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Class 324/232 - Plural magnetic fields in material


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter which includes means to create two or more
No. of patents: 316
Last issue date: 06/01/2010


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NumberTitleIssue Date
7728585Systems for measuring magnetostriction in magnetoresistive elements
A system for use when measuring a magnetostriction value of a magnetoresistive element according to one embodiment includes a mechanism for applying a first magnetic field about parallel to a substrate having one or more magnetoresistive elements, and for applying a...
06/01/2010
7486068Rotating head for nondestructive tests
A rotating head for a device for the nondestructive testing of metallic test specimens has probe carriers, stray flux or eddy current sensors, a coupling ring and elastic coupling elements. In this way, tandem-like, roughly forced coupling of the pivoting motions of...
02/03/2009
7471082Systems for measuring magnetostriction in magnetoresistive elements
A system for use when measuring a magnetostriction value of a magnetoresistive element according to one embodiment includes a mechanism for applying a first magnetic field about parallel to a substrate having one or more magnetoresistive elements, and for applying a...
12/30/2008
7423423Method for quantitatively determining the width of a soft zone area of a partially hardened workpiece
Disclosed is a method for quantitatively determining the width of a soft zone area of a partially hardened metallic workpiece, which has at least one hardened and one unhardened area, by means of at least one multifrequency eddy current sensor. A single workpiece be...
09/09/2008
7375513Methods for measuring magnetostriction in magnetoresistive elements
A method for measuring a magnetostriction value of a magnetoresistive element according to one embodiment includes placing a substrate carrying one or more magnetoresistive elements on a fixture; applying a first magnetic field about parallel to the substrate; apply...
05/20/2008
7355409Systems and methods useful for detecting presence and / or location of various materials
The present invention provides systems and methods which can be employed to locate or detect presence of various materials, including nonferrous metals. These systems include new and useful sensors, circuits, systems and devices which power and/or interoperate with ...
04/08/2008
7339450Inductive miniature component, especially antenna
Disclosed is an inductive miniature structural element, particularly an antenna. Said structural element comprises a winding member (1) which is embodied as a flat component and on which three coil windings (2X, 2Y, 2Z) are mounted in suc...
03/04/2008
7322117System and method for compensating for motor magnetic disturbance of a compass measurement
A method for correcting a vehicle compass measurement for an interfering magnetic field generated by a vehicle accessory, where the interfering magnetic field has an intensity sufficient to cause a compass measurement error, includes monitoring the operation of the ...
01/29/2008
7320249Magnetically attracted inspecting apparatus and method using a fluid bearing
An apparatus and method for inspecting a structure are provided which include probes with sensing elements and are disposed proximate opposite surfaces of a structure, where only one of the probes need be driven. A tracking probe may be magnetically coupled to a dri...
01/22/2008
7313959Magnetically attracted apparatus, system, and method for remote bondline thickness measurement
Apparatus, systems, and methods for inspecting a structure are provided which use magnetically coupled probes disposed proximate opposite surfaces of a structure to locate, move, position, and hold a pulse echo ultrasonic transducer of one of the probes for non-dest...
01/01/2008
7301335Apparatus and method for eddy-current magnetic scanning a surface to detect sub-surface cracks around a boundary
An RFEC excitation unit and sensor apparatus and method that facilitate detection of cracks or other anomalies within or under a surface and immediately next to an expected structure (such as a rivet) that would otherwise cause a signal change preventing detection o...
11/27/2007
7301324Recording medium detecting system
A recording medium detecting system includes a magnetic field-generating unit that generates an alternating magnetic field in a predetermined particular region, a detecting unit provided close to the particular region, that detects a change in magnetic flux density ...
11/27/2007
7298139Systems and methods for measuring magnetostriction in magnetoresistive elements
A system for directly measuring a magnetostriction value of a magnetoresistive element includes a fixture for receiving a substrate carrying one or more magnetoresistive elements. A magnet assembly applies a first magnetic field parallel to the substrate, and a magn...
11/20/2007
7295003Non-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
7283826Contactless magnetic sensor for determination of the linear position of a moving body
A magnetic sensor for determining the position of a cellular phone in linear movement along an axis of translation, the sensor including a measuring cell fitted to a magnetic circuit and capable of measuring the variations in the value of the magnetic induction flux...
10/16/2007
7268541Detecting failures of flexible multistrand steel structures
A flexible elongate structure, such as a flexible riser (10), comprising at least one layer (20) of steel wires near the surface which extend at least partly along the length of the structure, can be monitored by inducing a small, alternating magnetic ...
09/11/2007
7259555Method for determining the hardening depth of steel
This publication discloses a method and arrangement for determining the hardening depth of steel or other ferromagnetic substances without breaking the object being measured. According to the invention, a varying magnetic field, which causes magnetic Barkhausen nois...
08/21/2007
7252142Annular isolators for expandable tubulars in wellbores
The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the...
08/07/2007
7239134Screening method and apparatus
A method and an apparatus are disclosed, to screen patients or other areas for ferromagnetic objects, particularly for use intra-operatively in an operating room. The device comprises at least one magnetic field source, at least one magnetic gradiometer, and the ass...
07/03/2007
7227354Magnetic material amount detecting apparatus
A magnetic material amount detecting apparatus includes primary winding and secondary winding which are wound on a core having a reading section to which a to-be-detected medium is set close. A current is supplied to the primary winding and an output signal from the...
06/05/2007
7218102Pipeline inspection apparatus and method
A apparatus for pipeline integrity monitoring comprising a magnetically permeable backing bar and at least three magnets comprising a relatively medium-strength magnet positioned at one end of the backing bar, a relatively low-strength magnet positioned at the other...
05/15/2007
7216706Annular isolators for tubulars in wellbores
The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming mate...
05/15/2007
7212895Magnetic 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
7209844Magnetic 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
7208971Manual probe carriage system and method of using the same
A probe support carriage for use during probing an electrical device includes a body, means for supporting and positioning the body, a plurality of flux sensors and a position sensor. The body has a first end and a second end. The plurality of flux sensors are opera...
04/24/2007
7208946Magnetic material detecting apparatus
A pair of cores are arranged such that first end portions thereof face to each other with a gap via a conveying path through which a medium to be detected passes. Coils wound at the first end portions of the cores, respectively, are connected in series to each other...
04/24/2007
7193524Systems and methods for a portable walk-through metal detector
A portable walk through metal detector with interchangeable sensor panels and other structural members that can be quickly assembled, or disassembled and transported. The device includes two structural base members to anchor the archway, multiple sensor panels with ...
03/20/2007
7171314Methods and systems for analyzing structural test data
Systems and methods for analyzing structural test data are disclosed. In one embodiment, a method includes applying a sequence of loads to a test article, receiving raw test data indicative of the applied loads from at least one sensor operatively associated with th...
01/30/2007
7170286Magnetic material detecting device
A magnetic material detecting device which detects a magnetic material by applying a magnetic field to the magnetic material and detecting a magnetic field generated from the magnetic material by the applied magnetic field, and which includes a magnetizing coil whic...
01/30/2007
7161350Method for material property monitoring with perforated, surface mounted sensors
Material condition monitoring may be performed by electromagnetic sensors and sensor arrays mounted to the material surface. The sensors typically have a periodic winding or electrode structure that creates a periodic sensing field when driven by an electrical signa...
01/09/2007
7155369Autonomous non-destructive inspection
Autonomous non-destructive inspection equipment provides automatic and/or continuous inspection and evaluation of a material under inspection. The inspection equipment comprises at least one detection sensor and at least one detection sensor interface for a computer...
12/26/2006
7145329Manually operated working tool
The present invention relates to a manually operated working tool such as an internal combustion operated setting tool for driving in fastening elements such as nails, bolts, pins into a magnetizable substrate, having an inductive metal detector assembly (20)...
12/05/2006
7139028Image pickup apparatus
There is provided an image pickup apparatus in which a plurality of pixel areas in which pixels each having a photoelectric conversion unit are arranged two-dimensionally, are arranged on a single semiconductor chip to be adjacent to each other through a predetermin...
11/21/2006
7138027Skateboard and method of manufacturing
A laminated deck for a skateboard comprises a plurality of layers of graphite cloth alternating with a plurality of layers of a laminating resin. The deck is formed after treating the layers of material for between one-half hour to six hours under a vacuum at a temp...
11/21/2006
7123016Systems and methods useful for detecting presence and / or location of various materials
The present invention provides systems and methods which can be employed to locate or detect presence of various materials, including nonferrous metals. These systems include new and useful sensors, circuits, systems and devices which power and/or interoperate with ...
10/17/2006
7123030Method and apparatus for detecting elevator rope degradation using electrical resistance
A method and system for detecting or measuring defects in an elevator rope having electrically conductive tension members, whereby measured electrical resistance in the tension members is indicative of defects. ...
10/17/2006
7112960Eddy current system for in-situ profile measurement
An eddy current monitoring system may include an elongated core. One or more coils may be coupled with the elongated core for producing an oscillating magnetic field that may couple with one or more conductive regions on a wafer. The core may be translated relative ...
09/26/2006
7113874Magnetic 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
7098655Eddy-current sensor with planar meander exciting coil and spin valve magnetoresistive element for nondestructive testing
An eddy-current sensor for nondestructive testing according to the present invention includes a planar exciting coil having a pair of current lines in parallel with each other through which exciting currents flow in opposite directions to each other during the testi...
08/29/2006
7091717Squid sensor using auxiliary sensor
A SQUID (Superconducting QUantum Interference Device) sensor using an auxiliary sensor, includes a SQUID sensing unit having a SQUID and a first feedback coil for creating a magnetic field at a periphery of the SQUID; an auxiliary sensor having a lower magnetic sens...
08/15/2006
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