Patents Examined by Maynard R. Wilbur
  • Hydraulic synchronizing system for coordinating movement of the vibrator guide rods
    Patent number: 4161229
    Abstract: A hydraulic synchronizing system which comprises a double piston power source and a drain valve in fluid communication with the hydraulic lift cylinders of a vehicle mounted vibratory seismic energy source. The double piston power source supplies the hydraulic lift cylinders with substantially equal volumes of hydraulic fluid, and the drain valve adjusts the flow of hydraulic fluid out of the hydraulic lift cylinders. The system synchronizes the operation of the hydraulic lift cylinders and thus coordinates movement of the vibrator guide rods relative to the vehicle upon which the vibrator is mounted.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: July 17, 1979
    Assignee: Exxon Production Research Company
    Inventor: Joseph F. Mifsud
  • Power-dividing and modulating arrangement
    Patent number: 4160960
    Abstract: A power divider and modulator is disclosed comprising a HF signal source which supplies a carrier signal to a pair of 1/4.lambda. transformers each terminated with a variable impedance, whose impedance value is controlled by a modulating signal from a signal source. The amplitude of the carrier signal is modulated by a signal proportional to the sum of the two modulating signals to obtain a reflection free termination at the output of the HF signal source.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: July 10, 1979
    Assignee: U.S. Philips Corporation
    Inventor: Pieter Bikker
  • Method and apparatus for providing reference points for mounting the magnetic deflection unit of a color display tube
    Patent number: 4160935
    Abstract: The position of the electron beam axis of the central gun of an in-line tube is determined by moving the tube relative to a dynamic, multipole magnetic field produced by an electro-magnet mounted about the tube neck until a dot is displayed on the display screen. The line passing through the center of the field and the dot on the display screen defines the position of the beam axis and reference points related to that line are then provided on the tube envelope which locate the deflection unit so that its axis coincides with the beam axis.
    Type: Grant
    Filed: September 7, 1977
    Date of Patent: July 10, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Theodorus C. Groot, Pieter Huijer, Johannes G. VAN Lent
  • Correction circuit for wide bandwidth antenna
    Patent number: 4160975
    Abstract: In a radar system employing an array antenna and microwave circuitry coupled thereto for developing sum and difference signals, a correction circuit utilizes the sum and difference signals for providing increased accuracy to elevation and azimuthal angle measurements of wide bandwidth radar signals. A correction is applied to the difference signal by subtracting therefrom a weighted time derivative of the sum channel, the weighting being proportional to the boresight error slope and the sines of the elevation and azimuth angles.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: July 10, 1979
    Assignee: Raytheon Company
    Inventor: Fritz Steudel
  • Analogue storage and processing system
    Patent number: 4160249
    Abstract: A system for the simultaneous storage of a plurality of components of data signals and for the retrieval and the processing thereof. The system includes a signal source coupled to a record unit that is synchronized by a record controller. A plurality of cathode ray tubes and optical imaging means are included in the record unit for storing the plurality of simultaneously occurring input signal components on a photographic film in an interleaved pattern. A single readout device scans the film in a direction transverse to the record pattern to develop read signals which are processed by a readout processor and an analyzer and then displayed on a display unit. The readout unit synchronizes the readout processor, the analyzer and the display unit.
    Type: Grant
    Filed: May 8, 1967
    Date of Patent: July 3, 1979
    Assignee: Hughes Aircraft Company
    Inventor: Joseph R. Kotlarski
  • Method of determining the direction of a radio source and radio interferometer system
    Patent number: 4160252
    Abstract: Method of determining the direction of a radio source, wherein, using a circular array of aerials, a sinusoidal phase graph is determined and the direction of the radio source relative to a reference direction is determined from one or more zero crossings of the phase graph.
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: July 3, 1979
    Assignee: U.S. Philips Corporation
    Inventors: David A. Lucas, Richard P. Vincent
  • Hybrid dual mode radiometric system
    Patent number: 4160251
    Abstract: An improved high frequency radiometric system features time shared passive and active modes of operation for correlation of active and passive signal returns. The processed, normalized, and stored passive signals are subtracted from similarly treated active signals to suppress the effect of returns from back ground terrain, thus enhancing true target recognition. A second channel provides discrimination against jamming and spurious signals, thus reducing false alarms.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: July 3, 1979
    Assignee: Sperry Rand Corporation
    Inventors: Robert E. Lazarchik, Robert S. Roeder
  • Automatic direction finder antenna preamplifier processor
    Patent number: 4158843
    Abstract: A relatively small directional loop antenna adapted for use in an airborne automatic direction finder (ADF) is made to perform like a physically larger loop while being broadly tuned to a mean operating frequency. The total input equivalent noise source is kept low by coupling the loop into an impedance comprised of an active circuit. The active circuit is designed in conjunction with an active feedback circuit into which the ADF sense antenna is fed to maintain a relatively constant phase difference between the ADF loop and sense signals.
    Type: Grant
    Filed: January 23, 1978
    Date of Patent: June 19, 1979
    Assignee: The Bendix Corporation
    Inventor: Ray W. Kuchy
  • Method and apparatus for the control of the safety distance of a vehicle relative to preceding vehicles
    Patent number: 4158841
    Abstract: A method and apparatus for the control of the safety distance of a vehicle with respect to preceding objects wherein various measurements and controls are effected so as to provide control magnitudes for enabling prevention of a collision of the vehicle with an object.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: June 19, 1979
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Erwin Wuchner, Ulrich Heitmeyer, Walter Kostelezky
  • Receiver bandwidth conservation in a Doppler radar
    Patent number: 4158202
    Abstract: A Doppler radar having a single sense Doppler signal from the rf mixer. A single sideband modulator in a common antenna system for transmitting and receiving shifts the fore and aft beams to achieve a single sense Doppler signal. The use of the single sideband modulator results in a differential Doppler shift between fore and aft beams of only a few hundred knots, thereby permitting use of low cost components. A single sense Doppler also reduces the Doppler passband by a 2:1 factor which permits the power supply frequency to operate at a higher frequency than the receiver.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: June 12, 1979
    Assignee: The Singer Company
    Inventors: Theodore Hubka, Robert W. Slater
  • Television receiver vertical deflection system and method
    Patent number: 4157487
    Abstract: To permit use of a circuit in which the energy derived during horizontal flyback is used to control vertical deflection, without damage to the vertical deflection system upon vertical flyback, the vertical deflection output stage is dimensioned to have a time constant which is less, preferably about half, of the time constant of the sawtooth wave generator controlling vertical deflection. The vertical deflection output stage forms, in essence, a parallel oscillatory circuit which, to provide the lesser time constant, is damped.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: June 5, 1979
    Assignee: Blaupunkt-Werke GmbH
    Inventor: Werner Riechmann
  • Autocorrelation sidelobe suppression device for a continuous periodic phase-coded signal
    Patent number: 4156876
    Abstract: A device for suppressing autocorrelation sidelobes in a pseudo-random coded radar system employing a phase-coded CW signal in which the phase code is preselected to have a predetermined symmetry. Autocorrelation is affected in the standard manner and also in respect to the transmitted code shifted by one bit in time. Summation of the two autocorrelation functions provides a new autocorrelation function in which the sidelobes between main correlation peaks are suppressed.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: May 29, 1979
    Assignee: International Standard Electric Corporation
    Inventor: Jean-Claude A. Debuisser
  • Range gate generator with velocity aiding
    Patent number: 4156875
    Abstract: Apparatus and method for controlling the operation of a range gate generator used in a pulse radar is shown. In accordance with the disclosure, the position of the range gate, or gates, out of the range gate generator is controlled from pulse to pulse primarily in accordance with the Doppler velocity of a selected target and the pulse repetition interval of the pulse radar with a periodic correction in accordance with the range of such target.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: May 29, 1979
    Assignee: Raytheon Company
    Inventors: Philip A. Keane, Arthur J. Torino, Jr.
  • In null steering apparatus a reference to spread spectrum signals
    Patent number: 4156877
    Abstract: A transmitter for transmitting a desired signal composed of a carrier modulated by a pseudorandom noise code and periodic bursts of data and a receiver including null steering apparatus wherein the desired signal is applied to a demodulator for removing the PN code, or collapsing the spectrum of the signal, and the collapsed signal is demodulated to provide the data and the carrier, after which the carrier is remodulated with the PN code to provide a reference signal between bursts of data for the null steering apparatus to form a lobe in the antenna pattern in the direction of reception of the desired signal.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: May 29, 1979
    Assignee: Motorola, Inc.
    Inventor: Gregory H. Piesinger
  • System for providing angular deviation data for locating a transmitter
    Patent number: 4156240
    Abstract: Disclosed is a system for locating a transmitter arranged for transmitting frequency-modulated signals. The system supplies data about the angular deviation between the direction of the transmitter considered from a reference point and a reference axis passing through that point and comprises two antennas disposed on the reference axis symmetrically relative to the reference point, and a receiver having two mixers which receive, on the one hand, the respective signals from the two antennas through time delay elements and, on the other hand, the signal from one of the antennas through a circuit which provides, during a given period of time, a linear phase shift. The beat frequencies at the mixer outputs are measured by frequency meters during said time period and the desired information is given by the relative deviation between the output signals of the two frequency meters.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: May 22, 1979
    Assignee: U.S. Philips Corporation
    Inventor: Raymond Strauch
  • Dual frequency transmission apparatus for frequency-agile radar systems utilizing MTI techniques
    Patent number: 4155088
    Abstract: This invention discloses pulse radar apparatus for the transmission of radar pulses having a pair of frequencies in each rf pulse. One of the frequencies transmitted in each pulse is repeated in the succeeding pulse while the other frequency is changed to a new frequency. Moreover, the repeated frequency appears in the same relative position in the pulse pair as in its original occurrence.
    Type: Grant
    Filed: February 20, 1967
    Date of Patent: May 15, 1979
    Assignee: Westinghouse Electric Corp.
    Inventors: John W. Taylor, Jr., Albert L. Sinclair
  • Solar energy collector
    Patent number: 4153474
    Abstract: A solar panel is constructed from plural parabolic-cylindrical mirrors arranged side by side, and each mirror has three functions. Its concave ground focusses solar energy, its convex rear carries a strip-like solar cell being thereby disposed close to the focal line of the adjacent mirror, while the rest of the rear surface and possibly also the ground surface dissipates thermal energy.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: May 8, 1979
    Assignee: Erno Raumfahrttechnik GmbH
    Inventor: Dietrich Rex
  • Method of and apparatus for unambiguous radio navigation
    Patent number: 4151528
    Abstract: This disclosure deals with the use of groups of unambiguous radio-frequency pulse transmissions for Loran C and similar radio navigation, eliminating cycle-selection ambiguity and reducing the required power level for transmission.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: April 24, 1979
    Assignee: Megapulse, Incorporated
    Inventor: Paul R. Johannessen
  • Ranging system for guiding moving objects over equidistant tracks
    Patent number: 4150377
    Abstract: A ranging system for guiding moving objects over equidistant tracks comprises a ground station and airborne equipment. The ground station includes a receiver and a transmitter connected to each other and to an aerial.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: April 17, 1979
    Inventors: Vladimir A. Milov, Igor I. Injutkin, Alexandr G. Polivoda, Gennady A. Ermakov, Jury G. Negry, Valery V. Ponomarenko, Evgeny I. Starchenko
  • Side-looking radar systems
    Patent number: 4150376
    Abstract: The invention provides a side-looking radar for use on a moving carrier and for exploring space laterally with respect to the displacement direction of the carrier. The receiver includes a non-coherent detector having a reference signal input. The average differential phase between the phases of successive received echo pulses appearing at the output of the detector is evaluated and utilised to control a phase shifting arrangement so as to bring the phases of the successive received echo pulses into alignment and establish coherence between the detector and the radar transmitter.
    Type: Grant
    Filed: December 1, 1977
    Date of Patent: April 17, 1979
    Assignee: The Marconi Company Limited
    Inventors: John H. Blythe, Seville R. Brooks