Patents Represented by Attorney Philip L. Schlamp

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  • X-Ray image converter devices utilizing rare earth oxyhalide phosphors
    Patent number: 4540599
    Abstract: An improved X-ray image converter is disclosed which utilizes a phosphor layer of plate-like rare earth oxyhalide phosphor crystals having said phosphor crystals physically aligned to improve light emission from the phosphor layer. More particularly, said phosphor layer is formed with the plate-like crystals being aligned generally parallel to the longitudinal axis of said phosphor layer at both surface regions while the intermediate phosphor crystals are aligned generally perpendicular to said longitudinal axis. Said improvement can be provided during formation of phosphor layer from a liquid suspension by introducing particular velocity gradients in the flow pattern of said liquid suspension.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: September 10, 1985
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Quartz to metal seal
    Patent number: 4539509
    Abstract: A lead-free sealing glass consisting essentially of, in parts by weight, 8-25 BaO, 20-35 B.sub.2 O.sub.3, and 45-72 Sb.sub.2 O.sub.3 except for incidental impurities, residual fluxes and refining agents provides an improved molten sealing action especially useful for high temperature electric lamp envelopes and other electrical devices. More particularly, a protective molten seal utilizing said sealing glass is formed between a refractory metal inlead which extends into a larger sized opening of a fused quartz member by filling the free space between said opening in the fused quartz member and the refractory metal inlead with the aforementioned sealing glass composition and thereafter converting the sealing glass to a molten condition during device operation.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: September 3, 1985
    Assignee: General Electric Company
    Inventor: Arun K. Varshneya
  • Alternating current driven piezoelectric latching relay and method of operation
    Patent number: 4538087
    Abstract: An alternating current latching relay is provided which employs a latching-type, mechanically operated snap-action switch mechanism with a set of electric contacts that are selectively latched either in the open or closed condition in a snap-action manner upon successive actuations of the snap-action mechanism by suitable push rod means for initiating its operation. At least one alternating current excited bender-type piezoelectric drive member has one end secured to a common base member with the latching-type snap-action switch mechanism and the remaining free end engaging the push rod means.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: August 27, 1985
    Assignee: General Electric Company
    Inventors: Carmen P. Germano, John M. Davenport
  • R lamp having an improved neck section for increasing the useful light output
    Patent number: 4536834
    Abstract: A reflector (R) having an improved neck section that increases the useful light output of the lamp is disclosed. The reflector lamp comprises a concave reflector having a primary reflective surface with a parabolic shape, one or more intermediate reflective surfaces with a parabolic shape substantially confocal with the primary reflective surface, and an improved neck section comprising a reducing section, a first substantially straight cylindrical section, an expanding section and a second substantially straight cylindrical section.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: August 20, 1985
    Assignee: General Electric Company
    Inventors: Robert W. Sands, Daniel M. Bloom
  • Incandescent lamp
    Patent number: 4535269
    Abstract: A general service incandescent lamp having a tungsten filament, an improved inner shaped bulb and a temperature resistant infrared reflective film on the outer surface of the inner bulb is disclosed. The inner bulb has an ellipsoidal shape which cooperates with the tungsten filament and infrared film to provide a highly efficient incandescent lamp.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: August 13, 1985
    Assignee: General Electric Company
    Inventors: Charles D. Tschetter, Rolf S. Bergman
  • Process for the preparation of rare earth oxyhalide phosphor
    Patent number: 4532070
    Abstract: Rare earth oxyhalide phosphors activated with thulium ion and further incorporating scandium ion are described exhibiting improved optical resolution for the light image produced therefrom in X-ray image converter devices by reason of the particle size and shape of the phosphor crystals. A multilayer X-ray screen construction utilizing said phosphor material is also described exhibiting improved image sharpness attributable to said phosphor improvement. A preparation method is disclosed wherein the selected oxyhalide is recrystallized in a particular manner to produce phosphor crystals having a more polyhedral shape.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: July 30, 1985
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Dual load control circuit
    Patent number: 4528456
    Abstract: A control circuit provides full range power control to a pair of electrical loads via a single two-wire power cable by controlled switching of a bidirectional solid state switch during each consecutive half-wave cycle to supply power to one load during each positive half-wave cycle and to the other load during each negative half-wave cycle. The switching during each half-wave cycle is controlled by a respective trigger circuit. Interference by power supplied to one load with the operation of the other load is prevented by removing any residual voltage from the respective trigger circuit at the end of each half-wave cycle.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: July 9, 1985
    Assignee: General Electric Company
    Inventor: Dewey L. Harris
  • Discrete starter for HID lamp
    Patent number: 4527098
    Abstract: A discrete type starter for HID lamps uses a ferrite core pulse transformer whose secondary is connected in series with the lamp across a ballast output winding. The primary is formed by mounting one or more sidacs and a resistor astride the core loop and interconnecting them by cladding on the board to make two or three turns around the core. The primary is connected across a capacitor which is connected in series with an impedance across the ballast output winding.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: July 2, 1985
    Assignee: General Electric Company
    Inventor: Daniel V. Owen
  • Capacitively ballasted low voltage incandescent lamp
    Patent number: 4525651
    Abstract: A capacitively ballasted low voltage lamp comprising a main capacitor connected electrically in series with the lamp, across an alternating current source, and one or more auxiliary capacitors that can be connected electrically across the main capacitor by switching means for one or more source waveform cycles. The minimum lamp current is established by the main capacitor, with additional lamp current flowing through one or more auxiliary capacitors during one or more source waveform cycles.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: June 25, 1985
    Assignee: General Electric Company
    Inventor: Frederic F. Ahlgren
  • Method of manufacturing a ballast resistor support member
    Patent number: 4525230
    Abstract: A method of manufacturing a reinforced strip of insulative material comprising the steps of extruding a thermoplastic insulative material in the shape of a tube or spaced apart strips about a plurality of separated and substantially parallel reinforcing strands positioned within said tube or strips and compressing and cooling the tube or strips to form a flattened single strip having opposed flattened sides with the reinforcing strands firmly secured therebetween is disclosed. A reinforced support for a ballast resistor manufactured in accordance with the described method is also disclosed.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: June 25, 1985
    Assignee: General Electric Company
    Inventors: Frederick Hetzel, William G. McCracken, Jr.
  • General service incandescent lamp with improved efficiency
    Patent number: 4524302
    Abstract: A high efficiency general service incandescent lamp is disclosed. The disclosed improved general service incandescent lamp has an outer and an inner envelope. The inner envelope has a relatively small housing containing a halogen gas and a relatively high pressure efficient fill-gas and in which a low voltage filament is spatially disposed therein.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: June 18, 1985
    Assignee: General Electric Company
    Inventor: Ivan Berlec
  • Shaped discharge lamp with starting aid
    Patent number: 4523126
    Abstract: A discharge lamp comprising an elongated bulb shaped so that the ends thereof are substantially closer together than if the bulb were straight and containing electrodes respectively near said ends thereof, and a starting air comprising conductive members respectively adjacent to said bulb behind the plane of each of said electrodes, and means electrically interconnecting said conductive members.
    Type: Grant
    Filed: April 15, 1982
    Date of Patent: June 11, 1985
    Assignee: General Electric Company
    Inventors: Edward E. Hammer, Charles E. Beck
  • Motor vehicle headlamp
    Patent number: 4520433
    Abstract: A vehicle lamp, such as a headlamp or fog lamp, having a concave reflector truncated at its top and bottom, one of the truncated surfaces being closer to the optical axis than the other truncated surface, and both truncated surfaces being substantially non-reflective. This achieves significant glare control without requiring a separate shield between the light source and the reflector.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: May 28, 1985
    Assignee: General Electric Company
    Inventor: Walter J. Kosmatka
  • Orientable refractor mounting
    Patent number: 4520435
    Abstract: A polycarbonate orientable refractor for a luminaire comprises a mounting ring which has a collar portion fitting a neck portion of the refractor with matching diameters. A diametric interference is provided between a groove in one part and a mating ridge in the other part to an extent allowing a snap fit. Shallow interfering ribs and valleys in the mating surfaces controllably lock the parts together while allowing angular indexing for orienting the light distribution pattern of the refractor.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: May 28, 1985
    Assignee: General Electric Company
    Inventor: Samuel L. Baldwin
  • Fluorescent lamp with cathode heat switches
    Patent number: 4517493
    Abstract: A rapid start fluorescent lamp comprising a pair of cathode mounts each having a pair of lead-in wires for cathode heating current, and a thermal switch to turn off the heating current after sufficient cathode heating for the lamp to operate. A third lead-in wire in each mount bypasses the thermal switch and is used for heating the cathodes to activate them during manufacturing.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: May 14, 1985
    Assignee: General Electric Company
    Inventors: Peter V. Dembowski, Quentin D. Dobras
  • Incandescent lamp source utilizing an integral cylindrical transparent heat mirror
    Patent number: 4517491
    Abstract: An improved incandescent lamp comprising an inner envelope disposed within an outer envelope is disclosed. The inner envelope contains a halogen gas along with a relatively high pressure efficient fill gas. The inner envelope houses a tungsten filament which is partly surrounded by a separate light-transmissive cylinder. The separate cylinder has on one of its surfaces a selective infrared reflective filter capable of efficiently operating at a temperature range of up to and including about 950.degree. to about 1050.degree. C.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: May 14, 1985
    Assignee: General Electric Company
    Inventors: Lee W. Otto, John H. Ingold, Rolf S. Bergman
  • Luminaire hinge and latch
    Patent number: 4516196
    Abstract: In a luminaire comprising an upper housing assembly for a light source and a lower plastic refractor closing the underside and having a rim adapted to mate with that of the assembly, C-shaped latches are disposed around the periphery of said refractor for clamping the rims together when pivoted into position astride both rims. Circumferentially extending bail wires attach the latches to the underside of the refractor rim and allow them to be pivoted into clamping position while preventing them from dropping off when disengaged. The bail wires pass through holes molded in the plastic of the refractor rim.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: May 7, 1985
    Assignee: General Electric Company
    Inventor: Walter R. Blake
  • Capacitively ballasted low voltage incandescent lamp
    Patent number: 4516056
    Abstract: A capacitively ballasted low voltage lamp utilizing a main capacitor connected electrically in series with the lamp, across an alternating current source, and one or more auxiliary capacitors that can be connected electrically across the main capacitor by switching means for one or more source waveform cycles. Each switching means comprises a unidirectional conductive device electrically connected in parallel with an active switching device. The minimum lamp current is established by the main capacitor, with additional lamp current flowing through one or more auxiliary capacitors during a source waveform cycle or integral multiples thereof.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: May 7, 1985
    Assignee: General Electric Company
    Inventor: Paul T. Cote
  • Fluorescent lamp series system
    Patent number: 4513225
    Abstract: A pair of 48-inch long preheat fluorescent lamps, each one and a half inches diameter and consuming less than 10 watts power per foot of length, are connected in series with each other and with a ballast, for operation from 50 or 60 hertz a-c line voltage in the range of 200 to 300 volts. A starter switch is connected in parallel across each lamp. The lamp designs are specified such that they will start and operate in the circuit from the a-c line voltage.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: April 23, 1985
    Assignee: General Electric Company
    Inventors: Alfred E. Lemmers, Edward E. Hammer
  • High efficiency ballast system for gaseous discharge lamps
    Patent number: RE31970
    Abstract: Electrical lamp ballast system for starting and operating fluorescent lamps with improved efficiency. System includes high leakage reactance autotransformer having primary and secondary windings, and a ballast capacitor connected in series with the secondary winding and two serially connected fluorescent lamps of low starting and operating voltage, the secondary circuit being connected to a tap on the primary winding for reducing the ratio of the ballast power input to the lamp light output. The system provides for reduced lamp current crest factor, thereby improving life and operating characteristics of the lamps.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: August 13, 1985
    Assignee: General Electric Company
    Inventors: David H. Riesland, Edward E. Hammer, Eugene Lemmers