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| Number | Title | Issue Date |
| 8082794 | Ultrasonic probe and piezoelectric transducer A ultrasonic probe has a plurality of piezoelectric transducers arranged in the array direction. Each piezoelectric transducer has a piezoelectric element which vibrates in the thickness direction. A signal electrode is formed on the lower surface of the piezoelectr... | 12/27/2011 |
| 7410464 | Wave generating device A wave generating device including a wave transducer adapted to generate an energy wave, and a beam shaping device defined by revolution of a curve about an axis of revolution, the curve being arranged with respect to the transducer in a plane of the curve so as to ... | 08/12/2008 |
| 7395711 | System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy A system for determining property of multiphase fluids based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection... | 07/08/2008 |
| 7370527 | Liquid level detecting apparatus A liquid level detecting apparatus has an ultrasonic sensor, a reflector, a first pipe and a second pipe. The reflector reflects an ultrasonic wave from the ultrasonic sensor to a liquid level, and the ultrasonic sensor detects a reflection wave reflected on the liq... | 05/13/2008 |
| 7360403 | Measurement and control of asphaltene agglomeration in hydrocarbon liquids A method is provided for measuring the agglomerative state of asphaltenes in oil by applying an acoustic signal to the oil, detecting the scattered acoustic energy and using this detected signal to determine the relative particle size distribution of the asphaltene ... | 04/22/2008 |
| 7360292 | Method of minimizing inter-element signals for surface transducers The present invention provides a method of packaging surface microfabricated transducers such that electrical connections, protection, and relevant environmental exposure are realized prior to their separation into discrete components. The packaging method also isol... | 04/22/2008 |
| 7329975 | Ultrasonic sensor An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of conver... | 02/12/2008 |
| 7301724 | Transducing head Determining an error in position of at least two heads coupled to a piezoelectric material, and changing a potential applied to a piezoelectric material to reduce the error in position of the at least two heads. ... | 11/27/2007 |
| 7288069 | Ultrasonic probe and method of manufacturing the same An ultrasonic probe is characterized in that a piezoelectric member 111 formed of solution-based single-crystal containing at least plumbum titanate is sandwiched between resin layers 113 and 115 having smaller acoustic impedance than the piezoe... | 10/30/2007 |
| 7285897 | Curved micromachined ultrasonic transducer arrays and related methods of manufacture A curved sensor device, such as an ultrasonic transducer array, is fabricated from a flat micromachined sensor (such as cMUT or pMUT) array constructed using micromachined electromechanical systems (MEMS) techniques. The device comprises: a support structure compris... | 10/23/2007 |
| 7278513 | Internal lens system for loudspeaker waveguides This invention provides a lens system for a loudspeaker. The loudspeaker may include a driver unit and a waveguide attached to the driver unit. The loudspeaker further may include a lens system. The lens system may include a plurality of plates. The plates may be po... | 10/09/2007 |
| 7272975 | Ultrasonic beam shaping device An ultrasonic beam shaping device includes a plate-like beam shaping element formed of opaque material. The beam shaping element has first and second conical surfaces, with a common axis, formed as opposite surface portions of the beam shaping element. A cylindrical... | 09/25/2007 |
| 7263888 | Two dimensional phased arrays for volumetric ultrasonic inspection and methods of use The present disclosure provides for the application of a two-dimensional ultrasonic phased array (100), formed of a plurality of transducers (102) arranged in a rectilinear pattern, for material and volumetric component testing. The two-dimensional arr... | 09/04/2007 |
| 7234354 | Ultrasonic probe and inspection method and system A method of inspecting a component includes immersing the component in a coupling medium with material velocity cw and immersing an ultrasonic (UT) probe having at least one transducer in the coupling medium. The UT probe has a convex lens with acoustic v... | 06/26/2007 |
| 7207223 | Toroidal-type continuously variable transmission component and method for evaluating the same A toroidal-type continuously variable transmission component, such as an input disk, an output disk, an inner ring of a power roller bearing, and an outer ring of the power roller bearing, which is functioned as a rolling member, has a layer a depth of which is 0.5 ... | 04/24/2007 |
| 7204342 | Sound focus speaker of gas-filled sound lens attachment type A sound focus speaker adopting a gas-filled sound lens enhances efficiency of transferring sound from a source to target area and of protecting a spread of transferred sound. The sound focus speaker includes a gas-filled sound lens, sound sources for generating soun... | 04/17/2007 |
| 7204142 | Liquid level detecting apparatus A guide pipe is formed from a metal material, and its internal cross section has a circular shape whose diametric dimension gradually becomes smaller with a distance from an ultrasonic sensor. That is, the guide pipe is formed so that a route for transmitting an ult... | 04/17/2007 |
| 7194907 | Method for measuring part thickness having an external coating using impedance matching delay lines An ultrasonic transducer for measuring a part with a coating having at least one acoustic transducer, and a buffer delay line having an impedance matched to an impedance of the coating. ... | 03/27/2007 |
| 7150193 | Method for detection of defects in anisotropic materials Disclosed herein is a method for imaging anisotropic media comprising selecting multiple points within the anisotropic media, which is to be imaged; determining an acoustic path between each selected point in the anisotropic media and a receiver position on the surf... | 12/19/2006 |
| 7117738 | Liquid level detecting apparatus A guide pipe is formed from a metal material, and its internal cross section has a circular shape whose diametric dimension gradually becomes smaller with a distance from an ultrasonic sensor. That is, the guide pipe is formed so that a route for transmitting an ult... | 10/10/2006 |
| 7110324 | Universal replaceable back radar The present invention discloses a universal replaceable back radar, wherein a head sleeve and a vehicle-reversing module thereof are separately designed and coated, an ultrasonic head is coupled to the connecting block of the vehicle-reversing module, an angle-adjus... | 09/19/2006 |
| 7075215 | Matching layer assembly for a downhole acoustic sensor An acoustic sensor for use in a downhole measurement tool is provided. The acoustic sensor includes a piezoelectric transducer and a matching layer assembly having at least one matching layer and a barrier layer. In various exemplary embodiments, the at least one ma... | 07/11/2006 |
| 7047132 | Mobile vehicle sensor array An improved sensor array for a mobile vehicle. The vehicle includes a centerline parallel to a vehicle velocity vector. The sensor array comprises a first sensor mounted to the mobile vehicle at a maximum lateral distance from the centerline near a first side of mob... | 05/16/2006 |
| 6952967 | Ultrasonic transducer An ultrasonic transducer is provided having a transduction element in the form of a truncated cone. The angle of the transduction element is selected so that the majority of the acoustic energy incident on the target is refracted beyond the longitudinal critical ang... | 10/11/2005 |
| 6948369 | Methods for ultrasonic inspection of spot and seam resistance welds in metallic sheets and a spot weld examination probe system (SWEPS) An external focused ultrasonic beam, non-destructive, open-air, inspection method of sheet metal spot and seam weldments using a probe in combination with motion measurement of the probe over the weldments during inspection without immersion of the material. Reflect... | 09/27/2005 |
| 6949732 | Optical apparatuses using the near-field light Optical apparatuses are provided that use near-field light, where high spatial resolution and high sensitivity are made compatible. Highly intense near-field light is generated in a narrow area using localized plasmons that are produced in a metal pattern 106 | 09/27/2005 |
| 6925882 | Methods for ultrasonic inspection of spot and seam resistance welds in metallic sheets Spot and seam weldments in sheet metal components are inspected by a method in which a focused ultrasonic beam is directed into the weldment from the outside surface together with measuring the motion of the ultrasonic beam over the weldment. Reflected ultrasonic wa... | 08/09/2005 |
| 6920791 | Ultrasound monitoring of overlapping welded joints between sheets In a method and a device for the ultrasonic monitoring of overlapping welded joints between a first sheet and a second sheet pulses are irradiated at an angle of between 15 and 80° into the first sheet by a first rotating probe head. The rotating probe head is arra... | 07/26/2005 |
| 6907786 | Device for injecting ultrasonic waves into a medium The invention is a device for coupling ultrasonic waves into a medium via a boundary surface, including at least one ultrasonic-wave transducer unit, which couples ultrasonic waves into the medium via a coupling medium provided between the ultrasonic-wave-generating... | 06/21/2005 |
| 6904921 | Indium or tin bonded megasonic transducer systems A megasonic cleaning system comprised of a container, a resonator, one or more piezoelectric crystals and a bonding layer comprised of indium or tin for attaching the piezoelectric crystal to the resonator. The resonator comprises a material selected from the group ... | 06/14/2005 |
| 6877375 | System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy A system for determining a property of a fluid based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection spectru... | 04/12/2005 |
| 6840107 | Acoustic microscope An acoustic microscope is disclosed having an acoustic lens formed of fused metal and glass. A high speed analogue to digital converter and a pulse generator/receiver are also disclosed. Automated V(z) curve measurement produces quantitative elastic properties of th... | 01/11/2005 |
| 6768065 | Sensor device for a vehicle seat A sensor device (11) for a vehicle seat, in particular a motor vehicle seat, has at least one sensor (15) for the detection of forces inside the vehicle seat. The vehicle seat has at least one bearing area between two components that are mobile relativ... | 07/27/2004 |
| 6298727 | Apparatus for acoustic inspection of a workpiece in arbitrary scanning orientations An acoustic inspection device having a transducer housing opening to a face of the device to be disposed opposite a workpiece to be inspected. That face of the device having selectively located multi-piece flexible material of a selected length extending ... | 10/09/2001 |
| 6269700 | Contactless ultrasonic device for dimensional inspection An acoustic detector which includes at least one emitter unit with a solid tapered profile spike (C) associated with an element (X) for exciting the spike so as to propagate ultrasound waves in an antisymmetrical propagation mode in the spike. The device ... | 08/07/2001 |
| 6253619 | Adjustable acoustic mirror An ultrasonic inspection element and method are provided for improved ultrasonic inspection of curved entry surface parts. The transducer element may be spherically focused, or have a flat surface. The transducer/mirror element combination is used to insp... | 07/03/2001 |
| 6250162 | Ultrasonic sensor An ultrasonic sensor includes a case member and a piezoelectric element. The case member has a hollow therein and a bottom portion provided at one end of the hollow. The bottom portion has a thick portion which extends along a first direction and a pair o... | 06/26/2001 |
| 6237419 | Aspherical curved element transducer to inspect a part with curved entry surface An ultrasonic inspection element and method of fabrication are provided for ultrasonic inspection of curved surface parts. Various points on a transducer are located. These points include the location where a ray starts, to the desired focal point in the ... | 05/29/2001 |
| 6234025 | Ultrasonic inspection apparatus and method using a focused wave device An ultrasonic pulse echo inspection apparatus and method for detecting structural failures. A focus lens is coupled to the transducer to focus the ultrasonic signal on an area to be inspected and a stop is placed in the focus lens to block selected ultras... | 05/22/2001 |
| 6127942 | Ultrasonic power sensory system A system includes a first transducer and a second transducer coupled together through a coupling medium communicating undulating pressure wave from the first transducer to the second transducer for the transfer of electrical power from an external control... | 10/03/2000 |
