Patents Represented by Attorney T. H. Magee
  • Patent number: 4812708
    Abstract: A thin cathode-ray tube includes a back section having a surface boundary substantially symmetrical in shape to that of a faceplate panel sealed thereto, the back section suppporting a mount which includes an electron gun disposed within the symmetrical boundary.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: March 14, 1989
    Assignee: RCA Licensing Corp.
    Inventor: Kern K. N. Chang
  • Patent number: 4812130
    Abstract: A printed circuit board has a conductive terminal mounted in an aperture extending therethrough. The terminal has a shoulder portion, adjacent a side surface of the terminal, which contacts one surface of the board adjacent the aperture, and a bottom portion which flares outward to contact a conductive coating disposed, adjacent the aperture, on the opposite surface of the board. The bottom portion is rolled over sufficiently to allow a distal end surface of the bottom portion, adjacent the side surface, to contact the conductive coating at an orientation wherein the distal end surface is substantially parallel to the coating.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: March 14, 1989
    Assignee: RCA Licensing Corp.
    Inventors: Raymond A. Altenschulte, Glen M. Grabow
  • Patent number: 4799778
    Abstract: The Fresnel lens concentrator is formed by a specially designed Fresnel lens and a solar cell located on the axis of the lens at its focal plane. The lens is designed so that its central facets project the light from the sun towards the outer periphery of the cell and facets progressively toward the periphery of the lens project light progressively toward the center of the cell to obtain a uniform distribution of light on the cell. Adjacent groups of facets of the lens project the light alternately in front and beyond the cell to maintain a constant light intensity for a certain depth of focus of the lens.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: January 24, 1989
    Assignee: General Electric Company
    Inventor: Robert W. Jebens
  • Patent number: 4793845
    Abstract: A method for heat sealing an electron gun mount, having a glass stem, into a neck of a cathode-ray tube includes a mount socket for supporting the mount within the neck and a plurality of burners for applying heat to the outside of the neck proximate the stem. The neck softens, thins and then seals to the stem, causing excess neck material that is lower than the stem, known as cullet, to be cut off. Prior to applying heat, a sleeve is disposed around the mount socket within the neck adjacent to the cullet, with a clearance between the sleeve and both the socket and the neck. A vibrating coil is attached to the sleeve for vibrating the sleeve while applying heat to the outside of the neck.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: December 27, 1988
    Assignee: RCA Licensing Corporation
    Inventors: Emil V. Fitzke, Michael A. Colacello, Jack F. Otto
  • Patent number: 4782376
    Abstract: A photovoltaic device having an increased open circuit voltage includes a body of semiconductor material between layers of opposite conductivity type, one of which has a wide bandgap energy and through which light enters the device. The body includes a first region closest to the wide bandgap layer and a second region with the bandgap energy of the first region being greater than that of the second region and less than or equal to that of the wide bandgap layer.
    Type: Grant
    Filed: September 21, 1983
    Date of Patent: November 1, 1988
    Assignee: General Electric Company
    Inventor: Anthony W. Catalano
  • Patent number: 4749385
    Abstract: A method of providing clean air to a workpiece comprises positioning the workpiece adjacent to a first opening in a conduit. The conduit includes a central segment and a peripheral segment having, respectively, the first opening and a second opening disposed at opposite ends of the conduit. The peripheral segment surrounds the central segment such that the first opening is substantially coplanar with the second opening. A laminar flow of air is created through the conduit in a direction away from the second opening and toward the first opening. The air flow is filtered through a HEPA filter supported within the conduit.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: June 7, 1988
    Assignee: RCA Licensing Corporation
    Inventors: Glenn W. Brunner, Samuel Pearlman, Randall E. McCoy, Jordan R. Nelson
  • Patent number: 4748371
    Abstract: A cathode-ray tube includes a shadow mask having an array of apertures mounted adjacent a substantially rectangular faceplate panel with curvature along major and minor axes orthogonal to each other and to a central longitudinal axis passing through the center of the faceplate panel. The shadow mask has a border of varying width disposed between the perimeter of the apertured array and a bend line adjoining a peripheral mask skirt which substantially parallels the central axis and is supported by a shadow-mask frame oriented orthogonally to the central axis. The width of the border is narrow at the major axis, being no greater than five percent of the distance from the minor axis to the bend line along the major axis.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: May 31, 1988
    Assignee: RCA Licensing Corporation
    Inventor: Richard C. Bauder
  • Patent number: 4748330
    Abstract: A method for measuring spaces in a periodic matrix having a period including a plurality of spaces and areas therebetween includes placing the matrix between a light source and an array of pixels for receiving the light shadow image for the matrix. A plurality of image lines from the matrix are scanned across the array and signals are produced representative of the spaces and areas therebetween, which signals are converted into data values and transmitted to means for storing the data values for each of the scan lines as a row and for successive scan lines as columns. Selected data values in predetermined groups of columns, representing corresponding nonadjacent spaces of the periodic matrix, are added to obtain a total for each group. The total for each group is divided by the number of selected data values in that group. The average data value for each group is multiplied by a linear value representing the average length of each pixel to obtain the average space length for each group.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: May 31, 1988
    Assignee: RCA Licensing Corporation
    Inventor: Frank S. Krufka
  • Patent number: 4742384
    Abstract: A technique for passivating a PN junction adjacent a surface of a semiconductor substrate comprises coating the area of the surface adjacent the PN junction with a layer of hydrogenated amorphous silicon containing between about 5 and about 50 atomic percent of hydrogen.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: May 3, 1988
    Assignee: RCA Corporation
    Inventors: Jacques I. Pankove, Ming L. Tarng
  • Patent number: 4740248
    Abstract: An apparatus and method for cleaning a lens system utilizes a rotating turntable that sequentially moves a plurality of lenses parallel to a shielding plate from a preexposed position to an exposed position located adjacent an aperture in the shielding plate. The apparatus includes a first manifold for directing a first flow of gas across a surface of a lens located at the preexposed position, and a second manifold for directing a second flow of gas across a surface of a lens located at the exposed position. First and second vacuum nozzles remove, respectively, airborne particles within the first and second gas flows. An additional nozzle mounted adjacent the aperture provides an ionized gas.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: April 26, 1988
    Assignee: RCA Corporation
    Inventors: Dennis E. Thro, Mort J. Nierenberg
  • Patent number: 4723979
    Abstract: A method and apparatus for heat sealing an electron gun mount, having a glass stem, into a neck of a cathode-ray tube includes a mount socket for supporting the mount within the neck and a plurality of burners for applying heat to the outside of the neck proximate the stem. The neck softens, thins and then seals to the stem, causing excess neck material that is lower than the stem, known as cullet, to be cut off. Prior to applying heat, a sleeve is disposed around the mount socket within the neck adjacent to the cullet, with a clearance between the sleeve and both the socket and the neck. A vibrating coil is attached to the sleeve for vibrating the sleeve while applying heat to the outside of the neck.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: February 9, 1988
    Assignee: RCA Corporation
    Inventors: Emil V. Fitzke, Michael A. Colacello, Jack F. Otto
  • Patent number: 4719787
    Abstract: An apparatus for forming a shadow mask from a mask blank includes a punch having a convex surface, a pad having a complementary concave surface, and upper and lower dies having openings therein for receiving the punch and the pad, respectively. Each die also has a complementary nonplanar surface adjacent the opening for clamping the mask blank. Each die surface has a surface contour that substantially matches the extended surface contour of the mask blank when the mask blank lies against the inner edge of the lower die surface, so that wrinkling does not occur when the mask blank is clamped between the upper and lower dies.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: January 19, 1988
    Assignee: RCA Corporation
    Inventor: Frank R. Ragland, Jr.
  • Patent number: 4720282
    Abstract: A method for holding a cathode-ray tube in a fixed position during processing utilizes mounting lugs attached to the tube. The apparatus includes a platform having a plurality of legs positioned to support, respectively, the ends of the mounting lugs. Each of the legs has a recess therein aligned with an aperture in the respective lug end. Each lug is secured to the respective leg by a clamp, pivotally attached to each leg, which projects through the aperture into the respective recess when pivoted.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: January 19, 1988
    Assignee: RCA Corporation
    Inventors: Thomas L. Chase, Kenneth A. Long
  • Patent number: 4717955
    Abstract: A RAM (Random Access Memory) interface control circuit is used for measuring spaces in a periodic matrix by controlling a RAM memory circuit coupled between a photodetector array interface circuit and a computer. A plurality of light sources simultaneously illuminate the matrix with light at a plurality of discrete locations. A plurality of linear photodiode arrays simultaneously receive the respective light/shadow images from the matrix at the discrete locations, and associated control and quantizer circuits produce signals representative of the spaces and areas therebetween. RETICON interface circuits are coupled, respectively, to the control and quantizer circuits for simultaneously converting the signals for each location into data values and transmitting the data values in parallel to respective RAMs. RAM interface control circuits are coupled, respectively, to the RAMs for sequentially addressing the respective RAMs for seriatim transfer of the data values to the computer.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: January 5, 1988
    Assignee: RCA Corporation
    Inventor: Frank S. Krufka
  • Patent number: 4703396
    Abstract: A latch for securing a printed circuit board adjacent one side of a television chassis wall comprises a T-shaped tongue having a stem connected at one end to the bottom of a plastic body, the other end of the stem adjoining a crossbar. The latch also includes a U-shaped groove disposed adjacent to the top of the body along a major surface thereof for receiving an edge of the printed circuit board. The chassis wall has a neck defined by two shoulders spaced apart to support, respectively, L-shaped arms connected to each side of the body at the bottom thereof. The tongue passes through a T-shaped aperture in the wall beneath the neck such that the crossbar contacts the side of the chassis wall opposite the one side, the aperture being shaped to allow the crossbar to pass therethrough before making contact with the opposite side of the chassis wall.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: October 27, 1987
    Assignee: RCA Corporation
    Inventor: James D. Fletcher
  • Patent number: 4695045
    Abstract: An apparatus and method for holding a cathode-ray tube in a fixed position during processing utilizes mounting lugs attached to the tube. The apparatus includes a platform having a plurality of legs positioned to support, respectively, the ends of the mounting lugs. Each of the legs has a recess therein aligned with an aperture in the respective lug end. Each lug is secured to the respective leg by a clamp, pivotally attached to each leg, which projects through the aperture into the respective recess when pivoted.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: September 22, 1987
    Assignee: RCA Corporation
    Inventors: Thomas L. Chase, Kenneth A. Long
  • Patent number: 4694216
    Abstract: A cathode-ray tube has a faceplate panel joined to a funnel thereof along a sidewall of the panel, and has an internal magnetic shield disposed therein proximate an inner surface of the funnel and connected along one end thereof to a back portion of a shadow-mask frame oriented orthogonally to a central axis of the tube and supported adjacent the sidewall. An apertured shadow mask is connected along an edge thereof to a front portion of the shadow-mask frame opposite the back portion. Along the direction of the central axis, the one end of the magnetic shield overlaps the corresponding edge of the shadow mask around substantially all of the shadow-mask frame.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: September 15, 1987
    Assignee: RCA Corporation
    Inventor: Albert M. Morrell
  • Patent number: 4684982
    Abstract: A system for measuring spaces in a periodic matrix includes a plurality of light sources for simultaneously illuminating the matrix with light at a plurality of discrete locations. A plurality of linear photodiode arrays simultaneously receive the respective light/shadow images from the matrix at the discrete locations, and associated control and quantizer circuits produce signals representative of the spaces and areas therebetween. RETICON interface circuits are coupled, respectively, to the control and quantizer circuits for simultaneously converting the signals for each location into data values and transmitting the data values in parallel to respective RAMs. RAM interface control circuits are coupled, respectively, to the RAMs for sequentially addressing the respective RAMs for seriatim transfer of the data values to a computer.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: August 4, 1987
    Assignee: RCA Corporation
    Inventor: Frank S. Krufka
  • Patent number: 4670686
    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.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: June 2, 1987
    Assignee: RCA Corporation
    Inventors: Raymond L. Muenkel, Raymond E. Keller
  • Patent number: 4665429
    Abstract: A photodetector array interface circuit includes a pixel counter circuit having a plurality of sequentially numbered counters for counting pulses in a pixel oscillator signal, and a pixel counter gating circuit coupled to the pixel counter circuit for receiving both the pixel oscillator signal and a digital video signal and sequentially selecting the counters to receive the pixel oscillator signal such that the next sequential counter receives the pixel oscillator signal whenever the digital video signal changes. The interface circuit further comprises circuitry for sequentially reading the counters such that a particular counter is read only when the next sequential counter has received the pixel oscillator signal.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: May 12, 1987
    Assignee: RCA Corporation
    Inventor: Frank S. Krufka