Patents Represented by Attorney James Theodosopoulos

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  • Surge arrester assembly
    Patent number: 4493003
    Abstract: A surge voltage arrester assembly for protection of communications lines from over voltage and excess current conditions includes a sealed cold cathode gas tube forming a primary arc gap and disposed within a cage member with an insulator member disposed between the gas tube and an electrical conductor forming a secondary arc gap sealed from contaminants, in parallel with the primary arc gap and affixed onto a cylindrical conductor by a retainer means.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: January 8, 1985
    Assignee: GTE Products Corporation
    Inventors: Nils P. Mickelson, Richard P. De LaChapelle
  • Coated phosphors, method for producing same and articles employing same
    Patent number: 4473634
    Abstract: The red and blue color cathode ray tube phosphors for color television are pigmented with a coating of an aqueous-insoluble silicate-based glass matrix containing pigment particles. When incorporated into a tridot color cathode ray tube, the contrast of the tube is improved. The coated particles are formed by dispersing the particles in a slurry with a silicate, the pigment particles and an optional wetting agent, and evaporating the slurry to dryness. The dried coated particles are then heated in order to insolubilize the glass matrix, and soluble ions are then removed by washing.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: September 25, 1984
    Assignee: GTE Products Corporation
    Inventors: Robert E. Dodds, Carl E. Landmesser, Henry B. Minnier, Harry O. Schulze
  • Triple pass ceramic heat recuperator
    Patent number: 4466482
    Abstract: A heat recuperator comprises a cross-flow ceramic core within a housing. The housing includes an inlet conduit and an outlet conduit for a gas to be heated. The housing also includes means for thrice passing said gas through the ceramic core in order to improve the diffusion of the gas through the core.
    Type: Grant
    Filed: November 27, 1981
    Date of Patent: August 21, 1984
    Assignee: GTE Products Corporation
    Inventors: Raymond E. Dorazio, William L. Mingos, Joseph J. Cleveland
  • Method for making sintered silicon nitride articles
    Patent number: 4462816
    Abstract: In the manufacture of sintered silicon nitride articles by hot isostatic pressing, multiple silicon nitride parts are encapsulated within a single capsule for the pressing operation. Suitable spacers placed between the parts ease separation thereof after sintering.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: July 31, 1984
    Assignee: GTE Products Corporation
    Inventors: Robert W. Wolfe, Joseph J. Cleveland
  • Photochemically machined cutting wheel
    Patent number: 4462724
    Abstract: A cutting wheel comprises a thin metal disk having an inner peripheral cutting edge. The cutting wheel is photochemically machined from a flat metal sheet and has locating holes therethrough the diameters of which are held to a very close tolerance.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: July 31, 1984
    Assignee: GTE Products Corporation
    Inventors: Robert E. Miettunen, Kenneth H. Shaner
  • Process for sintering silicon nitride articles
    Patent number: 4462818
    Abstract: In the manufacture of sintered silicon nitride articles by hot isostatic pressing, silicon nitride preforms are assembled in a stack with spacers between the preforms. A plurality of such stacks are inserted in a glass tube closed at one end. The glass is melted around each stack to encapsulate each stack in a single sealed capsule.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: July 31, 1984
    Assignee: GTE Products Corporation
    Inventors: Robert W. Wolfe, Joseph J. Cleveland
  • Method of preparing silicon nitride articles for sintering
    Patent number: 4462817
    Abstract: In the manufacture of sintered silicon nitride articles by hot isostatic pressing, silicon nitride preforms are assembled in a stack with spacers between the preforms. The stack is completely enveloped in refractory metal foil and then encapsulated within a single capsule for the pressing operation.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: July 31, 1984
    Assignee: GTE Products Corporation
    Inventors: Robert W. Wolfe, Joseph J. Cleveland
  • Fluorescent lamp having double phosphor layer
    Patent number: 4431941
    Abstract: A fluorescent lamp has two phosphor layers, the phosphor of the first layer being less expensive than the phosphor of the second layer. The second phosphor layer improves the lamp efficiency.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: February 14, 1984
    Assignee: GTE Products Corporation
    Inventors: Joseph A. Roy, Fred R. Taubner
  • Tungsten halogen lamp containing cyanogen
    Patent number: 4415834
    Abstract: The gaseous filling of a tungsten halogen lamp includes cyanogen and a halogen or halide.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: November 15, 1983
    Assignee: GTE Products Corporation
    Inventor: James P. Keenan
  • Diesel fuel heater
    Patent number: 4406785
    Abstract: The diesel fuel heater is PTC energized and is for heating gelled diesel fuel to a liquid state so as to improve engine performance particularly for engine starting. The heater is compact and is preferably integrated in a fuel filter housing. The heater basically comprises a diesel fuel heater housing and a PTC mounting plate, both of which are mounted in the fuel filter housing over the filter element. A preferably annular fuel flow channel is defined between the heater housing and PTC mounting plate with the diesel fuel adapted to pass directly over the PTC thermistors as the fuel flows from housing inlet to the filter element. A spring biasing contact is disposed intermediate the heater housing and PTC mounting plate to retain the PTC thermistors in place.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: September 27, 1983
    Assignee: GTE Products Corporation
    Inventor: David A. Siefer
  • Projection lamp comprising single ended arc discharge lamp and an interference filter
    Patent number: 4386292
    Abstract: A projection lamp comprises a single-ended metal halide arc discharge lamp disposed within a curved reflector and an interference filter disposed in front of the reflector, the filter being highly transmissive of visible light and reflective of radiation for which the metal halide, in molten salt form, is highly absorptive.
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: May 31, 1983
    Assignee: GTE Products Corporation
    Inventors: Harold L. Rothwell, William M. Keeffe, George J. English
  • Metal halide arc discharge lamp having shielded electrode
    Patent number: 4383197
    Abstract: A shield is disposed about the electrode of a metal halide arc discharge lamp in order to improve lamp performance. The construction and location of the shield are such as to not lower the cold-spot temperature of the arc tube.
    Type: Grant
    Filed: November 2, 1978
    Date of Patent: May 10, 1983
    Assignee: GTE Products Corporation
    Inventors: W. Calvin Gungle, William M. Keeffe, Dale E. Work
  • Arc discharge device containing HG196
    Patent number: 4379252
    Abstract: In a mercury-containing arc discharge device for converting electrical energy into resonance radiation, the isotopic distribution of the mercury in the device is altered from that of natural mercury so as to reduce imprisonment time of resonance radiation and thereby increase the efficiency of conversion of electrical energy into resonance radiation.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: April 5, 1983
    Assignee: GTE Products Corporation
    Inventors: Dale E. Work, Stephen G. Johnson
  • Infrared photoconductor for electrophotography of a copper activated mercury containing cadmium selenide telluride
    Patent number: 4374917
    Abstract: A copper-activated mercury-containing cadmium selenide telluride infrared-responsive photoconductor.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: February 22, 1983
    Assignee: GTE Products Corporation
    Inventor: Sixdeniel Faria
  • Ceramic heat recuperative structure and assembly
    Patent number: 4362209
    Abstract: A heat recuperative assembly includes a cross-flow ceramic core structure of stacked ribbed layers, the ribs forming channels for the passage of heat transfer fluids, the layers sealed by ceramic cement filled in the outermost channels of each layer. In addition, the ribs adjacent the outermost ribs are more closely spaced in order to provide greater contact area for sealing.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: December 7, 1982
    Assignee: GTE Products Corporation
    Inventor: Joseph J. Cleveland
  • Comparator mask for aperture measuring apparatus
    Patent number: 4349278
    Abstract: A comparator mask for use in apparatus for measuring aperture size of apertured material includes a light transparent section and at least one other section having alternate light transparent and opaque sectors whereby the comparator mask overlays the apertured material to provide an area of light transmission utilized to determine the dimensions of the aperture of the apertured material.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: September 14, 1982
    Assignee: GTE Products Corporation
    Inventors: Kenneth French, Alfred Piorkow
  • Method of making high purity calcium hydrogen phosphate dihydrate
    Patent number: 4349518
    Abstract: A continuous process for manufacture of brushite, CaHPO.sub.4.2H.sub.2 O, is disclosed. Calcium and phosphate ions are mixed in a container to produce brushite precipitate, which is then continuously introduced into second and third containers where the pH is raised to reduce brushite solubility. The brushite is then filtered in a continuous process, washed, refiltered, and rewashed before being converted to anhydrous calcium hydrogen phosphate.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: September 14, 1982
    Assignee: GTE Products Corporation
    Inventors: Robert A. Long, Albert K. Fan
  • Adaptor for high intensity arc discharge lamps
    Patent number: 4334172
    Abstract: An adaptor for use with incandescent lamp sockets includes a circuit for igniting a high intensity arc discharge lamp and limiting the current flow thereto. The adaptor includes means for connecting to a source of electrical power and means for connecting to an incandescent lamp socket.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: June 8, 1982
    Assignee: GTE Products Corporation
    Inventors: Elliott F. Wyner, Orville R. Burr, Robert L. Garrison
  • Glass enclosed three lead circuit breaker
    Patent number: 4334209
    Abstract: A circuit breaker comprises a hermetically sealed glass envelope having three lead-in wires extending therethrough. Within the envelope, a stationary contact is fastened to one of the wires, a thermostatic element to another of the wires, and a heater to the third wire. The circuit breaker permits simultaneous protection of two windings of a motor, for example, the main winding and the start winding. The thermostatic element provides protection for one of the windings and the combination of the thermostatic element and heater provides protection for the other.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: June 8, 1982
    Assignee: GTE Products Corporation
    Inventor: Philip J. Dennis
  • High pressure sodium lamp containing barium getter
    Patent number: 4333032
    Abstract: A high pressure sodium lamp comprises an elongated arc tube within an evacuated outer jacket, the arc tube containing a fill including sodium and mercury. A barium getter film is disposed on the inner jacket wall at one end thereof. The film is longitudinally spaced more than 1 cm away from the end of the arc tube in order to reduce photoelectron emission from the barium which can cause sodium migration from the arc tube.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: June 1, 1982
    Assignee: GTE Products Corporation
    Inventors: Elliot F. Wyner, John J. Gutta, Richard A. Parrott