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Class Information
Number: 324/243
Name: Electricity: measuring and testing > Magnetic > With means to create magnetic field to test material > Induced voltage-type sensor > Plural sensors
Description: Subject matter wherein there are two or more coil sensors of the induced voltage type, the apparatus to indicate the sensing of the magnetic field being connected to two or more of the sensors to note the combined sensing of material-modified magnetic field.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8575923 Method and apparatus for special end area inspection Nov. 5, 2013
8564284 Fault detection for laminated core Oct. 22, 2013
8508220 Fault detection for laminated core Aug. 13, 2013
8415947 Method for stress assessment that removes temperature effects and hysteresis on the material property measurements Apr. 9, 2013
8395380 Device for non-destructive testing of a component by analyzing distribution of a leakage magnetic field Mar. 12, 2013
8378668 Method for non-destructive testing of composite systems Feb. 19, 2013
8319494 Pipeline inspection tool with double spiral EMAT sensor array Nov. 27, 2012
8310229 Intelligent eddy current array probe with embedded firing sequence memory Nov. 13, 2012
8294459 Multiple receiver coil dual mode electromagnetic detector Oct. 23, 2012
8284560 Eddy current sensor with enhanced edge resolution Oct. 9, 2012
8274282 Method for assembling a high-dynamic and high-spatial resolution eddy current testing head Sep. 25, 2012
8274279 Inspection apparatus and method Sep. 25, 2012
8222897 Test circuit with sense elements having associated and unassociated primary windings Jul. 17, 2012
8193806 Object detecting apparatus Jun. 5, 2012
8188732 Arrangement and method for influencing magnetic particles in a region of action using distinguishable magnetization of the two magnetic particles May. 29, 2012
8179132 Method and system for integrating eddy current inspection with a coordinate measuring device May. 15, 2012
8179131 Method and arrangement for influencing and/or detecting magnetic particles in a region of action by rotating magnetic drive vector May. 15, 2012
8129987 Multiple receiver coil dual mode electromagnetic detector Mar. 6, 2012
8125220 Magnetic induction tomography system and method Feb. 28, 2012
7982457 Method and eddy current system for non-contact determination of interface resistance Jul. 19, 2011
7923995 Sensor coil array for magnetic inductance tomography with reduced mutual coil coupling Apr. 12, 2011
7898248 Magnetic screening system and a network managing same Mar. 1, 2011
7876094 Magnetic field characterization of stresses and properties in materials Jan. 25, 2011
7805104 Magnetic element-applied medium, and medium information reading method and device Sep. 28, 2010
7804295 Apparatus and method for detection of defects using flux leakage techniques Sep. 28, 2010
7759931 Device for measuring magnetic impedance Jul. 20, 2010
7701206 Method and a device for non-contact electromagnetic measurement of properties of objects Apr. 20, 2010
7656159 Locating stationary magnetic objects Feb. 2, 2010
7636031 Sensor system including multiple radio frequency identification tags Dec. 22, 2009
7589526 Surface mounted sensor arrays having segmented primary windings Sep. 15, 2009
7576534 System and method to forecast the electrical conductivity of anodes for aluminum production before baking Aug. 18, 2009
7560920 Apparatus and method for eddy-current scanning of a surface to detect cracks and other defects Jul. 14, 2009
7550969 Security screening and inspection based on broadband electromagnetic holographic imaging Jun. 23, 2009
7545140 Metal object detecting apparatus Jun. 9, 2009
7535216 Incremental displacement transducer and method for determining a displacement of a first object relative to a second object May. 19, 2009
7525308 Magnetic detecting device and material identifying device Apr. 28, 2009
7489128 MRI protector Feb. 10, 2009
7414404 Metal detection apparatus Aug. 19, 2008
7411390 High resolution inductive sensor arrays for UXO Aug. 12, 2008
7408461 Metal detection system and method Aug. 5, 2008
7358721 Eddy current flaw detection sensor and method Apr. 15, 2008
7356421 Precise location of buried metallic pipes and cables in the presence of signal distortion Apr. 8, 2008
7319321 Magnetic screening system Jan. 15, 2008
7242186 Device for testing a test specimen for surface faults by magnetization means and by means of induction probes as measurement sensors Jul. 10, 2007
7235967 Eddy current testing probe and eddy current testing apparatus Jun. 26, 2007
7173416 Measurement probe and authentication device comprising the same Feb. 6, 2007
7116248 Vehicle detector system with synchronized operation Oct. 3, 2006
7109887 Vehicle detector system with automatic loop checking Sep. 19, 2006
RE39206 Absolute property measurement with air calibration Jul. 25, 2006
7071685 Induction sensor using printed circuit Jul. 4, 2006

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