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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 δt 1. An...
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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...
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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...
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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...
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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 positioned...
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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,...
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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...
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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 positioned...
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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,...
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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 time....
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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...
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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 a...
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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...
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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...
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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 the...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 determine...
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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...
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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...
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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. The...
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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...
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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...
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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...
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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...
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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...
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6528993 |
Magneto-optical microscope magnetometer
A magneto-optical microscope magnetometer capable of simultaneously measuring a hysteresis loop and activation magnetic moment of a submicrometer-scale local area (about 0.3×0.3 μm). An...
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6514704 |
Quality control mechanism and process for a biofluid multi-ejector system
A method and mechanism for ensuring quality control in printed biological assays is provided. A multi-ejector system having a plurality of individual drop ejectors is loaded with a variety of...
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6479991 |
Stage mechanism, exposure apparatus and device manufacturing method in which a coil unit of a driving mechanism is moved substantially in synchronism with a stage
A stage system includes a movable stage, a first driving mechanism, having magnet and a coil unit, for moving the stage along a predetermined direction, the coil unit including a coil and a yoke,...
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6456067 |
Inductive product sensor for a refreshment center
A product sensor system for use in a refreshment center configured to sense a number of metal product containers. The sensor device can comprise a support shelf mounted in the refreshment center,...
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6441625 |
Contactless conductivity detector with transmitter/receiver electrode
A contactless conductivity detector uses a signal electrode arranged longitudinally between two ground electrodes. Conveniently, the ground electrodes can be integral with a metal housing that...
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6437560 |
Combined suction cup and isolated sensor
A combined vacuum cup and sensor is utilized to lift parts. The vacuum cup defines a vacuum chamber between radially inner and outer lips. The sensor is mounted radially inwardly of the inner lip,...
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6420866 |
Apparatus and method for detecting metallized containers in closed packages
An apparatus and method used to detect metallized containers or other objects in closed packages traveling in a conveyor stream. The apparatus includes a pair of coil units mounted in association...
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6407546 |
Non-contact technique for using an eddy current probe for measuring the thickness of metal layers disposed on semi-conductor wafer products
A method and system for identifying thicknesses of inspection samples, such as semiconductor wafers is presented. The method and system includes a probe housing, comprising an eddy current sense...
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6380731 |
Motor unit with an integrated speed sensor for a bicycle hub transmission
A motor unit is provided for operating an internal hub transmission, and a speed sensor is mounted to the motor unit for detecting a speed signal external to the motor unit. Since the speed sensor...
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6356075 |
Position sensor system including voltage transfer function
A position sensing device including two spaced conductive coils constituting a primary and secondary winding of a transformer. A coupling member is mounted to a moveable object. This movement...
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6344740 |
Guide device for testing elongated objects
A guide device for linear guidance of elongated objects, particularly for positioning wires passing a nondestructive eddy current test device, can be the inlet nozzle or outlet nozzle, and has a...
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6339331 |
Methods and apparatus for inspecting TV-shaped openings, using eddy current
An inspection apparatus includes a component engagement apparatus, a detection apparatus, and a movement apparatus and is controlled by a cam. A drawer is slidably attached to the component...
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6294909 |
Electro-magnetic lithographic alignment method
A method of aligning a lithographic fabrication tool to a substrate to be exposed or patterned by the tool includes the steps of providing a first conductive coil pattern on a surface of the...
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6288785 |
System for determining spatial position and/or orientation of one or more objects
A system for determining spatial position and/or orientation of one or more objects. The system includes an optical subsystem and a non-optical subsystem. The optical subsystem includes optical...
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6281679 |
Web thickness measurement system
A non-contacting thickness measurement apparatus is described, which is capable of on-line, highly accurate web thickness measurements. The apparatus is comprised of a first and second distance...
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6278270 |
Apparatus and method for detecting small distance changes between opposed surfaces using giant magneto resistance effect sensor
A device that can sense small changes in distance between opposed surfaces includes a ferromagnetic material and a giant magneto resistance effect sensor. A current source applies a current to the...
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6278380 |
Method and apparatus for sensing vehicle
First and second loop coils are located at respective positions separate from each other by a predetermined distance. A first electric signal is generated which depends on an inductance of the...
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