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| Number | Title | Issue Date |
| 7542376 | Vessel-mountable sonar systems A vessel-mountable integrated sonar system is provided. The vessel-mountable integrated sonar system comprises at least one imaging sonar data acquisition device and at least one processing system electronically and removably connected to the at least one imaging so... | 06/02/2009 |
| 7355924 | 3-D forward looking sonar with fixed frame of reference for navigation An imaging sonar system develops three-dimensional images of the space below, to the sides, and forward of a ship relative to a fixed frame of reference. Various features permit the system to be used in non-military environments and make possible low cost with subst... | 04/08/2008 |
| 7316196 | Method and apparatus for handling mooring lines Apparatus and methods of monitoring mooring lines of an offshore drilling rig, with the apparatus including a communication system in communication with a global positioning system, providing position coordinates of the apparatus at a first point on the line, and al... | 01/08/2008 |
| 7230524 | Obstacle detection device An obstacle detection device includes: an obstacle detection section (11) for emitting beams having a predetermined divergence angle consecutively in a plurality of different directions, receiving a reflected wave from an obstacle for each direction, and dete... | 06/12/2007 |
| 7204342 | Sound focus speaker of gas-filled sound lens attachment type A sound focus speaker adopting a gas-filled sound lens enhances efficiency of transferring sound from a source to target area and of protecting a spread of transferred sound. The sound focus speaker includes a gas-filled sound lens, sound sources for generating soun... | 04/17/2007 |
| 7187320 | Matched maneuver detector A target tracking arrangement predicts the state of a target. The predictor may be a Kalman filter. In the presence of a target which is maneuvering, the prediction may be in error. A maneuver detector is coupled to receive residuals representing the difference betw... | 03/06/2007 |
| 7161485 | Emergency vehicle transmitter and receiver alert system The present invention provides an apparatus which provides a system for alerting drivers of oncoming emergency vehicles. The system is comprised of a transmitter and receiver, both including a microcontroller and non-volatile memory component, connected to a logic i... | 01/09/2007 |
| 7145835 | Personal sonar system The sonar device includes a sonar transducer, a noise filter, a microprocessor and an output device. The system warns the user when a hazardous objects is detected or when signals from companions decrease. The portable sonar device can be built into various waterspo... | 12/05/2006 |
| 7130749 | Wavelet analysis of signals to determine characteristics of anomalies in a wire In one embodiment, a method for wavelet analysis of one or more signals to determine one or more characteristics of one or more anomalies in a wire includes receiving a first signal from a detector that has scanned a magnetic field from a wire including an anomaly. ... | 10/31/2006 |
| 6950761 | Wavelet analysis of one or more acoustic signals to identify one or more anomalies in an object In one embodiment, a method for wavelet analysis of one or more acoustic signals to identify one or more anomalies in an object includes receiving an acoustic signal from an acoustic scan of an object and calculating a wavelet power spectrum of the acoustic signal. ... | 09/27/2005 |
| 6926671 | Ultrasonic imaging apparatus and method An ultrasonic imaging apparatus and method combines dynamically focused reception and coded transmission/reception technologies by inexpensive circuitry. A receive aperture is divided into smaller apertures. Correspondingly, a receive beam former is divided into rec... | 08/09/2005 |
| 6870793 | Automatically tracking scanning sonar An automatically tracking scanning sonar alternately performs horizontal scanning and vertical scanning and a target lock processor calculates a predicted position of a target based on an echo signal previously received from the target when the echo signal from the ... | 03/22/2005 |
| 6671228 | Sonar tracking array A sonar array comprising a support structure, an acoustic projector attached to the support structure, and a plurality of directional hydrophones attached to the support structure and arranged so as to surround the acoustic projector. The directional hydr... | 12/30/2003 |
| 6226227 | Manual scan imaging sonar A manual scan sonar integrates multiple technologies into a compact and low cost single beam sonar having the ability to generate wide sector views comparable to that of much larger and more expensive multiple-beam sonar units. The manual scan sonar uses ... | 05/01/2001 |
| 6157293 | Device for detecting the intrusion of a body in a predetermined space The device comprises a transmitter (7) transmitting ultrasound into a predetermined space (5), a sensor (8) which senses the echoes from the transmission by the transmitter into the space in order to deliver a signal representative of the echoes, and elec... | 12/05/2000 |
| 5966169 | Three dimensional beamformed television The system provides three-dimensional real time imaging, with features that serve to control acoustic effects that cause interference. Systems are disclosed for medical imaging and other applications in fields that utilize radiated wave signals. The syste... | 10/12/1999 |
| 5953287 | Sludge topography measurement in oil tanks A method of and apparatus for determining the topography and/or volume of a layer of sludge on the bottom of an oil tank, for example, in which a sonar head having a velocimeter is immersed in the oil, and a fan-shaped beam of acoustic energy is swept acr... | 09/14/1999 |
| 5577006 | Adaptive acoustic signal target detection system An acoustic ranging and detection system comprises an acoustic transmitter for producing an acoustic ranging signal and first and second acoustic receivers positioned on either side of the acoustic transmitter. A support mounts the acoustic transmitter an... | 11/19/1996 |
| 5526433 | Tracking platform system A self-steering platform system incorporates at least three and preferably four microphones circumferentially spaced about the platform which is mounted for movement preferably around two mutually perpendicular axes. A sound source is selected and separat... | 06/11/1996 |
| 5515340 | Ultrasonic sensor scanning apparatus and method for detecting objects by use of the scanning apparatus An ultrasonic scanning device includes an ultrasonic sensor mounted for rotation. The sensor can be automatically oriented in a predetermined reference position from a random position. During a scanning operation the sensor is rotated by incremental angle... | 05/07/1996 |
| 5460045 | Ultrasonic probes for inspection of reactor pressure vessel bottom head and weld buildup thereon An improved method for repair of incore-instrumentation-housing and related defects in a nuclear reactor system involves three stages, each with ultrasonically assisted inspections. In the first stage, a defective incore housing is removed and the exposed... | 10/24/1995 |
| 5438247 | Ultrasonic sensor scanning apparatus and method for detecting objects by use of the scanning apparatus An ultrasonic scanning device includes an ultrasonic sensor mounted for rotation. The sensor can be automatically oriented in a predetermined reference position from a random position. During a scanning operation the sensor is rotated by incremental angle... | 08/01/1995 |
| 5412618 | Spotlight-mode synthetic aperture side-look sonar A side-look sonar system and method apply a spotlight-mode synthetic aperture technique to provide increased image resolution and a long receive aperture. A control circuit activates mechanical drives to rotate projecting and receiving sonar transducers a... | 05/02/1995 |
| 5323362 | Sonar system employing synthetic orthogonal array A synthetic Mill's Cross scanner array is provided for a sonographic system. The array includes orthogonal lines for which projector and hydrophone are respectively provided. During a scan of a target volume, the projector and the hydrophone elements are ... | 06/21/1994 |
| 5297109 | Piling and pier inspection apparatus and method The objects of the present invention are achieved by a method and means for temporarily suspending sonar beam transducer means on a dihedral wing body at a first underwater location within sonar beam range of said scoured area; scanning a first portion of... | 03/22/1994 |
| 5260912 | Side-looking fish finder A side-looking fish finding apparatus transmits a sonar pulse approximately horizontally into a body of water, and then monitors echoes from the pulse. The time interval between successive sonar pulses is varied in a random manner in order to permit two o... | 11/09/1993 |
| 5235559 | Method and apparatus for determining bedload thickness employing standing wave measurements The invention generally pertains to apparatus for determining bedload thickness of a bedload on a bed surface in an aquatic medium. An acoustic source is operative when energized for producing incident acoustic waves in the medium directed at the bed surf... | 08/10/1993 |
| 5235558 | Choke point bistatic sonar A sonar system for use in a water body includes a projector on the bottom of a water body for generating and transmitting a direct beam of acoustic energy. A receiving array is immersed in the water body outside the direct beam for detecting reflections f... | 08/10/1993 |
| 5229933 | 2-D phased array ultrasound imaging system with distributed phasing A two-dimensional phased array ultrasound imaging system distributes signal delays between its probe and its base section. The transducer elements are grouped and relative delays between elements of a group are introduced within the probe. Once the intrag... | 07/20/1993 |
| 5228008 | Holder for rotatable sensor array A holder for holding a plurality of position sensors, such as ultrasonic position sensors, in a ganged array for pivotal movement about a vertical pivot axis passing through the holder. The holder includes a pair of housings carried on a rotatable shaft, ... | 07/13/1993 |
| 5182732 | Reversible fish finder apparatus A reversible drive for a fish-finder apparatus includes a motor, a drive gear driven by the motor, a driven gear driven by the drive gear and a fish-finder drive shaft driven by the driven gear. The drive gear contains one or more actuator members which a... | 01/26/1993 |
| 5173882 | Sonar system for and method of arctic seafloor reconnaissance A sonar system for arctic seafloor reconnaissance has a pair of transducers affixed to a holder so as to form a transducer array. A vertically extended tube assembly rotatably supported by a tripod suspends this transducer array at a specified depth in wa... | 12/22/1992 |
| 5163026 | Method for increasing the image rate of a sonar and sonar for the implementation of this method The invention relates to a simple, cheap sonar system with high image rate, for the detection of objects and the imaging of sea bottoms. It consists in transmitting n uncorrelated successive codes in a sector of angular width exactly equal to n times the ... | 11/10/1992 |
| 5148700 | Apparatus and method for locating sediment in a container Improved apparatus and method are provided for locating and mapping sediment in a container, which is at least partially filled with liquid. A sonar transducer is mounted with the container for emitting acoustic energy into the liquid and for receiving re... | 09/22/1992 |
| 5079752 | Platform mounted ultrasonic sweep detection system Ultrasonic energy is emitted within a detection envelope from a single transducer and echoes of targets therein are received during scanning displacement of the transducer through a predetermined sweep angle from a zero position on a platform, against the... | 01/07/1992 |
| 5033029 | Interlaced sonar system A sonar system which insonifies a target area in a plurality of distinct and separated insonified regions as a result of an acoustic transmission and thereafter fills in the blank regions upon subsequent transmissions, with each transmission always leavin... | 07/16/1991 |
| 5025425 | Sonic detection and tracking system Two submerged rotatable sets of transmitting and receiving transducers are ongitudinally spaced along the side of a river to establish intersecting lateral sonar beams obliquely oriented at opposing 45° angles relative to the primary river current. Each b... | 06/18/1991 |
| 4980872 | Transducer position control Universal directional orientation of the vibratory sensing face of a transducer is achieved by mounting the transducer on horizontal axles journaled by surrounding sleeves mounted on the depending end of a vertical standard attached to a moving carrier. T... | 12/25/1990 |
| 4976149 | Ultrasonic distance sensor and monitoring of surface profile utilizing ultrasonic distance sensor An ultrasonic distance sensor generates ultrasonic waves and transmit same toward a target surface, the distance to which is to be measured, through a predetermined path. The sensor is also provided with a reference surface which reflects ultrasonic waves... | 12/11/1990 |
| 4939697 | Variable focusing sonar The received signal from an acoustic echo detection and ranging system is mpared with internally generated signals indicating the focus of a variable focus transducer. Logic circuits in the signal comparison channel develop control voltages to focus said ... | 07/03/1990 |
