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| Number | Title | Issue Date |
| 8179134 | Handling robot of magnetic head assembly, magnetic head test method and magnetic head tester An upward warp of a terminal pad of a flexible cable which is kept horizontal by a suction head is prevented by a pressing arm which contacts with an upper surface of a rear portion of the flexible cable. ... | 05/15/2012 |
| 7944204 | Identification of points of interest in a region of the surface of a part and application to the optimization of the path and of the angular position of eddy current probes Identification of points of interest in a region of the surface of a part, by bringing a surface reference into intimate contact with the region is disclosed. The surface reference includes a thin film sufficiently flexible to conform to the region and tracks made o... | 05/17/2011 |
| 7852073 | Method and device for long-range torsional guided-wave inspection of piping with a partial excitation and detection around the pipe circumference Sensor assemblies and methods are described that facilitate the use of a long-range torsional guided-wave inspection system for inspecting pipes, tubes, or other longitudinal cylindrical structures, with a partial excitation and detection around the pipe circumferen... | 12/14/2010 |
| 7405558 | Steam generator mapping with reflections of eddy current signal A method to determine deposits in a steam generator having the steps of creating a calibration standard having at least two rings of deposit material, subjecting the calibration standard to an eddy current signal, wherein an amplitude of the signal reflected from th... | 07/29/2008 |
| 7390307 | Volumetric physiological measuring system and method A system and method for measuring volumes and areas using electromagnetic induction techniques. A current is generated and fed into one of two coil assemblies to induce voltage into another coil assembly to provide accurate values for volume or area. ... | 06/24/2008 |
| 7346999 | Methods and system for inspection of fabricated components Methods and apparatus for inspecting a component are provided. The method includes receiving a plurality of data points that define a shape of the component, fitting the received data points to a curve that defines a predetermined model shape, and comparing the rece... | 03/25/2008 |
| 7345470 | Probe card and method for testing magnetic sensor A probe card comprises a plurality of coils for impressing a magnetic field in changeable directions to a magnetic sensor and a group of probes for detecting an output signal of the magnetic sensor. A manufacturing cost of the magnetic sensor can be decreased. ... | 03/18/2008 |
| 7322249 | Mounting for a probe sensor A robust, easy to mount probe sensor includes an elongated body enclosing a sensor element and an integral flange extending away from the body. The body and flange are formed of material having a relatively low characteristic yield point. First and second generally ... | 01/29/2008 |
| 7293479 | Speed and temperature sensing in separate cavities in a single sensing head A sensor apparatus includes a sensor assembly for maintaining multiple and varying sensor components, wherein the sensor assembly comprises a molded sensor head configured to include a first cavity and a second cavity. A first sensor of a first sensor type can be lo... | 11/13/2007 |
| 7295003 | Non-destructive testing system and method utilizing a magnetic field to identify defects in a layer of a laminated material Techniques for detecting defects in the proximity of a hole of a laminate structure include inserting a generally cylindrical body portion into a hole such that a first coil of wire will reside in a plane substantially parallel to a first electrically conductive lay... | 11/13/2007 |
| 7292029 | Method for detecting substructure A method for detecting substructure includes the steps of: nondestructively scanning an assembly using a substructure scanning system including a precision motion carriage and a nondestructive scanning sensor, positioning the assembly under the substructure scanning... | 11/06/2007 |
| 7288935 | System, method, and apparatus for dynamic electrical testing of workpieces by multiplexing test sites with shared electronics A dynamic electrical tester (DET) for testing head gimbal assemblies (HGA) is disclosed. The DET simulates disk drive operation while significantly reducing tester capital investment. Multiple HGAs are tested simultaneously using modular spin stands with shared elec... | 10/30/2007 |
| 7275442 | Method for ultrasonic inspection of generator field teeth A method for ultrasonically inspecting a generator field tooth for the detection, characterization and/or sizing of cracks thereat is disclosed. An electromagnetic acoustic transducer (EMAT) productive of a test signal having a defined angle of refraction with respe... | 10/02/2007 |
| 7275441 | Method for ultrasonic inspection of generator field teeth A method for ultrasonically inspecting a generator field tooth for the detection, characterization and/or sizing of cracks thereat is disclosed. A monolithic piezoelectric transducer (MPT) productive of a test signal having a defined angle of refraction with respect... | 10/02/2007 |
| 7274989 | Borehole equipment position detection system It is important to know the precise position of equipment when testing of the BOP, testing the wellhead, flow testing the well, kick control, well circulation and testing of spool trees between the wellhead and the BOP. Accordingly, there is provided a system for de... | 09/25/2007 |
| RE39843 | Apparatus to attach sensors on equipment with rotating shafts An apparatus for attaching sensors to rotating shafts on equipment includes a cup magnet and a housing for receiving the cup magnet. A target rotor is displaced within the housing which rotates when attached to a rotating shaft for the purpose of sensing the shaft r... | 09/18/2007 |
| 7262597 | Hybrid squid microscope with magnetic flux-guide for high resolution magnetic and current imaging by direct magnetic field sensing A scanning microscope for high resolution current imaging by direct magnetic field sensing of a sample maintained in an ambient environment. The scanning microscope uses a magnetic sensor such as a SQUID and a fiber probe magnetically coupled between the SQUID senso... | 08/28/2007 |
| 7235967 | Eddy current testing probe and eddy current testing apparatus An eddy current testing probe has a flexible substrate adapted to face to a surface of a test article, a plurality of coils which are fixed to the flexible substrate and energized one of which is capable of being changed sequentially, a pressing member for pressing ... | 06/26/2007 |
| 7233142 | Planer reader of non-erasable magnetic media and local permeability A planer reader and method of probing the magnetic permeability of a material using a magnetic flux circuit comprises a substrate; a near-circular soft magnetic layer adjacent to the substrate; a gap configured in the soft magnetic layer, wherein the gap creates an ... | 06/19/2007 |
| 7230419 | Rotary position sensor A rotary position sensor measures the relative angular position (within a range of≦180°) of a housing or stator and a rotor. The housing carries a galvanomagnetic sensing element and is adapted for fixation to a relatively fixed portion of a host system. The roto... | 06/12/2007 |
| 7218101 | Eddy current method of inspecting a pressure vessel shell A pressure vessel penetration sidewall adjacent a tube installed in the penetration by a clearance fit is inspected by passing an eddy current probe having a pair of circumferential coils through the tube. Eddy currents are induced in the pressure vessel as the prob... | 05/15/2007 |
| 7212895 | Magnetic sensor A magnetic flux is sensed within a gap at a first location between two portions of a vehicle body/structure and a signal generated responsive thereto controls an element of the vehicle, wherein the magnetic flux is responsive to a disturbance of the vehicle body/str... | 05/01/2007 |
| 7209844 | Magnetic crash sensor A first magnetic field generated by a first coil operatively associated with a first portion of a vehicle interacts with at least one conductive element operatively associated with or at least a part of a second portion of the vehicle so as to generate an eddy curre... | 04/24/2007 |
| 7208943 | Electrical device enclosure A robust, low cost, compact and highly accurate rotary position sensor is disclosed for measuring the relative angular position (within a range ≦180°) of a housing or stator and a rotor. The housing carries a galvanomagnetic sensing element and is adapted for fix... | 04/24/2007 |
| 7196512 | Magnetic head tester The magnetic head tester of the present invention drives a medium for rotation to float a slider from the medium so as to test a magnetic head for its characteristics, and the tester includes a holder removably holding the slider opposed to the surface of the medium... | 03/27/2007 |
| 7190162 | Methods and apparatus for inspecting a component A method for inspecting a gas turbine engine rotor disk, wherein the rotor disk includes a plurality of dovetail slots, includes providing a probe assembly including an eddy current probe and a probe fixture, wherein the eddy current probe includes a body portion an... | 03/13/2007 |
| 7154699 | High bandwidth large stroke spin-stand A high bandwidth, large stroke spin-stand for testing components of a disc drive includes a coarse positioning stage and a rotary micropositioning stage. The spin-stand is capable of positioning a transducer head relative to the data storage disc based on one or bot... | 12/26/2006 |
| 7145330 | Scanning magnetic microscope having improved magnetic sensor A scanning magnetic microscope SMM (20) includes a sensor (10) for sensing a magnetic field generated by a specimen (78), the sensor including one of a MTJ, a GMR, or an EHE sensor; translation apparatus (22A–C, 52) for translati... | 12/05/2006 |
| 7135861 | Movable stage, XY stage, head carriage and tester of magnetic head or magnetic disk Pressing means is provided to press a movable base to a surface of a reference base to make the movable base in contact with the surface of the reference base to thereby lock-down the movable base on the surface of the reference base. The movable base is moved while... | 11/14/2006 |
| 7131346 | Spin stand testing system with fine positioner for head stack assembly Head stack fixtures for securing head stack assemblies to spin stand testing systems, and spin stand testing systems incorporating such fixtures, are disclosed. Exemplary head stack fixtures comprise a base supporting a piezoelectric actuator. The base includes an a... | 11/07/2006 |
| 7129702 | XY stage, head carriage and tester of magnetic head or magnetic disk An XY stage includes a movable frame having a rectangular space inside thereof and movable on a reference base along one of X and Y axes, a first drive source provided in the reference base for moving the movable frame, a rectangular movable base mounted in the rect... | 10/31/2006 |
| 7113874 | Magnetic crash sensing method A signal generated responsive to a magnetic field in a magnetic circuit is decomposed into first and second filtered signals, wherein, at at least one first frequency, a magnitude of a component of the first filtered signal is greater than that of the second filtere... | 09/26/2006 |
| 7109704 | Flexible shaft with a helically wound data cable supporting a smooth outer sleeve for eddy current probe A flexible shaft of nonrigid components for use in pushing an eddy current probe through small diameter pipe bends includes a thin-walled flexible outer sleeve enclosing a data cable helically coiled around a central inner core, typically of braided wire. The inner ... | 09/19/2006 |
| 7099008 | Alignment adjuster of probe, measuring instrument and alignment adjusting method of probe A probe alignment adjuster (10) for adjusting an angle of a probe (22) for measuring a configuration of a workpiece has an angle adjuster (21) capable of adjusting the angle of the probe so that the angle aligns with a reference axis line. Since... | 08/29/2006 |
| 7089573 | Information recording/reading apparatus An information recording and/or reading apparatus has a base plate, a spindle motor for rotating a disk by the output shaft perpendicular to the base plate, a rotary alignment control device for determining the rotation position of a recording/reading head of a head... | 08/08/2006 |
| RE39206 | Absolute property measurement with air calibration An instrument and method for providing accurate and reproducible measurement of absolute properties of a material under test without using conductivity or crack calibration standards. The instrument has a sensor designed to minimize unmodeled parasitic effects. To a... | 07/25/2006 |
| 7075296 | Inspection carriage for turbine blades An inspection carriage provides for remote inspection of the Z-shroud and snubber regions of the blades of a steam turbine, while the blades remain in the turbine. The carriage includes a non-destructive inspection probe such as a meandering wave magnetometer probe ... | 07/11/2006 |
| 7068029 | Eddy current inspection probe for inspecting multiple portions of a turbine blade having different geometric surfaces An eddy current inspection probe provides multiple interchangeable configurations for enabling an inspector to reach most or all portions of most or all turbine blades within a combustion turbine by inserting the probe through an inspection port, without disassembli... | 06/27/2006 |
| 7061235 | Magnetic head and disk X-Y test assembly with optimized arrangement for skew angle A magnetic head and disk tester comprises a base, a spindle for rotationally supporting a magnetic disk, a carriage for supporting a magnetic head support which carries a magnetic head with a magnetic read/write element, and a dual-stage positioning system that move... | 06/13/2006 |
| 7038878 | Micromover configured to move a magnetic storage medium in perpendicular directions in a plane A storage device comprising a magnetic storage medium mounted in a first plane, a read and write mechanism mounted in a second plane that is parallel to the first plane and configured to write information to the magnetic storage medium, and a micromover configured t... | 05/02/2006 |
