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8878552 End-of-line capacitor for measuring wiring impedance of emergency notification circuits  
A system includes a capacitor, a plurality of notification devices connected in parallel with the capacitor, and a controller. The controller is capable of determining capacitance of the capacitor...
8797023 Coercive force specifying apparatus  
Provided is a coercive-force specifying apparatus capable of creating a demagnetization curve for each divisional area of a coercive-force distributed magnet without breaking the coercive-force...
8779778 Proximity switch  
Disclosed is a proximity switch provided with an actuator unit and a sensor unit. The sensor unit is provided with an antenna coil, a transmitting circuit which transmits electromagnetic waves at...
8547086 Coercivity performance determination device for coercivity distribution magnet  
There is provided a coercivity performance determination device for a coercivity distribution magnet that is capable of determining, in a short period of time, with precision, and at as low a...
8542006 Movement detection circuit of solenoid shear seal valve on subsea pressure control system and method of detecting movement of solenoid actuator  
A solenoid current monitoring circuit of a solenoid actuator includes a solenoid drive board configured to receive a control signal, a sensing resistor configured to detect a current signal of a...
8493062 Method for determining coercivity of coercivity distribution magnet  
According to the present invention, a method for determining coercivity of a coercivity distribution magnet, whereby coercivity of each portion in the coercivity distribution magnet can be...
8483800 Surgical navigation enabled imaging table environment  
A system for integrating radiolucent tracking sensors in a medical table, table mat, or surgical drape of a surgical navigation system, allowing the surgical navigation system to be less obtrusive...
8450997 Electromagnetic position and orientation sensing system  
Magnetic tracking systems and methods for determining the position and orientation of a remote object. A magnetic tracking system includes a stationary transmitter for establishing a reference...
8432160 Method for estimating the weight of the contents of a household appliance  
A method for estimating the value of the weight of the contents of the oscillating assembly of an electronically controlled household appliance is provided. The oscillating assembly is connected...
8198889 Magnetic sensor for an elevating motor  
A magnetic sensor for an elevating motor, and more particularly to a magnetic sensor whose magnetic induction elements are sealed within a magnetically non-permeable minor sleeve. Meanwhile, a...
8148976 Method and arrangement for the contactless inspection of moving electrically conductive substances  
The invention relates to a method and arrangement for the contactless determination of conductivity-influencing properties and their spatial distribution over the entire cross section of an...
8053244 Magnetic oscillator based biosensor  
A biosensor is described. The biosensor includes a fixed multilayer stack providing a magnetization oscillation, a voltage source electrically coupled to the fixed multilayer stack, and a binding...
7876186 Electronically actuated apparatus  
An electromagnetic actuator having an annular pole piece and an annular armature with surfaces formed thereon through which a magnetic flux passes. The armature is axially movable relative to the...
7876095 Apparatus for determination of an interface of a slag layer  
An apparatus is provided for determination of at least one interface of a slag layer on top of a molten metal. The apparatus has a carrier tube and a measuring head arranged on one end of the...
7777483 Method and apparatus for measuring a thickness of a layer of a wafer  
A method and apparatus are provided for measuring the thickness of a test object. The apparatus includes an eddy current sensor having first and second sensor heads. The sensor heads are...
7764154 Electronically actuated apparatus using solenoid actuator with integrated sensor  
An electromagnetic actuator having an annular pole piece and an annular armature with surfaces formed thereon through which a magnetic flux passes. The armature is axially movable relative to the...
7714572 Method of detecting characteristics of films using eddy current  
A method of detecting a characteristic (such as thickness) of first and second films formed on a substrate includes supplying a sensor coil with a first alternating current having a first...
7626382 Rotation speed detecting apparatus and automatic transmission controller having the apparatus  
An input shaft rotating speed detector detects an input shaft rotating speed Nin of an automatic transmission based on output signals from a resolver within a predetermined time period δt1. An...
7619408 Spatially resolved determination of magnetic particle anisotropy in an area of examination  
Determination of at least one of physical, chemical and biological properties and parameters within an area of examination of an object of examination by introducing magnetic particles in at least...
7602271 Electronically actuated apparatus using solenoid actuator with integrated sensor  
An electromagnetic actuator assembly that includes an annular frame, a coil assembly, an annular armature, a plunger and a sensor. The coil assembly is coupled to the frame and includes an annular...
7426867 Electromagnetic acoustic transducers for use in ultrasound inspection systems  
An ultrasound system for inspecting an object is provided. The ultrasound system includes an electromagnetic acoustic transducer (EMAT) and a pulser-receiver system. The EMAT is configured to...
7355394 Apparatus and method of dynamically measuring thickness of a layer of a substrate  
A method and apparatus are provided for measuring the thickness of a test object. The apparatus includes an eddy current sensor having first and second sensor heads. The sensor heads are...
7161351 Hidden feature characterization using a database of sensor responses  
Quasistatic sensor responses may be converted into multiple model parameters to characterize hidden properties of a material. Methods of conversion use databases of responses and, in some cases,...
7121300 Device for measuring the lift of poppet valves  
A device for measuring the height of lift of poppet valves, in particular for poppet valves installed in internal combustion engines, with the help of inductive pickups, including a coil in a...
7112961 Method and apparatus for dynamically measuring the thickness of an object  
A method and apparatus are provided for measuring the thickness of a test object. The apparatus includes an eddy current sensor having first and second sensor heads. The sensor heads are...
7106055 Fabrication of samples having predetermined material conditions  
Fabrication of samples having material conditions or damage representative of actual components inspected by nondestructive testing involves sensors placed near or mounted on the material surface,...
7046001 Frequency measuring device, polishing device using the same and eddy current sensor  
A frequency measuring device capable of accurately detecting an end point of polishing a semiconductor wafer by obtaining a frequency measurement result highly accurately in a short period of...
6987628 Method and apparatus for high fly write detection using stored amplitude values  
A method and apparatus for detecting a high flying condition of a transducer head in a computer disk drive is provided. The method and apparatus allow the detection of high fly write events that...
6927570 Method and apparatus for making measurements of accumulations of magnetically susceptible particles combined with analytes  
An apparatus is provided for quantitatively measuring samples whose amount or other characteristic quality is to be determined. The samples are arranged in a predefined pattern and are excited in...
6861836 Bearing overtemperature indicator  
A non-ferrous component comprising a thermally-affected adhesive applied to a surface of the component, and at least one ferrous metal wire attached to the surface of the component by the...
6844725 Electric and magnetic field detection device and electric and magnetic field measurement apparatus  
The intensity of electric and magnetic component is measured at a high-speed without reducing spatial resolution. An electric and magnetic field detection device has an electric field detection...
6825655 Method and arrangement for detecting changes of a magnetic response in magnetic particles  
A method for detecting changes of magnetic response of at least one magnetic particle provided with a external layer in a carrier fluid, comprising measuring the characteristic rotation time of...
6822442 Sensor arrangement for detecting properties of a target  
A sensor arrangement with a first sensor (1) which comprises a measuring coil (2) that operates by the eddy current principle, and which detects the distance from a target (6), and a second sensor...
6815117 Method for determining a current density distribution in a fuel cell stack  
A method for detecting a current density distribution in a fuel cell stack by detecting the magnetic field, which surrounds the fuel cell stack and which is caused by a current flow in the fuel...
6788050 System, method and apparatus for thin-film substrate signal separation using eddy current  
A system and method for determining a component of an eddy current sensor (ECS) signal attributable to a substrate includes placing a substrate in a first position relative to an ECS at a first...
6777931 Method of displaying signal obtained by measuring probe and device therefor  
The testing results, etc. of surface flaws such as cracks formed in or just below a surface of a body to be detected are displayed using colors within different color regions in the color space...
6772134 Control means for a horizontal boring tool  
Control apparatus for a horizontal boring tool is described which drives a boring lance via boring rods. The tool includes an input interface for receiving actual values of controlled variables of...
6745136 Pipe inspection systems and methods  
A method for inspecting pipe, the method, in at least certain aspects, including detecting an inspection parameter in at least a first part of a pipe, the pipe having a length, a hollow body, an...
6741074 Method and apparatus for separating electrical runout from mechanical runout  
A method for separating electrical runout from mechanical runout includes positioning at least one position probe against a rotating part, positioning at least one proximity probe adjacent the...
6700370 Apparatus for measuring the thickness of a thin film having eddy current coil sensor  
The thickness of a conductive film formed on a substrate can be measured efficiently at low cost with a film thickness measuring apparatus of the invention, which includes an eddy current coil...
6690156 Physical object location apparatus and method and a graphic display device using the same  
A device for detecting physical objects, each object having a detectable identifier, the objects being disposed in association with a graphic display device, comprising a detector operable to...
6677749 Using variable inductance to indicate roller wear  
This invention relates to the method and apparatus for indicating roller wear in a media handling device. Such structures of this type, generally, employ the use of variable inductance to...
6611141 Hybrid 3-D probe tracked by multiple sensors  
This invention is a system that tracks the 3-dimensional position and orientation of one or more bodies (20) in a volume by a light based as well as at least one non-light based mensuration...
6611142 Apparatus and method of measuring the multi-dimensional magnetic field distribution of a magnetic sample in real-time  
An apparatus for measuring the magnetic field distribution of a magnetic sample includes a magnetic field sensor arrangement having three, orthogonally-disposed, Hall sensors for sensing the...
6603306 Proximity switch, a target, a system of such proximity switches and targets, and a method of determining the presence of a target by a proximity switch  
A proximity switch for detecting a target in proximity with the proximity switch as a wireless transmitter for transmitting a first pulsed signal having a first carrier frequency to the target....
6597163 Contamination resistant probe attachment device  
A contamination resistant probe attachment device attaches over an opening in a top cover of a disc drive to couple a testing probe to the interior of the disc drive. The attachment device has a...
6593738 Method and apparatus for measuring thickness of conductive films with the use of inductive and capacitive sensors  
The invention relates to an apparatus for measuring thickness and deviations from the thickness of thin conductive coatings on various substrates, e.g., metal coating films in semiconductor wafer...
6552530 Super-toroidal electric and magnetic field generator/detector, and sample analyser and treatment apparatus using same  
A field generator/detector including at least one super-toroidal conductor and a device to energize the super-toroidal conductor to generate varying electric and magnetic fields. Where conductor...
6545468 Calibration method for magnetically enhanced reactive ion etcher  
A method of calibrating the magnetic coils of a magnetically enhanced reactive ion etcher includes taking magnetic field measurements outside of a closed plasma chamber and correlating such...
6538433 Method and apparatus for non-contact measuring of metal bed parameters  
In a method and device for measuring at least one parameter of a metal bed, measuring is obtained by a magnetic field being generated from one side of the metal bed so that eddy currents are...