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7638924 |
Method of driving ultrasonic transducer
An ultrasonic transducer includes a piezoelectric resonator including a pair of electrodes sandwiching a piezoelectric body and provided with the backing layer in contact with one of the electrodes...
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7626890 |
Hybrid-drive multi-mode pipe projector
A hybrid drive (HD) multi-mode pipe projector (MMPP) for use in underwater acoustic applications is provided. The HD MMPP is formed with an inner magnetostrictive drive motor nested within an outer...
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7557489 |
Embedded circuits on an ultrasound transducer and method of manufacture
One or more chips, integrated circuits, or semiconductors are embedded within a backing block. Planar sheets of backing material are formed with integrated circuits within holes in the sheets....
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7379392 |
Flexible cymbal array
A cymbal array for underwater vehicle applications includes piezoelectric discs disposed in a line, a first flex circuit comprising first annular members each affixed to a first side of one of the...
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7309947 |
Piezoelectric transducer including a plurality of piezoelectric members
A piezoelectric transducer for an ultrasonic scan is provided. The transducer includes a plurality of piezoelectric members arrayed. The plurality of piezoelectric members have different...
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7309948 |
Ultrasonic transducer and method of manufacturing the same
An ultrasonic transducer in which electrodes can be easily and positively joined to a multiplicity of micro-fabricated vibrators and electric wiring can be easily and positively provided. The...
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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...
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7177434 |
Stepped sound producing module
A generally pyramid shaped sound module is provided that is attachable to a balloon for producing hi-fidelity sound effects. The sound module includes a piezoelectric element connected at the top...
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7109642 |
Composite piezoelectric apparatus and method
The present invention relates to composite piezoelectric apparatus, transducers and methods of manufacture. In an embodiment, a composite piezoelectric apparatus has a sacrificial base and pillar...
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7088830 |
Parametric ring emitter
A sound emitting device for providing at least one new sonic or subsonic frequency as a by-product of emitting a waveform of at least two ultrasonic frequencies whose difference in value...
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7019439 |
High power ultrasonic transducer with broadband frequency characteristics at all overtones and harmonics
A transducer assembly for receiving a stimulating signal and producing ultrasound therefrom at one or more frequencies, over an ultrabroad bandwidth at each frequency, includes a front mass...
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6985407 |
Multi-layer composite transducer array
A multi-layer composite transducer array includes at least one pair of composite transducers with an electrical and mechanical isolation layer disposed therebetween. Each composite transducer is...
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6973972 |
Method for reduction of scale during oil and gas production and apparatus for practicing same
Scaling may be reduced during oil and gas production using a device having a sound transducer. The device can be used downhole and functions independently of an external power supply. Use of the...
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6933658 |
Method of manufacturing a piezoelectric/electrostrictive device
A piezoelectric/electrostrictive (P/E) device includes a pair of mutually opposing metal thin plate sections, a movable section, and a fixation section for supporting the thin plate sections and...
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6865140 |
Mosaic arrays using micromachined ultrasound transducers
An ultrasound transducer array includes a multiplicity of subelements interconnected by a multiplicity of microelectronic switches, each subelement comprising a respective multiplicity of...
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6856580 |
Naval-hull mounted sonar for naval ship
The invention relates to hull sonars for a naval vessel. The hull sonar includes associating a transmitter formed by cylindrical rings with a receiver formed by at least two sets of hydrophones...
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6822744 |
Modular interferometric imaging method apparatus and system
A modular interferometric imaging system includes a sensor array that senses a physical parameter and provides a plurality of first sensor array output signals indicative thereof. An analog die...
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6671230 |
Piezoelectric volumetric array
A three-dimensional array of acoustic sensors. The array can be used for both the transmission and reception of acoustic signals. The array comprises electroplated piezoelectric polymer layers that...
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6640636 |
Ultrasound radiating and receiving device
An ultrasound radiating and receiving device comprises a piezoelectric substrate, an interdigital arrangement of first and second comb-shaped electrodes, and a counter electrode. The interdigital...
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6424597 |
Multielements ultrasonic contact transducer
This transducer comprises means ( 16 to 24, 56 to 60 ) for determining the respective positions of ultrasound emitting elements ( 6 ) with respect to an object to be inspected ( 8 ) during...
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6341408 |
Method of manufacturing a multiple-element acoustic probe comprising a common ground electrode
A method of manufacturing a multiple-element acoustic probe including piezoelectric transducers and an array of interconnections connecting the transducers to an electronic signal processing and...
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6275448 |
Pressure-compensated acceleration-insensitive hydrophone
A generally cylindrical hydrophone configuration provides compensation for longitudinal accelerations by placing four identical solid piezoelectric transducer elements along its axis with each...
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6266857 |
Method of producing a backing structure for an ultrasound transceiver
A method of producing an acoustically absorbing anisotropic backing structure for an ultrasound transceiver is disclosed. Laser machining of a substrate of acoustically absorbent electrically...
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6076629 |
Low frequency flextensional acoustic source for underwater use
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6048699 |
Method of fabricating bio-chip arrays
A method of fabricating one or more arrays of bio-molecule test sites including providing a solution containing bio-molecule probes in contact with the surface of a substrate, using orthogonal...
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6046961 |
Multi-layer tiled array
A sonar sensor array having a multi-layer tiling arrangement for the indiual elements that increases surface area available for each element while maintaining the inter-element spacing required to...
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6018493 |
Sonar suspension apparatus
Sonar suspension apparatus comprising a flotation buoy and an underwater sonar array connected to the flotation buoy by a suspension cable, wherein the sonar array comprises a plurality of...
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5995453 |
Composite ultrasonic transducer
In a composite ultrasonic transducer, each of a plurality of piezoelectric ceramic columns included in a resin plate has a given circular cross-section and passes through the resin plate in a...
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5950291 |
Method of manufacturing a conformable composite acoustic transducer panel
Methods for fabricating a conformable composite acoustic transducer panel including a conformable composite body having upper and lower planar faces and upper and lower thin, flexible electrodes...
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5920523 |
Two-dimensional acoustic array and method for the manufacture thereof
There is provided a two-dimensional array for use in an acoustic imaging system which comprises a plurality of transducer segments each having a trace for exciting an electrode on each of the...
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5808970 |
Multi-layer acoustically transparent sonar array
A sonar array uses multiple acoustically transparent layers. One layer is a lanar array of acoustic sensors that is substantially acoustically transparent. Another layer is an acoustically...
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5784341 |
Underwater acoustic transmitter for large submersion
The invention relates to underwater acoustic transmitters intended to be submerged at large depths. It consists in threading the set of annuli forming the transmitter onto an internal tube (303)...
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5781509 |
Wide beam array with sharp cutoff
A transducer array is constructed from a constant arc length portion of a ght circular cylindrical shell of piezoelectric transduction material. The constant arc length portion is segmented evenly...
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5747672 |
Ultrasonic probes for use in harsh environments
An ultrasonic device for detecting concentrations of solids or positions of solid/liquid interfaces in liquid media, particularly Bayer process liquids. The device comprises at least one...
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5737279 |
Retractable sensor array system
A retractable sensor array system is used to provide a large aperture sen array, such as a sonar array, that receives acoustic energy in a deployment medium. The retractable sensor array system...
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5704105 |
Method of manufacturing multilayer array ultrasonic transducers
A method for fabricating "1.5D" and "2D" multilayer ultrasonic transducer arrays employs dicing saw kerfs, which provide acoustic isolation between rows. The kerfs are metallized to provide...
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5691960 |
Conformal composite acoustic transducer panel and method of fabrication thereof
A conformable composite acoustic transducer panel including a conformable composite body having upper and lower planar faces and upper and lower thin, flexible electrodes bonded to the upper and...
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5655276 |
Method of manufacturing two-dimensional array ultrasonic transducers
In fabricating a two-dimensional array transducer wherein individual preformed piezoelectric elements are manufactured separately in a high temperature ceramic firing process, a ceramic substrate...
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5553035 |
Method of forming integral transducer and impedance matching layers
A method of forming a transducer device having integral transducer and impedance matching portions includes forming grooves partially through a thickness of a piezoelectric member. A groove volume...
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5550792 |
Sliced phased array doppler sonar system
A method and apparatus is disclosed for making a sliced phased array transducer formed from a single piezoelectric disk which has been bonded to a metal coated support surface. After bonding, the...
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5548564 |
Multi-layer composite ultrasonic transducer arrays
A piezoelectric transducer chip comprising a plurality of transducer elements. At least one of the transducer elements is a multi-layer element which comprises a plurality of piezoelectric layers,...
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5545858 |
Method for processing and interpreting wide band FM seismic signals
A method for determining a unique signal representing the earth's response between a transmitter and receivers when conducting a seismic survey involves the steps of receiving a seismic signal set...
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5541894 |
Low distortion hydrophone
A system and method provide a low distortion hydrophone. A first known piezoelectric element is mounted so as to receive a pressure signal. A second piezoelectric element is provided with a means...
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5530678 |
Real-time calibration acoustic array
A method and apparatus for acoustic array calibration. A housing with an opening on one side contains the acoustic transducer element. An acoustically transparent window covers the opening in the...
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5517467 |
Undersea acoustic antenna with surface sensor
An acoustic antenna includes at least one surface sensor formed by a stack of conducting materials and dielectric layers of piezo-electric material enclosed in a sheathing of flexible material. The...
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5515342 |
Dual frequency sonar transducer assembly
The invention relates to a dual frequency sonar transducer assembly which may be operated at low and/or high frequencies in a sonar array. The assembly comprises a low frequency unit of tonpilz...
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5511043 |
Multiple frequency steerable acoustic transducer
A multiple frequency acoustic transducer is constructed as a stacked confration of N groups of multi-layer transducer elements separated from one another by an electrical insulating material. Each...
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5499219 |
Electro-acoustical transducer arrangement
An electro-acoustical transducer arrangement for underwater antennas comprised of a plurality of hydrophones (10) which are arranged at equal distances in a linear array, and are to be disposed...
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5493541 |
Ultrasonic transducer array having laser-drilled vias for electrical connection of electrodes
A system and process for electrically connecting all elements in a transducer array from one side. A flat block of piezoelectric ceramic material is patterned and drilled with a high-powered laser....
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5434827 |
Matching layer for front acoustic impedance matching of clinical ultrasonic tranducers
An ultrasonic probe having one or more piezoelectric ceramic elements, each having a respective bulk acoustic impedance. Each element has a respective front face and a respective piezoelectric...
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