Patents Represented by Attorney, Agent or Law Firm Jeannette M. Walder
  • Method and apparatus for maintaining equilibrium in a helical axis stellarator
    Patent number: 4668464
    Abstract: Apparatus for maintaining three-dimensional MHD equilibrium in a plasma contained in a helical axis stellerator includes a resonant coil system, having a configuration such that current therethrough generates a magnetic field cancelling the resonant magnetic field produced by currents driven by the plasma pressure on any given flux surface resonating with the rotational transform of another flux surface in the plasma. Current through the resonant coil system is adjusted as a function of plasma beta.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: May 26, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Allan Reiman, Allen Boozer
  • Helical axis stellarator with noninterlocking planar coils
    Patent number: 4663109
    Abstract: A helical axis stellarator using only noninterlocking planar, non-circular coils, generates magnetic fields having a magnetic well and large rotational transform with resultant large equilibrium beta.
    Type: Grant
    Filed: March 6, 1984
    Date of Patent: May 5, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Allan Reiman, Allen H. Boozer
  • Solid phase electrode
    Patent number: 4653499
    Abstract: An electrode for use in miniaturized sensor applications includes an electrically conductive element, a first layer of a salt on the surface of the conductive element having a common cation with the conductive element, a second layer of a second salt coating the first layer, the second layer having a common anion with the first layer, and a membrane covering the second layer, wherein the electrode is completely anhydrous when formed. The membrane may be selected to form either an ion selective electrode or a reference electrode.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: March 31, 1987
    Assignee: Gould Inc.
    Inventors: Richard C. Murray, Jr., J. Scott Fowler, Mark S. Goorsky
  • System and method of operating toroidal magnetic confinement devices
    Patent number: 4654184
    Abstract: For toroidal magnetic confinement devices the second region of stability against ballooning modes can be accessed with controlled operation. Under certain modes of operation, the first and second stability regions may be joined together. Accessing the second region of stability is accomplished by forming a bean-shaped plasma and increasing the indentation until a critical value of indentation is reached. A pusher coil, located at the inner-major-radius side of the device, is engaged to form a bean-shaped poloidal cross-section in the plasma.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: March 31, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Morrell S. Chance, Stephen C. Jardin, Thomas H. Stix, Ray C. Grimm, deceased, Janardhan Manickam, Michio Okabayashi
  • Electronic imaging system and technique
    Patent number: 4649426
    Abstract: A method and system for viewing objects obscurred by intense plasmas or flames (such as a welding arc) includes a pulsed light source to illuminate the object, the peak brightness of the light reflected from the object being greater than the brightness of the intense plasma or flame; an electronic image sensor for detecting a pulsed image of the illuminated object, the sensor being operated as a high-speed shutter; and electronic means for synchronizing the shutter operation with the pulsed light source.
    Type: Grant
    Filed: June 12, 1984
    Date of Patent: March 10, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Jon O. Bolstad
  • Limiter
    Patent number: 4626399
    Abstract: A limiter with a specially contoured front face accommodates the various power scrape-off distances .lambda..sub.p, which depend on the parallel velocity, V.sub..parallel., of the impacting particles. The front face of the limiter (the plasma-side face) is flat with a central indentation. In addition, the limiter shape is cylindrically symmetric so that the limiter can be rotated for greater heat distribution.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: December 2, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Samuel A. Cohen, Joel C. Hosea, John R. Timberlake
  • Multi-channel infrared thermometer
    Patent number: 4607963
    Abstract: A device for measuring the two-dimensional temperature profile of a surface comprises imaging optics for generating an image of the light radiating from the surface; an infrared detector array having a plurality of detectors; and a light pipe array positioned between the imaging optics and the detector array for sampling, transmitting, and distributing the image over the detector surfaces. The light pipe array includes one light pipe for each detector in the detector array.
    Type: Grant
    Filed: March 8, 1983
    Date of Patent: August 26, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Michael A. Ulrickson
  • Vacuum ultraviolet laser
    Patent number: 4606030
    Abstract: Transitions from the 2p.sup.4 (.sup.1 S.sub.0)3s .sup.2 S.sub.1/2 state of atomic fluorine to all allowed lower states produces laser emission at six new wavelengths: 680.7 .ANG., 682.6 .ANG., 3592.7 .ANG., 3574.1 .ANG., 6089.2 .ANG., and 6046.8 .ANG.. Coherent radiation at these new wavelengths can be generated in an atomic fluorine laser operated as an amplifier or as an oscillator.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: August 12, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Joseph Berkowitz, Branko M. Ruscic, John P. Greene
  • Differential pair amplifier enhancement circuit
    Patent number: 4605906
    Abstract: An enhanced differential pair amplifier circuit 28, 30 is described which provides a linearity correction technique. The linearity correction technique is designed to compensate for nonlinearities in the base-to-emitter output voltage of each transistor in a differential pair of transistors over the dynamic input range of the amplifier. The present invention comprises the inclusion of compensation diodes or transistors 42, 44 in the load circuit of each input transistor in the differential pair to compensate for nonlinearities.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: August 12, 1986
    Assignee: Gould Instruments, Ltd.
    Inventor: Allen Miller
  • Variable control device
    Patent number: 4599496
    Abstract: A variable control device comprises a manually operable member (5) arranged to be moved in a first direction (A) by an operator. A substrate (2) is provided with a plurality of contacts (4) spaced apart in a plane transverse to the first direction. A further member (6) is disposed between the manually operable portion (5) and substrate (2), The further member (6) is provided with a conductive surface facing the substrate (2). Movement of the manually operable portion (5) in the first direction (A) causes deformation of the further member (6). Contacts 4 on the substrate are progressively bridged by the further member conductive surface as deformation of the further member (6) increases.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: July 8, 1986
    Inventor: Thomas H. Lecklider
  • Disposable rabbit
    Patent number: 4599517
    Abstract: A disposable rabbit for transferring radioactive samples in a pneumatic transfer system comprises aerated plastic shaped in such a manner as to hold a radioactive sample and aerated such that dissolution of the rabbit in a solvent followed by evaporation of the solid yields solid waste material having a volume significantly smaller than the original volume of the rabbit.
    Type: Grant
    Filed: October 12, 1983
    Date of Patent: July 8, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Leroy C. Lewis, David R. Trammell
  • Acoustic cross-correlation flowmeter for solid-gas flow
    Patent number: 4598593
    Abstract: Apparatus for measuring particle velocity in a solid-gas flow within a pipe includes: first and second transmitting transducers for transmitting first and second ultrasonic signals into the pipe at first and second locations, respectively, along the pipe; an acoustic decoupler, positioned between said first and second transmitting transducers, for acoustically isolating said first and second signals from one another; first and second detecting transducers for detecting said first and second signals and for generating first and second detected signals in response to said first and second detected signals; and means for cross-correlating said first and second output signals.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: July 8, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Shuh-Haw Sheen, Apostolos C. Raptis
  • Method for repairing a photomask by laser-induced polymer degradation
    Patent number: 4592975
    Abstract: A method for repairing clear defects on a photomask. The method includes the steps of coating the photomask with a positive photoresist; exposing the photoresist to a laser beam for localized heating thereof to a temperature above 500.degree. C. to darken or char the polymer; and removing the unexposed polymer from the photomask. The method may also include the intermediate step of heating the polymer to a temperature between 200.degree. C. and 500.degree. C. to brown the polymer before the polymer is exposed to the laser which heats it to a temperature above 500.degree. C.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: June 3, 1986
    Assignee: Gould Inc.
    Inventors: Peter L. Young, Modest M. Oprysko, Mark W. Beranek
  • Laser-recrystallized diaphragm pressure sensor and method of making
    Patent number: 4592238
    Abstract: A pressure sensor includes a diaphragm and an overpressure stop, with a gap inbetween for displacement of the diaphragm in response to an applied pressure, the diaphragm being formed of laser-recrystallized polysilicon. Data extraction is accomplished either by depositing or forming four piezoresistors on the diaphragm and connecting them as the elements of a Wheatstone bridge circuit or by using the appropriately doped laser-recrystallized diaphragm as a piezoresistor itself.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: June 3, 1986
    Assignee: Gould Inc.
    Inventor: Heinz H. Busta
  • Induction voidmeter
    Patent number: 4590431
    Abstract: An induction voidmeter for detecting voids in a conductive fluid may comprise: a four arm bridge circuit having two adjustable circuit elements connected as opposite arms of said bridge circuit, an input branch, and an output branch; two induction coils, bifilarly wound together, connected as the remaining two opposing arms of said bridge circuit and positioned such that the conductive fluid passes through said coils; applying an AC excitation signal to said input branch; and detecting the output signal generated in response to said excitation signal across said output branch. The induction coils may be located outside or inside a non-magnetic pipe containing the conductive fluid.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: May 20, 1986
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Thomas T. Anderson, Conard J. Roop, Kenneth J. Schmidt, John Brewer
  • Method of fabricating a Schottky barrier field effect transistor
    Patent number: 4587710
    Abstract: A method of fabricating a Schottky barrier MOSFET wherein a polysilicon gate chip is disposed adjacent the drain and source regions of a single crystal silicon substrate surface, and a metal is deposited on the top surface of the gate chip and the drain and source regions of the substrate surface by direct reaction of the silicon of the surfaces with a compound of a tungsten or molybdenum. Preferably, the sidewalls of the gate chip are masked during the deposition of metal to avoid the formation of a metal bridge between the gate and drain or the gate and source.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: May 13, 1986
    Assignee: Gould Inc.
    Inventor: Kuey-Yeou Tsao
  • Method and means for generating electrical and magnetic fields in salt water environment
    Patent number: 4582582
    Abstract: An elongated dimensionally stable flexible electrode (30) having a current carrying inner portion (31) in an outer protective and electrically conductive sheath (33) preferably formed of ruthenium dioxide. A layer of titanium cladding (33) may be provided on the inner current carrying portion (31) for carrying the outer sheath (33). The anode electrode is utilized for generating electrical current, such as for use in developing magnetic fields in salt water environments, preferably as an element of a sweep cable device having a floatation means around which one or more electrodes are helically wound.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: April 15, 1986
    Assignee: Gould Inc.
    Inventor: Henry F. Gibbard
  • Method of making thin free standing single crystal films
    Patent number: 4582559
    Abstract: Thin free standing single crystal films can be produced by sputter depositing a layer of stressable metal onto a single crystal substrate, treating the composite so produced to effect stressing of the metal layer which then peels away with a portion of the single crystal substrate attached to the metal layer. The free standing film thus produced has typical thickness in the order of tens of micrometers. The metal layer can subsequently be removed by acid etching or other suitable etching techniques, to leave the free standing single crystal film, having a thickness from about 5 microns to about 50 or more.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: April 15, 1986
    Assignee: Gould Inc.
    Inventors: Minas Tanielian, Robert E. Lajos, Scott Blackstone
  • Brazing technique
    Patent number: 4572939
    Abstract: A method of brazing comprises sand blasting the surfaces of the components to be brazed with particles of a brazing material to clean the surfaces and to embed brazing material in the surfaces, applying the brazing material to the surfaces, and heating the brazing material to form a brazement between the components.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: February 25, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Donald G. Harast
  • Apparatus for sampling and characterizing aerosols
    Patent number: 4570494
    Abstract: Apparatus for sampling and characterizing aerosols having a wide particle size range at relatively low velocities may comprise a chamber having an inlet and an outlet, the chamber including: a plurality of vertically stacked, successive particle collection stages; each collection stage includes a separator plate and a channel guide mounted transverse to the separator plate, defining a labyrinthine flow path across the collection stage. An opening in each separator plate provides a path for the aerosols from one collection stage to the next. Mounted within each collection stage are one or more particle collection frames.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: February 18, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Patrick F. Dunn, Joseph E. Herceg, Robert H. Klocksieben