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Class 324/207.11 - Displacement


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter which includes a device to note the change
No. of patents: 157
Last issue date: 11/29/2011


1        
NumberTitleIssue Date
8067933Device for locating a vehicle tied to a roadway
A cost-effective system provides reliable location information for locating a vehicle tied to a guideway. Reference markers are mounted to the guideway and scanning devices are disposed in the vehicle and generate at least one output signal when they pass a referenc...
11/29/2011
8040126Position detection device and optical apparatus
A position detection device includes a magnetic generation unit that has: a first magnetism generating section that is provided on one end side along a predetermined direction and generates magnetism; a second magnetism generating section that is provided on another...
10/18/2011
7986138Method and device for measuring the pole position angle of a magnetic levitation vehicle of a magnetic levitation system
A method for measuring the pole position angle between the magnetic field of a track-side stator of a magnetic levitation train track and the magnetic reference axis of a magnetic levitation vehicle located on the track. When the levitation magnet of the magnetic le...
07/26/2011
7710107Force or field balance device and method for measuring position
A device and method for disclosing position of a positionable input by positioning the input over a range of positions to cause the magnitude of the directional component of a vector representing a field or force produced by a source to change from a reference magni...
05/04/2010
7583077Pressure sensing device for rotatably moving parts
A magnetic pressure sensing device for rotatably moving parts, of the type including at least one magnetic field source element associated with the rotatably moving part and a magnetic field sensing element associated to a fixed part to measure parameters of a magne...
09/01/2009
7579828Procedure for location of mobile magnetic targets
A procedure for locating a mobile magnetic target (2) using magnetic measurements includes determining first and second positions (P1 and P2), and a first possible speed (V) of the target (2) along a first direction (Y), determining a thi...
08/25/2009
7463020Inductive proximity switch based on a transformer coupling factor principle
The invention relates to a preferably ferriteless inductive proximity switch having at least one transmitting coil, one oscillator circuit and at least two receiving coils arranged in the alternating magnetic field of the transmitting coil, whereby the transmitting ...
12/09/2008
7443161Method of determining angles
In order to provide a method of determining an angle a of an external magnetic field relative to a magnetoresistive angle sensor with two full bridges which respectively supply an output signal U1=U0sin(2α), U2=U0cos(2α)...
10/28/2008
7429053Subframe structure and vibration damper for the same
A subframe structure for an automotive vehicle wherein a subframe is attached through a rubber mount to a vehicle body, suspension components are assembled onto the subframe so that the suspension components are held connected to the vehicle body through the subfram...
09/30/2008
7425823Position detecting device and method of adjusting position
A position detecting device has a movable unit, and a hold unit that movably holds the movable unit. One of the movable unit and the hold unit has a magnetic field generator having an engaged portion and a guide opening. A magnetic field sensor is provided on the ot...
09/16/2008
7414533System for placing radio frequency identification (RFID) antennas, tags and interrogators
A system and method for optimally placing radio frequency identification (RFID) antennas. The system varies the placement of RFID tag and interrogator antennas with respect to each other and a stationary object or objects. A signal generator sends a known reference ...
08/19/2008
7411387Position detection apparatus and vehicle mirror angle detection apparatus
To provide a position detection apparatus with an expanded range of good linearity in a magnetic sensor's output characteristic with respect to position of a movable body as well as to provide a vehicle mirror angle detection apparatus using the position detection a...
08/12/2008
7402996Instrument and method for measuring three-dimensional motion
An instrument (10) for measuring three-dimensional motion in a living body comprises a plurality of magnetism generators (12i) fixed to one of at least two objects (44, 46) moving relatively in the living body, a plurality of magnetic...
07/22/2008
7375516Magnetic field detector, current detector, position detector and rotation detector employing it
A magnetic field detector having a reference magnetoresistive element and a magnetic field detecting magnetoresistive element. The reference magnetoresistive element and the magnetic field detecting magnetoresistive element each has a stack structure including an an...
05/20/2008
7367269Blast movement monitor and method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations
A method for measuring the movement of boundaries between different portions of a heterogeneous rock body is disclosed. The method comprises placing a plurality of blast movement monitors 109 in a rock body prior to blasting and noting the position of each bl...
05/06/2008
7356421Precise location of buried metallic pipes and cables in the presence of signal distortion
A new approach for locating an underground line described herein remains accurate in the face of bleedover by including both amplitude and phase from at least two magnetic field strength sensors in the measurement set. A numerical optimization step is introduced to ...
04/08/2008
7345473Inductive position sensor with common mode corrective winding and simplified signal conditioning
An inductive position sensor for rotary motion includes a transmitter coil and a receiver coil, the receiver coil generating a receiver signal when the transmitter coil is excited by an alternating current source. A movable coupler element modifies the inductive cou...
03/18/2008
7342399Magnetic anomaly sensing-based system for tracking a moving magnetic target
A system for tracking a moving magnetic target uses a magnetic anomaly sensing system to continually determine magnetic gradient tensors associated with the target and converts the magnetic gradient tensors to gradient contraction scalars. A processor uses the magne...
03/11/2008
7330175Information processing apparatus
In an information processing apparatus, a display unit is pivotally supported on a main unit by a hinge having a hinge pin. Left and right buttons serving as first and second function buttons for controlling an object chosen by a pointer appearing on a display, and ...
02/12/2008
7323868System and method for temperature independent measurement of standoff distance using an eddy current sensor
An embodiment of the invention generally relates to a temperature-independent method of determining an engine health parameter, namely stand-off distance, between an eddy current sensor and a conductive element. The method includes receiving a signal from the eddy c...
01/29/2008
7323843Method and device for treating signals for detection of stator and rotor errors in magnetic circuits in a synchronous machine
It is possible to determine the types and values of stator and rotor errors in magnetic circuits in a synchronous machine by measuring the induced voltage (ui) for the terminals of measurement loops which can capture an image of the induction in the measu...
01/29/2008
7319319Sensing apparatus and method
There is described a sensor comprising an excitation winding, a signal generator operable to generate an excitation signal and arranged to apply the generated excitation signal to the excitation winding, a sensor winding electromagnetically coupled to the excitation...
01/15/2008
7317313Magnetic encoder apparatus
A magnetic encoder apparatus has a housing that includes a base portion and a cover plate portion. The housing also has a magnet that is contained in the base portion of the housing, a sensor chip having a major surface located adjacent to the magnet, and an alignme...
01/08/2008
7280937System and method for detecting an axial position of a shaft
A shaft comprises a hardened outer metallic layer having a first hardness level with a generally uniform radial depth. A first strip extends in a generally longitudinal direction in the outer metallic layer. The first strip has a second hardness level different from...
10/09/2007
7276827Motorized reduction gear for functional equipment of a vehicle
A motorized reduction gear intended for functional equipment of a vehicle includes a rotor having with a rotor shaft bearing a commutator, a reduction gearbox containing a gearwheel engaged with a worm belonging to the shaft, and a magnetic ring attached to the comm...
10/02/2007
7262374Pointing device and key sheet for pointing device
Provided are a pointing device allowing accurate depressing operation on a key top and involving no erroneous input or erroneous operation, and a key sheet for the pointing device. On the back surface of a base sheet (14) of a key sheet (15) for a poin...
08/28/2007
7248994Digital method and apparatus for sensing position with a linear variable differential transformer
An apparatus and method for determining a linear position from a linear variable differential transformer (LVDT) including a primary coil driven by an excitation signal, and two secondary coils coupled to two correlated signals. The method includes converting the co...
07/24/2007
7235967Eddy current testing probe and eddy current testing apparatus
An eddy current testing probe has a flexible substrate adapted to face to a surface of a test article, a plurality of coils which are fixed to the flexible substrate and energized one of which is capable of being changed sequentially, a pressing member for pressing ...
06/26/2007
7221154Inductive position sensor with common mode corrective winding and simplified signal conditioning
An inductive position sensor for rotary motion includes a transmitter coil and a receiver coil, the receiver coil generating a receiver signal when the transmitter coil is excited by an alternating current source. A moveable coupler element modifies the inductive co...
05/22/2007
7215112Non-contact linear absolute position sensor
A non-contact linear absolute position sensor includes a first magnetic encoder having n+1 pole pairs, a second magnetic encoder having n pole pairs and located and aligned with the first magnetic encoder so as to cover a linear distance. The magnetic encoders are a...
05/08/2007
7184914Sensor signal processor
A sensor signal processor includes a scale having optically or magnetically fine divisions; a detection sensor that moves with respect to the scale and that is provided in association with the divisions of the scale; and a position detecting unit for calculating pos...
02/27/2007
7170278Device for sensing the axial position, in relation to the other component, of one of two components mobile relative to each other
A device (16) for sensing the axial position, in relation to the other component, of one of two components mobile relative to each other, in particular a piston (12) in relation to a cylinder housing (14), which device has a magnetic signal elem...
01/30/2007
7162152Position detecting device of lens barrel with disk-shaped magnet and sensor chip
A position detecting device for detecting a position of a movable body which is moved by a drive system having a rotation body includes a magnetic part having an N-pole and an S-pole on a face of the rotation body and a sensor chip having at least a magneto-resistiv...
01/09/2007
7148679Transformer probe
A probe (10) for sensing movement of a body of magnetic material comprises a magnetically energisable pole piece (30), a closed loop electrical circuit (20) having a first end (25) which is wound around the pole piece (30) and form...
12/12/2006
7141985Field programmable driver/transmitter for a proximity probe
An electronics package for use with a proximity probe is disclosed that is capable of being calibrated to work with any proximity probe and cable and that is capable of being programmed in the field. The electronic package establishes and measures a plurality of gap...
11/28/2006
7138907Spring sensor retention assembly for sensor apparatus mounted in a vehicle seat cushion
A sensor assembly for use in a vehicle seat cushion for detecting the presence of an occupant includes a mat adapted to be installed in the vehicle cushion. The mat includes first mounting structure and a first sensor device attached to the mat. A first member has a...
11/21/2006
7132948System for optimally placing radio frequency identification (RFID) antennas, tags, and interrogators
A system and method for optimally placing radio frequency identification (RFID) antennas. The system varies the placement of RFID tag and interrogator antennas with respect to each other and a stationary object or objects. A signal generator sends a known reference ...
11/07/2006
7129698Method and device for preparing a sensor signal of a position sensor for transmission to an evaluation unit
The present invention is based on the finding that the evaluation of the sensor signals of a position sensor with a mechanical period or, in general terms, the cooperation between position sensors and evaluation units, can be improved by eliminating divergence betwe...
10/31/2006
7123002System for transmitting the position of a control element
The present invention relates to a system for reliably transmitting the position of a control element to an electronic processing unit by way of electric signal lines, wherein the position signal is transmitted by way of several signal channels, and use thereof in a...
10/17/2006
7081059Piston rod position detector, autotensioner and belt tension adjuster
A piston rod position detecting mechanism is proposed which can detect continuously or in a multiple-point manner that the piston rod position has changed due to increase or decrease in the protruding amount of the piston rod due to aging. The protruding amount from...
07/25/2006
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