Patents Examined by R. V. Rolinec
  • Method of polarizing nuclei
    Patent number: 3953789
    Abstract: A method of polarizing nuclei having a long relaxation time in a solid in a high DC magnetic field. The solid also contains nuclei having a short relaxation time. The method involves the step of applying a high DC magnetic field to the solid. Then the solid is swept with a radio frequency field which excites the nuclei with a short relaxation time thereby resulting in the polarization of the nuclei having a long relaxation time.
    Type: Grant
    Filed: November 20, 1974
    Date of Patent: April 27, 1976
    Assignee: International Business Machines Corporation
    Inventors: Wiebren Sjoerd Veeman, Costantino Sheldon Yannoni
  • Digital phase detector
    Patent number: 3953794
    Abstract: A digital system for measuring a phase relationship between two noisy signals of a given period wherein the phase difference measurement may lie in the range of from 0 to 360 degrees. The noisy signals are amplified and limited so that the processed signal only contains noise in the time vicinity around the zero crossing points. Time interval counters are utilized to measure the time delay between signals and the time period of the reference signal. Phase relationship may be determined by multiplying the ratio of the two digital numbers produced by 360.degree.. Errors in digital outputs are minimized by digitally integrating the counter input during the noisy zero crossover periods. The measurements are completed within two period times of the signals being measured and may be repeated in each of the succeeding two period times.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: April 27, 1976
    Assignee: Motorola Inc.
    Inventor: Phillip M. Moore
  • Optimal determination of signals affected by interference or disturbance
    Patent number: 3953793
    Abstract: The invention relates to a method and an arrangement for determining signals affected by disturbance or interference. The affected signals are continuously integrated, either directly or subsequent to suitable transformation thereof, from the very start of a measuring operation. The actual integration value is divided at determined time intervals with the actual measuring time which has elapsed at that moment from the start of said measuring operation. The quotient thus obtained is presented to an observer or a device which is arranged to interrupt the measuring operation when the value presented is substantially constant.
    Type: Grant
    Filed: September 4, 1974
    Date of Patent: April 27, 1976
    Assignee: Boliden Aktiebolag
    Inventor: Bruno Yngve Nilsson
  • Current amplifier
    Patent number: 3953807
    Abstract: A three-terminal current amplifier having a current gain substantially independent of the forward current gains of its component FET's. First and second FET's have source electrodes connected to the common terminal of the amplifier. A third FET has its source electrode connected to the second FET drain electrode and has its gate and drain electrodes connected to the input terminal and the output terminal of the amplifier, respectively. The gate electrodes of the first and second FET's and the first FET drain electrode are coupled to the input terminal by a potential source providing an offset potential smaller than the source-to-gate potential of an FET, which permits the potentials required between the common terminal and each of the input and output terminals to be reduced as compared to prior art FET amplifiers of this sort.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: April 27, 1976
    Assignee: RCA Corporation
    Inventor: Otto Heinrich Schade, Jr.
  • Conductivity monitoring system
    Patent number: 3953790
    Abstract: A conductivity monitoring system which includes at least three electrodes disposed within a housing of a conductivity cell, into and through which a fluid to be monitored is caused to flow. One of the electrodes is a common electrode and is positioned closer to one of the other two electrodes. The conductivity is measured between the wide spaced pair of electrodes and between the closer spaced pair of electrodes, with the difference being taken as the actual conductivity. With this arrangement, changes in the conductivity as a result of foreign matter collecting on the electrodes and the housing over a period of time are compensated for, since the difference in the conductivity between the two pairs of electrodes remain the same, even though the conductivity between each respective pair may change.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: April 27, 1976
    Assignee: Baxter Laboratories, Inc.
    Inventors: Wendell V. Ebling, Herbert Goldsmith
  • Electronic equipment assembly comprising plug-in modules and test bars
    Patent number: 3953797
    Abstract: A rack-mounted electronic equipment module having plug-in normal-service contacts for engagement with the connector panel of a cabinet. The module comprises, preferably on the front edge of the module card, a plurality of aligned test contacts cooperating with a removable plug-in test bar. A single test bar may be provided to test the operation of several modules.
    Type: Grant
    Filed: November 13, 1973
    Date of Patent: April 27, 1976
    Assignee: Merlin Gerin
    Inventors: Yves Bally Berard, Paul Claudin, Claude Leymarie
  • D.C. voltage ratio measuring circuit
    Patent number: 3952248
    Abstract: A circuit sensitive to the ratio of the values of two voltages of fixed polarities and possibly variable magnitudes, including two identical voltage dividers respectively fed from one and the other of said voltages and a third divider fed from a constant amplitude alternative voltage source. Each divider consists of a constant resistance and of a variable voltage sensitive resistance. The relative positions of the constant and variable resistances are the same in the two first dividers and are reversed in the third one; the latter is biassed by a voltage derived from at least one of the voltages to be compared. From the voltages received at the mid-points of the two first dividers, a resulting voltage is derived, the value of which has a simple relation to the ratio of the compared voltages.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: April 20, 1976
    Assignee: Lignes Telegraphiques et Telephoniques
    Inventor: Claude Hannigsberg
  • Edgewise meter assembly
    Patent number: 3952249
    Abstract: A flat meter assembly with a face displayed along one narrow end in edgewise fashion, the meter movement being mounted entirely in a molded frame and enclosed therein by a U-shaped top and bottom cover applied from the rear and a transparent face cover applied from the front, the two covers snapping together by integral fastenings. A series of lands and grooves along each side of the frame accept spring clips which are loaded by finger pressure and inserted between appropriate grooves and a mounting panel to secure the meter in place.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: April 20, 1976
    Assignee: LFE Corporation
    Inventor: Phillip Colman
  • Level indicating apparatus for P.C.M. transmitting system
    Patent number: 3952247
    Abstract: Level indicating apparatus includes a plurality of light emitting indicators each indicating a different level of analog signal encoded in pulse form, and two indicators responsive to the most significant bit of the pusle signal to indicate polarity and further responsive, by means of a logic circuit, to pulse coded signals indicating the maximum acceptable analog signal amplitude. Pulse lengthening circuits are provided to keep the indicators turned on for a predetermined time after the signal that actuates them has been removed.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: April 20, 1976
    Assignee: Sony Corporation
    Inventor: Tetsuya Horichi
  • Matrix type gas discharge display device
    Patent number: 3952230
    Abstract: In a matrix type gas discharge display device comprising a number of discharge elements at the crossings of the rows and columns of the display matrix, a group of display anodes is disposed at each discharge element by using a corresponding number of insulated wires and by removing insulation of one wire at each discharge element, and such exposed portion is shifted to a successive one of the wires every one of the crossings in a column, so that when the field scanning is made in the column direction, each different anode wire in a group operates successively in cyclic order. The applied scanning voltage is so controlled as to make such successive operation of the anodes. By such a field scanning, each discharge element luminates for a duration which is an integral multiple due to such number, of the duration in the conventional type device provided with only one display anode for each discharge element.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: April 20, 1976
    Assignee: Nippon Hoso Kyokai
    Inventor: Tetsuo Sakai
  • Current proportioning circuits
    Patent number: 3952257
    Abstract: A current mirror amplifier is supplied input current through the terminal conventionally common to its input and output circuits, which input current is split into two portions related as the gain of the current mirror amplifier. Either or both of these portions may be utilized as an output current.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: April 20, 1976
    Assignee: RCA Corporation
    Inventor: Otto Heinrich Schade, Jr.
  • CRT comprising strontium metal getter films and method of preparation
    Patent number: 3952226
    Abstract: Apertured-mask cathode-ray tube comprises a strontium metal getter film on at least a portion of the electron-beam-receiving surface of the mask. The method comprises sealing into the tube a mass comprising a strontium-aluminum alloy, heating the mass above 1100.degree.C until a substantial proportion of the strontium is liberated and vaporized, and condensing the vaporized strontium as a metal film on internal surfaces of the tube.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: April 20, 1976
    Assignee: RCA Corporation
    Inventor: John Coryell Turnbull
  • Eccentric core optical waveguide
    Patent number: 3950073
    Abstract: An eccentric core optical waveguide comprising at least one glass core having relatively large refraction index disposed in an outer cylindrical glass jacket having larger diameter than that of the glass core and relatively small refraction index. The one or more glass core being so arranged as to made tangential contact with the inner wall of the glass jacket or a dielectric thin film coated inside the jacket at a small area. The space between the glass core and the outer glass jacket or said thin film is filled by air.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: April 13, 1976
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Masaharu Horiguchi, Takao Edahiro, Kunio Masuno, Tadashi Miyashita, Shiro Takahashi
  • Device for measuring a signal having a very high noise level
    Patent number: 3950699
    Abstract: Device for measuring a signal having a very high noise level by an integrator circuit having an operational amplifier, characterized in that the device comprises a means for memorizing a voltage representative of the charge of the capacitor of the integrator circuit, a means for switching the voltage in the memory onto the integration capacitor to bring the voltage of that capacitor to a value close to the asymptotic integration value and a time base for controlling that switching and the reading of the final integration value.
    Type: Grant
    Filed: August 16, 1974
    Date of Patent: April 13, 1976
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Michel Brouant
  • Amplifier for random access computer memory
    Patent number: 3950709
    Abstract: An integrated circuit ram amplifier includes a feedback loop which produces an output pulse before the output from the random access memory has completed its transition from full voltage to ground, thus increasing the computer's response time. The integrated circuit amplifier may find particular application in microprocessors (e.g. 8 bit word length, single bus two phase clock microprocessors).
    Type: Grant
    Filed: October 1, 1974
    Date of Patent: April 13, 1976
    Assignee: General Instrument Corporation
    Inventors: Richard B. Rubinstein, Lamar T. Baker
  • Level indicating system
    Patent number: 3949294
    Abstract: A level indicating system adapted to provide an indication of the peak-level or the volume unit level of an input signal. The system is comprised of an amplifier to receive the signal; a first changeable time constant circuit; a second changeable time constant circuit coupled to the first time constant circuit; an indicator connected to the second time constant circuit; and a control circuit for changing the respective time constants of the first and second time constant circuits. The indicator selectively provides an indication of the peak-level of the signal or the volume unit of the signal depending upon the particular time constants of the time constant circuit.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: April 6, 1976
    Assignee: Sony Corporation
    Inventor: Shigeru Imura
  • Continuous ionization injector for low pressure gas discharge device
    Patent number: 3949260
    Abstract: Plasma chamber maintained ionized by thin wire discharge continuously supplies ionized plasma into the interelectrode space of a low pressure gas discharge device such as a crossed-field switch tube to eliminate dependence on statistical electrons for initiation of discharge.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: April 6, 1976
    Assignee: Hughes Aircraft Company
    Inventors: John R. Bayless, Robin J. Harvey
  • Apparatus for retaining articles in an array for testing
    Patent number: 3949295
    Abstract: Discrete semiconductor chips, such as sheet-diffused diodes are mass-tested after separation from a wafer. A carrier for retaining the chips in a predetermined array for testing has a plurality of cavities located in a planar surface and arranged in accordance with the predetermined array. The devices are loaded into the cavities and retained therein by a vacuum connected to each of the cavities. Electrical contact is made through the bases of the cavities to the bottom surfaces of the chips, while insulating walls of the cavities prevent leakage paths around the chips. The carrier is indexed in steps corresponding to the increments of the array to permit the top surface of each of the loaded chips to be contacted in sequence by a probe to establish electrical connection through such chip to a test set to test the chip.
    Type: Grant
    Filed: March 20, 1974
    Date of Patent: April 6, 1976
    Assignee: Western Electric Company, Inc.
    Inventor: George G. Moorshead
  • Method and means for suppressing ozone generated by arc lamps
    Patent number: 3949258
    Abstract: A method and means for suppressing ozone generated by high pressure xenon arc lamps and similar luminous discharge arc lamps of a type normally generating ozone. The ozone-generating lamp is enclosed in a gas-tight housing having a quartz or sapphire light emission window able to transmit light including ultraviolet. The housing has metal cover plates on its various sides acting as heat sinks, each of which has a large number of external heat-radiating fins. Clearance is provided inside the housing sufficient to cause the ozone formed by short wavelengths to be broken down by thermal contact with the lamp and to be thus converted into stable O.sub.2. The heat generated by the lamp in the housing is transferred to the walls of the housing and is dissipated by the external heat-radiating fins. The inner surfaces of the cover plates are blackened to absorb waste light.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: April 6, 1976
    Assignee: Baxter Laboratories, Inc.
    Inventor: Charles Soodak
  • Display panel
    Patent number: 3949261
    Abstract: The display panel comprises a first insulating plate which carries a set of pins to which a first set of wires and other electrodes can be attached, and a second similar insulating plate having a set of pins to which a second set of wires and other electrodes can be secured. A set of cathodes is disposed between the two plates oriented at an angle to the first and second arrays of electrodes to form a dot matrix therewith. The cathodes are electrically connected to selected pins. One insulating plate is secured to the panel base plate to form one complete sub-assembly, and the other insulating plate is secured to the panel face plate to form another complete sub-assembly, and the two sub-assemblies are sealed together hermetically to form the completed panel.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: April 6, 1976
    Assignee: Burroughs Corporation
    Inventor: Edgar L. Harvey