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| Number | Title | Issue Date |
| 8049645 | Cylindrical cover-attached encoder apparatus A cylindrical cover-attached encoder apparatus, including a magnetic metal-based body having a cylindrical shape, a magnetic rubber-based encoder having a cylindrical shape and formed around the outer peripheral surface of said magnetic metal-based cylindrical body,... | 11/01/2011 |
| 7864075 | Rotary electrostatic encoder A rotary electrostatic encoder comprising a disk-shaped fixed plate having a first transmission electrode, a second transmission electrode, and four reception electrodes; a disk-shaped rotating plate having a first induction electrode superposed on and facing the fi... | 01/04/2011 |
| 7456758 | Magnetic encoder apparatus To provide a magnetic encoder having high resolution and a high output, and a magnetoresistive sensor for an encoder. A fine sensor having a reduced demagnetization field is produced by: forming a free layer consists of a laminated soft magnetic film in which two so... | 11/25/2008 |
| 7435958 | Electron beam apparatus and method for production of its specimen chamber A structure of an electron beam apparatus having shielding properties for shielding against an environmental magnetic field is provided. The electron beam apparatus comprises a mirror barrel for housing a magnetic lens for converging an electron beam onto a specimen... | 10/14/2008 |
| 7391009 | Angle-measuring system having irregular reference mark that is dedicated without time delay An angle-measuring system comprising at least one transmitter provided with a number of complementary signal-generating elements disposed in pairs and creating a pattern of signals. The elements create a reference mark irregularly configured at least at one spot. A ... | 06/24/2008 |
| 7367257 | Hydraulic cylinder with position encoder An actuator has a position encoder provided by a helical groove formed in the piston rod. The groove is filled with a material of different magnetic characteristics to provide a smooth exterior surface and a varying discernible signal as the rod moves relative to th... | 05/06/2008 |
| 7363136 | Controller of electric power steering apparatus An initial abnormality analysis data is reliably retained by a controller of an electric power steering apparatus. The controller of the electric power steering apparatus is constituted by comprising abnormality detection device for detecting the abnormality of a st... | 04/22/2008 |
| 7352294 | Absolute position detector An absolute position detector for accurately reading a code recorded on an absolute track is provided. Output signals from sensors that read a code recorded on an absolute track are input into a binarization processor. A compensator provided within the binarization ... | 04/01/2008 |
| 7336205 | Rotary encoder A rotary encoder exhibits a shaft, which can be coupled in torque-proof fashion to a rotating object to be measured. The shaft is connected at a true angle of rotation to a material measure and is divided axially into a drive section (10), which can be couple... | 02/26/2008 |
| 7322605 | Seat track assembly for a motor vehicle having an integrated position sensor A seat track assembly for a seat of a motor vehicle having a floor and an airbag. The seat track assembly includes a stationary rail fixedly secured to the floor. The seat track assembly also includes a movable rail fixedly secured to the seat and slidably engaged w... | 01/29/2008 |
| 7318001 | Method and apparatus for collecting data for detecting and locating disturbances A method and apparatus for collecting data for detecting and locating disturbances. A plurality of distinct regions of the space are identified, and, preferably, a hand-held device adapted for sensing positions of the device and respective representations of a field... | 01/08/2008 |
| 7315102 | Axial gap motor An axial gap motor is described which comprises a rotor shaft rotatable about its axis in case. A rotor is fixed to the rotor shaft to rotate therewith. The rotor includes a plurality of magnets. A stator is disposed about the rotor shaft at a position to coaxially ... | 01/01/2008 |
| 7301348 | Electrostatic encoder An electrostatic encoder comprising receiving coupling electrodes formed on a scale, and extending in a predetermined direction, transmitting coupling electrodes provided on a sensor head, and located to face the receiving coupling electrodes, digital electrodes pro... | 11/27/2007 |
| 7292028 | Apparatus for sensing the absolute-value angle of a shaft An apparatus serves to sense the absolute value of the rotational position of a shaft (14). The apparatus has a first single-turn rotary encoder (30) that is arranged at one end (20) of the shaft (14) and is arranged to sense the latter's... | 11/06/2007 |
| 7283295 | Releasable/interchangeable fine focus knob for a microscope A microscope includes at least one focusing means for focusing an object plane. The focusing means includes first and second adjustment means. The first and second adjustment means are coaxial and independently rotatably adjustable with respect to one another. The s... | 10/16/2007 |
| 7271746 | Encoding data generation method and device In a coded data generation method of resampling a road shape for setting a plurality of nodes, arranging position information of each node represented by a deflection angle from the immediately preceding node to generate a data string of the deflection angles, conve... | 09/18/2007 |
| 7265685 | Position sensor with compensated magnetic poles The object of the invention relates to an encoder for a rotary position sensor, including a multipolar magnetic ring driven into rotation around its axis, and provided at its circumference with magnetic poles of a given sign, alternately positioned with magnetic pol... | 09/04/2007 |
| 7259695 | Low-profile multi-turn encoder systems and methods Various alternative embodiments of a multi-turn capacitive encoder device are disclosed. The device includes two members that are fixed relative to each other and that include respective capacitive electrodes that are capacitively coupled between the two members. Th... | 08/21/2007 |
| 7253611 | Magnetic displacement ruler This invention relates to a magnetic displacement measurement device, which comprises a ruler body and a vernier, wherein a magnetic main ruler is fixed on the ruler body, and a secondary ruler is fixed on the vernier; the secondary ruler comprises a magnetic sensor... | 08/07/2007 |
| 7248185 | Position sensor with unbalanced cyclic ratio A sensor including at least one rotary magnetic coder with first and second rotary tracks, at least two detection cells, and logical resources for processing of digital signals delivered by the cells. At least the detection cell located in relation to a magnetic tra... | 07/24/2007 |
| 7233262 | Magnetizing jig A magnetizing jig used in cooperation with a magnetizing yoke formed with a circular magnetizing face, for fixing a ring-like magnetic encoder base plate to be magnetized thereto and magnetizing it by exciting a multi-pole magnetizing coil provided on the magnetizin... | 06/19/2007 |
| 7215112 | Non-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 |
| 7199727 | Electrostatic encoder and electrostatic displacement measuring method An electrostatic encoder comprises a movable element having electrodes and a stator having induction electrodes and potential detection electrodes. The electrostatic encoder further comprises a voltage driving circuit configured to apply a voltage to the induction e... | 04/03/2007 |
| 7195261 | Position sensor system and vehicle seat provided with the position sensor system A position sensor system is provided at a slidable vehicle seat for sensing seat position in zones and facilitating controlling of the operation of a vehicle passenger restraint device according to a position of the vehicle seat relative to the vehicle passenger res... | 03/27/2007 |
| 7196527 | Redundant compact encoders A position transducer for a rotary member such as the rotor of a motor has a rotating encoder disc and flat, disc-shaped elements interacting with the encoder disc to produce position dependent signals. The encoder disc has at least one active element such as metal ... | 03/27/2007 |
| 7185916 | Vehicle seat assembly having a field effect sensor for detecting seat position A vehicle seat assembly including a rail pair defining a mounting rail and a triggering rail. One of the rails is supported on a floor pan of the vehicle and the other is adapted to support a seat cushion. The rails are moveably supported relative to each other. Als... | 03/06/2007 |
| 7161256 | Automatic power generation light-image fan device An automatic power-generation light-image fan device is described. It has a fan motor, a vane set, a circuit board, a programmable chip, an automatic power-generation component, a rectifier filter circuit, a magnetic sensor and a positioning magnet. In this device, ... | 01/09/2007 |
| 7157904 | Magnetic detection apparatus A magnetic detection apparatus is able to make a selection between AC coupling and DC coupling thereby to improve the accuracy of a final output signal corresponding to a magnetic movable element, thus making it possible to ensure excellent detection performance. Th... | 01/02/2007 |
| 7148817 | Device for positional and/or length determination A device for positional and/or length determination comprising a carrier unit with an absolute magnetic length coding and a measuring unit that co-operates with the carrier measuring unit and can be displaced in relation to the latter. The measuring unit has a magne... | 12/12/2006 |
| 7141904 | Gear reduction unit and geared motor connector A gear reduction unit includes an electric motor that rotatably drives a drive shaft, a magnet on the drive shaft and a Hall effect sensor close to the magnet. The sensor is supported by a connector transmitting power to the electric motor. The connector may be remo... | 11/28/2006 |
| 7141988 | Capacitive position sensor and sensing methodology A simple and robust variable coaxial capacitive sensor and detection method for monitoring the position of a rapidly reciprocating member such as a piston or displacer in a free piston Stirling engine. The coaxial capacitor of the present invention in a preferred em... | 11/28/2006 |
| 7123027 | Capacitively coupled position encoder One embodiment of the present invention includes a sensor with a face having several tracks spaced apart from one another. One of these tracks has a first electrode and a second electrode separated by an electrically nonconductive gap. Also included is a detection d... | 10/17/2006 |
| 7119718 | Encoding techniques for a capacitance-based sensor One embodiment of the present invention comprises a sensor with a face having several tracks spaced apart from one another. One of these tracks has a first electrode and a second electrode separated by an electrically nonconductive gap. Also included is a detection ... | 10/10/2006 |
| 7116096 | Vehicle direction detection using tone ring A tone ring preferably for use in a braking system of a vehicle has a first pattern of excitation indicative of speed of rotation of the tone ring, and a second pattern of excitation including frequency variations that is indicative of direction of rotation of the t... | 10/03/2006 |
| 7113697 | Displacement detection device and lens barrel A displacement detection device which detects a displacement of a movable member which is provided so as to be displaceable with respect to a fixed member, comprises: a scale that is provided as a unit with the movable member; a displacement detection section that d... | 09/26/2006 |
| 7104119 | Method and apparatus for determining rotary position A system for determining the angular position of a rotating element such as an engine crankshaft. An encoder wheel is divided into a plurality of equal-angle segments, each comprising a peripheral tooth extending radially over a central angle representing an angular... | 09/12/2006 |
| 7091883 | Absolute position encoder A transducer, a method and a coding pattern for determining a kinematic measurable variable are disclosed. A transducer comprises a first device part which is moveable in or through a corresponding device for oil or natural gas production and a second device part wh... | 08/15/2006 |
| 7091648 | Actuator adopting the principle of electrostatic induction An electrostatic actuator comprises a movable element provided with electrodes, and a stator provided with inductive electrodes for generating electrostatic induction in the electrodes of the movable element. The electrodes of the movable element includes a driven e... | 08/15/2006 |
| 7088025 | Variable-reluctance resolver and rotational angle sensor using same A variable-reluctance resolver includes a rotor and a stator. The rotor includes axially connected first and second rotor portions. The first rotor portion has n salient poles provided about a center axis at uniform angular intervals, where n is an arbitrary integer... | 08/08/2006 |
| 7085638 | Steering angle sensor assembly including reduction gear and logic module A steering angle sensor assembly is for use with a vehicle having a rotatable steering mechanism. The assembly includes a first rotational indexing member operably couplable to the steering mechanism for rotation therewith. The steering mechanism and the first index... | 08/01/2006 |
