| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324219000 | Magnetic sensor within material | 34 |
| 20130076347 | CRACK DETERMINING DEVICE AND SEMICONDUCTOR DEVICE - There are provided a crack determining device capable of determining, in real time and with precision, the fact that a crack has occurred in a solder layer, and a semiconductor device comprising same. A crack determining device of the present invention is a crack determining device that determines whether or not a crack has occurred in a solder layer with respect to a semiconductor device in which at least a semiconductor element is connected to a connectee member via the solder layer, the crack determining device comprising a generation part that generates a magnetic field and that is fixed to a member forming the semiconductor device, and a detection part that detects a magnitude of a magnetic field and that is disposed within the solder layer, wherein the magnetic field generated at the generation part is detected at the detection part, and it is determined that a crack has occurred in the solder layer if this magnitude of the magnetic field varies from a magnitude of the magnetic field detected before the crack occurred. | 03-28-2013 |
| 20110127998 | GMR SENSOR WITHIN MOLDED MAGNETIC MATERIAL EMPLOYING NON-MAGNETIC SPACER - An integrated circuit includes a leadframe, and a die having a top surface, a bottom surface, and a plurality of perimeter sides and including at least one magnetic field sensor element disposed proximate to the top surface, wherein the bottom surface is bonded to the leadframe. A molded magnetic material encapsulates the die and at least a portion of the leadframe, and provides a magnetic field substantially perpendicular to the top surface of the die. A non-magnetic material is disposed between the die and the molded magnetic material at least along perimeter sides of the die intersecting a lateral magnetic field component which is parallel to the top surface of the die. | 06-02-2011 |
| 20080278151 | SYSTEM AND METHODS FOR INSPECTING INTERNAL CRACKS - A method for inspecting an internal cavity in a part is provided. The method includes inserting a probe into the internal cavity. The method also includes controlling movement of the probe using a defined scan path to scan the probe over a region of interest in the internal cavity. The method also includes applying multiple multifrequency excitation signals to the probe to generate a number of multifrequency response signals. The multifrequency excitation signals are applied at multiple positions within the internal cavity. The method further includes performing a multifrequency phase analysis on the multifrequency response signals to inspect the internal cavity. | 11-13-2008 |
| 20110234212 | MAGNETIC FLUX LEAKAGE INSPECTION DEVICE - Disclosed are a method and an improvement to the existing conventional magnetic flux leakage inspection device that employ some fixed magnets that are fixed inside the magnet yoke and some movably adjustable magnets, allowing their dipole orientation to be adjusted between 0° and 180° relative to that of the fixed magnets. A lever and gear set connected to the adjustable magnets can be operated to achieve desired level of magnetic strength of the device, including turning off the whole magnetic field, by causing the fields of the fixed and adjustable magnets to cancel each other. The disclosed adjustable yoke can also be used in other NDT/NDI applications where providing an adjustable magnetic strength is desirable. | 09-29-2011 |
| 324220000 | Sensor supported, positioned, or moved within pipe | 30 |
| 20120176127 | APPARATUS FOR PIPELINE INSPECTION - A sensor assembly for pipeline inspection is provided. The sensor assembly comprises a sensor arm configured to mount the sensor assembly to a pipeline inspection tool and a sensor carrier configured to support a magnetic flux leakage sensor, the sensor carrier being pivotably coupled to the sensor arm by a pivot pin, wherein the sensor arm comprises a first end configured to connect the sensor assembly to a pipeline inspection tool, a distal end adjacent to which the sensor carrier is secured, and multiple elongate sections which cooperate with one another to capture the pivot pin at the distal end of the sensor arm and thereby secure the sensor carrier for movement with the sensor arm. | 07-12-2012 |
| 20100117634 | Wide Field ID-OD Discriminator - A Wide Field ID-OD Discriminator for inspection of ferromagnetic pipe from the interior of the pipe. The embodiment concentrates the flux field from the full field of coverage to the sensors. | 05-13-2010 |
| 20090045808 | SYSTEM FOR TESTING CONCEALED CONDUITS - A system for testing concealed ducts including a pull cable and a transmitter, the transmitter including a transmission means for emitting radiation disposed at one end of the pull cable and at least one electric wire disposed inside the pull cable, wherein the electric wire or wires enables electrical connection between the transmitter and the transmission means, and a receiver for receiving signals from the transmission means and for indicating strength of the received signals. The scope of the invention includes methods of finding blockage within a conduit pipe and finding the path of a conduit pipe, built into a partition, by inserting a pull cable into a conduit pipe and detecting the location of the front end of the pull cable. | 02-19-2009 |
| 20120293168 | MULTI DIRECTIONAL ELECTROMAGNETIC YOKE FOR INSPECTION OF BORES - A non-destructive inspection system that has particular application for inspecting a bore in a valve for defects. The system includes an inspection yoke having a ferromagnetic core, where a first coil is wound around the core in one direction and a second coil is wound around the core in an orthogonal direction so that orthogonal electromagnetic fields can be generated within the bore. A controller provides a current flow through the coils to generate the electromagnetic fields to detect defects in the bore. | 11-22-2012 |
| 20090206830 | SENSOR FOR DETECTING SURFACE DEFECTS OF METAL TUBE USING EDDY CURRENT METHOD - Disclosed herein is a sensor for detecting surface defects of a metal tube, which can solve a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. | 08-20-2009 |
| 20100117635 | SPIRAL MAGNETIC FIELD APPARATUS AND METHOD FOR PIPELINE INSPECTION - A system and method are disclosed for inspecting the wall of a pipeline while traveling therethrough. The system may comprise a portion of pipe comprising a pipe wall forming a cylindrical tube defining a circumferential direction and an axial direction. The system may further include an in-line inspection tool positioned within the portion of pipe. The in-line inspection tool may include a frame extending in the axial direction and at least one magnet connected to the frame and positioned to generate a magnetic field. The magnetic field may be orientated obliquely with respect to the circumferential and axial directions of the pipeline. The inspection tool may include a transmitter connected to the frame to generate an inspection signal within the magnetic field. | 05-13-2010 |
| 20100283454 | MAGNETISING ASSEMBLY - A magnetiser for a pipeline inspection tool. The magnetiser comprises a ferromagnetic base member, a pair of driving magnets mounted at spatially separate locations on the base member and a flux enhancing magnet mounted on the base member adjacent to one or both of the driving magnets. The directions of magnetisation of the pair of driving magnets extend in opposite senses to each other, towards and away from the base member respectively to create a magnetic circuit that includes a flux path between the driving magnets which passes through the base member. The flux enhancing magnet has a direction of magnetisation substantially aligned with the direction of magnetic flux on the flux path, the flux enhancing magnet being magnetically coupled to the adjacent driving magnets to drive flux around the magnetic circuit and thereby enhance the magnitude of a magnetic field exhibited by the magnetic circuit outside the magnetiser. | 11-11-2010 |
| 20100295543 | Magnetometer-based Detector for Objects in a Pipeline - A system and method for detecting the passage of an object in a pipeline includes a non-intrusive detection device that houses one or more shielded magnetometer sensors and a microcontroller with adaptive thresholding detection means. The adaptive thresholding detection means removes outlier data from the magnetic flux data stream and then passes the outlier-free data stream through four low pass filters. A smoothed magnitude of the data stream is compared to detection limits and, if a passage event has occurred, a recent detection is indicated, a counter of a display unit is incremented, a time of passage is recorded, and both statistics are displayed on the display unit. Because a single object may produce multiple magnetic fields, the detector may be locked-out for a predetermined period of time after the passage event to prevent a second detection of the same object as it passes the detection device. | 11-25-2010 |
| 20100308809 | PIPELINE GEOMETRY SENSOR - A sensor module ( | 12-09-2010 |
| 20100308810 | In-Line Pipe Inspection Tool - An in-line pipe inspection tool has one or more inspection platforms ( | 12-09-2010 |
| 20110241660 | THE DETECTION OF DEPOSITS COMPRISING AT LEAST ONE FERROMAGNETIC MATERIAL ON OR CLOSE TO THE EXTERNAL WALL OF A TUBE - The present invention relates to a method for the detection of fouling or clogging deposits comprising at least one ferromagnetic material, such as nickel, magnetite or similar material, on or close to the external wall of a tube, characterized in that it comprises at least the following steps: a magnetized source is positioned inside the tube and immobilized heightwise therein; the source is rotated about itself by being driven by means of an electric motor; and the intensity of the current drawn by said electric motor during this rotational movement is measured and the curve obtained is analysed in order to detect, and where appropriate evaluate, the clogging. | 10-06-2011 |
| 20110068782 | COMPUTER-IMPLEMENTED METHOD TO SCREEN FOR LONGITUDINAL-SEAM ANOMALIES - Embodiments of the present invention provide computer-implemented methods to detect crack-like features in pipeline welds using magnetic flux leakage data and pattern recognition. A screening process, for example, does not affect or change how survey data is recorded in survey tools; only how it is analyzed after the survey data is completed. Embodiments of the present invention can be used to screen for very narrow axial anomalies in the pipeline welds, and may also be used to predict the length of such anomalies. Embodiments of the present invention also produce a listing of the anomalies based on their relative signal characteristics. | 03-24-2011 |
| 20110062951 | System to Screen for Longitudinal-Seam Anomalies - Embodiments of the present invention provide systems to detect crack-like features in pipeline welds using magnetic flux leakage data and pattern recognition. A screening process, for example, does not affect or change how survey data is recorded in survey tools; only how it is analyzed after the survey data is completed. Embodiments of the present invention can be used to screen for very narrow axial anomalies in the pipeline welds, and may also be used to predict the length of such anomalies. Embodiments of the present invention also produce a listing of the anomalies based on their relative signal characteristics. | 03-17-2011 |
| 20110163740 | BLANKET PROBE - A blanket probe for detecting the thickness of a wall having a non-planar surface has a probe portion comprising a planar substrate that is flexible in one or two dimensions, an array of detectors mounted on the substrate and at least one interface for communicating signals to and from each detector. | 07-07-2011 |
| 20110095752 | PIPELINE MONITORING APPARATUS AND METHOD - A pipeline inspection vehicle comprises a main body ( | 04-28-2011 |
| 20100060273 | SENSOR SYSTEM FOR AN IN-LINE INSPECTION TOOL - In an in-line pipe inspection tool, sensors for inspecting the pipe are mounted on sensor blocks moveable relative to the body of the tool. However, when the sensor blocks move radially to conform to different pipe diameters, the circumferential distances between the sensors changes. To ameliorate the effect of this, the sensor blocks have a shape such that one axial edge of each sensor block circumferentially overlaps the opposite edge of an adjacent sensor block. With such an arrangement, when the sensor block are operating at minimum diameter, part of one sensor block will overlap an adjacent block, in the circumferential direction. As the diameter of the pipeline in which the pig is used increases, the degree of overlap will reduce, and may even reduce to zero, but there will still be no overall axial gaps between the sensor blocks. Thus, by suitable shaping of the sensor blocks the tool can be used with a wide range of pipe diameters. | 03-11-2010 |
| 20100066354 | METALLIC DEBRIS DETECTION SENSOR - The present invention relates to a sensor arrangement. In particular, a sensor for the measurement of magnetically active or ferrous debris, for example, as generated as a result of machine wear. There is provided a sensor ( | 03-18-2010 |
| 20120007594 | LOW ROW STEAM GENERATOR INSPECTION PROBE - An inspection assembly for insertion inspection of an elongate hollow member. The inspection assembly includes a probe head including at least one sensor for sensing a characteristic of the elongate hollow member as the probe head is moved internally within the elongate hollow member. The assembly includes a flexible shaft connected to the probe head and transmitting a motive force to the probe head to move the probe head within the elongate hollow member. The flexible shaft encloses at least one wire operatively connected between the probe head and at least one component external to the elongate hollow member for sensory operation of the at least one sensor. The flexible shaft is at least partially corrugated. | 01-12-2012 |
| 20120013330 | CONDUIT SENSOR DEVICE WITH MAGNETIC SHUNT AND PROCESS FOR MODIFYING A MAGNETIC FIELD - A conduit sensor device includes first and second pairs of permanent magnets. First and second rotor shunts include first and second rotatable magnets and interposed between the first and second pairs of permanent magnets, respectively. A shunt shaft includes a first helical worm gear and a second helical worm gear mounted thereon. The first rotor shunt includes a first rotatable magnet and a first rotor gear locked together. The first helical worm gear meshing with the first rotor gear driving the first rotor gear and the first rotatable magnet. The second rotor shunt includes a second rotatable magnet and a second rotor gear locked together. The second helical worm gear meshes with the second rotor gear driving the second rotor gear and the second rotatable magnet. The surface areas of the first and second pairs of permanent magnets equals the surface area of the first and second rotatable magnets. | 01-19-2012 |
| 20110089937 | EDDY CURRENT INSPECTION PROBE - An eddy current probe for inspecting steam generator tubing, that has radially outwardly biased rollers that function to center the probe and reduce friction as the probe moves along the interior of the steam generator heat exchanger tube walls. The rollers may include a braking system which controls the drag on the rollers and thus the speed of the probe along the tubing. The direction of travel of the rollers is remotely adjustable to control the inspection pattern and the force of the rollers against the interior surface of the tubing can be remotely controlled. | 04-21-2011 |
| 20110181275 | SPIRAL MAGNETIC FIELD APPARATUS AND METHOD FOR PIPELINE INSPECTION - A system and method are disclosed for inspecting the wall of a pipeline while traveling therethrough. The system may comprise a portion of pipe comprising a pipe wall forming a cylindrical tube defining a circumferential direction and an axial direction. The system may further include an in-line inspection tool positioned within the portion of pipe. The in-line inspection tool may include a frame extending in the axial direction and at least one magnet connected to the frame and positioned to generate a magnetic field. The magnetic field may be orientated obliquely with respect to the circumferential and axial directions of the pipeline. The inspection tool may include a transmitter connected to the frame to generate an inspection signal within the magnetic field. | 07-28-2011 |
| 20080204008 | Anomaly Detector for Pipelines - A sensor unit for use in sensing conditions in a pipeline comprises an untethered a ball-shaped surround adapted to roll along the interior surface of a pipeline, and instrument package within the ball-shaped surround. The package contains at least one magnetometer or accelerometer. Preferably, three magnetometers, arranged orthogonally, are present. Other sensors can also be present as required, such as an acoustic sensor to detect leaks and a temperature or chemical sensor. Recording means record the data acquired by the magnetometer(s) or accelerometer and the sensors, and optionally also record a timing trace. | 08-28-2008 |
| 20100327858 | Pipeline Inspection Tool with Double Spiral EMAT Sensor Array - A pipeline inspection tool includes two pole magnets oriented at an oblique angle relative to the central longitudinal axis of the tool body. An array of sensor coil sets is located between opposing edges of the two pole magnets and oriented perpendicular to the central longitudinal axis. Each sensor coil set includes a transmitter coil and two opposing pairs of receiver coils that are gated to receive reflections from the wall of a tubular member. Because the line of sensor coils is rotated relative to the magnetic bias field, the receiver coils are in-line with, and have the same angular orientation as, the transmitter coil. The tool provides improved sensitivity to small defects, substantial decrease in RF pulser power requirements, full circumferential coverage, self-calibration of the transmitted signals, and less interference between transmitter coils caused by acoustic ring around. | 12-30-2010 |
| 20080297148 | DEVICE FOR NON-DESTRUCTIVE EDDY CURRENT INSPECTION OF A HOLE FORMED IN A CONDUCTIVE PART - Using eddy currents to inspect a hole that is possibly not rectilinear and/or of section that is not circular. The inspection device comprises a stick shaped and dimensioned to be capable of being engaged in said hole, at least one arm hinged to a support fastened to one end of the stick, an eddy current sensor being embedded in said arm, and resilient means for urging the arm outwards against the inside surface of the hole. | 12-04-2008 |
| 20120081108 | NONDESTRUCTIVE INSPECTION METHOD FOR A HEAT EXCHANGER EMPLOYING ADAPTIVE NOISE THRESHOLDING - A method of eddy current testing for flaws in a tube is provided that includes passing an eddy current probe through the tube and obtaining eddy current data for a number of positions along the tube, analyzing the eddy current data to generate background noise data for a number of positions along the tube, analyzing the eddy current data to generate extracted data for a number of positions along the tube, and determining whether a flaw of a particular category is present in the tube based on a set of one or more of rules applied to at least a portion of the extracted data, wherein at least one of the rules uses a particular part of the extracted data and employs a threshold that is a function a particular part of the background noise data that is associated with the particular part of the extracted data. | 04-05-2012 |
| 324221000 | Borehole pipe testing | 5 |
| 20090195244 | ELECTROMAGNETIC IMAGING METHOD AND DEVICE - An electromagnetic imaging method for electromagnetically measuring physical parameters of a pipe CJ, CC by means of a plurality of measuring arrangement ZMA, MCMA, MonMa, ImMA comprising a plurality of transmitter coil ZTX, LFTX, DTX and a plurality of receiver coil ZRX | 08-06-2009 |
| 20100045278 | PROBE FOR ANALYSIS OF A COLLECTION OF RODS OR TUBES - The invention concerns a probe for analysis of a collection of rods or tubes comprising an elongated casing which bears, at a first end, at least one first magnetometer and, at a position sufficiently remote from the magnetometer, a permanent magnet, the north-south axis of which is perpendicular to the axis of the rods. | 02-25-2010 |
| 20090167297 | OPTICAL FIBER SYSTEM AND METHOD FOR WELLHOLE SENSING OF FLUID FLOW USING DIFFRACTION EFFECT OF FARADAY CRYSTAL - A system and method for optically determining the rate and/or direction of fluid flow in a conduit within wellholes, using the diffraction effect of Faraday crystals through which continuous light is transmitted within optical fibers. | 07-02-2009 |
| 20110227564 | PROBE FOR ANALYSIS OF A STRING OF RODS OR TUBES IN A WELL - Various embodiments comprise a probe for analysis of a collection of rods or tubes, including an elongated casing which bears, at a first end, at least one first magnetometer and, at a position sufficiently remote from the magnetometer, a permanent magnet, the north-south axis of which may be perpendicular to the axis of the rods. Additional apparatus, systems, and methods are disclosed. | 09-22-2011 |
| 20100156403 | METHOD AND DEVICE FOR DETERMINING THE LOCATION OF THE STICKING POINT OF A ROD MADE OF MAGNETORESTRICTIVE MATERIAL LOCATED IN A WELL - The present invention relates to methods for determining the location of the sticking point Pc of a hollow rod or pipe | 06-24-2010 |
