Patents Represented by Attorney J. F. McDevitt
  • Patent number: 4559473
    Abstract: An electrode structure for sodium vapor lamps is disclosed having molybdenum metal wire coils wound around a tungsten shank to replace the customary all-tungsten electrode structure in these lamps. The improved electrode structures provide increased initial lumens with acceptable lumen maintenance.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: December 17, 1985
    Assignee: General Electric Company
    Inventor: Charles I. McVey
  • Patent number: 4554732
    Abstract: An array of electrically interconnected spaced electrical components on an apertured substrate wafer, each component being connected to terminal conductor pads on one surface of the substrate and to terminal conductor pads on the opposite surface of the substrate by thick film conductor strips which extend along the walls of the apertures is disclosed.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: November 26, 1985
    Assignee: General Electric Company
    Inventors: James L. Sadlo, Gary D. Musil
  • Patent number: 4555748
    Abstract: An improved vehicle lamp for forward illumination, such as a headlamp or fog lamp is provided which is substantially devoid of upward directed glare light and which is formed with a synthetic organic polymer material. Heat shield means are disclosed for said vehicle lamp to prevent heat distortion otherwise occurring at the lamp roof by reason of its proximity to the light source used. Said heat shield means can be provided as an integral portion of the lamp roof when molded and further include heat transfer means to dissipate heat from the internal lamp envelope.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: November 26, 1985
    Assignee: General Electric Company
    Inventor: Irving Bradley
  • Patent number: 4553928
    Abstract: An improved multiple flashlamp array is disclosed having a plurality of low voltage type lamps fired individually and in sequence by means of a plurality of static solid switching devices capable of reliable actuation by radiant energy generated during flashing of the lamps. Initially, these switching devices have a high electrical resistance ("off position") and after being actuated by the heat and light radiation, they undergo chemical conversion to an electrically conductive state ("on position"). The switch devices are prepared in a conventional manner from a particulate mixture of silver oxide with oxidized copper metal and which further contains a particular organic polymer binder mixture. The low voltage flashlamps being fired in this manner require that the converted switch devices exhibit an electrical resistance after conversion not to exceed about 0.3 ohms.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: November 19, 1985
    Assignee: General Electric Company
    Inventors: Steven C. Lorenzen, Vaughn C. Sterling
  • Patent number: 4553061
    Abstract: A direct current latching relay comprised of bender-type piezoelectric drive members each of which is a three terminal member formed of two piezoelectric plate elements separated by a conductive plane. Each piezoelectric plate element is separately electrically charged with an input pulsed d.c. switching signal of the same polarity as the pre-poling field previously induced in the piezoelectric plate element. By electrically charging one of the piezoelectric plate elements with a switching signal electric field of the same polarity as the pre-poling field, the bender-type drive members are member made to bend in one direction. Alternatively, by charging the opposite plate of the drive member again with a direct current electric charging field of the same polarity as the pre-poling field previously induced in the plate, the bender-type drive member can be caused to bend in the opposite direction.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: November 12, 1985
    Assignee: General Electric Company
    Inventor: Carmen P. Germano
  • Patent number: 4544998
    Abstract: A rectangular or other polygonal shaped lamp, such as a headlamp, comprising a lens member sealed to a reflector member. The lens member is provided with a rearwardly projecting polygonal rim having a surface which fits against and is sealed to a front rim of the reflector unit. The reflector front rim is provided with frontwardly projecting positioning members near at least two diagonally opposite corners, which fit inside corresponding corners of the lens rim for aligning the lens and reflector members together during sealing.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: October 1, 1985
    Assignee: General Electric Company
    Inventor: Bruce E. Shanks
  • 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
  • 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
  • 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
  • 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
  • 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.
  • 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