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| Number | Title | Issue Date |
| 7800284 | Electroacoustic transducer with annular electrodes An electroacoustic transducer, particularly for underwater use, having a ceramic body (10) and a pair of electrodes, whose flat electrodes (11, 12) are arranged on mutually averted end faces (101, 102) of the ceramic body (10). At least o... | 09/21/2010 |
| 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 internal volume, the housing configured to couple to a spoolpiece of a... | 07/07/2009 |
| 7456551 | Packaging and integration system for micro sensors in the marine environment The integrated unmanned, affordable, microsystem in accordance with the present invention is used to deploy physical or chemical sensors for continuous monitoring of sea space over large time periods. The microsystem is capable of measuring ocean physical parameters... | 11/25/2008 |
| 7382082 | Piezoelectric transducer with gas matrix A piezoelectric transducer defined by two faces comprises a plurality of piezoelectric cylinders. The axial length and composition of the piezoelectric cylinders determines the frequency of the transducer when excited. The axial ends of the piezoelectric cylinders a... | 06/03/2008 |
| 7339494 | Acoustic telemetry transceiver One embodiment includes an apparatus that includes a piezoelectric transducer to generate an acoustic signal that is to modulate along a mandrel, wherein the piezoelectric transducer includes at least one piezoelectric element and at least one electrode that is with... | 03/04/2008 |
| 7336019 | Apparatus, circuitry, signals, probes and methods for cleaning and/or processing with sound The invention utilizes multiple frequency ultrasound generators driving multiple frequency harmonic transducer arrays at sweeping frequencies into the megasonic range. Generator signals that increase cavitation efficiency and that have successive time periods with p... | 02/26/2008 |
| 7322251 | Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors A method, apparatus and system are provided to measure the process flow of a fluid or medium traveling in a pipe. The system and apparatus feature a standoff and piezoelectric-based sensor arrangement having a plurality of standoffs arranged on a pipe and a pluralit... | 01/29/2008 |
| 7312559 | Stator and ceramic tube type ultrasonic motor using the same The present invention relates to a ceramic tube type ultrasonic motor having a stator including a tube-type elastic body that is formed of a ceramic material; and a plurality of piezoelectric diaphragms that are attached on the outer peripheral surface of the elasti... | 12/25/2007 |
| 7288878 | Piezoelectric transducer assembly A transducer assembly may comprise a thickness-mode piezoelectric ceramic body, a pair of foil conductors with mesh end portions, and a coupling medium used to fill in the interstices in the meshes. The foil conductors are held in contact with the electrode layers b... | 10/30/2007 |
| 7276839 | Bondable fluoropolymer film as a water block/acoustic window for environmentally isolating acoustic devices A combination transducer and water-blocking film for acoustic signaling through ambient water. The water-blocking film has an etched fluoropolymer film and adjacent bonding film interposed between the transducer and the water. Potting material extends adjacent to an... | 10/02/2007 |
| 7270002 | Humidity sensor element, device and method for manufacturing thereof A humidity sensor element, a humidity sensor device and a method for manufacturing thereof are provided. The humidity sensor element includes a substrate having a nanocomposite film as sensing material, wherein said nanocomposite film consists of carbon nanotube/per... | 09/18/2007 |
| 7257489 | Quadrupole acoustic shear wave logging while drilling A tool generates signals indicative a shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiv... | 08/14/2007 |
| 7247977 | Ultrasonic processing method and apparatus with multiple frequency transducers Ultrasonic processing apparatus and methods are disclosed, which includes multiple transducers of at least two different resonant frequencies supplying ultrasonic energy to a liquid filled tank containing components to be cleaned or processed ultrasonically. The tra... | 07/24/2007 |
| 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 |
| 7211173 | System for inhibiting fouling of an underwater surface A marine fouling inhibiting system comprises first and second conductors which are made of a polymer matrix, such as vinyl ester, and a suspended conductor, such as graphite powder or particles. This type of conductive material is formed to provide two sections of a... | 05/01/2007 |
| 7207397 | Multi-pole transmitter source Methods and apparatus facilitating logging-while-drilling (LWD) using a multi-pole acoustic transmitter source. The multi-pole transmitter source enables measurement of formation velocities, including shear wave velocities through formations that are slower than vel... | 04/24/2007 |
| 7190105 | Sound or ultrasound sensor A sound or ultrasound sensor having a radiation characteristic with a preferably small beam angle and producing very little interference signals, including a pot-shaped housing closed at its bottom end by a floor, a piezoelectric element for producing and/or receivi... | 03/13/2007 |
| 7173542 | Data relay for casing mounted sensors, actuators and generators A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the ... | 02/06/2007 |
| 7161280 | Ultrasonic transducer and method of joining an ultrasonic transducer The invention concerns an ultrasonic transducer, which is assembled from several parts. These parts are a protecting plate, a piezoelectric disc and a housing. Joining of the parts for transducers are normally done by means of TIG welding or laser welding, but these... | 01/09/2007 |
| 7119478 | Piezoelectric step-motion actuator A step-motion actuator using piezoelectric material to launch a flight mass which, in turn, actuates a drive pawl to progressively engage and drive a toothed wheel or rod to accomplish stepped motion. Thus, the piezoelectric material converts electrical energy into ... | 10/10/2006 |
| 7104357 | Device for generating focused elastic waves in a material medium such as underground, and method using same An electromechanical device for generating elastic waves in a material medium such as the subsoil in a frequency range where the wavelengths of the waves generated are great in view of the dimensions of the device, and method of implementation. The device comprises ... | 09/12/2006 |
| 7105982 | System for optimal energy harvesting and storage from an electromechanical transducer A device for collection of energy from mechanical disturbances and distribution of that energy to an electrical load. A transducer converts mechanical energy in the form of forces and displacements into electrical energy in the form of charge pulses. The charge puls... | 09/12/2006 |
| 7103022 | Communication control method and apparatus in mobile communication system A communication control method used in a cellular mobile communication system in which each base station can radiate radio wave beams to a plurality of directions and each base station communicates with mobile stations by using the same frequency is provided in whic... | 09/05/2006 |
| 7093343 | Method of manufacturing an acoustic transducer An acoustic transducer design having a slotted oval-shaped shell and active transducer elements located on the inner surface of the shell is disclosed. The design provides a high power, ultra-low frequency oval projector having a number of applications, including un... | 08/22/2006 |
| 7082810 | Gas sensor A gas sensor (10) including a measurement chamber (28) into which a gas GS is flown and a detection element main body (40) facing the measurement chamber (28). The detection element main body (40) includes an element case 42, | 08/01/2006 |
| 7069795 | Sensor using electro active curved helix and double helix Various sensors use an electro-active device (11) electrically connected to a detector circuit. The electro-active device (11) comprises an electro-active structure in the form of a continuous electro-active member (12) curving in a helix around... | 07/04/2006 |
| 7068806 | Condensed speaker system A highly miniaturized (condensed) speaker system provides the same desirable performance characteristics as a full size acoustic suspension speaker system by incorporating a combination of one or more low pressure chambers and optionally one or more high pressure ga... | 06/27/2006 |
| 7046165 | Method for collecting geological data ahead of a drill bit A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the ... | 05/16/2006 |
| 7040332 | Method and apparatus for megasonic cleaning with reflected acoustic waves A system for cleaning a substrate includes a tank defining an inner cavity between a base and sidewalls extending therefrom. A source of acoustic energy affixed to an outer surface of one of the sidewalls. The tank is configured to decouple a direction associated wi... | 05/09/2006 |
| 7038358 | Electro-active transducer using radial electric field to produce/sense out-of-plane transducer motion An electro-active transducer includes a ferroelectric material sandwiched by first and second electrode patterns. When the device is used as an actuator, the first and second electrode patterns are configured to introduce an electric field into the ferroelectric mat... | 05/02/2006 |
| 7004016 | Probe system for ultrasonic processing tank The invention provides systems, methods and apparatus for processing delicate parts within a process tank such as an ultrasonic tank. Typically, one or more transducers connect to the tank and respond to drive signals from a generator to produce ultrasound within pr... | 02/28/2006 |
| 6993812 | Method of manufacturing the piezoelectric transducer Inner individual electrodes are formed at intervals on a piezoelectric ceramic layer so as to correspond in a one-to-one relationship with ink channels, and an inner common electrode are formed on another piezoelectric ceramic layer. The required number of piezoelec... | 02/07/2006 |
| 6960869 | Acoustic driver assembly for a spherical cavitation chamber An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). ... | 11/01/2005 |
| 6958569 | Acoustic driver assembly for a spherical cavitation chamber An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). ... | 10/25/2005 |
| 6950373 | Multiply resonant wideband transducer apparatus An electro-mechanical transducer is disclosed, which provides a wideband response by activating successive multiple resonant frequencies in a way which provides additive output between the resonant frequencies. A three mode wideband high output transducer is also di... | 09/27/2005 |
| 6946773 | Apparatus and methods for cleaning and/or processing delicate parts The invention utilizes harmonics of certain clamped ultrasound transducers to generate ultrasound within the liquid of an ultrasonic tank and in a frequency range of between about 100 khz to 350 khz (i.e., “microsonic” frequencies). The application of microsonic... | 09/20/2005 |
| 6936953 | Use of a piezo-active device and an appliance and a system including it A piezo-active device includes a piezo-electric element and an elastically deformable shell in which the piezo-electric element is disposed. The use of this piezo-active device includes, for supplying power to an electrical circuit connected to the piezo-electric el... | 08/30/2005 |
| 6922374 | Double-ended geophone A geophone including conductive terminals positioned on opposite sides of the geophone housing. The geophone includes a pair of coils resiliently mounted within the geophone housing and a magnet. A first end plate, a first spring, and a first coil support provide a ... | 07/26/2005 |
| 6919669 | Electro-active device using radial electric field piezo-diaphragm for sonic applications An electro-active transducer for sonic applications includes a ferroelectric material sandwiched by first and second electrode patterns to form a piezo-diaphragm coupled to a mounting frame. When the device is used as a sonic actuator, the first and second electrode... | 07/19/2005 |
| 6919668 | Composite piezoelectric element A composite piezoelectric element has a layered configuration of a plurality of unit composite sheets. Each of the unit composite sheets includes a resin layer and a plurality of columnar piezoelectric elements arranged on the resin layer. ... | 07/19/2005 |
