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| Number | Title | Issue Date |
| 7770455 | Instruments, related systems, and methods for monitoring or controlling foaming The present invention relates to methods, systems, and instruments (10) for monitoring, detecting or measuring one or more acoustic emissions of a foam. The detected emission(s) may then be used to generate a response, such as one to control an associated pro... | 08/10/2010 |
| 7716987 | Non-contact thermo-elastic property measurement and imaging system for quantitative nondestructive evaluation of materials A non-contact thermo-elastic property measurement and imaging system and method thereof are described. Acoustic energy is incident on a first surface of a specimen under test. The acoustic energy is converted partially into heat by the specimen, causing a slight inc... | 05/18/2010 |
| 7426866 | Acoustic liquid dispensing apparatus A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a container having a chamber for holding a liquid. An orifice is positioned a... | 09/23/2008 |
| 7359803 | Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations X1-XN disposed axially along a pipe 14 for measuring at least one par... | 04/15/2008 |
| 7299676 | Acoustic pressure calibrator A sound pressure level calibrator, which is suitable for sound pressures to be measured in excess of 124 dB and which can be adapted to the installed sound pressure level sensor. This object is attained by a sound pressure level calibrator comprising a pistonphone a... | 11/27/2007 |
| 7254987 | Method and system for conducting an on-site measurement of the density of an insulation material Method for conducting an on-site measurement of a density value of an insulation material is provided, comprising: (a) providing an acoustic source for emitting a sound wave; (b) directing the sound wave emitted from the acoustic source through a waveguide and at an... | 08/14/2007 |
| 7237440 | Flow measurement apparatus having strain-based sensors and ultrasonic sensors A flow measurement apparatus is provided that combines the functionality of an apparatus that uses strain-based sensors and ultrasonic sensors to measure the speed of sound propagating through a fluid flowing within a pipe, and measure pressures disturbances (e.g. v... | 07/03/2007 |
| 7131331 | Non-destructive testing apparatus Apparatus for non-destructively testing material to enable detection of any damage sites, comprising means for generating localized heating at any damage site in the material, and means for imaging the material to enable detection of any localized heating at the dam... | 11/07/2006 |
| 7114392 | Method of analyzing granular composition by acoustic emission The present invention relates to a method for acoustic emission analysis of a granular composition comprising a biologically active compound, said method comprising colliding the granular composition with at least one surface transmitting low frequency vibrations, r... | 10/03/2006 |
| 7107849 | Vibration source probe system A vibration source probe system for detecting the surface waves of vibration coming over the ground or the floor of a building and specifying and displaying a vibration source at a factory or on a road. The position of a vibration source is estimated from a p... | 09/19/2006 |
| 7104127 | Nondestructive method for inspecting cladding tubes The present invention relates to a nondestructive method or inspecting defects of the cladding of a nuclear fuel rod, which is featured by a wave emitter obliquely discharging an inspection wave to an inspected tube and a receiver arranged at a side of the inspected... | 09/12/2006 |
| 7096719 | Apparatus for measuring parameters of a flowing multiphase mixture An apparatus 10 is provided that measures the speed of sound propagating in a multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, mass flow rate, enthalpy and volumetric flow rate of the fl... | 08/29/2006 |
| 7039530 | Fluid measurement Techniques for fluid measurement include the ability to introduce a vibration to a container wall and to detect the vibration after the vibration has propagated at least partially around the container wall. Based on the detection of the vibration, the techniques als... | 05/02/2006 |
| 7032432 | Apparatus and method for measuring parameters of a mixture having liquid droplets suspended in a vapor flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15–18 placed at predetermined axial locations x1–xN disposed axially along a pipe 14 for measuring at least one parame... | 04/25/2006 |
| 7026943 | Acoustic wave ice and water detector An acoustic wave sensor utilizes one or more acoustic waves trapped in an acoustic wave cavity to detect the presence of one or more substances on a surface of the acoustic wave cavity. To detect the presence of ice, a trapped torsional acoustic wave is used. To det... | 04/11/2006 |
| 7024917 | Method and apparatus for an acoustic pulse decay density determination An acoustic transducer is in contact with a near wall that has a much different acoustic impedance than a fluid. The transducer transmits an acoustic pulse into into the wall (such as a plate, a wall of a tube or a wall of a sample chamber) that is in contact with t... | 04/11/2006 |
| 6996481 | Reconstruction of transient acoustic radiation from a finite object subject to arbitrarily time-dependent excitation General algorithms are developed for reconstructing the acoustic field generated by an arbitrary object subject to an arbitrarily time-dependent excitation. These algorithms enable one to visualize a time-domain acoustic pressure wave as it travels through three-dim... | 02/07/2006 |
| 6968740 | Systems and methods for determining an acoustic and/or thermal characteristic of a target material A system and method for determining an acoustic and/or thermal characteristic of a target material are provided. The system includes an acoustic source arranged to direct a sound wave at a target material; a device for measuring a sound pressure generated by at leas... | 11/29/2005 |
| 6968053 | Acoustic signal transfer device The present invention is directed to an acoustic signal transfer device for transferring an acoustic signal produced by a telephone handset in a test setup. The device comprises a handset holder, a microphone holder and an acoustic pathway that extends from the hand... | 11/22/2005 |
| 6957582 | Ultrasonic system and method of gauging aircraft fuel and detecting battle damage An aircraft ultrasonic system for fuel gauging and battle damage detection comprises: at least one ultrasonic transducer disposed at a fuel tank of the aircraft; a first circuit for exciting the at least one ultrasonic transducer to transmit an acoustic pulse toward... | 10/25/2005 |
| 6936009 | Matching layer having gradient in impedance for ultrasound transducers A matching layer for ultrasound transducers has a gradient in impedance value from one surface to the other surface of the matching layer. The matching layer is composed of a plurality of sublayers made of composite materials and securely attached together and is di... | 08/30/2005 |
| 6912906 | Method and apparatus for the production and quality testing of a bonded wire connection Method of producing a bonded wire connection between an electronic component or a subassembly and a carrier by introducing energy from an ultrasound transducer into a wire that is to be bonded. According to this method, during the introduction of energy the impedanc... | 07/05/2005 |
| 6845161 | System and method for performing acoustic analysis of devices A system and method are disclosed which utilize robotic analysis of acoustic data captured during operation of a device to evaluate the operation of such device. An acoustic capture sensor is implemented within a device, such as a paper handling device, automobile, ... | 01/18/2005 |
| 6829959 | Apparatus and method for moving a sensor over a workpiece The apparatus and method for moving a sensor over a workpiece includes a sensor, and an actuating member. The sensor, such as a non-destructive test sensor, is carried by the actuating member, and the actuating member is at least partially disposed within a housing.... | 12/14/2004 |
| 6752018 | Method and apparatus for characterizing an acoustic impedance In one embodiment of the present invention, an apparatus for characterizing an acoustic impedance of an engineering component acoustically coupled to an acoustic waveguide includes: a pressure measurement apparatus adapted to be moved and to be disposed to measure p... | 06/22/2004 |
| 6745629 | Method and apparatus for the production and quality testing of a bonded wire connection A method of producing a bonded wire connection between an electronic component or a subassembly and a carrier by introducing energy from an ultrasound transducer into a wire that is to be bonded. According to this method, during the introduction of energy the impeda... | 06/08/2004 |
| 6651501 | Adaptive equalizer for variable length sound tubes utilizing an electrical impedance measurement In a device having a sound tube and a receiver, a test signal is generated to apply to the receiver. An electrical impedance of the receiver is measured, and a length of the sound tube is estimated by a shift in frequency of at least one of a maximum and ... | 11/25/2003 |
| 6550332 | Real-time noise source visualizing system using acoustic mirror Disclosed is a noise source visualizing system used in a wind tunnel test to measure generated sounds, the system comprising an acoustic mirror for converging sound waves of sounds generated on a surface of a vehicle during a wind tunnel test; a microphon... | 04/22/2003 |
| 6457346 | Bubble measuring instrument and method Method and apparatus are provided for a non-invasive bubble measuring instrument operable for detecting, distinguishing, and counting gaseous embolisms such as bubbles over a selectable range of bubble sizes of interest. A selected measurement volume in w... | 10/01/2002 |
| 6442510 | Method and apparatus for determining transit-time differentials for signal waveforms for real-time pattern recognition, localization and monitoring of optical and acoustic signals A method includes the steps of segment-wise detecting and bringing into coincidence signal waveforms for conversion into monotone and continuous trajectories for real-time pattern recognition, localization, and monitoring optical and acoustic signals. The... | 08/27/2002 |
| 6435030 | Measurement of propagating acoustic waves in compliant pipes A pipe 16 having a produced fluid 18 (liquid an/or gas) and at least two acoustic pressure sensors 20-24, is provided with a cylindrical sleeve 30 attached to the pipe 16 at two locations around a sensing region where the sensors 20-24 are located, the sl... | 08/20/2002 |
| 6386039 | Method and apparatus for determining the acoustic spatial characteristics particularly of a vehicle occupant compartment in a motor vehicle The method and apparatus according to the invention determines the acoustic spatial characteristics of an enclosure, particularly of a vehicle occupant compartment in a motor vehicle. A piece of equipment emits a useful sound together with a test sound. B... | 05/14/2002 |
| 6295467 | Method and device for detecting a reflex of the human stapedius muscle The invention concerns a method of detecting a reflex of the human stapedius muscle, in particular for a hearing test. According to the method, the reflex is triggered by means of an acoustic signal, and the impedance or the variation in impedance brought... | 09/25/2001 |
| 6209387 | System and method for determining thermodynamic properties Disclosed is a system and method for determining the thermodynamic properties and percentage of each component of a multi-component gas medium by using speed of sound in conjunction with other data. The present system comprises a computer system with mean... | 04/03/2001 |
| 6189383 | Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes A method of determining the acoustic impedance of a fluid in a borehole, by gating a reflected acoustic signal into a plurality of time slots, and comparing received energies of the signal for the time slots to obtain a value indicative of the acoustic im... | 02/20/2001 |
| 6134968 | Portable acoustic impedance measurement system A portable acoustic impedance data acquisition and processing system is provided for use with a test object. The system includes a dynamic signal analyzer, a test head, a removable microphone holder, a cylindrical endcap fitting, an amplifier, and one or ... | 10/24/2000 |
| 6119521 | Apparatus and method for measuring the acoustic properties of acoustic absorbers A device for measuring the acoustic absorption properties of materials such as liners for jet engines has a first housing, an acoustic driver configured to provide acoustic energy to the first housing, a second housing attached to the first housing, and a... | 09/19/2000 |
| 6009380 | Technique for eliminating ambiguity when making pulse-echo timing measurements A method of measuring in a material a time-of flight of a signal having a first signal burst and a second signal burst, the first signal burst having a first set of cycles and the second signal burst having a second set of cycles. The method includes iden... | 12/28/1999 |
| 5974884 | Ultrasonic diagnostic apparatus and ultrasonic probe with acoustic matching layer having continuously varied acoustic impedance in the thickness direction In an ultrasonic probe, an acoustic matching layer, which is fixed on the front side of a transducer for transmitting an ultrasonic wave and receiving a reflected wave thereof and matches in acoustic impedance the transducer to a living tissue in an objec... | 11/02/1999 |
| 5754498 | System for measuring ultrasound transmission in materials A system for ultrasound transmission in materials comprising a reference unit, an examination unit, at least a case equipped in at least the examination unit, and a signal processing unit. The reference unit consists of at least an input ultrasonic transd... | 05/19/1998 |
