Patents Represented by Attorney Lawrence R. Kempton

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  • Flashlamp composition
    Patent number: 4105480
    Abstract: A multiple photoflash system is provided which employs a high voltage type flashlamp construction, including a shorting primer material. Said primer material is converted to a conductive residue upon ignition of flashlamp to provide a short circuit path between spaced apart inleads of the lamp. Further series connection of the individual lamps in the flashlamp system which are operatively associated with switching devices to provide an open circuit condition upon flashing of the associated lamps permits sequential flashing. The particular primer material which enables the flashlamp system to be operated in this manner comprises a solid mixture of a combustible metal fuel and an oxidizer for the fuel such as alkaline metal chlorates and perchlorates, and which further contains particular proportions of various combustion supporting oxides.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: August 8, 1978
    Assignee: General Electric Company
    Inventors: Vaughn C. Sterling, Lewis J. Schupp
  • Photoflash lamp array having conductive reflector
    Patent number: 4104706
    Abstract: A photoflash lamp array comprising a plurality of flash lamps having lead-in wires connected to a circuit board, and a reflector unit positioned between the lamps and the circuit board. The reflector unit is made of plastic having an electrically conductive reflecting coating on its front surface, and the reflector unit is shaped to provide openings so that the conductive coating is adjacent to or touching electrical ground areas of circuitry on the circuit board, whereby the reflector unit functions to dissipate electrostatic charges thus preventing accidental flashing of lamps.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: August 1, 1978
    Assignee: General Electric Company
    Inventors: James M. Hanson, Stanley S. Palagyi, Gerald W. Povall
  • Photoflash lamp array having shielded switching circuit
    Patent number: 4104705
    Abstract: A flash lamp array having a plurality of flash lamps positioned over a side of a circuit board having thereon circuitry for sequentially flashing the lamps. A metal shield, in the form of a sheet of metal foil or foil-covered paper, is positioned adjacent to the other side of the circuit board and is in contact with a common electrical run on the circuit board by means of a staple through the circuit board. Strips of radiation-sensitive plastic are positioned between the shield and the circuit board to function as electrical insulation, and also function as flash indicators by distorting due to radiation from an adjacent flashing lamp.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: August 1, 1978
    Assignee: General Electric Company
    Inventors: Victor A. Levand, Jr., William A. Lenkner
  • Cementless base incandescent lamp
    Patent number: 4103201
    Abstract: An incandescent lamp is disclosed in which the lamp mount is replaced with a mount which is attached to a molded glass disc having pins extending therethrough. The disc is attached to the bulb by way of a solder glass seal and the base is welded to the pins.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: July 25, 1978
    Assignee: General Electric Company
    Inventor: Frederick A. Mosby
  • Multiple flashlamp array
    Patent number: 4101953
    Abstract: A multiple photoflash lamp array is disclosed capable of producing a plurality of flashes for taking a plurality of flash pictures. The particular lamp construction includes a reflective unit having a plurality of adjacent reflectors or reflector cavities, each having a photoflash lamp mounted therein on a common base having a rigid molded plastic cover or shield which is light transmitting secured to said base and holding the entire assembly together. A butadiene styrene polymer is employed as the material of construction for said light transmitting cover means to provide better protection against shattering when the lamps are flashed than is obtained with the styrene homopolymer material now being used.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: July 18, 1978
    Assignee: General Electric Company
    Inventors: Robert M. Anderson, James M. Hanson
  • Lamp and socket assembly
    Patent number: 4100448
    Abstract: An improved lamp and socket assembly is disclosed in which a socket collar is mechanically secured to the panel or reflector when the lamp is used. The base of the lamp attaches to the collar as does the electrical connector. The combination enables a more repeatable alignment of the lamp in the panel or reflector. A compact assembly is achieved by using nested cylinders in the parts.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: July 11, 1978
    Assignee: General Electric Company
    Inventors: Russell W. Chipner, James C. Graff
  • Fluorescent lamp utilizing terbium-activated rare earth oxyhalide phosphor material
    Patent number: 4099089
    Abstract: Use of terbium-activated rare earth oxyhalide phosphor material in a high-loaded fluorescent lamp having an operating temperature range of approximately 100.degree. C or greater provides high efficiency emission. The phosphor material can be utilized alone or in combination with other suitable phosphor materials at the elevated operating temperatures to generate white-light composite emission. For white-light emission, the phosphor admixture further includes a narrow band red-emitting phosphor along with a narrow band blue-emitting phosphor in suitable portions.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: July 4, 1978
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Flash lamp array having shorting lamps
    Patent number: 4097220
    Abstract: A sequencing flash array having flash lamps which are short-circuited across their lead-in wires after flashing. The lamps contain primer material at the bases of their bulbs and bridging across the inner ends of the lead-in wires. The primer material is a type having a low impedance after flashing, and the inner end regions of the lead-in wires are shaped to hold the flashed primer residue in place.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventors: Paul T. Cote, Lewis J. Schupp
  • Arc discharge lamp including starting circuit
    Patent number: 4097777
    Abstract: A jacketed high pressure metal vapor discharge lamp comprising an arc tube having main electrodes at opposite ends and a starter electrode, has a resistor and a diode in series bridged across the main electrodes which are connected across a peaked lead ballast in operation. A second resistor connects the starting electrode to the remote main electrode. The circuit lowers the minimum open circuit voltage required from the ballast for reliable starting.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventor: Walter Bacharowski
  • Multiple flash array
    Patent number: 4093979
    Abstract: A multiple flash lamp array having an electrically conductive reflector unit positioned between the flash lamps and a circuit board. A radiation-actuated last-flash indicator switch is positioned on the circuit board behind the last lamp to be flashed and is connected between an electrical ground circuit run and another circuit run. An opening is provided through the reflector at the last-to-flash lamp, in alignment with the last-flash indicator switch, and the rear edge of the opening is shaped to contact the electrical ground circuit run adjacent to the last-flash indicator switch for electrically grounding the reflector.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: June 6, 1978
    Assignee: General Electric Company
    Inventors: Norman E. Kewley, Andrew Smetana
  • Stay-on lamp
    Patent number: 4093894
    Abstract: A lamp is described having an internal switch for keeping at least one filament incandescent for a predetermined time after an external switch indicates the user wishes to turn the lamp off.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: June 6, 1978
    Assignee: General Electric Company
    Inventor: Leroy G. Leighton
  • Fluorescent lamp unit for multiple installation
    Patent number: 4092562
    Abstract: A compact integral permanently assembled lamp unit comprising a fluorescent lamp, resistor ballast, starter means, and end connectors for connecting a plurality of lamps together.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: May 30, 1978
    Assignee: General Electric Company
    Inventor: John H. Campbell
  • Fused silica article having titania-silicate barrier zone
    Patent number: 4091163
    Abstract: A titania-silicate glass zone or layer is formed at the surface in fused silica by first applying a thick opaque polycrystalline titania powder coating to the silica and then fusing the coating into the silica at a high temperature. Such a zone reduces the ultraviolet transmission of the silica and also lowers its sodium ion conductivity. The zone may usefully be formed on the fused silica arc tubes of metal halide lamps in order to inhibit sodium loss and on other discharge lamps required to be ozone free.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: May 23, 1978
    Assignee: General Electric Company
    Inventor: Edward M. Clausen
  • Glass composition
    Patent number: 4089694
    Abstract: A CaO containing silicate glass composition which can further contain small amounts of lead oxide and barium oxide is generally useful for hermetically sealing the electrical in-leads of various electrical devices. The present glass has a composition range in percentages by weight of:______________________________________ Constituents Weight Percent ______________________________________ SiO.sub.2 65-75 Na.sub.2 O 9-13 K.sub.2 O 3-6 Al.sub.2 O.sub.3 1-4 CaO 4-8 BaO 0-4 PbO 0-6 Li.sub.2 O 0-2 ______________________________________along with minor amounts of incidental impurities, residual fluxes and refining agents.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: May 16, 1978
    Assignee: General Electric Company
    Inventors: George L. Thomas, Edward L. Woodall, Jr.
  • (Ba,Sr)F, (Cl,Br) : Eu.sup.+2 X-Ray image converters utilizing LaOBr (Tm,Tb) phosphors
    Patent number: 4088894
    Abstract: The performance characteristics of (Ba,Sr)F, (Cl,Br) : Eu.sup.+2 phosphors may be improved by combining these phosphors with particular rare earth oxyhalide phosphors. In the preferred embodiments, the latter phosphors have relatively small and well-formed crystalline particles which become interspersed with the larger crystalline particles of the (Ba,Sr)F, (Cl,Br) : Eu.sup.+2 phosphor.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: May 9, 1978
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Electrostatic coating of silica powders on incandescent bulbs
    Patent number: 4081709
    Abstract: An improved electrostatically deposited coating is obtained by controlling the particle size and resistivity of the silica powder.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: March 28, 1978
    Assignee: General Electric Company
    Inventors: Clifford B. Collins, William G. James
  • Switching devices for photoflash unit
    Patent number: 4080155
    Abstract: An improved static solid switching device is disclosed for activation by radiant energy when a flash lamp located adjacent thereto is flashed. The multiple flash lamp array having a plurality of lamps fired individually and in sequence for use with said improved static solid switching devices is further disclosed. The switches are prepared from compositions which include the presence of a non-conductive particulate solid to provide improvement in switch manufacture as well as switch operation.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: March 21, 1978
    Assignee: General Electric Company
    Inventor: Vaughn C. Sterling
  • Photoflash lamp
    Patent number: 4078881
    Abstract: An improved wire anvil member for a percussion ignitable type flash lamp is described having projection means to deflect hot primer particles upon ignition but which has openings permitting some of the hot primer particles to pass through for improved ignition of the principal combustible material contained in the lamp envelope. The present wire anvil can also be die-cast as an integral member utilizing commercially available zinc alloy materials.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: March 14, 1978
    Assignee: General Electric Company
    Inventors: Robert M. Anderson, Lewis J. Schupp, William H. Herrmann
  • Alumina coatings for mercury vapor lamps
    Patent number: 4079288
    Abstract: An improved mercury vapor lamp construction as described which includes an ultraviolet reflecting underlayer of alumina particles for the phosphor coating to enable reduction in the phosphor coating weight without accompanying reduction in the lamp lumen output. The alumina underlayer comprises spherical alumina particles that have been vapor-deposited in a certain particle size range to provide selective reflection of the ultraviolet radiation being emitted from the overlying phosphor coating. The alumina underlayer is deposited upon the interior surface of the lamp glass envelope and has been found generally useful in otherwise conventional high-pressure and low-pressure mercury vapor lamps.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: March 14, 1978
    Assignee: General Electric Company
    Inventors: Kenneth M. Maloney, Robert E. Clark
  • Chemically polished polycrystalline alumina material
    Patent number: 4079167
    Abstract: Increased optical transmission is provided for a body of light transmissive polycrystalline alumina body treated at elevated temperatures with a molten flux composition. A tube of the flux polished material which can be used as the light transmissive envelope for high intensity discharge lamps especially sodium vapor lamps, improves light output from the lamp as the result of increased in-line transmission for the treated envelope member. A method of chemically polishing polycrystalline alumina material in this manner is also disclosed.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: March 14, 1978
    Assignee: General Electric Company
    Inventors: Garland E. Scott, Jr., Michael K. Levenson