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7612686 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...
7579753 Transducers with annular contacts  
An electronic device and transducer structures are described.
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...
7536913 Rigidly mounted underwater acoustic inertial vector sensor  
An underwater acoustic sensor is designed for attachment to a rigid or semi-rigid mounting structure. The sensor includes an outer casing and a secondary casing spaced therefrom. A compliance layer...
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...
7487043 Relative positioning system  
A relative positioning system enabling a user to return to a starting position or some other point on the user's path. The system may include an array of accelerometers. The output from the...
7453763 Geophysical data acquisition system  
The invention includes a geographical sensor apparatus for use under water in the sea, including a plurality of seismic sensors ( 1 ) for sensing seismic waves associated with underground...
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...
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...
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...
7292423 Acoustic/underwater signaling device  
The present invention is concerned with an underwater communication device, that is simple in design, in operation, powered solely from the hand against the resistance of a spring or elastic band,...
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 (...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
6318497 Pressure-sensitive switch, its method of calibration and use in a hydrophone array  
A pressure-sensitive switch comprises a base member having a mounting surface formed of electrically-insulating material; two electrodes mounted on the base member and each having an...
6298012 Doubly resonant push-pull flextensional  
The present invention relates to a flextensional transducer device comprising a multi-resonant shell and push-pull driving system for driving the shell so as to provide at least two tunable...
6259653 Portable encapsulated underwater ultrasonic cleaner  
A portable, diver-operated device provides an improved method of cleaning surfaces underwater. The device includes a source of ultrasonic energy in a housing that has a compliant portion around an...
6230840 Marine vibrator  
A marine vibrator has a hollow body formed of one shell or of two opposed shells defining an inner space therein with vibrator apparatus within the hollow body. At least one shell has a curved...
6201766 Multiple pressure gradient sensor  
Apparatus for studying the variations in hydrodynamic pressure for correlation with fish movement towards and away from zones of danger comprises a hollow winged section having mounted on the...
6160760 Underwater signaling device  
An underwater signaling device 10 provides an enclosure 20 having handle 25 and barrel 21 portions. A trigger 40 is pivotally carried by the handle portion, and provides a pivoting spur 50 which...
6155196 Multi-depth acoustic signal generating device  
A simple mechanical device is provided which generates acoustic signals at ne or more specified depths. The device consists of a spring loaded piston placed in a wall of a housing, the spring...
6142094 Depth sensitive mechanical acoustic signal generating device  
A simple, mechanical device is provided which produces an acoustic signal a specified depth. The device consists of a shear plug in an exterior wall of the device housing which prevents the...
6076630 Acoustic energy system for marine operations  
A marine seismic source for generating acoustic source energy. A housing has a continuous exterior perimeter which is moveable to displace water. Movement of the housing can be accomplished by...
6076629 Low frequency flextensional acoustic source for underwater use  
6072921 Method of operating a fiber-optic acoustical sensor, apparatus for practicing the method, and in-line fiber-optic polarizer usable in such apparatus  
A fiber-optic acoustical sensor system includes a light source, an elongate optical cable conducting light from the light source to an optical acoustical transducer located at a distance from the...
6009047 Sound generation device  
A sound generating device for generating a sound wave in a body of water is provided. The device includes a pair of axially aligned pistons. An electromagnet is mounted on at least one of the...
5949741 Dual-section push-pull underwater projector  
The present invention relates to an underwater acoustic projector compris a housing formed from a rigid material, a fixed plate secured to the housing, a first annular electrostrictive ring and a...
5926439 Flextensional dual-section push-pull underwater projector  
The present invention relates to an underwater acoustic projector compris a housing formed from a rigid material, a fixed plate secured to the housing, first and second annular electrostrictive...
5907281 Swimmer location monitor  
A system is disclosed for locating swimmers who could be in danger of drowning, as determined by preset parameters such as the time duration that they remain at a depth where breathing is...
5875154 Barrel stave flextensional projector  
An apparatus for producing an acoustic output in an underwater environment ncludes a radiator having a generally elongate, circular x-section with first and second ends, the outer surface of the...
Matches 1 - 50 out of 177 1 2 3 4 >