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7615912 |
Acoustic transducer
An electroacoustic transducer having a tail mass, a head mass and at least two parallelepiped shaped piezoelectric material elements disposed between and attached to the tail mass and the head mass...
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7612486 |
Ultrasonic probe, backing material for ultrasonic probe, and method of manufacturing the same
A backing material that is advantageous in insulation property and can realize a desired acoustic impedance without making the cross-linking and curing reaction of elastomer or resin as a parent...
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7612485 |
Ultrasonic sensor
An ultrasonic sensor for detecting an ultrasonic wave, which is output from an ultrasonic generator and reflected by an object to be detected, the ultrasonic sensor includes: an acoustic matching...
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7607352 |
Ultrasonic sensor transmitting and receiving ultrasonic frequencies adjusted according to temperature
Components of an ultrasonic sensor are contained in a cylindrical casing having an end wall closing one end of the casing. A vibrator such as a piezoelectric element is disposed in the casing in...
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7598658 |
Ultrasonic probe
An ultrasonic probe includes piezoelectric elements each including grooves parallel to each other and arrayed in a direction substantially parallel to the grooves, and a mixed member which is to...
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7587806 |
Method of manufacturing an ultrasonic sensor
A method of manufacturing an ultrasonic sensor including a case, a piezoelectric element having first and second electrodes, and a conductive member having first and second conductive parts is...
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7583010 |
Hybrid transducer
An embodiment of the invention is directed to a hybrid geometry type acoustic transducer. A hybrid geometry type acoustic transducer as embodied herein leverages different type transducer physical...
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7573183 |
Flextensional vibration-free pressure oscillator
An apparatus for producing pressure oscillation of a fluid, incorporating hermetically sealed casing including a housing, a cover, a hermetic seal, a cylindrical flextensional transducer driven by...
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7573182 |
Ultrasonic transducer
An ultrasonic transducer of the type containing a cylindrical piezoelectric active element mounted on a supporting tube is provided with a backing component made of an electrically and thermally...
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7569975 |
Cable direct interconnection (CDI) method for phased array transducers
A solderless, direct cable interconnect for an array transducer and method for the fabrication thereof. An ultrasonic array transducer includes an acoustic backing layer, a piezoelectric layer...
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7567016 |
Multi-dimensional ultrasound transducer array
In k 31 mode, a vibration is along an axis or orthogonal to the poling or electric field orientation. The direction of vibration is toward a face of an ultrasound transducer array. For each...
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7557492 |
Thermal expansion matching for acoustic telemetry system
Thermal expansion matching for an acoustic telemetry system. An acoustic telemetry system includes at least one electromagnetically active element and a biasing device which reduces a compressive...
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7557490 |
Systems and methods of a transducer having a plastic matching layer
Systems and methods of a transducer having a plastic matching layer. At least some of the illustrative embodiments are transducers comprising a housing (having a proximal end, a distal end and an...
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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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7548014 |
Ultrasonic transducer
An ultrasonic transducer includes a cylindrical cap member having a bottom. A piezoelectric element is bonded to the inner side of a bottom portion of the cap member using a conductive adhesive or...
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7545082 |
Ultrasonic sensor device and ultrasonic transducer
An ultrasonic sensor device includes an ultrasonic transducer and a hollow case. The ultrasonic transducer includes a tubular housing having a bottom, a piezoelectric element and a vibrating...
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7538477 |
Multi-layer transducers with annular contacts
Transducer structures having multiple piezoelectric layer and annular contacts are described.
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7526846 |
Forming piezoelectric actuators
Microelectromechanical systems with structures having piezoelectric actuators are described. The structures each have a body that supports piezoelectric islands. The piezoelectric islands have a...
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7525398 |
Acoustically communicating data signals across an electrical isolation barrier
In one aspect, a data communication system includes a modulator, an integrated acoustic data coupler, and a demodulator. The modulator modulates a carrier signal having a frequency in an operating...
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7518290 |
Transducer array with non-uniform kerfs
A multi-dimensional transducer array is provided. The multi-dimensional transducer array includes a plurality of elements. First and second kerfs acoustically separate the elements. A first width...
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7518288 |
System for megasonic processing of an article
A system for megasonic processing of an article. In one aspect, the system for megasonic processing comprises a rotary support for supporting an article, a dispenser for applying a fluid to a...
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7514851 |
Curved capacitive membrane ultrasound transducer array
CMUT elements are formed on a substrate. Electrical conductors are formed to interconnect between different portions of the substrate. The substrate is then separated into pieces while maintaining...
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7513147 |
Piezocomposite transducer for a downhole measurement tool
An acoustic sensor for use in a downhole measurement tool includes a piezo-composite transducer element. In various exemplary embodiments, the acoustic sensor further includes a composite backing...
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7508118 |
Ultrasonic transducer
Disclosed is an ultrasonic transducer which is composed of a plurality of piezoelectric elements having an electrode on each of two opposite surfaces, an acoustic matching layer arranged on the...
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7508113 |
Apparatus for two-dimensional transducers used in three-dimensional ultrasonic imaging
A single chip transducer apparatus that includes on-chip electronic circuitry which, when connected properly to a two-dimensional matrix of ultrasonic transducer elements, provides enough...
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7504075 |
Ultrasonic reactor and process for ultrasonic treatment of materials
An ultrasound reactor ( 30 ) having a reactor body ( 1 ), a reactor tube ( 9 ) disposed within the reactor body and a magnetostrictor transducer ( 11 ) comprising at least one annular element ( 28...
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7489066 |
Biometric sensing device with isolated piezo ceramic elements
The present invention provides an apparatus for sensing biometric information in a finger with piezo ceramic elements. In one embodiment, the apparatus includes an array of discrete piezo ceramic...
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7483339 |
Acoustic projector and method of manufacture
An underwater acoustic projector comprising one or more cylindrical shell segments ( 8 ), each shell segment ( 8 ) having an even number of drivers ( 10 ) mounted therein, and the method of...
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7471034 |
Ultrasound transducer and method of producing the same
In an ultrasound transducer arrangement comprising at least one piezoelectric body with a lower and an upper electrode and a coupling layer including a wafer on which the ultrasound transducers are...
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7466066 |
Longitudinally driven slotted cylinder transducer
A longitudinally driven slotted transducer has a tubular member with an axial slot extending from one end to the other end. A drive assembly is disposed across the inner wall of the tubular member...
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7459836 |
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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7456825 |
Acoustic touch sensor with low-profile diffractive grating transducer assembly
A touch sensor having an acoustic substrate, an acoustic transducer, and an acoustically diffractive grating is provided. The grating is disposed between the transducer and the substrate, so that...
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7449821 |
Piezoelectric micromachined ultrasonic transducer with air-backed cavities
A piezoelectric micromachined ultrasonic transducer comprising a substrate and a first dielectric film formed on the substrate. An opening having a sidewall is formed through the substrate and...
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7443081 |
Multi-frequency transmission/reception apparatus
The invention provides a multi-frequency transducer capable of obtaining desired directivity regardless of frequencies. Parallelepiped-shaped transducer elements ( 1 ) are used as transducer...
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7441321 |
Method of manufacturing ultrasound transducer device having acoustic backing
An ultrasonic transducer device comprising: an ultrasonic transducer array micromachined on a substrate; flexible electrical connections connected to the transducer array; and a body of...
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7439656 |
Method for designing ultrasonic transducers with acoustically active integrated electronics
Ultrasonic transducer including a multi-layer transformer arranged between a backing block and piezoelectric layer on each of which at least one matching layer is arranged. The transformer includes...
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7439654 |
Transmission of ultrasonic energy into pressurized fluids
Ultrasonic probe comprising an elongate body having a first end and a second end, an ultrasonic transducer attached to the probe at or adjacent the first end, and an enlarged support section...
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7436102 |
Piezoelectric thin-film resonator and method for producing the same
A method for producing a piezoelectric thin-film resonator includes forming a sacrificial layer on a substrate, performing a plasma treatment on the sacrificial layer so that the surface roughness...
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7432638 |
Acoustic backing composition, ultrasonic probe and ultrasonic diagnostic apparatus
Disclosed is an acoustic backing composition comprising an ethylene-vinyl acetate copolymer containing 20 to 80% by weight of the vinyl acetate units and a filler contained in the ethylene-vinyl...
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7425792 |
Acoustic driver assembly with restricted contact area
An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat...
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7425791 |
Acoustic driver assembly with recessed head mass contact surface
An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat...
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7424772 |
Stacked bulk acoustic resonator band-pass filter with controllable pass bandwidth
The band-pass filter has a stacked pair of film bulk acoustic resonators (FBARs) and an acoustic decoupler between the FBARs. Each of the FBARs has opposed planar electrodes and a layer of...
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7414350 |
Acoustic mirror structure for a bulk acoustic wave structure and method for fabricating same
According to one embodiment of the invention, an acoustic mirror structure situated in a bulk acoustic wave structure includes a number of alternating low acoustic impedance and high acoustic...
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7411335 |
Sonic or ultrasonic transducer
A sonic or ultrasonic transducer, which is embodied as a radial oscillator. So that the sonic or ultrasonic transducer can be used at high temperatures, a matching layer is located between the...
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7408290 |
Power driving circuit for controlling a variable load ultrasonic transducer
The present invention is directed to a high-powered (e.g., >500 W) ultrasonic generator for use especially for delivering high-power ultrasonic energy to a varying load including compressible...
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7405510 |
Thermally enhanced piezoelectric element
A system and method for removing unwanted heat generated by a piezoelectric element of an ultrasound transducer. Some implementations have high thermal conductivity (HTC) material placed adjacent...
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7397167 |
Ultrasonic wave generating device
An ultrasonic wave generating device includes a substrate, a heat insulation layer on the substrate, a membrane heating portion on the heat insulation layer, and a membrane oscillator on the...
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7389569 |
Method for manfacturing an acoustic matching member
A method for manufacturing an acoustic matching member, the acoustic matching member being incorporated into an ultrasonic transducer for transmitting and receiving ultrasonic waves, and including:...
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7388317 |
Ultrasonic transmitting/receiving device and method for fabricating the same
An ultrasonic transmitting/receiving device that effectively suppresses ringing during emission of ultrasonic waves and improves time resolution when measuring a sonic velocity includes a pair of...
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7385334 |
Contour mode resonators with acoustic reflectors
A microelectromechanical (MEM) resonator is disclosed which has a linear or ring-shaped acoustic resonator suspended above a substrate by an acoustic reflector. The acoustic resonator can be formed...
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