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7599254 Transducer static discharge methods and apparatus  
Light exposure may reduce the static charge inside a capacitive membrane transducer. For example, ultraviolet light shines on or in a cell. The light increases the energy of the charge carrier...
7580323 Tunable optical assembly with vibration dampening  
An optical assembly is formed by one or more piezoelectric fiber composite actuators having one or more optical fibers coupled thereto. The optical fiber(s) experiences strain when actuation...
7522475 Ultrasonic sensor and obstacle detection device  
An ultrasonic sensor includes: a first vibrator for transmitting an ultrasonic wave; multiple second vibrators for outputting a reception signal of a reflection wave; a casing having a bottom for...
7522474 Ultrasonic sensor having compressively deformed spring resiliently attaching sensor body and bezel  
An ultrasonic sensor has a sensor body and a bezel having a metal spring attached on a side wall thereof for installation on a vehicle component. A free end of the metal spring is positioned to...
7477572 Microfabricated capacitive ultrasonic transducer for high frequency applications  
The invention relates to an electro-acoustic transducer, particularly an ultrasonic transducer, comprising a plurality of electrostatic micro-cells of the cMUT type. The electrostatic micro-cells...
7474590 Pressure wave generator and process for manufacturing the same  
Even when compression stress is generated because a volume of a thermal insulation layer 2 is expanded due to oxidized by oxygen in the air, occurrence of cracks and fractures of the thermal...
7447324 Piezoelectric sounding body and electronic device using the same  
Electrode layers 22 A- 22 C, 24 A- 24 C are formed on both main surfaces of each of piezoelectric layers 20 A, 20 B. Voltages of different polarities are respectively applied to the electrode...
7349293 Pressure control apparatus and rotation drive mechanism  
A pressure control apparatus according to the present invention is comprised of a magnetostrictive element section disposed between respective one ends of rotating rods which have the one ends...
7327637 Acoustic pulse actuator  
The invention provides an acoustic actuator, including an acoustic stress wave generator and an actuation material operatively positioned relative to the acoustic stress wave generator for delivery...
7283425 Apparatus for measuring flow noise of water over a hydrophone  
A water flow noise measuring apparatus comprising: a frame; a beam comprising a distal and a proximal end, where the proximal end is pivotably coupled to the frame; a hydrophone capable of...
7275298 Ultrasonic printed circuit board transducer  
There is provided methods for producing an ultrasonic transducer assembly. The methods generally comprise the steps of creating a multi-layered rigid or flexible printed circuit board, having a top...
7262542 Ultrasound radiation device into a material  
When input electric signals E i (i=1, 2, . . . , n) with frequencies f i (i=1, 2, . . . , n), respectively, are applied to an input interdigital transducer, elastic waves are excited in a...
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...
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...
7203133 Ultrasound sensor system  
The invention relates to an ultrasound sensor system, especially for a welding electrode, comprising a sensor ( 5, 6, 7, 10 ) which, during the detection process, passes ultrasonic waves of a...
7087970 Laminated structure, method of manufacturing the same and ultrasonic transducer array  
A laminated structure with less breakage of an insulative layer due to stress and easy interconnection. The laminated structure includes at least a first electrode layer, a dielectric layer and a...
7019621 Methods and apparatus to increase sound quality of piezoelectric devices  
A piezoelectric transducer comprises a piezoelectric component, an acoustic member attached to one of the surfaces of the piezoelectric component and a dampening material of low elastic modulus...
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.
6909670 Ultrasonic sensor assembly for a vehicle reversing radar  
An ultrasonic sensor assembly for a vehicle reversing radar has an ultrasonic sensor ( 10 ) with two electric wires ( 12 ). A sleeve ( 20 ) is made of rubber material and has a chamber ( 22 )...
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...
6834992 Acoustic pyrometer  
An acoustic pyrometer measures the average gas temperature across a wide space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an...
6763723 Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators  
A sensor device for detecting vibration, including a laser light, a first optical fiber for transmitting the laser light, an oscillator to receive the transmitted laser light and reflect the light...
6639872 Remote energy supply process and system for an electronic information carrier  
Remote energy supply process and system for an electronic information carrier. Known processes and devices do not allow supplying energy wirelessly to an information carrier arranged inside a...
6617042 Dielectric coating for transduction drivers  
A degassed polyester varnish is applied to the transduction driver to increase surface dielectric strength (insulation resistance), driver voltage breakdown, physical protection, and heat and water...
6566265 Method of working piezoelectric substance and method of manufacturing composite piezoelectric substance  
A method of working a piezoelectric substance, which comprises the steps of, forming, on one surface of a piezoelectric block, an etching mask having an aperture which defines a boundary region...
6545947 Acoustic matching material, method of manufacture thereof, and ultrasonic transmitter using acoustic matching material  
An acoustic matching member 1 is used, when a sound is propagated from a first object to a second object, for matching an acoustic impedance of the first object and an acoustic impedance of the...
6542244 Variable sensitivity acoustic transducer  
The gauge length of an acoustic signal detector is dynamically variable by adjusting the location of an induced light reflection interface within a section of optical waveguide to which an acoustic...
6532193 Ultrasound sensor  
In an ultrasonic sensor, including a housing having a plug connector, an ultrasonic converter, and a circuit board, the housing is divided into a support and a hood enclosing the support. The...
6490228 Apparatus and method of forming electrical connections to an acoustic transducer  
An apparatus and method for forming electrical connections in an acoustic transducer wherein a non-conductive bonding material is interposed between a conductive surface on the transducer and a...
6370086 Ultrasound sensor for distance measurement  
An ultrasound sensor has a housing, a piezoelectric ceramic element and a plurality of isolating layers received in the housing. The housing has a tapered rectangle chamber defined therein for...
6367324 Detecting device  
A detecting device of the present invention includes a U-shaped case, a horn disposed in a leg portion of the case and outputting sound waves, a receiver disposed in a leg portion and converting...
6298726 Acoustic impedance measuring apparatus using ultrasonic waves  
An acoustic impedance measuring apparatus emits ultrasonic waves to a target measurement object and measures the acoustic impedance of the target measurement object by ultrasonic waves fed back...
6295247 Micromachined rayleigh, lamb, and bulk wave capacitive ultrasonic transducers  
A micromachined capacitive ultrasonic transducer is used to generate and detect Rayleigh, Lamb, and bulk waves in a solid substrate. The transducer contains a substrate with a conductive back...
6185155 Support for a waveguide for conducting mechanical waves and method for producing a support for a waveguide  
A support for a waveguide for conducting mechanical waves has a high proportion of gas and a low proportion of solid material. The support may include a plurality of annular flanges spaced along...
6173074 Acoustic signature recognition and identification  
An acoustic signature recognition and identification system receives signals from a sensor placed on a designated piece of equipment. The acoustic data is digitized and processed, via a Fast...
6151398 Magnetic film ultrasonic emitter  
An ultrasonic emitter device having broad frequency range capacity with relatively large diaphragm displacement compared to typical electrostatic diaphragm movement. The device includes a core...
6111818 Low voltage piezoelectric actuator  
An actuator includes a ceramic body having a base and an array of tube-shaped or blade-pair-shaped piezoelectric or electrostrictive ceramic elements defining an enclosure and integral with the...
6108433 Method and apparatus for a magnetically induced speaker diaphragm  
An ultrasonic emitter device having broad frequency range capacity with relatively large diaphragm displacement compared to typical electrostatic diaphragm movement. The device includes a core...
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...
6070467 Electromagnetic acoustic transducer (EMAT) system and method for eliminating noise produced by static discharge  
The present invention allows for the fabrication of an EMAT system that eliminates static charge impulse noise. The EMAT system includes an EMAT, wear layer, and magnet. If the wear layer is made...
6065562 System for imparting compressional and shear waves into the earth  
A seismic vibrator system for imparting compressional and shear wave vibrations into the earth has an earth contacting base with a vertical post. A tubular hub is slidably received on the post in a...
6061457 Waterproof microphone and speaker  
A waterproof microphone and speaker (10) having a waterproof handle (12). A waterproof microphone (14) is securely attached to a top end of the handle (12). At least one microchip (16) is contained...
5956292 Monolithic micromachined piezoelectric acoustic transducer and transducer array and method of making same  
A monolithic micromechanical piezoelectric acoustic transducer with integrated control circuit includes a support member; a piezoelectric medium disposed on the support member; first and second...
5940347 Directed stick radiator  
An elongate, acoustic radiator (referred to as a directed stick radiator or stick radiator) consists of an exciter or oscillator emitter (11), that excites or propagates mechanical wave motion...
5922962 Sparse two-dimensional transducer array with compound lens  
A two-dimensional ultrasonic transducer for forming images. The transducer has a plurality of transducer elements for producing ultrasonic bursts in a predetermined manner, and receiving reflected...
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...
5869764 Ultrasonic sensor  
An ultrasonic sensor for performing sensing a spatial area and/or measuring ontactless a distance has at least one ultrasonic transducer for sending ultrasonic impulses and/or receiving the echo of...
5841736 Low voltage piezoelectric transducer and method  
A transducer including a ceramic body having a base and an array of tube-shaped piezoelectric or electrostrictive ceramic elements integral with the base. A first electrode contacts the tube wall...
Matches 1 - 50 out of 310 1 2 3 4 5 6 7 >