Patents Assigned to GTE Sylvania Incorporated
  • Small phosphor area black matrix fabricating process
    Patent number: 4150990
    Abstract: A process for fabricating matrix cathode ray tubes having phosphor receiving areas smaller than the areas exposed through an apertured mask includes the steps of coating the inner surface of a viewing panel with a first film of photo-sensitive resist material; exposing the first film through an apertured mask to provide insolubilized areas of a given size; depositing a second film of resist material onto said first film; removing the second film, soluble areas of the first film, and portions of the insolubilized areas of the first film to provide insolubilized areas of the first film of a size smaller than said given size; overcoating with an opaque film, removing the overcoated insolubilized areas of a size smaller than the given size; and depositing phosphors in place of the removed insolubilized areas of a size smaller than said given size.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: April 24, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: John W. Stetz
  • Cathode support means in electron gun structure of a cathode ray tube
    Patent number: 4151441
    Abstract: Improved means are provided for supporting a thermionic cathode in a cathode ray tube electron gun structure. A dual-leg configurated wire component, evidencing minimal mass and low heat sink characteristics, is utilized to provide positive support for the cathode and promote rapid cathode warmup.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: April 24, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Peter G. Puhak
  • Cathode heater assembly for electron discharge device
    Patent number: 4151440
    Abstract: The titled assembly comprises a ceramic substrate having opposed surfaces bearing thereon discrete metallized patterns. One of the patterns serves as a base for an electron emissive material and the other serves as a heater.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: April 24, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: William E. Buescher
  • Apparatus and method of making filaments
    Patent number: 4150708
    Abstract: An improved apparatus and method for making solid filamentary elements from a pendant drop of a high melting point material (e.g. hafnium, zirconium). The improvement constitutes providing a protective layer in the form of a thin film on the circumferential edge of the casting wheel prior to engagement of the drop and release of the elements. The layer material serves to reduce heat flow from the drop material to the wheel as well as prohibit bonding of the drop material thereto. The preferred layer materials are aluminum, carbon (e.g. graphite), boron nitride, and borosilicate glass.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: April 24, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Robert J. Patton, Martin P. Schrank
  • Arc-resistant deflection yoke
    Patent number: 4151497
    Abstract: An arc-resistant deflection yoke for a cathode ray tube deflection system includes a core of magnetic material having a pair of axes with first and second deflection windings toroid-wound in mirror image relationship on opposite sides of one axis and third and fourth deflection windings toroid-wound in a continuous-wound relationship on opposite sides of the other axis. The arc-resistant deflection yoke is fabricated by a process of selecting a core, toroid-wrapping first and second windings on opposite sides of one axis in mirror image of one another and toroid-wrapping third and fourth windings on opposite sides of an opposite axis in continuous-wound relationship.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: April 24, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Joseph L. Hallett, Martin Fischman
  • Tie member for mounting cable on a fence
    Patent number: 4149298
    Abstract: A plastic tie member for mounting a transducer cable on a chain link fence comprises a flexible strap having two spaced apertured heads at one end arranged, when the member is tied, to snugly clamp the cable to a fence strand while maintaining them in a physically spaced relation. The effective space between the heads is substantially the same as the circumference of the cable so as to form a pocket, when the member is in the tied position, in which the cable snugly gripped with a predetermined constant force independent of the clamping force on the fence strand. This insures against excessive clamping forces on the cable, prevents damage to cable from burrs and the like on the fence strands, and maintains an efficient vibration-sensitive coupling between cable and fence.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: April 17, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Lawrence J. Forest
  • Integral lens cathode ray tube system
    Patent number: 4150320
    Abstract: An integral lens cathode ray tube system includes a cathode ray tube having an electron gun for providing a visual display on a substantially spherical-shaped viewing portion and a glass panel affixed to the viewing portion by a resin disposed therebetween and optically matched to the glass panel and viewing portion of the cathode ray tube.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: April 17, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Robert B. Mitchell, John P. O'Donnell, Harry R. Swank
  • Incandescent projection lamp with internal reflector having light defining opening therein
    Patent number: 4150316
    Abstract: An incandescent projection lamp which includes a reflector located within the lamp's envelope at an established distance from a biplanar filament structure. The lamp provides bidirectional light output with the reflector having an opening therein for defining the light output in one of the directions.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: April 17, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Robert E. Levin, Robert P. Bonazoli
  • Low mass, indirectly heated, fast warm-up heater-cathode assembly
    Patent number: 4150318
    Abstract: A substrate of substantially pure, hexagonal crystal, .alpha. alumina (sapphire) has a central hub and three radiating spokes. One surface of the substrate has a metallized cathode base thereon and the opposite surface is provided with a metallized heater. Electrical connection to the cathode base and heater are provided via the spokes, which are also appropriately metallized. A suitable electron emissive material is applied to the cathode base.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: April 17, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Donald R. Kerstetter
  • Incandescent lamp having embedded support means
    Patent number: 4149103
    Abstract: In a press-sealed single-ended tubular incandescent lamp, the support means thereof is embedded in the press seal and protrudes from the edge thereof, substantially orthogonal to the axis of the lamp.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: April 10, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Paul E. Gates, Stephen F. Kimball
  • Signal-dependent chrominance subcarrier filtering circuit
    Patent number: 4149181
    Abstract: A method and circuit for detecting and removing chrominance signal components from the luminance channel of a television receiver is shown. The luminance channel is separated into distinct subchannels, one of which has a filter providing attenuation at the chrominance subcarrier frequency. A detection circuit operates to select the output of the filtered subchannel whenever a chrominance subcarrier signal appears in the luminance channel. The detection circuit is sensitive to the phase relationship between the chrominance signal and a portion of the luminance signal and is therefore substantially immune to signals other than chrominance subcarriers, including high frequency components of the luminance signal.
    Type: Grant
    Filed: September 2, 1977
    Date of Patent: April 10, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Kenneth J. Burdick, Wilfred L. Hand, Arthur H. Klein, Charles B. Neal
  • Method of making fluorescent lamp
    Patent number: 4148935
    Abstract: A coating is deposited on the inner wall of a fluorescent lamp bulb from a suspension of particulate matter in a liquid vehicle of polyoxyethylene, hydroxyethylmethyl cellulose and an insolubilizing agent dissolved in water. After drying and low temperature heating to insolubilize the coating, another coating is deposited thereover from a similar aqueous vehicle.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: April 10, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Willy P. Schreurs
  • Burst gating signal generating circuit
    Patent number: 4149180
    Abstract: Disclosed herein are a circuit and a method for providing an appropriately-timed signal to the input of a chrominance burst gate. Horizontal synchronizing pulses are differentiated and clipped so that positive-going, exponentially decaying pulses are developed substantially coincidentally with the chrominance burst signal. The resultant pulses are then applied to one terminal of a switch. Horizontal flyback pulses are phase-delayed so that their peak amplitude occurs during the burst period. The phase-delayed pulses are applied to another terminal of the switch so that resultant pulses are shorted to ground except during a predetermined portion of the horizontal flyback period. As a result, a burst gating signal having a pulse width effectively equal to and coincident with the burst signal period is generated and applied to the input of the burst gate.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: April 10, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: John D. Lovely
  • Jamming circuit for television signals
    Patent number: 4148064
    Abstract: A circuit for transmitting a jamming signal for disruption of a television signal transmitted along a cable or other guided path toward a television receiver, the circuit having a first oscillator means providing an audio frequency signal which is used to frequency modulate a second oscillator means between the signal video and audio carrier frequencies inclusively and having a third oscillator means providing square-wave horizontal-sweep-frequency signal which is used with an amplitude-modulating means for amplitude-modulating the output of the second oscillator means to produce a jamming signal for directional coupling into the guided path for the purpose disrupting both audio and video content of the television signal.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: April 3, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Frederick F. Reed
  • Method of improving the output and maintenance of a fluorescent lamp
    Patent number: 4147816
    Abstract: In the manufacture of a fluorescent lamp having lead activated barium mesosilicate phosphor coated on the inner wall of the lamp envelope, ammonium chloride or other heat decomposable chlorides are added to the phosphor coating suspension in order to improve the initial output and the maintenance of the lamp.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: April 3, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Willy P. Schreurs
  • Hand-operable signal device using percussively-ignitable flashlamps
    Patent number: 4147497
    Abstract: A signal device which utilizes a plurality, e.g., ten, of percussively-ignitable flashlamps and is designed for single-handed operation. The device also comprises a body member which includes a handle portion and a support portion for having the lamps mounted thereon. A trigger moves in response to manual actuation between the handle and support portions in a reciprocal manner to in turn actuate the device's firing mechanism located within the support portion of the body. The firing mechanism, e.g. ratchet and helical torsion spring, in turn selectively fires each of the lamps in response to this reciprocal movement.
    Type: Grant
    Filed: January 4, 1977
    Date of Patent: April 3, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Thomas Haraden
  • Method of sealing alumina arc tube
    Patent number: 4147952
    Abstract: A niobium metal tube is sealed in the axial hole of a cylindrical alumina plug using a high temperature sealing glass and the plug is sealed in the end of an alumina arc tube.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: April 3, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Edward A. Webb, Francis B. Makar, Jr., Nikolaos Barakitis
  • Motor vehicle headlight having filling hole sealed with non-rigid material
    Patent number: 4146812
    Abstract: A motor vehicle headlight comprises a curved reflector having a lens bonded to the front thereof. A tungsten-halogen capsule is disposed within the reflector. A filling hole extends through the rear of the reflector, the hole being hermetically sealed by means of a nonrigid sealing material.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: March 27, 1979
    Assignee: GTE Sylvania Incorporated
    Inventor: Peter R. Gagnon
  • Molybdenum plasma spray powder, process for producing said powder, and coatings made therefrom
    Patent number: 4146388
    Abstract: Plasma spray powders of molybdenum particles containing at least 0.5 weight percent oxygen and obtained by reacting molybdenum particles with oxygen or oxides in a plasma, form plasma spray coatings exhibiting hardnesses comparable to flame sprayed coatings formed from molybdenum wire and plasma coatings of molybdenum powder containing hardening alloy powders. Such oxygen rich molybdenum powders may be used to form wear resistant coatings, such as for piston rings.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: March 27, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: William D. Lafferty, Richard F. Cheney, Richard H. Pierce
  • Fluorescent lamp power reducer
    Patent number: 4146820
    Abstract: A power reducer for a rapid start fluorescent lamp includes a time delay circuit that discontinues heater current to the lamp cathode after a predetermined time interval and places, at the same time, a current-reducing capacitor in series with the lamp.
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: March 27, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Carlo S. Bessone, William J. Roche