Plural Transducer Array Patents (Class 367/153)
  • Patent number: 10618078
    Abstract: In some examples, a CMUT may include a plurality of electrodes, and each electrode may include a plurality of sub-electrodes. For instance, a first sub-electrode and a second sub-electrode may be disposed on opposite sides of a third sub-electrode. In some cases, a first bias voltage may be applied to the third sub-electrode and a second bias voltage may be applied to the first and second sub-electrodes while causing at least one of the first sub-electrode, the second sub-electrode, or the third sub-electrode to transmit and/or receive ultrasonic energy. For example, the second bias voltage may be applied at a different voltage amount than the first bias voltage, and/or may be applied at a different timing than the first bias voltage.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: April 14, 2020
    Assignee: Kolo Medical, Ltd.
    Inventors: Danhua Zhao, Xuefeng Zhuang, Yongli Huang
  • Patent number: 10605599
    Abstract: A gradient sensor device includes a support structure providing a surface, and at least three particle motion sensors coupled with and/or arranged on the support structure to measure translational data in a first direction. The particle motion sensors have an arrangement that enables calculation of a spatial gradient of the translational data in a second direction different from the first direction.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: March 31, 2020
    Assignee: WESTERNGECO L.L.C.
    Inventors: Everhard Johan Muijzert, Pascal Guillaume Edme
  • Patent number: 10293374
    Abstract: Provided is a capacitive transducer including an element including a plurality of cells supported such that a vibrating membrane including one of a pair of electrodes formed with an gap inbetween is capable of vibration, wherein a distance between a pair of electrodes of a cell in an end portion of the element is greater than that between a pair of electrodes of a cell in a middle portion of the element.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: May 21, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazutoshi Torashima, Kenichi Nagae
  • Patent number: 10267939
    Abstract: Disclosed are methods of marine 3D seismic data acquisition that do not require compensation for winds and currents.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: April 23, 2019
    Assignee: CONOCOPHILLIPS COMPANY
    Inventors: Peter M. Eick, Joel D. Brewer, Charles Clinton Mosher
  • Patent number: 10189049
    Abstract: A side lobe in a capacitive transducer is reduced. Provided is a capacitive transducer including an element including a plurality of cells supported such that a vibrating membrane including one of a pair of electrodes formed with an gap between the electrodes is capable of vibration, wherein a distance between cells in an end portion of the element is greater than a distance between cells in a middle portion of the element.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: January 29, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazutoshi Torashima, Kenichi Nagae
  • Patent number: 9816373
    Abstract: An electro-acoustic system for downhole telemetry is provided herein. The system employs a series of communications nodes spaced along a string of casing within a wellbore. The nodes are placed within the annular region surrounding the joints of casing within the well-bore. The nodes allow for wireless communication between transceivers residing within the communications nodes and a topside communications node at the wellhead. More specifically, the transceivers provide for node-to-node communication up a wellbore at high data transmission rates for data indicative of a parameter within an annular region behind the string of casing. A method of evaluating a parameter within an annular region along a cased-hole wellbore is also provided herein. The method uses a plurality of data transmission nodes situated along the casing string which send signals to a receiver at the surface. The signals are then analyzed.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: November 14, 2017
    Assignee: ExxonMobil Upstream Research Company
    Inventors: David A. Howell, Timothy I. Morrow, Mark M. Disko, Max Deffenbaugh
  • Patent number: 9678201
    Abstract: An ultrasonic transducer includes a substrate; and a plurality of capacitive ultrasonic cells arranged on the substrate in a predetermined direction. Thicknesses of cavities in the plurality of capacitive ultrasonic cells are determined based on locations of the plurality of capacitive ultrasonic cells in the predetermined direction.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: June 13, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dong-kyun Kim
  • Patent number: 9654893
    Abstract: Provided herein is a multichannel sound recording array having an elongated body and a plurality of arms provided at fixed angles relative to a center position of a recording field to enhance sound localization in a surround sound recording.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 16, 2017
    Inventors: Stephen Xavier Estrada, Nicholas Alexander Knickerbocker
  • Patent number: 9534949
    Abstract: The present invention relates to a pre-collapsed capacitive micro-machined transducer cell (10) comprising a substrate (12), and a membrane (14) disposed above a total membrane area (Atotal), wherein a cavity (20) is formed between the membrane (14) and the substrate (12), the membrane comprising a hole (15) and an edge portion (14a) surrounding the hole (15). The cell (10) further comprises a stress layer (17) on the membrane (14), the stress layer (17) having a predetermined stress value with respect to the membrane (14), the stress layer (17) being adapted to provide a bending moment on the membrane (14) in a direction towards the substrate (12) such that the edge portion (14a) of the membrane (14) is collapsed to the substrate (12). The present invention further relates to a method of manufacturing such pre-collapsed capacitive micro-machined transducer cell (10).
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: January 3, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Peter Dirksen, Ronald Dekker, Vincent Adrianus Henneken, Adriaan Leeuwestein, Bout Marcelis, John Douglas Fraser
  • Patent number: 9459715
    Abstract: Detecting a location of a touch input on a surface of a propagating medium is disclosed. A transmitter coupled to the propagating medium emits a signal. The signal is received using a receiver coupled to the propagating medium. The receiver is configured to receive the signal from the transmitter to at least in part detect the location of the touch input as indicated by an effect of the touch input on the signal. Spectral control of the signal is performed.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: October 4, 2016
    Assignee: Sentons Inc.
    Inventors: Samuel W. Sheng, Shih-Ming Shih, Shirish A. Altekar
  • Patent number: 9448272
    Abstract: A mechanism is described for determining whether or not a ground connection is properly earthed by determining whether or not a potential difference exists between a voltage measuring point and a ground connection. A first capacitor is connected between the ground connection and a first power line and a first duplicating capacitor (having the same capacitance as the first capacitor) is connected between the voltage measuring point and the first power line. If the determining step determines that the potential difference does not exist, then it is determined that the ground connection is not properly earthed.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: September 20, 2016
    Assignee: Danfoss A/S
    Inventor: Nils-Ole Harvest
  • Patent number: 9354346
    Abstract: An acoustic source for generating an acoustic beam includes a housing; a plurality of spaced apart piezo-electric layers disposed within the housing; and a non-linear medium filling between the plurality of layers. Each of the plurality of piezoelectric layers is configured to generate an acoustic wave. The non-linear medium and the plurality of piezo-electric material layers have a matching impedance so as to enhance a transmission of the acoustic wave generated by each of plurality of layers through the remaining plurality of layers.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 31, 2016
    Assignees: LOS ALAMOS NATIONAL SECURITY, LLC, CHEVRON U.S.A. INC.
    Inventors: Cung Khac Vu, Dipen N. Sinha, Cristian Pantea
  • Patent number: 9291512
    Abstract: A sensor for measuring pressure and/or force includes at least one measuring assembly having at least one piezoelectric measuring element subjected to compressive stress for dynamic pressure and/or force measurement, and a diaphragm for introducing the pressure and/or the force onto at least the piezoelectric measuring element. The sensor also includes a further measuring assembly that is based on a different physical measuring principle for measuring static pressure and/or force.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 22, 2016
    Assignee: Piezocryst Advanced Sensorics GmbH
    Inventors: Alexander Schricker, Andreas Mayer, Dietmar Kröger
  • Patent number: 9268020
    Abstract: A sonar transducer assembly includes a housing mountable to a water craft capable of traversing a surface of a body of water. The sonar transducer assembly includes a linear downscan transmit/receive transducer element positioned within the housing, aimed downwardly, and configured to transmit sonar pulses in the form of a fan-shaped beam perpendicular to a plane of the surface of the water, and further configured to receive sonar returns from the sonar pulses and convert sound energy of the sonar returns into downscan sonar return data. The sonar transducer assembly also includes at least one sidescan receive-only transducer element positioned within the housing, aimed outwardly and downwardly, and configured to receive sonar returns from the sonar pulses and convert sound energy of the sonar returns into sidescan sonar return data.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: February 23, 2016
    Assignee: Navico Holding AS
    Inventor: Aaron Richard Coleman
  • Patent number: 9261489
    Abstract: A tool for manipulating a transducer assembly. The tool had a shaft to space the transducer assembly from a handle end. The tool rotatably mounts the transducer assembly so that the transducer assembly can transmissively coupled to and follow an arcuate scanning path. The tool includes a guide member for following an edge of a component to be tested.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: February 16, 2016
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventor: Terence Jones
  • Patent number: 9153767
    Abstract: Disclosed herein are an ultrasonic probe having a backing layer formed of a structure which varies acoustic impedance and a manufacturing method thereof. The ultrasonic probe includes a piezoelectric layer and a backing layer provided on a rear surface of the piezoelectric layer, and the backing layer includes a plurality of kerfs formed on a front surface thereof in a lengthwise direction, the front surface being adjacent to the rear surface of the piezoelectric layer, and the kerfs are formed such that the intervals between the kerfs are varied.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dong Hyun Kim
  • Patent number: 9017262
    Abstract: Methods and systems for connection to a transducer in ultrasound probes are provided. One connection arrangement includes a connector having a transducer connection portion configured to couple to a transducer of an ultrasound probe and a scan head connection portion configured to extend from a scan head of the ultrasound probe containing the transducer. The transducer connection portion and the scan head connection portion being a single element.
    Type: Grant
    Filed: January 2, 2012
    Date of Patent: April 28, 2015
    Assignee: General Electric Company
    Inventors: Reinhold Bruestle, Wolfgang Dieter Knoll, Christian Heinrich, Christian Holl
  • Patent number: 8982662
    Abstract: A multi-component sensor of a fluid-borne acoustic wave that senses pressure and up to three orthogonal particle motion components. The sensor is unresponsive to motion of the sensor mount. Furthermore, the sensor is substantially unresponsive to the turbulent flow of the acoustic medium past the sensor.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: March 17, 2015
    Assignee: ION Geophysical Corporation
    Inventors: Robert E. Rouquette, Andre′ W. Olivier, Dale J. Lambert
  • Patent number: 8854922
    Abstract: The invention relates to a source device for the emission of seismic waves designed to operate by being towed by a vessel. The source device according to the invention comprises at least three support-beams, a plurality of guns placed along each support-beam, a central hub receiving one end of support-beams and arranged such that support-beams can be deployed according to a star-like geometry, and the means to keep support-beams in this geometry during operation.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: October 7, 2014
    Assignee: Cggveritas Services SA
    Inventors: Behzad Vahida, Thierry Payen
  • Patent number: 8830786
    Abstract: Techniques are disclosed herein relating to distribution of fluids. These techniques may be useful in, for example, supplying pressurized air to seismic sources (or arrays of seismic sources), such as those used in marine seismic operations. Some embodiments of this disclosure include a pipe that passes through a fluid distribution block. The pipe may be configured such that it is able to slide along and/or twist about a longitudinal axis of the distribution block. This technique may reduce the effects of the various stresses that may operate on marine seismic source equipment as it is towed through a body of water.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 9, 2014
    Assignee: PGS Geophysical AS
    Inventor: Karl Petter Elvestad
  • Patent number: 8792306
    Abstract: Apparatuses and methods for attracting aquatic animals are provided. In one embodiment, an apparatus for attracting aquatic animals includes a submersible speaker adapted to emit a pre-recorded sound for attracting an aquatic animal. The pre-recorded sound includes tactile sound. The apparatus also includes a controller in communication with the submersible speaker. The controller is adapted to be coupled to an above-water portion of a boat. The controller includes a user interface comprising one or more user-selectable options. The controller is adapted to send a signal to the submersible speaker in response to detecting a selection of one of the user-selectable options, and the submersible speaker emits the pre-recorded, sound in response to receiving the signal.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: July 29, 2014
    Inventors: Robert Harold Palmer, Eugene Joseph Eisenmann, Jr.
  • Publication number: 20140185412
    Abstract: Disclosed arc methods and systems for using a rigid-stem assembly comprising a plurality of interconnected rigid stems in a marine survey. An embodiment discloses a geophysical sensor streamer comprising a rigid-stem assembly comprising a plurality of rigid stems that are interconnected and each comprise a stem body defining, one or more interior chambers, wherein a geophysical sensor is incorporated into one or more of the rigid stems.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicant: PGS Geophysical AS
    Inventor: Rune Sindre Voldsbekk
  • Patent number: 8707785
    Abstract: A portable apparatus for determining testing the condition of a machine or device using ultrasonic signals with an array of ultrasonic sensors for receiving an ultrasonic signal transmitted from the machine or device. The apparatus possesses a heterodyne circuit coupled to receive the output signals from the ultrasonic sensors and convert the output signals to a heterodyned audio signal to be analyzed via a digital spectrum analyzer integral to the portable apparatus. The digital spectrum analyzer performs real-time fast fourier transformations on the heterodyned audio signal. After analyzing the signals, the hand held device uses a variety of audiovisual cues to direct a user to portions of the machine in need of repair or monitoring.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: April 29, 2014
    Assignee: U.E. Systems, Inc.
    Inventors: Mark A. Goodman, William Bishop, Gary Mohr
  • Patent number: 8670291
    Abstract: A termination for an end of a braid formed as a flat closed loop of braided strands expandable to an annular cylinder having a selected wall thickness includes a sleeve having a selected internal diameter. Spacers are configured to be applied on the braid such that when in contact with each other form an annular cylinder having an external diameter selected to fit inside the sleeve. The spacers have a bevel at one longitudinal end. A substantially cylindrical insert has a bevel at one longitudinal end at substantially a same bevel angle as on the spacers. A diameter of the insert combined with twice the wall thickness of the braid is larger than an internal diameter the spacers. When axial tension is applied to the braid, the bevel on the insert with braid thereon laterally urges the spacers outward. The sleeve limits lateral outward movement of the spacers.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: March 11, 2014
    Assignee: PGS Geophysical AS
    Inventor: Clet Antoine Landry
  • Patent number: 8665669
    Abstract: Disclosed is an acoustic signal detector for detecting a target with moving in water. The acoustic signal detector may include a body having a front portion, the front portion having a cross section which becomes gradually narrow and an end formed to have a plane. The plane may be perpendicular to a moving direction of the acoustic signal detector. The acoustic signal detector may further include a plurality of sensor arrays configured to generate sound and detect sound returned by being reflected by a target. The plurality of sensor arrays may be mounted on a side surface of the front portion and on the plane.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: March 4, 2014
    Assignee: Agency for Defense Development
    Inventors: Woo-Shik Kim, Dae-Won Do, Sang-Moon Choi, Dong-Hoon Lee
  • Patent number: 8625388
    Abstract: A seismic survey apparatus includes a plurality of serially connected electrical nodes; a power supply capable of supplying power to the electrical nodes and detecting a voltage leakage among the electrical nodes; and a software component capable of locating the leakage upon its detection. A method for use in seismic surveying includes powering a plurality of serially connected electrical nodes in a seismic surveying system; automatically detecting a voltage leakage among the electrical nodes on the power domain; and automatically locating the detected voltage leakage.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: January 7, 2014
    Assignee: WesternGeco L.L.C.
    Inventors: Jostein Fonneland Pettersen, Sylvain Petithomme
  • Publication number: 20130315036
    Abstract: A multiple axis sensor assembly includes an enclosure and encapsulated microelectromechanical system (MEMS) sensors. The encapsulated sensors are disposed inside the enclosure and are mounted in different orientations, which correspond to different axes of the sensor assembly. A controller of the sensor assembly is disposed in the enclosure and electrically coupled to the MEMS sensors.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 28, 2013
    Applicant: WESTERNGECO L.L.C.
    Inventors: Hans Paulson, Vidar A. Husom, Nicolas Goujon
  • Patent number: 8561754
    Abstract: A marine source sub-array and method for generating a pressure wave in a body of water. The marine source sub-array includes a float configured to float in the body of water; base plates connected to the float through cables; plural individual source elements connected to the base plates and configured to generate pressure waves underwater; and a coverage plate located between the plural individual source elements and the float. The coverage plate has a surface area larger than a surface area of the float.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 22, 2013
    Assignee: Cggveritas Services SA
    Inventor: Yuan Ni
  • Patent number: 8559264
    Abstract: A method for acquiring seismic data. The method may include towing one or more seismic streamers in the water, towing a first air gun array and a second air gun array in the water at a first depth, and towing a third air gun array and a fourth air gun array in the water at a second depth greater than the first depth. While towing the air gun arrays, the first and second air gun arrays and the third and fourth air gun arrays may be separated by a cross line distance that depends on a separation between the seismic streamers. The method may also include firing seismic energy, by the first, second, third and fourth air gun arrays, through the water into the earth. After firing the seismic energy, the method may record seismic signals reflected from strata in the earth beneath the water.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: October 15, 2013
    Assignee: WesternGeco L.L.C.
    Inventor: Nicolae Moldoveanu
  • Patent number: 8534959
    Abstract: A deployment and retrieval apparatus for ocean bottom seismic receivers, the apparatus being a remotely operated vehicle (ROV) having a carrier attached thereto and carrying a plurality of receivers. The carrier comprises a frame in which is mounted a structure for seating and releasing said receivers. The structure may comprise a movable carousel or a movable conveyor or fixed parallel rails or a barrel. The structure includes a discharge port on said frame and a discharge mechanism for removing and retrieving said receivers. A method for deployment and retrieval of ocean bottom seismic receivers comprises the steps of loading a carrier with a plurality of receivers, attaching said carrier to an ROV, utilizing said ROV to transport the carrier from a surface vessel to a position adjacent the seabed and thereafter utilizing said ROV to remove receivers from said carrier and place the receivers on the seabed.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: September 17, 2013
    Assignee: Fairfield Industries Incorporated
    Inventors: James N. Thompson, Clifford H. Ray, Glenn D. Fisseler, Roger L. Fyffe, Stephen W. Mitchell, William E. Boone
  • Patent number: 8515094
    Abstract: Systems and methods for parallel and distributed processing of audio signals produced by a microphone array are described. In one aspect, a distributed signal processing system includes an array of microphones and an array of processors. Each processor is connected to one of the microphones and is connected to at least two other processors, enabling communication between adjacent connected processors. The system also includes a computing device connected to each of the processors. Each microphone detects a sound and generates an audio signal, and each processor is configured to receive and process the audio signal sent from a connected microphone and audio signals sent from at least one of the adjacent processors to produce a data stream that is sent to the computing device.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 20, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Amir Said, Ton Kalker, Majid Fozunbal
  • Patent number: 8508106
    Abstract: An electroacoustic transducer is provided, particularly for use in an apparatus for medical shock-wave treatment. The transducer includes several piezoelements arranged next to one another, which are embedded in a composite mass in a carrier-free manner.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 13, 2013
    Assignee: Richard Wolf GmbH
    Inventor: Edgar Bauer
  • Patent number: 8509034
    Abstract: A hydrophone for recording underwater sound includes a housing having an outer surface designed to serve as a boundary surface for an incident sound wave and at least one vibration sensor having a sensor surface for recording sound waves and for preparing a sensor signal. The sensor surface of the vibration sensor is in an opening of the housing. A hydrophone assembly includes a plurality of the hydrophones.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: August 13, 2013
    Inventor: Timo Klinge
  • Patent number: 8477561
    Abstract: A seismic streamer system for acquiring seismic data includes a plurality of first cable sections each employing a first sensor configuration therein, and at least one second cable section operatively connected to one or more of the first cable sections and employing a second sensor configuration therein. In various embodiments of the streamer system, one or more of the second cable sections are sparsely integrated into a streamer, a streamer array, and/or a seismic spread. The first sensor configuration may, e.g., include a conventional hydrophone distribution, and the second sensor configuration may, e.g., include multicomponent sensors such as at least one of a particle velocity sensor, a pressure gradient sensor, an accelerometer, and a combination thereof. The present invention is useful for attenuating noise in the measured seismic data as well as deghosting the data.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: July 2, 2013
    Assignee: WesternGeco L.L.C.
    Inventors: Rohitashva Singh, Johan O. A. Robertsson, Ottar Kristiansen
  • Publication number: 20130142013
    Abstract: An anti-biofouling casing for a seismic streamer is provided, the casing comprising an outer-skin, the outer skin comprising a mix of a base material and a molecular additive, wherein the molecular additive is localized throughout the base material and the molecular additive is configured to impart a high contact angle and/or a low surface energy to an outer surface of the anti-biofouling casing to prevent adhesion of living organism thereto. The outer-skin may comprise a casing/skin for a seismic streamer such that the streamer skin comprises a base material with a hydrophobic molecular additive distributed throughout the streamer skin.
    Type: Application
    Filed: November 15, 2010
    Publication date: June 6, 2013
    Applicant: WESTERNGECO L.L.C.
    Inventors: Robert Seth Hartshorne, Gary John Tustin, Joseph Hannah
  • Publication number: 20130083622
    Abstract: A method, system and a marine node for recording seismic waves underwater. The node includes a body made of a compressible material that has a density similar to a density of the water; a first sensor located in the body and configured to record pressure waves; and a second sensor located in the body and configured to record three dimensional movements. The body is coupled to the water for passing the seismic waves to the first and second sensors.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 4, 2013
    Applicant: CGGVERITAS SERVICES SA
    Inventors: Philippe HERRMANN, Romain SOUBEYRAN, Robert DOWLE
  • Publication number: 20130051176
    Abstract: Some embodiments of the disclosed invention include a method for acquiring marine seismic data using solid streamers in a curved pattern. Streamers can be towed in a curved pattern within a body of water. While being towed in the curved patter the source may be fired and response data can be collected by the streamers as they are towed through the water in the curved/circular pattern. These streamers can be solid streamers and can be filled with a gel like substance. Moreover, the streamers can be placed at various known depths within the body of water.
    Type: Application
    Filed: December 24, 2010
    Publication date: February 28, 2013
    Applicant: WESTERNGECO L.L.C.
    Inventors: Gary John Tustin, Steven Antony Gahlings, Robert Hughes Jones
  • Publication number: 20130039153
    Abstract: An anti-biofouling casing for a seismic streamer is described, the anti-biofouling casing including a polymer system having a hydrophobically-modified base polymer, the hydrophobically-modified base polymer including a base polymer having a backbone and a hydrophobically derivatized chain extender coupled to the backbone of the base polymer. The polymer system including between about 0.1% and 10% of the hydrophobically derivatized chain extender by weight. The anti-fouling casing including a hydrophobic surface that serves to prevent biofouling of the surface.
    Type: Application
    Filed: July 19, 2012
    Publication date: February 14, 2013
    Applicant: WESTERNGECO L.L.C.
    Inventors: ROBERT SETH HARTSHORNE, GARY JOHN TUSTIN
  • Patent number: 8335131
    Abstract: An acoustic transducer array element includes a plurality of individual or transducer assemblies or “drivers” which are combined in a closely spaced geometry to form the array element. The respective transducer assemblies within each array element are acoustically coupled with each other. The invention utilizes such mutual coupling between the closely spaced transducers assemblies to provide improved acoustic performance.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: December 18, 2012
    Assignee: Undersea Sensor Systems, Inc.
    Inventor: Timothy P. Rorick
  • Publication number: 20120275275
    Abstract: Method and an anti-attachment device configured to be provided on a streamer. The anti-attachment device includes a body configured to be provided around the streamer and a first end is configured to be rotatably attached to the streamer.
    Type: Application
    Filed: April 24, 2012
    Publication date: November 1, 2012
    Applicant: CGGVERITAS SERVICES SA
    Inventor: Hélène TONCHIA
  • Patent number: 8246545
    Abstract: A phased array ultrasound transducer is made from a plurality of independently excitable elements that are arranged in a row in the azimuthal direction, configured so that azimuthal aiming of an outgoing ultrasound beam is controlled by timing the excitation of the elements. The geometry of the elements is configured to focus the outgoing beam in the elevation direction so as to improve the images of target regions located at or about a particular radial distance. In some embodiments, this is accomplished by forming each element from a plurality of subelements that are stacked in the elevation direction, with the subelements of any given element all (a) wired together and (b) positioned at about the same distance from a substantially rod-shaped focal region.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: August 21, 2012
    Assignee: Imacor Inc.
    Inventors: Harold M. Hastings, Scott L. Roth
  • Patent number: 8229141
    Abstract: A transducer array assembly includes a support structure having a plurality of predetermined openings therein for accommodating transducer components. Flexible circuits are embedded in the support structure. Each flexible circuit has first ends being positioned in the support structure predetermined openings. Terminal blocks are joined to the second ends. Transducer elements are positioned in the support structure predetermined openings and placed in electrical communication with the flexible circuit first ends. A polymer material is provided surrounding the transducer elements, said support structure, and said flexible circuit first ends. There is also provided a method for manufacturing the transducer array.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: July 24, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Kim C. Benjamin
  • Patent number: 8223592
    Abstract: An acoustic radiator for underwater application is provided by opposing boundaries mutually spaced and centered on a common axis, a plurality of radial barriers located perpendicular to and connected between the top and bottom boundaries to define a plurality of adjacent radial waveguides, and a plurality of transducers disposed in each radial waveguide, and with one group of transducers being located radially outwardly from another group, the groups being defined in part by all members of the group being the same distance from the apex of the radial waveguide.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: July 17, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8218398
    Abstract: An omni-directional acoustic horn for applications in a liquid transmission medium deploys a plurality of transducers distributed along an interior face of the horn to radiate against an opposed surface. The arrangement mimics operation at a greater depth of submergence to depress development of acoustic cavitation bubbles.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: July 10, 2012
    Inventor: Curtis E. Graber
  • Publication number: 20120155222
    Abstract: A termination for an end of a braid formed as a flat closed loop of braided strands expandable to an annular cylinder having a selected wall thickness includes a sleeve having a selected internal diameter. Spacers are configured to be applied on the braid such that when in contact with each other form an annular cylinder having an external diameter selected to fit inside the sleeve. The spacers have a bevel at one longitudinal end. A substantially cylindrical insert has a bevel at one longitudinal end at substantially a same bevel angle as on the spacers. A diameter of the insert combined with twice the wall thickness of the braid is larger than an internal diameter the spacers. When axial tension is applied to the braid, the bevel on the insert with braid thereon laterally urges the spacers outward. The sleeve limits lateral outward movement of the spacers.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 21, 2012
    Inventor: Clet Antoine Landry
  • Patent number: 8175765
    Abstract: To perform control of movement of a marine vessel traveling through water during a seismic survey operation, input information relating to factors that affect a speed of the marine vessel is received. The speed of the marine vessel is adjusted in response to the received information relating to the factors that affect the speed of the marine vessel.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: May 8, 2012
    Assignee: WesternGeco L.L.C.
    Inventors: Andreas Holo, Kenneth E. Welker
  • Publication number: 20120106300
    Abstract: A sonar transducer assembly for mounting to a surface watercraft includes a rectangular first transducer configured to produce a first beam defining a fan-shape and extending generally in a first plane. The assembly further includes a rectangular second transducer configured to produce a second beam defining a fan-shape and extending generally in a second plane. The first transducer and the second transducer are oriented such that the respective first and second beams insonify different first and second areas each extending laterally with respect to a running direction of the surface watercraft, and such that the first beam is outside of the second plane of the second beam, the resulting planar separation of the first and second planes of the first and second beams reducing interference between the first and second transducers.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 3, 2012
    Applicant: NAVICO, INC.
    Inventor: Brian T. Maguire
  • Patent number: 8139443
    Abstract: An underwater sound projector system comprises multiple sound projectors, each sound projector being capable of producing acoustic pressures. The sound projectors are held in close proximity such that the sound projectors interact with one another via the acoustic pressures produced. In embodiments, the number and/or spacing of the sound projectors are adjusted based on target performance parameters.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: March 20, 2012
    Assignee: Ultra Electronics Canada Defence, Inc.
    Inventor: Bruce Allan Armstrong
  • Patent number: 8125850
    Abstract: A method for identifying position of acoustic source proximate sediments below the bottom of a body of water includes deploying a plurality of arrays of acoustic sensors on the bottom of the body of water. Each array includes a plurality of lines of acoustic sensors disposed in a substantially radial pattern. The arrays have a center to center distance therebetween of about twice a diameter of each of the arrays. Signals are detected from each of the sensors for a selected time period. A direction of the acoustic source with respect to each of the arrays is determined by steering a response of the sensors in each array. A range of the acoustic source is determined using the determined directions.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: February 28, 2012
    Assignee: PanGeo Subsea, Inc.
    Inventors: Jacques Y. Guigné, Nicholas G. Pace, Jostein Aleksandersen
  • Patent number: 8098542
    Abstract: A method for marine geophysical surveying according to one aspect of the invention includes towing at least one geophysical sensor streamer in a body of water. The streamer includes a plurality of spaced apart electromagnetic field receivers disposed at spaced apart locations along the streamer. The streamer also includes a plurality of seismic sensors disposed at spaced apart locations. The seismic sensors each include at least one pressure responsive receiver and at least one particle motion responsive receiver. At selected times, a seismic energy source is actuated in the water. Particle motion and pressure seismic signals, and electromagnetic field signals are detected at the respective receivers.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: January 17, 2012
    Assignee: PGS Geophysical AS
    Inventors: Øyvind Hillesund, Nils Lunde