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| Number | Title | Issue Date |
| 5837900 | System and method for detecting metal ion oxidation in pacing lead There is provided a system and method for determining the existence of metal ion oxidation degradation in an implanted pacing lead. A micro-vibration driver, preferably operating at a sonic frequency matched to an ultrasound detector, is used to vibrate t... | 11/17/1998 |
| 5679899 | Method and apparatus for non-destructive testing of structures A system for non-destructively inspecting or testing for faults or damage in or beneath the surface of structures, such as debonds or delaminations in composite materials, or cracks, broken stringers, delaminations and the like in structures. High energy ... | 10/21/1997 |
| 5668303 | Sensor having a membrane as part of an electromechanical resonance circuit forming receiver and transmitter converter with interdigital structures spaced apart from one another Sensor provided with a thin membrane, capable of storing electrical charges, whose surface is in contact with the chemical, biological, and/or other physical parameters to be measured. The membrane is part of an electromechanical resonance circuit, operat... | 09/16/1997 |
| 5654508 | Method of determining a store's physical inventory New physical principles are used to determine the number of inventory goods on a store's display shelves. One principle involves transmitting waves (mechanical, sound or ultrasound) thru an unknown number of goods resting on an insulated plate. Another pr... | 08/05/1997 |
| 5644085 | High density integrated ultrasonic phased array transducer and a method for making The present invention discloses a high density integrated ultrasonic phased array transducer and method for making. The high density integrated ultrasonic phased array includes a backfill material having an array of holes formed therein. Each of the holes... | 07/01/1997 |
| 5641909 | Scan assembly structure Apparatus is disclosed for providing one hundred percent inspection of natural gas mains under operating flow conditions. The apparatus includes a scan unit assembly which is inserted into the gas main to collect data for the production of graphic images ... | 06/24/1997 |
| 5627319 | Motion acoustic holograph A new method of Acoustic Holography permits moving 3-D scenes by replacing a fixed film record of an interference pattern with a "live interference pattern" which is continuously altered by the information on a rotating CD.... | 05/06/1997 |
| 5625147 | Apparatus and method for monitoring the eating quality of meat A method and apparatus for obtaining information relating to the eating quality of meat. The meat under test may include a hot or cold meat carcass, raw or cooked meat or live animal. The method includes the steps of injecting an acoustic signal into the ... | 04/29/1997 |
| 5614676 | Method of machine vibration analysis for tire uniformity machine A method for analyzing the vibration of a tire uniformity machine having a number of rotating components uses the signals from load cells when the machine idle to output voltage signals that are then amplified and input into a computer as unfiltered, ampl... | 03/25/1997 |
| 5610338 | Rolling or tilting responsible switch A roll or tilt responsive switch includes a housing formed from an electrically conductive material and having an inclined face formed on the bottom to gradually rise concentrically outwardly substantially from the center of the bottom, and a header fixed... | 03/11/1997 |
| 5606129 | Process for scanning inspection of rotationally symmetrical, particularly cylindrical, receptacles using a dynamic gas bearing, and inspection device for said process In order to perform all-around inspection of vials in particular, it is proposed that said vials (1) be dynamically mounted in an air-cushion bearing (13) with bearing shells (21a, 21b), that they be rotated with the air of a suction cup (15) that is radi... | 02/25/1997 |
| 5594176 | Scan assembly and method for transferring power and data across a rotary interface An ultrasonic scan assembly for use in inspecting downhole gas pipes comprises a sensor section which rotates in relation to an end section that remains essentially level forming a rotating interface. The sensor section includes at least one ultrasonic tr... | 01/14/1997 |
| 5591915 | System for the continuous measurement of the resistance of a track to transverse displacement A method of continuously measuring the resistance of a track to transverse displacement comprises the steps of continuously advancing a dynamic stabilizer along the track, applying a power to the dynamic stabilizer to impart oscillations to the track exte... | 01/07/1997 |
| 5591914 | Ultrasonic position sensor A position sensor for measuring the distance from a first position to a second position. The sensor may include an elastic wave generator, an acoustical path over which the elastic wave passes, and a transducer to which the wave passes. A measurement loop... | 01/07/1997 |
| 5591911 | Ultrasound signal processor An ultrasound signal processor for receiving an ultrasound signal from a testing body by a plurality of electro-magnetic transducer elements and processing a plurality of received signals to obtain information of the interior of the testing body is provid... | 01/07/1997 |
| 5589645 | Structure of magnetostrictive shaft applicable to magnetostriction-type torque sensor for detecting torque applied to rotatable shaft and method for manufacturing the same A structure of a magnetostrictive shaft applicable to a magnetostriction-type torque sensor and a method for manufacturing the same can achieve a high torque sensitivity. A shaft parent material is made of a non-magnetic austenitic series metallic materia... | 12/31/1996 |
| 5589637 | Exciter-mounting for shaker table A shaker table (10) for testing and quality control of devices attached to the table is shown. The mounting table (20) has pneumatic exciters (50) attached thereto. The exciters (50) are attached to the mounting table (20) with a mounting bolt (128) and s... | 12/31/1996 |
| 5585563 | Non-contact thickness measurement using UTG A measurement structure for determining the thickness of a specimen without mechanical contact but instead employing ultrasonic waves including an ultrasonic transducer and an ultrasonic delay line connected to the transducer by a retainer or collar. The ... | 12/17/1996 |
| 5583293 | Sonic or ultrasonic transducer The sonic or ultrasonic transducer includes a circular piezo-ceramic disk capable of generating radial oscillations, and a metal ring, which embraces in tight close fitting relationship the circumferential surface area of the disk to form a radial oscilla... | 12/10/1996 |
| 5581037 | Nondestructive evaluation of pipes and tubes using magnetostrictive sensors A method and apparatus for the inspection of ferromagnetic and non-ferromagnetic pipes, tubes or other cylindrical shell structures utilizing the magnetostrictive effect to detect defects such as corrosion pits, wall thinning, and cracks within the struct... | 12/03/1996 |
| 5576492 | Mechanical contour follower A mechanical contour follower is disclosed for maintaining a transducer ninety degrees to a workpiece surface, with respect to longitudinal and transverse axes of the workpiece surface, and for keeping the transducer at a constant distance from the workpi... | 11/19/1996 |
| 5576480 | System and method for testing the integrity of porous elements An apparatus for detecting defects in porous elements including systems and methods for quantifying acoustic signal data. A transducer receives acoustic signals generated within a test chamber by a porous element. A signal processing device may be include... | 11/19/1996 |
| 5574223 | Scan assembly and method using scan rate modulation An ultrasonic scan assembly is adapted to efficiently scan a surface and cross-section of a wall of an elongated cylindrical object. The ultrasonic scan assembly has a rotatable sensor section capable of rotating as the scan assembly is advanced axially a... | 11/12/1996 |
| 5566573 | Capacitive acoustic wave detector and method of using same A capacitor having two substantially parallel conductive faces is acoustically coupled to a conductive sample end such that the sample face is one end of the capacitor. A non-contacting dielectric may serve as a spacer between the two conductive plates. T... | 10/22/1996 |
| 5565627 | Ultrasonic edge detector and control system An ultrasonic edge detector system wherein the lateral position of a moving web or sheet is monitored by projecting an ultrasonic beam from a transmitting transducer toward a receiving transducer and the web edge occludes or shadows more or less of the ul... | 10/15/1996 |
| 5559292 | Method and apparatus for the identification of species A method is disclosed for identifying the presence or concentration of a target species in a sample by transmitting a wave of ultrasonic vibration through the sample and calculating, from measured values for time of flight of the wave through the sample a... | 09/24/1996 |
| 5557047 | Method and apparatus for ultrasonic wave measurement A method and apparatus for ultrasonic wave measurement wherein the time interval between like order echoes selected with respect to adjacent transmitted waves is controlled to be equal to an integral multiple of a period (t3) of a continuous os... | 09/17/1996 |
| 5553500 | Triaxial normal and shear force sensor A triaxial force sensor using a hemispherical target embedded in a compliant layer such as an elastomer and having a plurality of ultrasonic transducers disposed in a plane at equal intervals about the target and vertically and laterally offset from the t... | 09/10/1996 |
| 5551297 | Pipe clogging detecting device A pipe clogging detecting device which incessantly monitors states of a pipe through which fluid is flowing, and when clogging occurs, immediately alarms the occurrence of clogging to operators. The device includes a plurality of containers, a pipe interc... | 09/03/1996 |
| 5551295 | Method and apparatus using ultrasonic and light waves for identification of test specimens The invention relates to a method and an apparatus for determining the authenticity and/or for identifying the respective spatial structure of a test specimen. The test specimen is placed on a surface and is exposed to ultrasonic waves traversing a body c... | 09/03/1996 |
| 5540098 | Transfer device A transfer device an ultrasonic sensor having an oscillating section for oscillating an ultrasonic beam toward wafers which are horizontally arranged in a carrier and a receiving section for receiving a reflected ultrasonic wave, and driving mechanism for... | 07/30/1996 |
| 5535628 | Ultrasonic scanner head and method A scanner head for ultrasonic testing of structures includes a carriage with rollers supporting the carriage for movement over a surface being tested in a selected direction. A transverse frame is supported by the carriage and extends in a second directio... | 07/16/1996 |
| 5533411 | Method and apparatus for nondestructive testing of physical characteristics of a specimen using ultrasonic waves The sound velocity (V) in a cast specimen is measured with ultrasonic wave and the sound velocity ratio (V/Vm) between the sound velocity in said specimen and the sound velocity (Vm) in a specified metal corresponding to said specimen is attained; by conv... | 07/09/1996 |
| 5531117 | Closed loop maximum likelihood phase aberration correction in phased-array imaging systems A phased array ultrasonic imaging system performs a scan in which beamforming time delay errors due to nonuniformity in ultrasound speed within the transmission medium are corrected by estimating and correcting phase aberrations in accordance with the max... | 07/02/1996 |
| 5528924 | Acoustic tool for analysis of a gaseous substance An acoustic technique is employed to identify the species of a sample of refrigerant gas and whether it contains significant contaminants. The refrigerant is admitted into a Helmholtz resonator under controlled pressure, and a drive frequency is swept acr... | 06/25/1996 |
| 5524477 | Quantitative determination of air present in refrigerant sample by measurement of pressure coefficient of resonance frequency An acoustic technique is employed to identify the species of a refrigerant gas and whether it contains significant contaminants. Air in the refrigerant can be tolerated, but must be accounted for in determining the acoustic properties of the sample. The r... | 06/11/1996 |
| 5522265 | Device for the ultrasonic measuring of the defects of a railway track A shoe (1) is provided which includes two housings designed for receiving ultrasonic probes (2) of which the vertical position with respect to the track is adjustable via two pressure cylinders (9). The shoe (1) is connected via two pressure cylinders (13... | 06/04/1996 |
| 5520052 | Method and apparatus for determining material structural integrity A non-destructive method and apparatus for determining the structural integrity of materials by combining laser vibrometry with damping analysis techniques to determine the damping loss factor of a material. The method comprises the steps of vibrating the... | 05/28/1996 |
| 5520061 | Multiple axis transducer mounting collar An improved apparatus and method for determining the existence and severity of a crack in a shaft system is provided. The apparatus includes means for mounting multiple vibration responsive output transducers around an outer circumference of the shaft sys... | 05/28/1996 |
| 5517857 | Apparatus for raising shaker table within thermal chamber A shaker table (10) for testing and quality control of devices attached to the table is shown. The mounting table has pneumatic exciters (50) attached thereto. The mounting table (20) provides uniform distribution of forces applied by the pneumatic excite... | 05/21/1996 |
