Wave Generation And Detection Patents (Class 181/139)
  • Patent number: 11282352
    Abstract: Disclosed is a hub station of an alarm system, having: a hub station housing; a hub station controller disposed within the hub station housing, wherein the hub station is configured for: communicating, bi-directionally over a short range network during an active alarm condition, with a plurality of client stations that are distributed in a plurality of zones, the plurality of client stations each including a housing and located therein a power transformer, a speaker, a microphone, and one of a plurality of controllers; obtaining, from the communicating during the active alarm condition, intrusion sound data indicative of sounds received by one or more of the plurality of client stations; and determining, from the intrusion sound data, intrusion location data indicative of a location and movement of an intrusion among the architectural zones; and forwarding, over a long range telecommunications network, the intrusion location data to a central station.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 22, 2022
    Assignee: CARRIER CORPORATION
    Inventors: Scott Olds, Gabriel Daher, Stephen Connor
  • Patent number: 10688307
    Abstract: Delivery of an implantable wireless receiver-stimulator (R-S) into the heart using delivery catheter is described. R-S comprises a cathode and an anode and wirelessly receives and converts energy, such as acoustic ultrasound energy, to electrical energy to stimulate the heart. Conductive wires routed through the delivery system temporarily connect R-S electrodes to external monitor and pacing controller. R-S comprises a first temporary electrical connection from the catheter to the cathode, and a second temporary electrical connection from the catheter to the anode. Temporary electrical connections allow external monitoring of heart's electrical activity as sensed by R-S electrodes to determine tissue viability for excitation as well as to assess energy conversion efficiency.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: June 23, 2020
    Assignee: EBR Systems, Inc.
    Inventors: David F. Moore, Mark W. Cowan, N. Parker Willis
  • Patent number: 10624545
    Abstract: A biological information monitor includes: a measuring section which is configured to measure biological information having a periodically changing value; a sound outputting section which is configured to output a sound including a first sound and a second sound, in synchronization with a period of the biological information; and a sound controlling section which is configured to cause the second sound to be output in succession to the first sound, and which is configured to change the second sound in accordance with a value of the biological information.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: April 21, 2020
    Assignee: Nihon Kohden Corporation
    Inventors: Toshiki Aoki, Shinji Yamamori, Masayuki Inoue, Katsuyuki Miyasaka, Kiyoyuki Miyasaka
  • Patent number: 10580288
    Abstract: A method and system of fault detection for an alert generation system. In the audio alert generation system, a stored digital alert audio file is selected to be processed to generate an analog audio signal to drive a speaker. An alert fault detection system obtaining a signal from the audio alert generation system, converts the obtained signal to a digitally-formatted obtained audio signal, detects a fault in the audio alert generation system by comparing the digitally-formatted obtained audio signal with the stored digital alert audio file, and triggers a fault indicator.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: March 3, 2020
    Assignees: BlackBerry Limited, 2236008 Ontario Inc.
    Inventors: Leonard Charles Layton, Frank Linseisen, Michael Andrew Percy
  • Patent number: 10284171
    Abstract: An elastic wave device including a substrate, an interdigital transducer (IDT) electrode provided on an upper surface of the substrate, a first wiring electrode provided on the upper surface of the substrate and connected to the IDT electrode, a dielectric film that does not cover a first region of the first wiring electrode but covers a second region of the first wiring electrode above the substrate, the first wiring electrode including a cutout in the second region, and a second wiring electrode that covers an upper surface of the first wiring electrode in the first region and an upper surface of the dielectric film in the second region above the substrate.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: May 7, 2019
    Assignee: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.
    Inventors: Mitsunori Miyanari, Yosuke Hamaoka, Toru Yamaji, Hidekazu Nakanishi, Hiroyuki Nakamura
  • Patent number: 9907968
    Abstract: Delivery of an implantable wireless receiver-stimulator (R-S) into the heart using delivery catheter is described. R-S comprises a cathode and an anode and wirelessly receives and converts energy, such as acoustic ultrasound energy, to electrical energy to stimulate the heart. Conductive wires routed through the delivery system temporarily connect R-S electrodes to external monitor and pacing controller. R-S comprises a first temporary electrical connection from the catheter to the cathode, and a second temporary electrical connection from the catheter to the anode. Temporary electrical connections allow external monitoring of heart's electrical activity as sensed by R-S electrodes to determine tissue viability for excitation as well as to assess energy conversion efficiency.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: March 6, 2018
    Assignee: EBR Systems, Inc.
    Inventors: David F. Moore, Mark W. Cowan, N. Parker Willis
  • Patent number: 9840905
    Abstract: A method and apparatus for determining the location of a material located behind an obstruction. A plurality of acoustic resonators (6) having a known resonant frequency are dispersed in the material (3), the material to be located on a first side of the obstruction (2). An instrument (5) is provided at an opposite side of the obstruction to the material. The instrument emits an acoustic signal and measures a response. If the resonant frequency is detected, it is determined that the material is located substantially adjacent to the instrument. The apparatus may be used for determining the height of cement slurry located between a well casing wall and a borehole.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: December 12, 2017
    Assignee: STATOIL PETROLEUM AS
    Inventors: Gjermund Grimsbo, Marcus Fathi, Bjarne Bugten
  • Patent number: 9444427
    Abstract: A surface acoustic wave device includes, on a substrate, functional electrode units each including at least one IDT electrode, wiring electrodes connected to the functional electrode units, insulation films provided between the wiring electrode and the substrate, and a support member that surrounds the functional electrode units and at least a portion of the wiring electrodes. A thickness of the support member is larger than a thickness of the insulation films, and the insulation films and the support member are made of the same material.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: September 13, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Motoji Tsuda
  • Patent number: 8947230
    Abstract: An environmental monitoring device that includes an acoustic sensor is described. During operation of the environmental monitoring device, the acoustic sensor provides acoustic data based on measurements of sound in an external environment that includes the environmental monitoring device. Based on the acoustic data, a control mechanism determines if an alarm device, which is separate from the environmental monitoring device, is activated. For example, the environmental monitoring device may determine if a smoke detector is activated based on measurements of sound, such as a temporal 3 acoustic pattern. In addition, a sensor mechanism in the environmental monitoring device may provide sensor data based on measurements of an environmental condition in the external environment. The control mechanism may use the sensor data to assess a degree of threat in the external environment, and the environmental monitoring device may output different audible sounds as the degree of threat changes.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: February 3, 2015
    Assignee: Leeo, Inc.
    Inventors: Adam M. Gettings, Andrew G. Stevens, Bjorn H. Hovland
  • Patent number: 8893848
    Abstract: The invention is an electric sweep type seismic vibrator source of the type used in seismic prospecting for hydrocarbons. The source uses an engine and generator combination to create electric power for all systems on the source such as driving a frame of linear electric motors that direct a rod or piston to contact the ground in a recurring fashion along with driving the source from location to location through a survey area. Preferably, a foot is arranged on the bottom end of the rod or piston for contact with the ground and by engaging the grid of motors to push down against the ground in a rapid progression, acoustic energy is created and delivered into the ground for geophones to sense and record.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: November 25, 2014
    Assignee: ConocoPhillips Company
    Inventors: Peter M. Eick, Joel D. Brewer
  • Patent number: 8651230
    Abstract: An ultrasonic reactor system with an appropriately designed reactor chamber used in conjunction with a compatible ultrasonic Barbell Horn or its derivative that provides a significant efficiency increase and an intensification of sonochemical and sonomechanical processes is disclosed. These enhancements arise from the ability of the reactor chamber to direct all treated liquid media through the highly active ultrasonic cavitation region located near the surface of the horn, as well as from several improvements in the Barbell Horn design that significantly increase its longevity and in its output surface area, thereby increasing the total size of the active cavitation region.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: February 18, 2014
    Assignee: Industrial Sonomechanics, LLC
    Inventors: Sergei L. Peshkovsky, Alexey S. Peshkovsky
  • Patent number: 8641197
    Abstract: An acoustical receiver for detecting an acoustical signal characterized by a wavelength and a pen transcription system utilizing the same are disclosed. The receiver includes a detector that generates an electrical signal in response to acoustical signals in a predetermined frequency range including that wavelength, a housing surrounding the detector, and a receiving horn. The housing has a housing aperture having a maximum dimension less than the acoustical signal wavelength. The receiving horn has a first opening that is adjacent to the housing aperture and a second aperture having a dimension that is greater than the acoustical signal wavelength.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: February 4, 2014
    Assignee: Luidia Inc.
    Inventor: Yao Ding
  • Patent number: 8526654
    Abstract: Device for generating acoustic waves comprising an assembly of substantially parallel deformable walls, made of a conductive elastomer material, the series of walls delimiting contiguous spaces therebetween alternately leading over two opposite surfaces of said assembly into two cavities, that are sealed relative to one another; and a rigid revolving chamber containing the assembly and having two sealed cavities opposite two surfaces. Two circular screened slots formed in the chamber define two vents that ensure communication between the cavities and the external acoustic medium. Means are also provided for applying, in a controlled and variable manner, a set of electric potentials to the walls in order to induce an electric field between the walls, consecutively active, and inactive for a control polarity, and inactive and active for the opposite polarity, so as to decrease the space covered by the field, i.e. and in series, and to thus equally increase the contiguous space.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: September 3, 2013
    Assignee: Didson
    Inventors: Didier Gaudriot, Lionel Gaudriot
  • Publication number: 20120279795
    Abstract: An acoustic wave device includes a piezoelectric substrate, a first wiring disposed on an upper surface of the piezoelectric substrate, an organic insulator covering at least a portion of the first wiring, a second wiring disposed on a first portion of the upper surface of the organic insulator, and an inorganic insulator covering at least a second portion of an upper surface of the organic insulator. The second portion of the upper surface of the organic insulator faces an oscillation space across the inorganic insulator. The acoustic wave device has preferable high-frequency characteristics and high long-term reliability.
    Type: Application
    Filed: January 20, 2011
    Publication date: November 8, 2012
    Applicant: Panasonic Corporation
    Inventors: Mitsuhiro Furukawa, Tetsuhiro Korechika, Shinji Harada
  • Publication number: 20120061173
    Abstract: Device for generating acoustic waves comprising an assembly of substantially parallel deformable walls, made of a conductive elastomer material, the series of walls delimiting contiguous spaces therebetween alternately leading over two opposite surfaces of said assembly into two cavities, that are sealed relative to one another; and a rigid revolving chamber containing the assembly and having two sealed cavities opposite two surfaces. Two circular screened slots formed in the chamber define two vents that ensure communication between the cavities and the external acoustic medium. Means are also provided for applying, in a controlled and variable manner, a set of electric potentials to the walls in order to induce an electric field between the walls, consecutively active, and inactive for a control polarity, and inactive and active for the opposite polarity, so as to decrease the space covered by the field, i.e. and in series, and to thus equally increase the contiguous space.
    Type: Application
    Filed: April 27, 2010
    Publication date: March 15, 2012
    Applicant: Didson
    Inventors: Didier Gaudriot, Lionel Gaudriot
  • Patent number: 8101929
    Abstract: Methods and systems for Airy waves and Airy wavepackets or Airy beam generation from an input beam or pulse. Airy wavefronts and Airy wavepackets can be generated using Airy beam generation through Fourier synthesis using phase masks or filters in the spatial domain; Airy beam generation using amplitude and phase filters in the spatial domain; and Airy pulse generation through Fourier synthesis using phase and/or amplitude filters in the temporal frequency domain. The Airy waves are highly asymmetric and as a result their energy is more tightly confined in one quadrant thus increasing the energy density in the main lobes. These wavepackets can be one, two, and three-dimensional waves. In addition they tend to self-heal themselves which is important in adverse environments.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: January 24, 2012
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Demetrios N. Christodoulides, Aristide Dogariu, Georgios Siviloglou
  • Publication number: 20110272207
    Abstract: The invention concerns a method of acquiring vibroseismic data concerning a zone of the subsoil. This method comprises the following steps: —operating a vibroseismic source so that it transmits a first vibroseismic signal having a first amplitude (101, 201), —operating the source so that it transmits a second vibroseismic signal having a second amplitude different from the first amplitude (103, 203), —recording first data corresponding to the first signal after propagation in the medium to be explored (102, 202), —recording second data corresponding to the second signal after propagation in the medium to be explored (104, 204). The method supplies information for filtering the surface waves (ground roll).
    Type: Application
    Filed: January 12, 2010
    Publication date: November 10, 2011
    Applicant: CGGVERITAS SERVICES SA
    Inventor: Julien Meunier
  • Publication number: 20110209940
    Abstract: Systems and methods for creating sound bullets are described. Such sound bullets are created by controlling and/or redirecting highly nonlinear acoustic waves or pulses propagating through an array of actuators. The controlling and/or redirecting of the acoustic waves or pulses is achieved though methods such as applying pre-compressive forces to the array of actuators or by selection of size, shape and/or material of the actuators.
    Type: Application
    Filed: February 25, 2011
    Publication date: September 1, 2011
    Inventor: Chiara DARAIO
  • Patent number: 7841444
    Abstract: One example of a seismic vibrator system includes a baseplate having a bottom surface and a coupling mechanism, the coupling mechanism being operable to a deployed position; a hold-down mass connected to the baseplate; a lifting mechanism in operational connection with the hold-down mass and the baseplate to apply a selected hold-down weight to the baseplate; and a driving mechanism functionally connected to the baseplate to transmit seismic energy through the baseplate into a ground surface to which the baseplate is coupled, wherein the coupling mechanism is urged outward from the bottom surface and into physical contact with the ground surface when operated to the deployed position.
    Type: Grant
    Filed: July 5, 2008
    Date of Patent: November 30, 2010
    Assignee: WesternGeco L.L.C.
    Inventors: William A. C. Cannell, Malcolm Francis
  • Publication number: 20090236170
    Abstract: The optical axis orientation measuring device according to the present invention is a reflective optical axis orientation measuring device for a spherical member made from a single crystal of an optically uniaxial crystal having birefringence, comprising: illuminating means for illuminating the spherical member through a polarizer; and isogyre observing means for observing the isogyre that is structured by the light that is reflected from the bottom surface of the spherical member and emitted from the spherical member through an analyzer that has a cross-nicol relationship with the polarizer.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Applicant: Yamatake Corporation
    Inventors: Yusuke Ebi, Susumu Segawa
  • Patent number: 7530424
    Abstract: A supersonic boom simulator constructed from a directed coherent sound pulse source, a waveguide and a bass trap at the opposite end of the waveguide from the directed coherent sound pulse source.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: May 12, 2009
    Inventor: Curtis E. Graber
  • Patent number: 7525440
    Abstract: A person monitoring system, such as a baby monitor a monitored unit including a microphone for transducing radiated sound waves and sound waves emanating from the person to a received audio signal and circuitry for removing from the received audio signal a portion of the received audio signal corresponding to the radiated sound waves to provide an audio signal corresponding to the sound waves emanating from the person.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: April 28, 2009
    Assignee: Bose Corporation
    Inventors: Ricardo F. Carreras, Glenn Gomes-Casseres, Marc Hertzberg, Daniel D. Najemy, Ray Wakeland
  • Publication number: 20090015272
    Abstract: A self-healing composite material comprising a fibre-reinforced polymeric matrix, wherein the polymeric matrix comprises a thermosetting polymer and a thermoplastic polymer.
    Type: Application
    Filed: January 7, 2005
    Publication date: January 15, 2009
    Applicant: SHEFFIELD UNIVERISTY OF THE
    Inventors: Frank Jones, Simon A. Hayes
  • Publication number: 20090008184
    Abstract: A marine acoustic sensor assembly includes an acoustic panel having a forward surface and an after surface, a laser scanner oriented so as to project a laser beam onto the acoustic panel after surface, and a sensor oriented so as to receive reflections of the laser beam off the acoustic panel and to transmit data from which a position of a sound generating source can be determined, wherein the acoustic panel is provided with an absorber layer extending over the after surface thereof, and the absorber layer is provided with holes extending therethrough, the holes being of a size sufficient to permit passage of the laser beams to the acoustic panel after surface and the reflections to pass to the sensor, whereby to minimize reflections and noise originating from aft of the after surface, while permitting sound incoming from forward of the acoustic panel to be measured.
    Type: Application
    Filed: July 3, 2007
    Publication date: January 8, 2009
    Inventor: Anthony A. Ruffa
  • Publication number: 20080296514
    Abstract: A method and system are presented for use in determining one or more parameters of a subject. A region of interest of the subject is irradiated with acoustic tagging radiation, which comprises at least one acoustic tagging beam. At least a portion of the region of interest is irradiated with at least one electromagnetic beam of a predetermined frequency range. Electromagnetic radiation response of the at least portion of the region of interest is detected and measured data indicative thereof is generated. The detected response comprises electromagnetic radiation tagged by the acoustic radiation. This enables processing of the measured data indicative of the detected electromagnetic radiation response to determine at least one parameter of the subject in a region corresponding to the locations in the medium at which the electromagnetic radiation has been tagged by the acoustic radiation, and outputting data indicative of the at least one determined parameter.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 4, 2008
    Applicant: Or-Nim Medical Ltd.
    Inventors: Yaacov Metzger, Michal Rokni, Revital Perry-Shechter
  • Publication number: 20080236935
    Abstract: Tubewaves are used to transmit an indication of the depth at which a condition is detected in a well. In particular, the depth is calculated based on the difference in arrival time at the surface of a first tubewave which propagates directly upward in the borehole and a second tubewave which initially travels downward and is then reflected upward. The tubewaves may be generated by a canister designed to implode at a certain pressure. After being introduced into the flowline at an above ground inlet, the canister is carried downhole by gravity and the fluid being pumped. When the canister reaches a depth at which its pressure tolerance is exceeded, it implodes and generates the tubewaves. An analyzer at the surface detects the tubewaves with a hydrophone array and generates a pressure versus depth profile of the well, i.e., one data point for each implosion.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 2, 2008
    Applicant: Schlumberger Technology Corporation
    Inventors: Richard Timothy Coates, Douglas E. Miller, Philip Sullivan, Francois Auzerais, Tarek M. Habashy
  • Patent number: 7207222
    Abstract: The invention relates to an electromagnetic piezoelectric acoustic sensor (EMPAS). The sensor comprises a piezoelectric sensor plate spaced apart from an induced dynamic electromagnetic field, such as from an electromagnetic coil through which AC current flows. The electromagnetic field induces vibration in the sensor plate by fluctuating the aligned dipole moments of the piezoelectric material. Changes on the surface of the sensor plate can be detected by variation in resonance frequency of the sensor plate. The invention represents an improvement over conventional sensor methodologies in that no metallization of the sensor surface is required, and no permanent magnet is needed. The sensor may be used to detect absorption of molecules or biomolecular interactions between probe and target molecules.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: April 24, 2007
    Assignee: Sensorchem International Corporation
    Inventors: Michael Thompson, Scott Ballantyne
  • Patent number: 6915875
    Abstract: A plurality of heavy mass irregularities attached to an inner wall of the drill collar attenuate waves traveling through the collar. The plurality of heavy mass irregularities are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined frequency range. The mass irregularities may be rings firmly coupled to the outer surface of the collar. Alternatively, the mass irregularities may be rings firmly coupled to the outer collar surface by neck pieces, extending inwardly from the inner circumference of the ring. The mass irregularities may be made of steel or tungsten. In another preferred embodiment, the mass irregularities are asymmetrically coupled to an outer collar wall for providing preferential directional attenuation.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: July 12, 2005
    Assignee: Baker Hughes Incorporated
    Inventors: Vladimir Dubinsky, Alexei Bolshakov
  • Patent number: 6883638
    Abstract: Method for operating and testing a sensor assembly (210). The sensor assembly (210) preferably includes accelerometers with axes of sensitivity orthogonal to each other. The method preferably includes determining sensor tilt angle, determining the position of the sensor, and synchronizing the operation of the sensor.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: April 26, 2005
    Assignee: Input/Output, Inc.
    Inventors: Peter Maxwell, Lawrence P. Behn, Eugene D. Bednar, Jeffery C. Gannon, Michael Arthur Corrigan, Glen Ragan, Dale J. Lambert, Henry Thomas Polk, Steven L. Roche, Wilfred Roy Bertrand, David Wilson, Byron Lee Cain, Michael George McMahon, John C. Downey Jr., Keith Elder
  • Publication number: 20040221652
    Abstract: This invention relates to a Electromagnetic Acoustic Transducer which has the ability to detect flaws in assorted metallic objects, such as pipes, rods, bars and the like, including those objects which are already installed and cannot be removed without a major undertaking. The Transducer also has an embodiment which includes hinged arms for surrounding the circular objects that have already been installed such as piping. The system employs Lamb waves to move along the surface of metallic objects to affect a bounced return to thereby allow detection of flaws on the surface or in the interior of said objects.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Inventors: John H. Flora, Charles M. Fields, Daniel P. Geier
  • Patent number: 6791470
    Abstract: A system and method for transferring wave energy into or out of a periodic structure having a characteristic wave impedance profile at a prime frequency, the characteristic wave impedance profile comprising a real portion and an imaginary portion, comprising: locating one or more energy transfer elements each having a wave impedance at the prime frequency approximately equal to the real portion of the characteristic wave impedance at one or more points on the periodic structure with the imaginary portion approximately equaling zero; and employing the one or more energy transfer elements to transfer wave energy into or out of the periodic structure. The energy transfer may be repeaters. Quarter-wave transformers can be provided at one or more points on the periodic structure with the imaginary portion approximately equaling zero to transmit waves across one or more discontinuities. A terminator can be employed for cancellation of waves.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: September 14, 2004
    Assignee: Sandia Corporation
    Inventor: Douglas S. Drumheller
  • Publication number: 20030154790
    Abstract: Acoustic energy is used to control the shape of a particle or particle cluster for the purpose of inducing a phase and hence density change as a result of exposure to radiation. This process, known as optical acoustic molding, employs an acoustic transducer and reflector positioned around a particle or particle cluster to generate standing waves. These standing waves apply forces to points on the particle's surface. The locus of such points represents a three-dimensional pressure function, which will ultimately cause the particle or particle cluster to acquire a predefined shape. Once the particle or particle cluster has attained the desired shape or density, a radiation source induces rapid melting or solidification (i.e. rapid change in density) of the particles.
    Type: Application
    Filed: January 8, 2003
    Publication date: August 21, 2003
    Inventors: Philip A. Venturelli, Fred E.C. Culick
  • Patent number: 6349791
    Abstract: A submarine bow dome acoustic sensor assembly comprises an outer hull bow portion, an inner pressure hull wall extending athwartships and in conjunction with the outer hull bow portion defining a free-flood compartment, and an acoustic bow panel disposed in the compartment and connected to the pressure hull wall by acoustically isolating supports. A laser scanner is disposed in the compartment and is oriented so as to project a laser beam onto a surface of the acoustic bow panel, and a sensor is disposed in the compartment and oriented so as to receive reflections of the laser beam off the acoustic panel and to transmit data from which a position of a sound generating source can be determined.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: February 26, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Daniel M. Glenning, Bruce E. Sandman
  • Patent number: 6341661
    Abstract: A compact, modular sonar assembly for use on the bow of a ship having separate transmitting and receive arrays confined within a single acoustic housing. The narrow and compact design fits much better into the hydrodynamically desirable bulbous bow deign than the typical bow dome sonar design and achieves good performance at a low cost with reduced size and weight.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: January 29, 2002
    Assignee: L3 Communications Corporation
    Inventors: Ernest Theodore Bick, Merrill E. Fife, Scott A. Hudson
  • Patent number: 6065562
    Abstract: A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a piston/cylinder relationship. Spaced apart horizontal top and bottom plates are secured to the hub. A mass is slidably supported between the plates. Pistons interconnect the hub and the mass. Hydraulic energy is used to reciprocate the mass vertically on the post and horizontally between the plates.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: May 23, 2000
    Assignee: Industrial Vehicles International, Inc.
    Inventors: James M. Bird, James M. Bird, Jr., Elmo W. Christensen, Michael G. Grady
  • Patent number: 5696489
    Abstract: A wireless boundary monitor system used to monitor the integrity of a boundary surrounding an area uses at least two housings having at least one transmitting means for emitting ultrasonic pressure waves to a medium. Each of the housings has a plurality of receiving means for sensing the pressure waves in the medium. The transmitting means and the receiving means of each housing are aimable and communicably linked. At least one of the housings is equipped with a local alarm means for emitting a first alarm indication whereby, when the pressure waves propagating from a transmitting means to a receiving means are sufficiently blocked by an object a local alarm means or a remote alarm means or a combination thereof emit respective alarm indications. The system may be reset either manually or automatically. This wireless boundary monitor system has useful applications in both indoor and outdoor environments.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: December 9, 1997
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventors: Howard D. Haynes, Curtis W. Ayers
  • Patent number: 5660909
    Abstract: A sheet for measuring ultrasonic waves with which it is possible to easily measure a 2-dimensional ultrasonic wave distribution comprises a fluid in which multiple bubbles, each consisting of a minute quantity of gas covered by an extremely thin covering, are dispersed and sealed in a transparent baglike sheet.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: August 26, 1997
    Assignee: Ekos Corporation
    Inventors: Katsuro Tachibana, Shunro Tachibana
  • Patent number: 5355312
    Abstract: To determine the speed of propagation of a signal in a medium, wave amplitude is measured over time at one or more detectors disposed within the medium so as to detect and identify signals transmitted at one or more sources disposed within said region. Frequency domain matched field processing power is calculated by matching measured with perturbation normal mode model fields, and beta coefficients which determine sound speed profiles are calculated by beta backpropagation so as to maximize the matched field processing power.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: October 11, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Alexandra I. Tolstoy, Orest I. Diachok, L. Neil Frazer
  • Patent number: 4939703
    Abstract: A baffle for enlarging the field of view of and enhancing collection of radiation for a sensor apparatus having a transducer for receiving radiation within its field of view. The baffle includes a base securable proximate the transducer, and at least one blade element extending from the base outwardly from the transducer. The base element includes a proximal edge transecting the transducer to establish at least two apertures for the transducer for enlarging its field of view. The blade element is reflective for the radiation to enhance collection of the radiation from a periphery of the enlarged field of view.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: July 3, 1990
    Assignee: Denning Mobile Robotics, Inc.
    Inventor: Lon J. Muller
  • Patent number: 4796726
    Abstract: An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measure of microphones for transmitting and receiving ultrasonic waves is chosen so that detour waves are restricted.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: January 10, 1989
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Kobayashi, Hiroaki Obayashi
  • Patent number: 4739860
    Abstract: An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measurements for microphones for transmitting and receiving ultrasonic waves are chosen so that detour waves are restricted.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: April 26, 1988
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Kobayashi, Hiroaki Obayashi
  • Patent number: 4651740
    Abstract: The apparatus and method are utilized in controlling an implanted device, such as a cardiac pacer, by use of acoustic vibrations generated by a tuning fork. These vibrations are applied externally to the skin overlying the implanted device and are sensed by a transducer within the implanted device. The transducer generates an electrical signal of a frequency correlated to the tuning fork frequency. An amplifier and tuned filter are utilized to detect predetermined frequencies within the electrical signals produced by the transducer and to direct the processed signals to a programmable electronic device for control of the implanted device.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: March 24, 1987
    Assignee: Cordis Corporation
    Inventor: Edward A. Schroeppel
  • Patent number: 4450436
    Abstract: An acoustic alarm repeater system detects a coded alarm signal such as might be produced by a smoke detector or burglar alarm. The alarm signal can vary over a wide dynamic range since the signal will usually be greatly attenuated by intervening walls or floors. The system includes an electroacoustic transducer for converting the coded audible alarm signal into an electrical signal; an amplifier; and an autocorrelator for recognizing the presence of the repetitive characteristic of the coded acoustic alarm signal. Upon detecting the presence of the coded alarm signal, the system generates a new loud warning signal. The processing system may be designed to detect a wide variety of differently coded alarm signals. A dual repeater system recognizes the presence of two differently coded alarm signals, such as one produced by a smoke detector and the other produced by an intrusion alarm, and responds differently to each.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: May 22, 1984
    Assignee: The Stoneleigh Trust
    Inventor: Donald P. Massa
  • Patent number: 4300217
    Abstract: A housing for an acoustic transducer includes means for dispersing internal reflections within the housing to minimize the incidence of such internally reflected acoustic pulses on the transducer itself, thereby avoiding the generation of spurious electrical signals for transmission to the translating circuitry.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: November 10, 1981
    Assignee: Honeywell Inc.
    Inventor: Dale O. Ballinger
  • Patent number: 4196789
    Abstract: Underwater protection for ships, for channels at harbor entrances and the like is obtained by the use of this invention in which one or more sending wires are put under tension under water and a mechanical vibration is applied to each sending wire longitudinally. Sound waves are propagated into the water from the entire underwater length of the cable. A suitable sound receiver is spaced under water separated from the sending wire to include the area to be protected. The sound put forth by this sending wire may be enhanced by attaching one or more disks to the submerged portion of the sending wire. A curtain wall of sound propagation is thereby created, which may be of great power and intensity and which would be in the low-frequency range.
    Type: Grant
    Filed: February 21, 1967
    Date of Patent: April 8, 1980
    Assignee: Bossert Manufacturing Corporation
    Inventor: Wadsworth W. Mount
  • Patent number: 4186373
    Abstract: A hollow, projectile-shaped body containing an acoustical transducer is rased into the sea such that the body descends in free fall until it strikes and penetrates the sea floor, coming to a rest therein. Acoustic signals emanating from the acoustic transducer are processed to generate a direct current analog signal which is a function of the acoustical attenuation of the acoustic signals from a time immediately preceding the body striking the sea floor surface until the body comes to rest in the sea floor, thereby obtaining an indication of the physical characteristics of the sea floor.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: January 29, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: John R. Thompson
  • Patent number: 4158781
    Abstract: A solid state transmit-receive switching element having multiple resonant rcuits connected in a bridge arrangement by back-to-back zener diodes. While receiving, the zener diodes have a high impedance and the bridge arrangement acts as two series tuned circuits in parallel. While transmitting, the zener diodes breakdown and the bridge arrangement appears electrically as two parallel tuned circuits in series.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: June 19, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Dale D. Skinner, John H. Thompson
  • Patent number: 4042910
    Abstract: A method of suppressing noise trains that develop from harmonics of a vibrator-type sweep signal. It includes the step of generating a plurality of such sweep signals in series and with the phase of each succeeding sweep signal being shifted relative to the previous one by a predetermined phase angle which is a fraction of 2.pi.. The generated signals are separately recorded and transformed by inverse phase shifting before being added or stacked in a conventional manner.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: August 16, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventor: Eike Rietsch
  • Patent number: 3973250
    Abstract: An ultrasonic whistle is mounted together with a pin on a window or door so that movement of the window or door causes relative movement between the whistle and pin. Such movement releases compressed gas from a container which activates the whistle. A central monitor in the building detects the output of the whistle and provides an output to activate alerting devices.
    Type: Grant
    Filed: November 12, 1974
    Date of Patent: August 3, 1976
    Inventor: Malcolm R. Uffelman
  • Patent number: H1280
    Abstract: To determine the speed of propagation of a signal in a medium, signals with known harmonic components are transmitted from one or more sources within the region. One or more detectors within the region measure wave amplitude over time at so as to detect the signals transmitted at the sources and so as to identify the source from which each detected signal was transmitted. Beta bar coefficients are calculated so as to maximize the correlation of the calculated matched field processing power and the measured matched field processing power for each source-detector combination. Beta coefficients for all cells through which a path from a source to a detector passes are calculated by representing all positions in the region by cell number i and position coordinate z, the region being partitioned into M discrete, indexed cells C.sub.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: January 4, 1994
    Assignee: United States of America
    Inventor: Alexandra Tolstoy