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| Number | Title | Issue Date |
| 7542377 | Increased aperture homing cavitator Various exemplary embodiments of an increased aperture homing cavitator are disclosed. In one exemplary embodiment, a supercavitating body may include, e.g., but may not be limited to, a cavitator assembly having a front end and a back end, and having a shape operat... | 06/02/2009 |
| 7496001 | Light and noise maker for diving use A dive accessory has an outer shell that encompasses a light maker and a noise maker. The light maker is waterproofed and has a light source electrically connected to an electrical power source for powering the light source. A light switch selectively opens and clos... | 02/24/2009 |
| 7388512 | Diver locating method and apparatus A system for locating a diver is provided. The system includes a diver module for association with a diver that is capable of producing both an audible frequency signal to assist in locating the diver while submerged, and a radio frequency signal to assist in locati... | 06/17/2008 |
| 7339852 | Seismic acquisition system A seismic acquisition system comprising a remote-controlled buoy for conducting seismic acquisition operations. The buoy comprises an operating system for operating a seismic wave production device on the buoy, a placement system, a communications system, and dynami... | 03/04/2008 |
| 7325357 | Acoustical fishing lure An improved fishing lure which produces, transmits and modulates high frequency vibrations. The high frequency tone wire vibration is actuated upon impact of a striker against the wall of an essentially watertight housing. As the striker oscillates within the housin... | 02/05/2008 |
| 7324406 | Sensor arrangement for seismic waves A sensor arrangement is provided for use in the seismic investigation of geological formations below the seabed. A plurality of sensor nodes (20) are provided and are positioned gfor deployment on the seabed to collect pressure waves and shear waves from the ... | 01/29/2008 |
| 7318489 | Hydraulic motor arrangement and method of operating a hydraulic motor A hydraulic motor for use in subterranean drilling operations in which a drive fluid within a first reservoir is forced through the motor by a high pressure working fluid, such as drilling mud, the drive fluid entering a second reservoir upon exiting the motor. Upon... | 01/15/2008 |
| 7299894 | Acoustic fluid machine An acoustic fluid machine includes an acoustic resonator, a valve device, a piston, and an actuator. The acoustic resonator has a larger-diameter base and a smaller-diameter upper end. The valve device is provided on the upper end of the acoustic resonator and has a... | 11/27/2007 |
| 7295493 | Pressure tolerant fiber optic hydrophone An interferometric hydrophone is disclosed that comprises a first mandrel defining an interior that is open to surrounding fluid. A sensing optical fiber is wound upon the first mandrel. A second mandrel is positioned in surrounding relationship with respect to the ... | 11/13/2007 |
| 7267654 | Focused shock-wave devices with direct wave cavitation suppressor A reflector (14) reflects energy emitting from an energy source (16) and focuses and directs it to a target. An aperture stop or suppressor disk (18) is positioned between the energy source (16) and target. The outer periphery of the aper... | 09/11/2007 |
| 7252102 | Ultrasonic slat washer An ultrasonic cleaner apparatus is disclosed which includes a support housing, a tub supported by the housing and an ultrasound and sensor transducer contacting the bottom of the cleaning tank. A fixture assembly for holding items to be cleaned is configured for ins... | 08/07/2007 |
| 7237564 | Distribution of energy in a high frequency resonating wafer processing system A transducer for use in an acoustic energy cleaner is provided. The transducer includes a resonator and a plurality of crystals bonded to a surface of the resonator. The plurality of crystals is configured to be bonded to the surface of the resonator in a staggered ... | 07/03/2007 |
| 7218571 | Magnetically driven underwater pulse generator An apparatus and method for magnetically generating an underwater high pressure pulse of sufficient strength to destroy underwater threats utilizes a pair of electrically conductive elements. The electrically conductive elements are arranged substantially parallel w... | 05/15/2007 |
| 7204009 | Manufacturing method of acoustic sensor The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the acoustic sensor 100, the acoustic sensor 100 has a s... | 04/17/2007 |
| 7206258 | Dual response acoustical sensor system An array of pressure sensors and motions sensors is contained in a layered material system that includes an acoustically compliant layer and an acoustically transparent layer. The compliant layer (which vibrates in accordance with acoustical influence thereupon) is ... | 04/17/2007 |
| 7180827 | Surface acoustic antenna for submarines The invention relates to surface acoustic antennas for submarines. It consists, in a known antenna, in replacing certain pressure sensors with velocity sensors in order to obtain cardioid directivity with a zero oriented toward the hull of the submarine. It allows t... | 02/20/2007 |
| 7170821 | Displacement current method and apparatus for remote powering of a sensor grid This invention serves as a method and apparatus for delivering power to a series of remote sensors in an on hull sensor grid for the purpose of biasing the active circuitry on the sensors. It requires no physical connection between the source of power and the sensor... | 01/30/2007 |
| 7148811 | Emergency underwater notification device The emergency underwater notification device disclosed, one of which would be carried by each diver on a team of divers at a dive site, comprises (a) an activator; (b) one or more primary signal emitters, each of which emits a primary notification signal upon activa... | 12/12/2006 |
| 7113447 | Laser pumped compact acoustic sensor system An acoustic transducer system for acoustic signals in water has at least one hollow spherically-shaped shell for vibrating in response to acoustic signals impinging from the water. The hollow spherically-shaped shell has one or more portions that are reflective of i... | 09/26/2006 |
| 7080442 | Manufacturing method of acoustic sensor The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the acoustic sensor 100, the acoustic sensor 100 has a s... | 07/25/2006 |
| 7054228 | Sound source location and quantification using arrays of vector probes Method and apparatus for locating and quantifying sound sources using an array of acoustic vector probes (200). Signals received at the probes are converted to digital form and fed into a digital signal processor (400) which computes the sound pressure... | 05/30/2006 |
| 7042803 | Marine seismic source towing apparatus and method A marine acoustic source system has relativley densely packed energy sources arrayed in a tandem-like fashion along a horizontal plane. Preferably, a longitudinal axis of each source lies orthogonal to a pre-determined towing direction. The system includes protectiv... | 05/09/2006 |
| 7025092 | Positive air pressure attenuation device for drainage systems The positive air pressure attenuation device (1) for use in drainage systems in buildings includes a housing (3), connected to the system, to which a flexible reservoir (10) is secured, the flexible reservoir (10) being operable on a posi... | 04/11/2006 |
| 6962187 | Spools for horizontal blinds The present spools are shaped as flared cylinders. In one embodiment, the spools have a minimum circumference at a center, and maximum circumferences at outer portions thereof. In another embodiment, the spools flare from a maximum diameter adjacent a first side wal... | 11/08/2005 |
| 6961284 | Source array for use in marine seismic exploration A staggered vertical marine seismic source contains upper and lower arrays (10, 11) of emitters of seismic energy (S11, S12; S21, S22). The upper array (10) is horizontally displaced relative to the lower array (11). The source is used in a mari... | 11/01/2005 |
| 6957574 | Well integrity monitoring system Improved methods and apparatuses for directly monitoring well casing strain and structural integrity are disclosed that allows for monitoring of potentially damaging strain from any orientation or mode and over long stretches of well casing. In a preferred embodimen... | 10/25/2005 |
| 6928720 | Method of manufacturing a surface acoustic wave device A surface acoustic wave device includes a piezoelectric substrate and at least one interdigital electrode disposed on the piezoelectric substrate. The interdigital electrode is made of α-tantalum. ... | 08/16/2005 |
| 6904222 | Optical fiber splice protection apparatus for use in optical fiber hydrophone array An optical fiber splice protection apparatus that allows optical fiber to be spliced and placed in position on a mandrel in cases of assembling a module or repairing optical fiber that has been broken. The present invention comprises a splice protector affixed to a ... | 06/07/2005 |
| 6895309 | Calendar timer mechanism and processing apparatus A calendar timer mechanism has an OFF mode for turning off all objects to be controlled, which include a heater, a display panel, and motors, an ON mode for turning on all the objects to be controlled, and at least two energy-saving modes for selectively turning off... | 05/17/2005 |
| 6814180 | Monopole-driven underwater sound source An underwater sound source which comprises a housing having an inner and an outer surface and a monopole driver suspended within the center of the housing. The housing is adapted to receive fluid therein to form a fluid column inside the housing. The underwater soun... | 11/09/2004 |
| 6778470 | Mountable syntactic foam sensor housing A encapsulation method of an acoustic sensor module and a resultant lightweight watertight acoustic sensor module for use in towed array retrieval systems. In the method, a composite is cast to encapsulate the support between end plates of the module, an exterior of... | 08/17/2004 |
| 6697302 | Highly directive underwater acoustic receiver An underwater acoustic receiver sensor is disclosed that measure up to seven (7) quantities of acoustic field at a collocated point. The quantities measured by the acoustic receiver sensor are acoustic pressure, three orthogonal components of acoustic par... | 02/24/2004 |
| 6652331 | Trolling motor with integral sonar transducer A trolling motor having an integral sonar transducer including: a submerged motor housing; an electric motor housed in the housing; a sonar transducer housed in the housing; a motor controller having a pulse width modulated output and a shielded electrica... | 11/25/2003 |
| 6643222 | Wave flextensional shell configuration A flextensional transducer projector shell design is disclosed. The shell design has a shape formed so as to reduce the stress placed on the transduction driver as compared to other shell designs. The shell design includes first and second bulbous end por... | 11/04/2003 |
| 6578405 | Gas seep detection A method of detecting a marine gas seep that includes: deploying a local probe on or near the seafloor; producing bubbles in water near or within the local probe; detecting the bubbles; producing data indicating the relative concentration of dissolved gas... | 06/17/2003 |
| 6571906 | Underwater sound mitigation system for explosive testing A sound mitigation system and method reduce the transmission of acoustic output from explosions underwater. The system is submerged to bottom terrain of a body of water and has at a series of gas-generating devices providing volumes of gas that are fed to... | 06/03/2003 |
| 6476721 | Alarm arrangement An alarm arrangement for swimming pools includes an electronic transmitter unit (16) and an electronic receiver unit (18). The transmitter unit (16) has a housing (20) containing electronic circuitry. Water activated electrical contacts (24, 26) are provi... | 11/05/2002 |
| 6396770 | Steerable thermoacoustic array This invention is a steerable thermoacoustic array system for directing information between an object that is above the surface of the water and a sound detector that is beneath the surface of the water. The foregoing system comprises a laser or particle ... | 05/28/2002 |
| 6370084 | Acoustic vector sensor An acoustic vector sensor for monitoring acoustic energy underwater includes an acoustic sensing tri-axial accelerometer, a body of syntactic foam encasing the accelerometer, a body of viscoelastic rubber encasing the body of syntactic foam, and a rigid p... | 04/09/2002 |
| 6349791 | Submarine bow dome acoustic sensor assembly 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 ... | 02/26/2002 |
