Abstract: A method of testing a panel assembly of a color cathode-ray tube, prior to sealing a faceplate panel of the assembly to a funnel section of the tube, detects defects in the assembly including dents and misregistration of an apertured shadow mask mounted therein adjacent to a luminescent screen disposed on the faceplate panel. The screen is exposed to radiation passed through apertures in the mask including ultraviolet but substantially excluding visible radiation, and examined for variations in color from light emitted by the screen, whereby the variations in color are indicative of defects in the assembly.

Abstract: A getter flasher has a movable, self-centering coil enclosure including an rf induction coil adapted to heat a getter container disposed within a cathode-ray tube and adjacent to a funnellike surface thereof. The coil enclosure is supported by a holder and has a spring coupled thereto for moving the coil enclosure in a direction away from the holder. A surface of the coil enclosure has a contour substantially similar to a portion of the funnellike surface of the tube.

Abstract: The perimeter of an object is detected using a CCD. When a pixel is dark a right detection turn is taken and when a pixel is light a left detection turn is taken. When a transition from light to dark or from dark to light occurs the address of the light pixel is recorded to identify the light pixel as a perimeter pixel.

Abstract: A kinescope envelope which rests on a fixture is positioned at a location where the envelope size is determined. The envelope is removed from the fixture and positioned at a preselected position where the panel-funnel offset is determined. The size and offset of the envelope are provided to a controller and the offset is compared to a stored designed offset to determine an offset difference. The offset difference is compared to an offset tolerance and a reject signal is provided when the offset tolerance is exceeded. The reject signal is used to place a reject mark on the envelope and to dispense an identification article onto the potentially defective fixture.

Abstract: A sealing fixture for aligning the sealing edges of a funnel and a panel of a kinescope during fritting is tilted so that a funnel placed in the fixture is gravity moved toward a corner of the fixture. All contact between the funnel and the fixture is made through rotatable referencing elements so that gravity accurately positions the funnel in the fixture.

Abstract: A hybrid uses stubs to provide 90 degrees of phase shift between output lines for feeding a circularly polarized antenna. Capacitive and inductive stubs have low and high characteristic impedances for broad bandwidth. The stubs can be located in the output lines for compactness, or in a T-section between an input line and the output lines, for compactness, to minimize undesired phase shift, and for ease of connection. The hybrid can include one quarter wave transformers having a characteristic impedance of geometric mean of the hybrid and antenna for improved axial ratio.

Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. The improvement comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. Because of the presence of the lens, the images of the line light source projected through the slits of the mask onto the photosensitive material at locations off the major and minor axes of the panel are rotated toward parallelism with the minor axis thereby resulting in exposure of straight smooth lines on the photosensitive material.

Abstract: A tensioning band includes a plurality of notches in the free end. Formed in the notches are tabs which extend between the free end and the tensioned loop to prevent the loop from moving against the article being tensioned and thereby relaxing the tension.

Abstract: A device for accurately positioning and orienting a kinescope at a preselected position includes a horizontally moveable but vertically fixed carriage which transports the envelope from a first loading position to a preselected position. A second carriage, which is vertically moveable and horizontally fixed, is centered at the preselected position. The second carriage normally is beneath the horizontally moveable carriage and is raised to lift the envelope from the horizontally moveable carriage. Neck centering members are coupled to the vertically moveable carriage and are boomerang shaped to include oppositely facing internally curved surfaces. The curved surfaces urge the neck of the envelope toward the preselected position irrespective of the tilt of the neck and assure that the neck is centered at the preselected position and that the longitudinal axis of the envelope is parallel to the vertical axis.

Abstract: A CRT comprising an evacuated envelope having an electrically-insulating neck and a beaded electron-gun mount assembly in the neck. Portions of the surfaces of the beads facing the inner surface of the neck carry electrically-conducting coatings for suppressing arcing during the operation of the tube. The coatings and the claws of the electrodes embedded in the beads are positioned to minimize erosion of the patches during electrical processing of the electrodes.

Abstract: A device for maintaining a moveable faceplate panel a constant distance from a stationary point includes a fixed caddy. The caddy has longitudinally parallel fixed rails which curve in the same direction as one curvature of the panel. A moveable caddy rides on the fixed rails and includes additional rails which curve in the same direction as the other curvature of the panel. A panel carrier rides on the additional rails whereby the surface of the panel remains the constant distance from the stationary point and as movement occurs along either or both sets of rails.

Abstract: The method for sealing a glass stem wafer into the neck of a CRT has a plurality of burner tips disposed completely around the neck. The burner tips are angled such as to create rotating hot gases around the neck. This eliminates the need to rotate the CRT bulb, the wafer or the burner tips, to achieve a uniform seal.

Abstract: The operability of the connecting sockets of a kinescope aging line is verified by applying the aging voltages through ammeters. The current plots are side-by-side whereby low current plots for both voltages indicate an empty carrier while a low current for only one of the plots indicates a defective socket.

Abstract: A system for measuring the average area of apertures in an opaque member scans a large number of lines across the apertures in orthogonal directions. The width of two apertures are measured to obtain an average width. The lengths of two apertures are measured to obtain an average length. The average width and length are multiplied to obtain an average area. The width and length measurements are not necessarily from the same two apertures within the member.

Abstract: A heater and support structure for a line cathode includes heater electrodes and an S-shaped cathode support member arranged between the heater electrodes. The heater electrodes and the S-shaped support member have a higher resistance than the cathode and thus heat flows into the cathode to compensate for heat radiation losses and the support compensates for thermal expansion to retain the cathode at a substantially constant position.

Abstract: A system for the in press measurement of the thickness of a workpiece includes a force transducer and a displacement transducer. The force transducer is used to detect the contact between the forming tool and the workpiece. The output of the displacement transducer is continually read and recorded at the instant the force transducer indicates the contact between the forming tool and the workpiece. The output of the displacement transducer is correlated to known thicknesses and thus is indicative of the thickness of the unknown specimen.

Abstract: A system for inspecting images projected onto a charge coupled device (CCD) compares the image cast onto the CCD by an object to be inspected with an optimum reference image to identify and locate faults in the object being inspected, or to modify the image to match the reference.

Abstract: A cathode for a cathodoluminescent display device includes a plurality of low coefficient of expansion support columns arranged in a substantially parallel spaced relationship, a resistive cathode heater member extends between and is permanently affixed to the support columns. An electron emissive coating is on a portion of the cathode heater member between the columns.

Abstract: An improved color picture tube according to the invention includes an evacuated envelope enclosing an apertured mask attached to a frame which are suspended in relation to a cathodoluminescent screen by novel support means. The tube also includes an electron gun for forming a plurality of electron beams and directing the beams through the mask to the screen. An axis passing through the center of the electron gun and the center of the screen is the longitudinal axis of the tube. The screen also includes a major axis and a minor axis which are perpendicular to each other and perpendicular to the longitudinal axis. The support means includes a plurality of studs embedded in the envelope and spaced around the frame and a plurality of springs. Each spring has an aperture at one end engaged with one of the studs and each spring is attached at the other end to the frame.

Abstract: A beam guide assembly for a flat panel display device includes a plurality of meshes arranged in a spaced parallel relationship. Insulative supports permanently retain the meshes in a desired spaced relationship. Shields are arranged between the various meshes to shield the beam guide assembly from external electric fields and to prevent the insulative supports from being charged by stray electrons and deleteriously effecting the paths of the electron beams.