Patents Represented by Attorney Philip L. Schlamp

Find this attorney in the Justia Lawyer Directory

  • Increased efficacy arc tube for a high intensity discharge lamp
    Patent number: 4612475
    Abstract: Disclosed is a short-arc high intensity discharge lamp having an improved arc tube as its light source. The arc tube contains an inert gas and a dosage comprising Indium (In), Mercury (Hg), Dysprosium (Dy), and Iodine (I).
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: September 16, 1986
    Assignee: General Electric Company
    Inventor: Robert D. Downing
  • Polarized threaded lamp base
    Patent number: 4610498
    Abstract: A polarized screw base assuring constant angular orientation of a lamp has a polarizing locator for engaging a stop in a mating socket. The locator consists of a length of metal rod welded lengthwise on the crest of a base thread with multiple spot welds to assure adequate shear strength. The leading end of the locator is formed with a hooked or alternatively with a balled end to achieve a locking effect with the stop in the socket.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: September 9, 1986
    Assignee: General Electric Company
    Inventor: Leonard A. Thomas
  • High pressure sodium vapor lamp having D.C. resistive ballast circuits
    Patent number: 4609849
    Abstract: Various embodiments of direct current (D.C.) ballasting circuits for low wattage high pressure sodium (HPS) vapor lamps are disclosed. In one ballast embodiment a negative going high voltage pulse is applied directly to the H.P.S. lamp cathode during the starting operation and the ballast circuit preferentially diverts a major portion of the HPS lamp current around a high-voltage transformer during normal operation so as to reduce the resistive heating of the transformer. In a second ballast embodiment, capacitors are arranged into voltage multiplying circuit for generating the high D.C. starting voltage along with diodes that reduce the power dissipation of the ballast circuit.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: September 2, 1986
    Assignee: General Electric Company
    Inventor: Park French
  • Mounting structure for multi-filaments of an incandescent lamp
    Patent number: 4605877
    Abstract: An improved structure for mounting minor and major filaments of a three-way incandescent lamp is disclosed. The improved mounting structure orients the major filament in either an axial or transverse manner and the minor filament in a transverse manner. The transverse mounting of the major and minor filaments is established by the selection of the respective parameters of the inner lead wires connected to the minor and major filaments so as to improve the ability of each transverse mounted filament to withstand mechanical shock.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: August 12, 1986
    Assignee: General Electric Company
    Inventors: Timothy C. Cho, Edwin J. Lohrey
  • Baseless incandescent lamp
    Patent number: 4604553
    Abstract: A baseless incandescent lamp having various embodiments all with a single glass unit forming an outer envelope, complementary threads for mating with an electrical socket and an insulative stem is disclosed. The baseless incandescent lamp further comprises a filament rigidly disposed by the insulated stem within the outer envelope and connected between a pair of inner leads. The inner leads are connected to respective outer leads wherein one of the outer leads is connected to at least a portion of the complementary threads by a layer of electrically conductive metal. In one embodiment the other outer lead extends through a central opening of a plastic stem occupying a hollow portion of the outer envelope and is externally and electrically connected to the plastic stem by a layer of the electrically conductive metal.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: August 5, 1986
    Assignee: General Electric Company
    Inventor: Jerry C. Kosmach
  • X-ray image converter devices using rare earth oxyhalide phosphors
    Patent number: 4603259
    Abstract: X-ray image converters using rare earth oxyhalide phosphors activated with terbium and/or thulium ion are described exhibiting improved brightness. Novel reflector means are provided in said x-ray image converter devices which reflect UV radiation incident thereupon back through the phosphor layer to associated readout or recording means sensitive to this wavelength radiation. A multi layer x-ray screen construction utilizing said improved reflector means is also described providing improved image sharpness while further reducing the crossover problem because more reflected UV radiation is being transmitted to an associated photographic film.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: July 29, 1986
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Time fuse for high pressure sodium lamps
    Patent number: 4599543
    Abstract: A high pressure sodium vapor lamp having a time fuse device effective for predeterminedly establishing the anticipated life of the high pressure lamp is disclosed. Also disclosed are various embodiments of the time fuse device.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: July 8, 1986
    Assignee: General Electric Company
    Inventor: Jack M. Strok
  • Method and apparatus for coating fluorescent lamp tubes
    Patent number: 4597984
    Abstract: Method and apparatus for electrostatically applying phosphor coatings to the interior surface of fluorescent lamp tubes includes equipment for applying an electrical charge of one polarity to the glass wall and electrical charge of the opposite polarity to the phosphor particles to cause the phosphor particles to adhere to the glass surface until the particles can be heated to bond them to the interior surface of the glass by lehring. By using electrostatic deposition the lehring may be done at a lower temperature than is required with conventional phosphor deposition using organic binders so that U-shaped fluorescent lamps do not experience distortion from the lehring temperature. The invention includes the fluorescent lamps provided which are devoid of residue of organic binder.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: July 1, 1986
    Assignee: General Electric Company
    Inventor: Jon B. Jansma
  • High efficiency tubular heat lamps
    Patent number: 4588923
    Abstract: A lamp adapted to various residential, commercial and industrial needs by a reflective film is disclosed. The disclosed lamp having the reflective film transmits desired portions of the radiation spectrum selected for impinging onto various mediums. Also disclosed are various arrangements of the reflective film along with various desired film characteristics selected for various mediums to be impinged.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: May 13, 1986
    Assignee: General Electric Company
    Inventors: Leonard E. Hoegler, Lee W. Otto
  • Autoresonant piezoelectric transformer signal coupler
    Patent number: 4584499
    Abstract: A piezoelectric transformer signal coupler utilizes a drive circuit including an oscillator constructed to excite the primary of a piezoelectric transformer at its characteristic anti-resonant frequency. Positive feedback signals modulated by the time domain response characteristic of the particular piezoelectric transformer force the oscillator to lock onto its characteristic anti-resonant frequency despite variations thereof due to temperature drift and secondary loading. The resulting drive circuit is implementable as a miniature, low mass integrated circuit mountable on the transformer's piezoceramic wafer to create a signal coupler of a single integrated structure.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: April 22, 1986
    Assignee: General Electric Company
    Inventors: Robert A. Leskovec, John M. Davenport, Orvar B. Burman
  • Method to reduce weld flash
    Patent number: 4583386
    Abstract: The method and apparatus is disclosed to reduce the size of weld flash located at the junction of two workpieces each having a cylindrical contour and which have been butt-welded together. This method and apparatus employ roller members which positively feed the butt-welded workpieces through a slot opening smaller in width than the original diameter of the weld flash. In the preferred embodiment, a roller is spaced apart from the stationary block member to establish the slot opening while the workpieces are rotated while being fed through the opening in order to exert sufficient mechanical force with the sides of the slot opening to reduce the diameter of the weld flash by compaction during passage therethrough.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: April 22, 1986
    Assignee: General Electric Company
    Inventor: Emmett P. Ham
  • High pressure sodium lamp having improved coloring rendition
    Patent number: 4580075
    Abstract: A high pressure sodium lamp operated at increased pressure and having an improved color rendition is disclosed. The improved high pressure sodium lamp has an arc tube which reduces the sodium losses typically experienced by high pressure operation.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: April 1, 1986
    Assignee: General Electric Company
    Inventor: Jack M. Strok
  • Tungsten halogen incandescent lamp having an improved mounting structure
    Patent number: 4578616
    Abstract: A single-ended tungsten halogen incandescent lamp having an improved mounting assembly for a planar multi-filament is disclosed. The improved mounting assembly comprises, in part, means rigidly located in the pinch seal end of the lamp for coupling the outer lead-in wires to support rod members of the mounting assembly. The means for coupling comprises a first foil member and a first tab member, and a second foil member and a second tab member. The foil members and tab members are arranged with the outer lead-in wires and support rods to form a torsion bar-like configuration which holds the planar multi-filament in the central region within the lamp itself. The torsion bar-like configuration also finds application to lamps other than this tungsten halogen incandescent lamp.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventor: John G. Cardwell, Jr.
  • Process for the preparation of rare earth oxyhalide phosphor
    Patent number: 4578211
    Abstract: Rare earth oxyhalide phosphors activated with thulium ion and further incorporating lutetium 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: March 25, 1986
    Assignee: General Electric Company
    Inventor: Jacob G. Rabatin
  • Piezoceramic coupler control circuit
    Patent number: 4575654
    Abstract: A control circuit for supplying power to a piezoceramic coupler includes a controllable oscillator for supplying an output signal having the resonance frequency of the piezoceramic coupler and an amplitude control circuit to control the amplitude of the output signal of the piezoceramic coupler. Switching devices are also included to control interruption of the application of the drive signal to the piezoceramic coupler.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: March 11, 1986
    Assignee: General Electric Company
    Inventor: John G. Basch
  • Metal vapor lamp having internal means promoting condensate film formation
    Patent number: 4574218
    Abstract: In a high intensity metal halide discharge lamp, means are provided associated with the interior surface of the envelope to promote the formation and spreading of a liquid film of condensate thereon. Such a film can lower the color temperature as a result of pressure broadening and self-reversal of the sodium line, and also by acting as a color correcting filter. The film-promoting means may be a coating which imparts an irregularity to the surface such that the reduction in exposed surface area by coverage with a uniform liquid film is energetically favored. Alternatively, a chemically different surface better wetted by the metal halide dose may be used.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: March 4, 1986
    Assignee: General Electric Company
    Inventors: Robert L. Bateman, Jr., Thomas F. Soules
  • Lighting unit
    Patent number: 4574219
    Abstract: A lighting unit having a filament serving as a supplementary light source, an improved gas discharge tube serving as a main light source having improved electrodes and an improved ballast circuit operating in cooperation with the improved electrodes is disclosed. Various embodiments of the improved electrodes and various embodiments of the improved ballast circuits are disclosed. The improved ballast circuit operating in cooperation with the improved electrodes provides for thermionic arc conditions in the operation of the gas discharge tube substantially immediately after the application of voltage applied to the unit.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: March 4, 1986
    Assignee: General Electric Company
    Inventors: John M. Davenport, Richard L. Hansler, Ralph M. Potter, John M. Blank, Dimitri M. Speros, Arthur S. Homa, Amarendra Mishra, Robert A. Leskovec
  • Ballast circuit for multiple parallel negative impedance loads
    Patent number: 4574222
    Abstract: A current-balancing transformer is provided to supply plural parallel-connected electrical loads, especially loads such as gas discharge lamps which exhibit negative impedance and/or non-linear impedance over at least a part of their normal operating range. The current-balancing transformer forces current sharing among the loads so that each of the parallel-connected loads is supplied operating current.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: March 4, 1986
    Assignee: General Electric Company
    Inventor: Thomas E. Anderson
  • Incandescent lamp and base
    Patent number: 4574217
    Abstract: An electrically insulative base for an incandescent lamp is disclosed having a three-part construction with all of the individual base parts being joined together in butt-seal engagement along a pair of horizontal planes parallel to each other and transverse to the longitudinal lamp axis. Said base construction is especially useful in the tungsten halogen cycle lamps of the high wattage type requiring that a ceramic material be used and whereby the ceramic base parts are joined together before lamp assembly with a ceramic sealing material.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: March 4, 1986
    Assignee: General Electric Company
    Inventor: Edward A. Pendergrass
  • Higher efficiency incandescent lighting unit having an improved ballast unit
    Patent number: 4572991
    Abstract: An improved general service incandescent lamp having an improved capacitive ballast circuit for operating a low voltage filament of the lamp is disclosed. Various embodiments of an improved capacitive ballast circuit that substantially eliminates unwanted stored energy and unwanted resistive dissipation are disclosed.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: February 25, 1986
    Assignee: General Electric Company
    Inventor: Paul T. Cote