereon including a screen electrode and an electron multiplier disposed adjacent the screen for current-multiplying an electron beam directed onto the screen, a low profile termination arrangement for establishing electrical connection with the screen electrode and a multiplier electrode comprises respective, spaced, thick film conductive tracks on the inner surface of the faceplate and bordering the screen connected at lead-in portions thereof with conductor means, e.g. conductive epoxy, in apertures extending through the faceplate via metal sealing discs.

Abstract: A flat cathode ray display tube has an envelope divided into front and rear portions by a partition carrying frame deflection electrodes with an electron gun (30) and line scanning deflector positioned in the rear portion, the electron beam being directed initially parallel to a flat faceplate of the envelope, turned through 180.degree. by a reversing lens into the front portion and then deflected by electrodes towards a screen on the faceplate. In addition to the electrodes, other components are also mounted on the partition forming a sub-assembly whereby correct mutual positioning is ensured and assembly facilitated. A spacing structure accurately spaces the sub-assembly from the faceplate and supports also an electron multiplier for beam current amplication.

Abstract: A projection picture tube includes a bulb, a sealing chamber disposed in contact with a front surface of a phosphor screen panel of the bulb and sealed with a liquid coolant, and a holding mechanism for holding the sealing chamber by the bulb. The sealing chamber includes a transparent member disposed in front of the phosphor screen panel to be spaced apart therefrom, a heat dissipation member which is disposed between the transparent member and the phosphor screen panel and part of which is in contact with the liquid coolant sealed in the sealing chamber, seal members respectively disposed between the heat dissipation member and the phosphor screen panel and between the heat dissipation member and the transparent member, and a holding piece for holding the transparent member on the heat dissipation member. The holding mechanism is coupled to the heat dissipation member.

Abstract: A front assembly for a color cathode ray tube is disclosed. The tube includes a faceplate having on its inner surface a centrally disposed phosphor screen. A shadow mask support structure is resting on and secured to the inner surface of the faceplate on opposed sides of the screen. A foil shadow mask is secured to the structure under high inward tension. The shadow mask support structure according to the invention is characterized by having at least one foot resting on the inner surface for bracing and stabilizing the structure against upset from the high tension of the mask. Other embodiments of the invention are shown in which one or more of the feet have a plurality of open-ended or closed-ended openings therein for facilitating passage of the cement used for attaching the support structure to the inner surface of the faceplate. The openings according to the invention present cement-contactible edges for enhancing the securement of the support structure.

Abstract: A novel color selection electrode assembly is utilized in screening a pattern of phosphor areas upon the faceplate of a color cathode ray tube. The faceplate, which is formed of a material having a predetermined temperature coefficient of expansion, has registration affording means. The aforesaid assembly comprises an auxiliary mount formed of a material having a temperature coefficient of expansion greater than that of the faceplate and has a central opening of such span as to enable the mount to surround the periphery of the faceplate. Index bosses, cooperable with the faceplate registration affording means, are detachably secured to the mount. A planar metal foil having a predetermined pattern of apertures and formed of a material having a temperature coefficient of expansion not greater than that of the mount is secured to the mount.

Abstract: A television camera tube including a getter (23,24) is assembled so as to be thermally independent of an electron gun (4) and may be provided with any desired electric potential. The getter (23,24) is positioned in a tubular envelope portion (1) of the tube by means of a supporting member (12,21,25) which rests on a supporting edge (11) in the envelope (1). The supporting edge is formed by a stepped reduction of the internal transverse dimension of the envelope portion (1). The supporting member (12) comprises an inner ring (16) which is connected to an outer ring (15) in a limited number of places (19). In the circumferential direction the inner ring (16) and the outer ring (15) include an interruption (17) to counteract excessive heating of the rings during inductive heating of the getter (23,24). Metal strips (21) which support the getter (23,24) are connected to the inner ring (16). The supporting structure is well suited for use in comparatively small cathode ray tubes.

Abstract: A support frame for supporting a tensed mask adjacent to a flat panel tube and wholly within the tube includes an outer flange, a shelf extending from the flange parallel to the flat panel and providing a support surface for the tensed mask and a skirt directed away from the flat panel and adapted to join with the remainder of the tube. The configuration provides a very rigid support frame for resisting deformation when not bonded to the other tube elements, such as during screening of the panel when the support frame alone bears the forces exerted by the tensed mask.

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 internal magnetic shield disposed within a CRT has a machine-stamped integral bar member formed parallel to a flat surface thereof such that a narrow underpass is formed between the two ends of the bar member. A flat end of a contact spring having a resilient ramp-shaped tongue projecting therefrom is inserted through the underpass sufficiently to allow the end of the tongue to clear the bar member and spring back to contact the edge of the bar member, thereby preventing removal of the spring.

Abstract: A method and apparatus for mounting a video type display tube (20) in a given dynamic mechanical environment employs a plurality of mounting members (56, 56a, 56b, 56c) which are secured to the periphery of the tube (20) at four corresponding predetermined static and dynamic reaction points (1,2,3,4) where substantially minimum bending and torsional stresses occur for the mounted tube (20). Elastomeric grommets (53,54,52a,54a,52b,54b,52c,54c) having a predetermined dynamic stiffness over a desired temperature range capable of attenuating the associated dynamic G forces of the dynamic mechanical vibration and dynamic mechanical shock in the given dynamic mechanical environment are mounted in opposing pairs in an aperture (60) in each of the respective bracket members (56, 56a,56b,56c).

Abstract: An improvement in a tension mask type color cathode ray tube comprising an envelope funnel that includes a bell portion, one extremity of which has a sealing land. The tube further comprises a flat face panel formed of a material having a predetermined temperature coefficient of expansion. The panel has a target area adapted to receive a pattern of luminescent color phosphor deposits. A sealing surface circumscribes the target areas. The improvement concerns a constituent structure which is disposed between the funnel sealing land and the panel sealing surface and which is frit sealed therebetween. The structure defines a central opening which is dimensioned to enclose the panel target area and it is formed of a material having a temperature coefficient of expansion approximating that of the face panel. The structure itself comprises means which define a support surface that confronts the target, which surface is adapted to fixedly receive a tensed color selection mask.

Abstract: A color cathode-ray tube according to the present invention includes an electron gun, in the neck portion thereof, aligned with the central axis of the neck portion of the cathode-ray tube by support members connected to the rear end portion of the electron gun to be in contact with the inner surface of the neck portion in addition to contactors connected to the front end portion of the electron gun.

Abstract: A faceplate assembly includes a faceplate flange, a faceplate member and a sealing material, such as a glass frit, for sealing the faceplate member to the faceplate flange. Three gauging members, integral with the flange, are in contact with the faceplate member to ensure that the faceplate member is sealed parallel to the faceplate flange and at a predetermined distance therefrom.

Abstract: Television camera tube comprising a tubular envelope of glass drawn on a mandril and having an internal conductive wall coating. A diaphragm having an aperture is supported in the envelope by a supporting surface extending transverse to the longitudinal axis of the envelope. The supporting surface is formed by a substantially stepwise change in the internal transverse dimension of the envelope. The conductive wall coating is interrupted at a distance from the diaphragm. The stepwise change in the internal transverse dimension of the envelope portion taking place in at least a first a step and second step. The first step forms the supporting surface for the diaphragm. The interruption (6) in the conductive wall coating is provided on the second step. If the diaphragm in such a tube is a flat plate and the distance d between the first step and the second step is between 0.4 D and D, where D is the inside diameter of the envelope between the first and the second step, the axial astigmatism.

Abstract: A cathode ray tube (CRT) mount which eliminates the need for mounting ears and provides for improved alignment of the CRT in the mount by providing a bezel having an opening therethrough for viewing the face of the CRT and a rear support member having an opening therethrough for receiving the rear portion of the CRT with resilient material being positioned on the bezel and the rear support in all areas that contact the CRT. Fasteners are used to urge the bezel and rear support member together to firmly mount the CRT. Means are provided for accurately aligning the rear support member to the bezel.

Abstract: A color cathode ray tube comprises a faceplate having a predetermined pattern of phosphor deposits upon a target surface thereof. A color selection electrode assembly includes a frame which supports in tension a foil having an array of apertures related to the predetermined pattern of phosphor deposits on the faceplate. Means are disclosed for sealing the assembly between the faceplate and the rear envelope section of the tube to incorporate the color selection electrode assembly as an integral part of the cathode ray tube. Indexing means on the assembly and faceplate provide for repeated interregistered matings of the color selection electrode assembly with the faceplate. A method of utilizing the electrode assembly for screening the pattern of phosphor deposits on the faceplate is also disclosed.

Abstract: A cathode ray tube device which comprises an electromagnetic shielding casing, a cathode ray tube held in said casing, an elastic material provided between the casing and cathode ray tube in contact therewith, and a space or porous material formed in part of a region defined between the casing and elastic material, and wherein said space or porous material suppresses the axial shifting of the cathode ray tube resulting from the thermal expansion of the elastic material when it is highly heated.

Abstract: A cathode ray tube with a potted base is provided which comprises: a plurality of stem pins which extend through a stem mounted at an end of a neck and fixed to the stem; an insulating housing which is mounted on the stem and which is formed integrally with a base having holes for receiving the stem pins, most of the bottom of the housing comprising the base; terminals for connecting leads extending into the housing from the outside to the stem pins extending into the housing from below through the holes in the base; an insulating material which is filled in the housing and which fixes the stem pins, the leads and the terminals; and an insulating adhesive for adhering the stem to the bottom of the housing.

Abstract: The invention relates to a display monitor of the kit type which display monitor includes a cathode ray tube (CRT) and video driving circuitry for driving the CRT, the driving circuitry including a monitor circuit board and a flyback transformer. In accordance with the invention, a structural member is provided for mounting the video driving circuitry. The structural member is permanently supportingly attached to the CRT at the corner ears of the CRT. The structural member is a metallic member and is spaced from the neck of the CRT.

Abstract: The invention relates to improved combination means for achieving positive placement of an internal electrical contactor in a cathode ray tube to effect and maintain a definitively oriented connection between an internal magnetic shield and a conductive coating disposed on the interior surface of the funnel portion of the tube envelope. Discrete portions of the shield are modified to form a pair of contactor positioning nubs and a cooperating indentation to contain a portion of the contactor in desired alignment therewith.

Abstract: The invention relates to a three-portion CRT mounting bracket of the type employed for supporting a banded tube in a display environment. An apertured mounting appendage is located spatially above a seating portion by means of an intermediate protruding portion. By this integral arrangement, the mounting appendage is oriented rearward of the front edge of the banding strap. This permits the strap to advantageously overlay the mold line of the panel, while the appendage is suitably positioned in a plane thereabove to fulfill the respective tube mounting requirements.

Abstract: A conductive spacer having one end secured to an electron gun structure housed in the neck tube of a color picture tube makes contact, at the other end, to a conductive film coated on the inner wall surface of the envelope of the color picture tube. A portion of the conductive film making contact with the conductive spacer comprises a conductive frit glass film.

Abstract: A method of manufacturing a cathode-ray tube is provided by drawing a glass tube section softened by heating onto a mandrel whose transverse dimensions increase near one end of the tube section in the direction of the end at least twice in a generally stepwise manner, so that in the direction of the end, upon drawing, at least a first and a second wall portion of the inner wall of the tube section become located in planes substantially perpendicular to the tube axis. The first wall portion may serve as an engaging surface for an electrode and the second wall portion may serve as an engaging surface for the window. A third drawn wall portion may serve as a reference face of the tube in a device.

Abstract: In a cathode-ray tube, in particular a camera tube, the inner wall of the glass envelope is coated with an electrically conductive material interrupted in the proximity of electrodes extending transversely to the wall coating and supported by transversely extending supporting surfaces. At the area of each of the interruptions the envelope has a stepwise decrease of the inside diameter in two steps. In the direction of decreasing diameter the first of these steps constitutes the supporting surface for the transverse electrode and the interruption in the wall coating is provided on a wall portion of the second of these steps. The interruptions provided in this manner do not exert any disturbing influence on the electron beam in the tube.

Abstract: In a color TV bulb formed with a panel, a peripheral panel skirt integral therewith, a funnel portion adapted to mate therewith, a frame and aperture mask adapted to be mounted in said frame and secured in spaced relation with the panel; a supporting structure for the aperture mask and frame including peripherially located outwardly extending spring lugs and spring clips attached to the frame respectively operative for xy orientation and Q spacing of the aperture mask. The panel skirt is formed with a selected number of V grooves located each for receiving a corresponding one of the spring lugs and a ledge face spaced away from the inside surface of the panel to cooperatively engage with and support the spring clips. A forward surface of the funnel engages the spring clips to urge same against the ledge face such that the xy orientation and Q spacing of the aperture mask are fixed relative to the panel.

Abstract: A cathode ray tube includes improved means for supporting scan expansion mesh electrode means, the supporting means comprising knitted metal mesh means in the form of metal braid secured to the mesh electrode means.

Abstract: Disclosed is a picture display tube comprising an envelope having a display window, a cone and a neck. An electrode system to generate at least one electron beam is mounted in the neck and an electrical resistive layer extends over an internal wall portion of the envelope to a point near the electrode system. The tube comprises a getter which is detachably secured to a connecting member projecting internally from the wall of the tube at a location remote from the electrode system by means of a resilient connection strip. The portion of the connection member projecting from the tube wall has a gradually widening end having a largest transverse dimension D and a smallest transverse dimension d and the connection strip of the getter has a first aperture whose dimensions are larger than the dimension D.

Abstract: Disclosed is a bayonet catch for directly securing an electrode in a glass envelope which comprises projections extending inwardly from the envelope and radially extending portions on the electrode which are clamped between the projections upon rotation of the electrode. The material of the envelope and the electrode have substantially equal coefficients of expansion to minimize relative movement between the envelope and the electrode with changes in temperature.

Abstract: An electron beam tube having a cold cathode capable of being used as a caa tube or a display tube. The tube is constructed of two sections which are fitted together in a vacuum. The first section includes the tube neck and face section and an annular opening having a taper at the end thereof. The second section houses the cold cathode and a surface contact area for abuttably engaging a resilient electrical connector housed in the first section. The second section is forceably fitted over the taper on the first section to effect a vacuum tight seal.

Abstract: This disclosure depicts getter support means for use in television cathode ray tubes. A getter support means is structured so as to be retained in the tube by the outward, self-retaining pressure of an expansible member on the inner surface of the neck adjacent to the junction of the neck and the funnel of the tube envelope. Support for the getter assembly is provided by attachment to the expansible member.

Abstract: An evacuated envelope includes front and back walls and a plurality of spaced, parallel support walls between and perpendicular thereto. The support walls form therebetween a plurality of channels. In each of the channels is at least one beam guide which confines electrons injected into the guide in a beam which travels along the beam guide but permits selective deflection of the beam out of the guide toward a phosphor screen on the inner surface of the front wall. A gun structure extends across one end of the channels for generating electrons and directing the electrons into the beam guides. The gun structure includes a thermionic emissive cathode extending across the ends of the channels and support members at spaced points along the cathode which support the cathode within the envelope but allow movement of the cathode with respect to the support members as a result of expansion or contraction of the cathode.

Abstract: A rimless face panel is mounted on a funnel-shadow mask color selection device subassembly for a color television picture tube construction by indexing means establishing a unique positional relationship between the face panel and the mask. Bosses are formed on the inner walls of the funnel to receive mask support brackets which engage spring arms of brackets attached to the mask for precise spacing of the mask from the seal edge of the funnel. In a first embodiment, tabs are provided on the spring arms for engaging slots in the face panel to establish the positional relationship between the face panel and the mask during lighthousing and sealing. In a second embodiment, the tabs are formed on the mask support brackets. In a third and a fourth embodiments, studs in the face panel engage elongated apertures in the mask support brackets.

Abstract: An electrical connective improvement is provided for a multiple-element electron gun assembly in an electron tube. The improvement relates to an isolated electrical conductor extending within the envelope from one of the elements of the electron gun assembly to the closure portion of the tube, whereat the conductor is shaped to project into and be encompassed by the exhaust tubulation wherein a portion of the conductor is sealed. Removal of the exterior portion of the tubulation beyond the seal provides an electrical connection extending exteriorly thereof.

Abstract: A rimless faceplate is mounted on a shadow mask color selection device for a color television tube construction by indexing means establishing a unique positional relationship between the faceplate and the mask. An array of cavities on the inner surface of the plate interfit with the studs on mask mounting brackets to provide transverse positioning while the bracket surfaces extending outward from the studs provide abutting surfaces to the inner face of the faceplate adjacent its stud receiving cavities to establish faceplate-mask spacing. A glass funnel receives the mask in its divergent end with precise spacing of the mask from its seal edge. Portions of the mask mounting brackets are fitted into seats in the funnel which may be cavities or depressions in the seal edge to establish the spacing, particularly the depth of entry of the mask in the funnel.

Abstract: This disclosure depicts a color cathode ray of the shadow mask type. A mask suspension system for establishing a predetermined spatial position of said mask relative to the inner surface of said faceplate is disclosed as comprising four suspension means for mechanically coupling the mask to the faceplate, the suspension means being located one at each corner of the mask to permit the mask to flex about said diagonals and conform to the contour of the faceplate. All four of the suspension means have means effecting a predetermined spacing of the mask from the inner surface of the faceplate. Three of the four suspension means also effect an angularly rigid and precise coupling of the mask to the faceplate. The combination is characterized by each of the three suspension means comprising an integral modification of said faceplate inner surface which defines two angularly spaced, axially convergent engagement surface areas.

Abstract: A rimless faceplate is mounted on a shadow mask color selection device for a color television tube construction by indexing means establishing a unique positional relationship between the faceplate and the mask. An array of cavities on the inner surface of the plate interfit with the studs on mask mounting brackets to provide transverse positioning while the bracket surfaces extending outward from the studs provide abutting surfaces to the inner face of the faceplate adjacent its stud receiving cavities to establish faceplate-mask spacing. A glass funnel receives the mask in its divergent end with precise spacing of the mask from its seal edge. Portions of the mask mounting brackets are fitted into seats in the funnel which may be cavities or depressions in the seal edge to establish the spacing, particularly the depth of entry of the mask in the funnel.

Abstract: An electrode structure includes a pin that extends through a hole in a fragile substrate, such as a thin, glass plate, and makes contact with a conductive layer on one surface of the plate. The structure includes a first metallic adherent layer on that portion of the conductive layer and a second metal layer on the exposed surface of the first metal layer. The hole extends through the conductive layer and both of the metal layers. The first metal layer is adherent to the conductive layer and consists of iron, chromium, or nickel, for example, deposited on the conductive layer. The second metal layer is a fixative for the first layer and is wettable by soft solder. It consists of a noble metal from the group consisting of gold, silver, platinum and paladium. The pin has a head larger than the cross-section of the hole and a surface that is wettable by soft solder.

Abstract: This disclosure depicts a novel rectangular-type color cathode ray tube and a method of manufacturing such a tube which insures that a phosphor screen pattern deposited on the screen area of the tube faceplate is accurately referenced to the source of electron beams for the tube. The faceplate and the tube funnel have referencing means which define faceplate and funnel reference surfaces of such number and arrangement that the faceplate and the funnel are interlocked to prevent beyond-tolerance relative movement therebetween. In a preferred structure disclosed, the faceplate has internal referencing means in three corners. The funnel has in each of three corresponding corners a pair of spaced, inside funnel reference surfaces oriented to capture the associated faceplate referencing means.

Abstract: A color projection television receiver and projector having three color tubes mounted in fixed relation and in predetermined location relative to a screen for projecting three color pictures in registration thereon. Accurate registration of the pictures results from a projection tube structure adapted for accurate reproducability in production, whereby field adjustment is minimized. The tube structure employs a mounting barrel accurately suspended within the evacuated envelope and supporting a phosphorcoated target and a projection mirror. A Schmidt correction lens is mounted externally to the envelope of each tube.

Abstract: High voltage grounding strap including a terminal member with a plurality of resilient tines for providing electrical contact such as to the external Aquadag coating on a picture tube, a receptacle connector formed in the shape of an elongated flattened cylinder and having a flared open end for allowing easy insertion of a corresponding male connector formed on the terminal member. The grounding strap including a plastic sheath extending up to and covering said receptacle connector to minimize corona and arcing and the receptacle connector includes a locking means on its interior surface.

Abstract: In a color TV bulb formed with a panel, a peripheral panel skirt integral therewith, a funnel portion adapted to mate therewith, a frame and aperture mask adapted to be mounted in said frame and secured in spaced relation with the panel; a supporting structure for the aperture mask and frame including peripherally located outwardly extending spring lugs and spring clips attached to the frame respectively operative for xy orientation and Q spacing of the aperture mask. The panel skirt is formed with a selected number of V grooves located each for receiving a corresponding one of the spring lugs and a ledge face spaced away from the inside surface of the panel to cooperatively engage with and support the spring clips. A forward surface of the funnel engages the spring clips to urge same against the ledge face such that the xy orientation and Q spacing of the aperture mask are fixed relative to the panel. .Iadd.