Patents Represented by Attorney John F. McDevitt

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  • Flash lamp array circuit with improved fuse means
    Patent number: 4375955
    Abstract: A flash lamp array circuit having radiation-sensitive switches and fuse elements being connected in the conductive carbon ink circuit pattern wherein each of said fuse elements comprises a plurality of spaced apart strips to provide more reliable thermal decomposition and increased electrical conductivity.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: March 8, 1983
    Assignee: General Electric Company
    Inventors: Edward J. Collins, Mary E. Suster
  • X-Ray intensifying screen
    Patent number: 4374905
    Abstract: Improved performance of rare earth oxyhalide phosphors in x-ray image intensifying screens may be realized by admixing a small but effective amount of inorganic salts such as MgSO.sub.4 or ZnSO.sub.4 with the phosphor prior to the preparation of the screen. It is believed that H+ and SO.sub.4 =ions are present in a protective surface film surrounding each phosphor particle to help preserve the original emission brightness of the phosphor when exposed to humidity as well as reduce attack by volatile organic components which migrate from an associated photographic film.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: February 22, 1983
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Plastic PAR lamp construction
    Patent number: 4372794
    Abstract: An improved plastic reflector member for a parabolic aluminized reflector (PAR) lamp is disclosed and, in particular, use of said improved plastic reflector member for an all plastic PAR lamp or a PAR lamp which uses said improved reflector member. Said improved plastic reflector member utilizes a variable thickness wall member to form the parabolic shaped cavity wherein the wall thickness is sufficiently greater in the apex region of said parabolic cavity than in the adjoining wall region to avoid mechanical and heat distortion.
    Type: Grant
    Filed: June 18, 1981
    Date of Patent: February 8, 1983
    Assignee: General Electric Company
    Inventors: Irving Bradley, Vincent Vodicka
  • X-Ray intensifying screen
    Patent number: 4360571
    Abstract: Improved performance of rare earth oxyhalide phosphors in x-ray image intensifying screens may be realized by admixing a small but effective amount of certain fatty acids and fatty acid derivative with the phosphor prior to the preparation of the screen. Alternately, the phosphor powder can be washed with a liquid dispersion or solution of said additives as an equivalent means of providing improved moisture resistance as well as preserving the original emission brightness of the adhesively bonded material when used in x-ray screens.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: November 23, 1982
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Frit glass composition
    Patent number: 4359536
    Abstract: A novel frit glass composition is disclosed which is particularly useful to apply color coatings to the soda-lime glass envelopes of incandescent lamps. Specifically, the present glass frit can be combined with various inorganic coloring pigments to produce a colored coating when fired on the surface of the lamp glass envelope. The glass frit is a composition expressed in terms of weight percent, as calculated on the oxide basis, as follows:______________________________________ ZnO 25-31 SiO.sub.2 12-20 B.sub.2 O.sub.3 19-35 Al.sub.2 O.sub.3 1-4 Na.sub.2 O 5-10 CaO 7-9 BaO 2-6 ZrO.sub.2 0.5-4 F 1-2 K.sub.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: November 16, 1982
    Assignee: General Electric Company
    Inventors: William A. Graff, Jaroslaw Kohut
  • Fluorescent lamp utilizing phosphor combination
    Patent number: 4357559
    Abstract: A fluorescent lamp construction is described utilizing a particular combination of two different phosphor materials in order to produce more efficient emission of white color light and whose color temperature can be controlled. The particular phosphor combination can be utilized as a blended mixture; and the color point of the lamp emission can be adjusted to approximate black body radiation emission such as incandescent lamp emission with negligible loss in optimum luminous efficacy.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: November 2, 1982
    Assignee: General Electric Company
    Inventor: William W. Piper
  • Refractory metal coating method
    Patent number: 4357365
    Abstract: A continuous wire coating method is described which features a reaction chamber wherein a volatilized refractory metal compound is thermally decomposed to deposit said refractory metal as a coating on a refractory metal wire during passage through said reaction chamber. A substantially uniform thickness coating of the refractory metal is deposited in passing the refractory metal wire through said reaction chamber in a substantially vertical direction. The nature of said coating substantially precludes any subsequent thermal migration of the refractory metal in the wire core.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: November 2, 1982
    Assignee: General Electric Company
    Inventor: Lewis V. McCarty
  • Plastic PAR lamp construction with tapered reinforcement
    Patent number: 4344120
    Abstract: An improved plastic reflector member for a parabolic aluminized reflector (PAR) lamp is disclosed and, in particular, the use of said improved plastic reflector member for an all plastic PAR lamp or a PAR lamp which uses said improved reflector member. Said improved plastic reflector member utilizes a variable thickness wall member to form the parabolic shaped cavity wherein the wall thickness of its planar walls is sufficiently greater in the rim sealing region than in the adjoining wall region of said parabolic cavity to avoid mechanical and heat distortion.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: August 10, 1982
    Assignee: General Electric Company
    Inventors: Irving Bradley, James M. Hanson
  • Glass to nickel-iron alloy seal
    Patent number: 4342553
    Abstract: A range of borosilicate glass compositions which are capable of sealing effectively to nickel iron alloys containing up to approximately 52% nickel to form a hermetic seal resistant to thermal shock breakage. The glass is in the composition range percent by weight of:SiO.sub.2 : 55-66Al.sub.2 O.sub.3 : 4.5-10Na.sub.2 O: 0-4K.sub.2 O: 3.5-7B.sub.2 O.sub.3 : 19.0-26.0TiO.sub.
    Type: Grant
    Filed: September 29, 1981
    Date of Patent: August 3, 1982
    Assignee: General Electric Company
    Inventors: William A. Graff, George L. Thomas
  • Internal shunt for series connected lamps
    Patent number: 4340841
    Abstract: An improved operation shunt for series connected incandescent-type lamps is disclosed utilizing a novel shunt material composition comprising an admixture of conductive metal particulates, an inorganic binder, and conductive non-metallic particulates and which is adhesively bonded to an insulative bead member interconnecting the spaced apart lamp inleads.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: July 20, 1982
    Assignee: General Electric Company
    Inventor: Lewis J. Schupp
  • Lamp assembly method
    Patent number: 4338708
    Abstract: An improved sealing means is provided for a sealed prefocused light source mount for a parabolic aluminized reflector (PAR) lamp and, in particular, to improved leak-proof sealing means for an all-plastic PAR lamp or a PAR lamp comprising a plastic reflector. The improved mount construction utilizes a plastic block having mating parts which define a cavity from which lead wires extend and which is filled with an elastomeric polymer providing both a leak-proof seal around the lead wires as well as a more reliable barrier to moisture leakage through the mount assembly.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: July 13, 1982
    Assignee: General Electric Company
    Inventors: James M. Hanson, Irving Bradley
  • Sealed prefocused mount for plastic par lamp
    Patent number: 4339790
    Abstract: Improved positioning means are provided to locate a light source at the focus of a parabolic aluminized reflector (PAR) lamp and, in particular to improved positioning means which center said light source in the plastic reflector of a PAR lamp and preferably an all plastic PAR lamp. The preferred mount construction being employed utilizes a plastic block having mating parts which define a cavity from which lead wires extend and which is filled with an elastomeric polymer providing both a leak-proof seal around the lead wires as well as a more reliable barrier to moisture leakage through the mount assembly. The improved positioning means can be rib elements located in the receptacle means on said reflector to which said plastic mount is joined.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: July 13, 1982
    Assignee: General Electric Company
    Inventors: James M. Hanson, Martin J. Graf, Irving Bradley
  • Cylinder handling device
    Patent number: 4337633
    Abstract: A method and apparatus is disclosed for removing any out-of-round condition found in deformable metal cylinders by means of gripping the vertically aligned cylinder successively between a pair of spaced apart endless conveyor belts. The metal cylinders are fed to said pair of endless conveyor belts by moving alignment means which orients each cylinder with the cylindrical axis in a vertical direction and aligns said vertically oriented cylinders in a row while being fed to the cooperating belt members. In a preferred embodiment, the cylinder alignment is accomplished with a vertical gas column while the cylinders are proceeding in a horizontal direction.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: July 6, 1982
    Assignee: General Electric Company
    Inventor: Harold W. Logue
  • Mounting pads for plastic par lamp
    Patent number: 4336577
    Abstract: Improved seating or mounting pads are provided in a plastic reflector for a parabolic aluminized reflector (PAR) lamp and, in particular, hollow mounting pads are located at each corner of a rectangular shaped plastic reflector member to avoid deformation of the parabolic cavity when the reflector member is formed. In a preferred embodiment, the reflector member is of a unitary molded construction which further includes a sealing rim and with said mounting pads comprising semi-circular hollow boss elements which are located on the rear surface of said sealing rim and project backwardly therefrom to terminate on the parabolic cavity surface.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: June 22, 1982
    Assignee: General Electric Company
    Inventor: James M. Hanson
  • Plastic par lamp construction with reinforced recepticle area
    Patent number: 4336578
    Abstract: An improved plastic reflector member for a parabolic aluminized reflector (PAR) lamp is disclosed and, in particular, use of said improved plastic reflector member for an all plastic PAR lamp or a PAR lamp which uses said improved reflector member. Said improved plastic reflector member utilizes a variable thickness wall member to form the parabolic shaped cavity wherein the wall thickness is sufficiently greater in the apex region of said parabolic cavity than in the adjoining wall region to avoid mechanical and heat distortion.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: June 22, 1982
    Assignee: General Electric Company
    Inventors: Irving Bradley, Vincent Vodicka
  • Flash lamp array having composite circuit board and electric shield member
    Patent number: 4334262
    Abstract: A multiple photoflash unit of the planar array type having a composite circuit board and electric shield member to which a plurality of flash lamps are electrically connected for sequential flashing with reduced possibility of accidental flashing due to electrostatic voltage charges. In a preferred embodiment the associated members are sandwiched between front and back housing covers in a manner permitting the flash lamps to generate a mechanical spring action for additional physical support in the assembly.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: June 8, 1982
    Assignee: General Electric Company
    Inventor: Edward L. Latos
  • Flash lamp array having electrical shield
    Patent number: 4329734
    Abstract: A photoflash lamp array comprising a housing elongated vertically and containing elongated flash lamps lying horizontally and stacked vertically, the flash lamps having lead-in wires extending from ends thereof near the sides of the housing and connected to a circuit board located behind the lamps. A conductive sheet-like shield is positioned between the circuit board in the rear of the housing and is contoured to have side portions extending forwardly in between lamp ends and the sides of the housing. The front surface of the shield is both electrically conductive and reflects light with electrically insulated flash indicator material being positioned on said front surface but not extending to the side portions thereof. By increasing the light reflective surface of said shield member in this manner there is increased light output obtained from said lamp array.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: May 11, 1982
    Assignee: General Electric Company
    Inventor: Edward L. Latos
  • X-Ray image converters utilizing rare earth admixtures
    Patent number: 4316092
    Abstract: Various rare earth phosphor admixtures are described utilizing thulium-activated oxyhalides of lanthanum and/or gadolinium to provide improved performance in x-ray image converter devices. These phosphor admixtures are used in radiographic screens in combination with either blue sensitive or green sensitive photographic film.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: February 16, 1982
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Rare earth oxyhalide phosphor and x-ray image converters utilizing same
    Patent number: 4315979
    Abstract: Rare earth oxyhalide phosphors activated with terbium and/or thulium ion are described exhibiting improved brightness which are particularly useful in x-ray image converter devices by reason of producing less light scattering and absorption as a result of superior crystalline characteristics. A multilayer x-ray screen construction utilizing said phosphor material is also described utilizing said phosphor material which exhibits improved image sharpness and a reduced crossover problem. An improved process for producing said phosphor material is further disclosed wherein the selected oxyhalide is recrystallized in a molten alkali metal halide flux to produce the superior crystalline characteristics.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: February 16, 1982
    Assignee: General Electric Company
    Inventors: Marjorie J. Brines, Jacob G. Rabatin
  • Glass flash tube
    Patent number: 4310773
    Abstract: A xenon flash tube is disclosed utilizing a particular borosilicate glass for the lamp envelope which is sealed directly by hermetic seal to inleads of a metal alloy predominantly of iron, nickel and cobalt. Additionally, said flash tube employs particular electron emission means in the form of a porous sintered body of refractory metal having an electron emissive material dispersed therein. This flash tube construction can be operated at reasonably high energy loadings for an extended number of flashes without experiencing significant light output deterioration.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: January 12, 1982
    Assignee: General Electric Company
    Inventors: Edward C. Zukowski, John C. Sobieski