| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324207240 | Linear | 60 |
| 20080204006 | LINEAR POSITION SENSOR - A sensor assembly for measuring a linear position includes a slider having a rack gear that engages a pinion gear. The pinion gear is rotatable relative to the slider responsive to linear movement. The pinion gear supports a permanent magnet that generates a magnetic field. Changes in the magnetic field caused by rotation of the pinion gear are sensed by a magnetic field sensor. Signals from the magnetic field sensor are indicative of a rotation of pinion gear and correspond to linear movement of the slider. | 08-28-2008 |
| 20080303515 | Position sensor - A position sensor including at least one magnet producing a magnetic field, at least one magnetic flux sensing device sensing the magnetic field, and a ferrous sleeve. The ferrous sleeve being rotatable about a longitudinal axis of the magnet. The magnetic field detected by the magnetic flux sensing device being substantially unaffected by rotation of the ferrous sleeve relative to the magnet. | 12-11-2008 |
| 20090033319 | SYSTEM AND METHOD OF PERPENDICULARLY MAGNETIZING POSITION INFORMATION IN A MAGNETICALLY HARD LAYER OF A MOVING COMPONENT - A position-sensing system magnetically senses the position of a piston rod moving with respect to a cylinder. A magnetically hard layer on the piston rod provides a recording medium. Information is perpendicularly magnetized in regions of the magnetically hard layer. These regions provide an encoding scheme for determining the position of the piston rod. Magnetic-field sensors are positioned over redundant tracks of magnetically recorded regions. Each magnetic-field sensor positioned over a given track senses the same magnetized regions while the piston rod moves with respect to the cylinder. Other magnetic-field sensors can sense ambient fields for use in performing common-mode rejection. A write head can dynamically repair damaged or erased regions detected by the magnetic-field sensors. Energized by a battery-backup power source, the magnetic-field sensors and associated circuitry can continue to track movement of the piston rod when the machinery is off. | 02-05-2009 |
| 20090066321 | LOCATING STATIONARY MAGNETIC OBJECTS - A technique for locating stationary magnetic objects comprises placing magnetic sensors on a movable platform; for each sensor, measuring a total magnetic field signal in an area of detection; using the sensors to identify a line upon which a target stationary magnetic object is located; and fixing a location of the object by moving the platform in substantially straight lines until the object is detected by at least two of the sensors; using the measured signals to determine a first path on which the object lies; positioning the sensors so that a line connecting two of the sensors intersects the first path on which the object lies; moving the platform along a second path substantially parallel to the first path; recording two positions at which at least two of the sensors detect a maximum total magnetic field signal from the object; and identifying a third path through the two positions. | 03-12-2009 |
| 20090066322 | LINEAR DISPLACEMENT DETECTION APPARATUS - A linear displacement detection apparatus is configured to convert a linear displacement of a shaft into a rotary displacement of a sensor rotor of a rotary displacement sensor so as to detect the linear displacement. A sensor lever is fixed to the sensor rotor and rotatable about an axis of the sensor rotor. A sensor rod is located closer to the shaft than the sensor lever and configured to transmit the linear displacement of the shaft to the sensor lever. A bearing member is located closer to the shaft than the sensor rod and configured to release rocking of the shaft. | 03-12-2009 |
| 20090072818 | Position sensor, optical head device, head moving mechanism, information recordng/reproducing device and position control system - As imaging devices are miniaturized, and optical devices are miniaturized, lens moving mechanisms are also miniaturized. Thus, position sensors for them are required to be miniaturized and have high accuracy at low cost. A magnet | 03-19-2009 |
| 20090128141 | Position Sensor for a Downhole Completion Device - The position of a movable downhole component such as a sleeve in a choke valve is monitored and determined using an array of sensors, preferably Hall Effect sensors that measure the strength of a magnetic field from a magnet that travels with the sleeve. The sensors measure the field strength and output a voltage related to the strength of the field that is detected. A plurality of sensors, with readings, transmits signals to a microprocessor to compute the magnet position directly. The sensors are in the tool body and are not mechanically coupled to the sleeve. The longitudinal position of the sleeve is directly computed using less than all available sensors to facilitate the speed of transmission of data and computation of actual position using known mathematical techniques. | 05-21-2009 |
| 20090140730 | Linear position sensor - A sensor used to sense the position of an attached movable object. The sensor can be mounted to a pneumatic actuator. The sensor includes a housing that has a pair of cavities or pockets separated by a wall. A magnet carrier is positioned within one of the cavities and a magnet is coupled to the magnet carrier. The magnet carrier is coupled to the moveable object. A magnetic sensor is positioned in the other of the cavities. The magnetic sensor generates an electrical signal that is indicative of a position of the movable object. | 06-04-2009 |
| 20090160435 | LINEAR SENSOR HAVING ANGULAR REDIRECTION AND CABLE DISPLACEMENT - The linear sensor | 06-25-2009 |
| 20090174396 | INDUCTIVE DISPLACEMENT DETECTOR - A detector for measuring relative position along a measurement path comprising: a passive, laminar electrical intermediate device extending along the measurement path wherein the extent of the said electrical intermediate device in an axis normal to the measurement path varies along the measurement axis; at least one laminar transmit winding and at least two laminar receive windings wherein the said at least two laminar receive windings are displaced from each other along the measurement path wherein each laminar receive winding is substantially electrically balanced with respect to the at least one laminar transmit winding; arranged such that the mutual inductance between at least one laminar transmit winding and at least two laminar receive windings indicates the relative position of the electrical intermediate device. | 07-09-2009 |
| 20090201013 | POSITION SENSOR ARRANGEMENT AND METHOD - A position sensor arrangement and method for determining the position of a movable device, such as an electronic gear shifter for vehicle. According to one embodiment, the position sensor arrangement is arranged in a skewed or offset fashion, with respect to the shifting pattern of the electronic gear shifter, such that movement of the gear shifter from one discrete position to an adjacent discrete position causes a change in both an x-axis coordinate and a y-axis coordinate. | 08-13-2009 |
| 20090243598 | POSITION MEASUREMENT USING MAGNETIC FIELDS - A position sensing system includes a member movable along a path, the member having an elongated magnet extending along the path, the magnetic field orientation of the elongated magnet being at an angle with respect to the path. A sensor determines a position of the member along the path based on a measurement of a magnetic field generated by the elongated magnet. | 10-01-2009 |
| 20090256554 | Position measuring apparatus - A position measuring apparatus includes (a) a sleeve that has an open first end and a second end opposite the first end, (b) a guide pin guided at least partly in the sleeve, (c) a spring, (d) a linear magnetic field sensor and (e) a magnet disposed adjacent to the linear magnetic field sensor. To avoid wear even in the presence of large temperature fluctuations, the magnet is disposed on a face of the guide pin facing the second end of the sleeve, and the spring is disposed between the second end of the sleeve and the magnet such that the spring urges the magnet against the guide pin. | 10-15-2009 |
| 20090256555 | LINEAR INDUCTIVE POSITION SENSOR - A linear position sensor having a transmitter coil which generates electromagnetic radiation when excited by a source of electrical energy and wound in a first direction. A receiver coil is contained within the transmitter coil and the receiver coil includes both a first loop wound in a first direction and a second loop wound in the opposite direction. A coupler element linearly moves along a first direction relative to the transmitter coil which varies the inductive coupling between the transmitter coil and the receiver coil as a function of the linear position of the coupler element to thereby vary the electrical output signal from the receiver coil when excited by the transmitter coil. The first and second loops of the receiver coil are linearly aligned with each other along the first direction. | 10-15-2009 |
| 20090302832 | MEASURING SYSTEM FOR DETECTING A ROTARY-LINEAR DISPLACEMENT AND CORRESPONDING ROTARY-LINEAR DRIVE - The invention relates to more accurate rotative and linear positional measurement for a rotary-linear drive. A measuring system comprising a linear sensor ( | 12-10-2009 |
| 20100033169 | Position Detector - A position detector can correct a position for detecting a moving object without changing a physical location of a moving mechanism, a Hall element and/or the like. Either a permanent magnet | 02-11-2010 |
| 20100039103 | SYSTEM FOR DETERMINING THE POSITION OF A MOVABLE MEMBER - A first magnet is secured to the movable member at a first axial position and is associated with a first magnetic field. A secondary magnet is secured to the movable member at a secondary axial position and is associated with a secondary magnetic field. A sensor assembly comprises magnetic sensors arranged in an array (e.g., on a fixed member). A first magnetic sensor is spaced apart from the sensor assembly such that the first magnetic sensor detects the first magnetic field of the first magnet in a first state and an absence of or change in the first magnetic field in a second state. A data processor is arranged for determining an axial position of the moveable member based on at least one of the magnetic fields sensed by the sensor assembly. | 02-18-2010 |
| 20100045275 | ROTARY OR LINEAR POSITION SENSOR HAVING AVARIABLE MAGNET PROFILE - The invention relates to a magnetic angular or linear sensor including at least one permanent magnet defined in a cylindrical (r, Q & z) or Cartesian (x, y & z) coordinate system and at least two magneto-sensitive elements, in which the magnet can move in relation to said two magneto-sensitive elements. The invention is characterized in that at least one dimension of the magnet varies as a non-constant function and in that the magnetization of the magnets is oriented in a single direction, i.e. x, y or z in the case of a magnet defined in a Cartesian coordinate system or r, Q or z in the case of a magnet defined in a cylindrical coordinate system. | 02-25-2010 |
| 20100090689 | POSITION DETECTION MAGNET AND POSITION DETECTION APPARATUS - A position detection apparatus includes a position detection target member, a magnet that moves in accordance with movement of the position detection target member, and a plurality of magnetic detectors provided on a surface opposite a movement plane of the magnet. A flat yoke is provided on the reverse face of the magnet. The magnetic polarity of a peripheral side part of the magnet is opposite to the magnetic polarity of a center part thereof. The peripheral side part is formed at a regional range that can be defined on the basis of a predetermined distance(s) measured from a side edge of the yoke. | 04-15-2010 |
| 20100117631 | Resolver - A resolver comprises an excitation coil for receiving an excitation signal and a detection coil for outputting a detection signal. The detection sine wave is changeable according to an amount of displacement of a movable element provided in the excitation coil or the detection coil. The resolver detects the amount of displacement of the movable element based on the excitation signal and the detection signal. The detection coil is one coil formed of a first detection coil pattern and a second detection coil pattern connected in series or in parallel such that the second detection coil pattern is shifted in phase by a half cycle from the first detection coil pattern. | 05-13-2010 |
| 20100127697 | Linear position sensor with anti-rotation device - An anti-rotation device or assembly for preventing the rotation of a magnet in a linear position sensor and eliminating the risk of undesired magnetic field measurements and incorrect sensor signal outputs. In one embodiment, the anti-rotation device is an anti-rotation plate which is fixed to the housing of the linear position sensor and a magnet carrier which includes at least one finger extending into a receptacle defined in either the edge or the body of the magnet carrier to prevent the magnet carrier from rotating relative to the plate. In another embodiment, the magnet carrier includes a key and the magnet includes a groove. The key extends into the groove for preventing the rotation of the magnet in the magnet carrier. | 05-27-2010 |
| 20100141245 | LINEAR AND ROTATIONAL INDUCTIVE POSITION SENSOR - An apparatus for providing a signal related to a position of a part comprises an exciter coil, and a receiver coil disposed proximate to the exciter coil. The exciter coil generates magnetic flux when the exciter coil is energized by a source of electrical energy, such as an alternating current source. The receiver coil generates a receiver signal when the exciter coil is energized, due to an inductive coupling between the receiver coil and the exciter coil. The receiver coil has a plurality of sections, the inductive coupling tending to induce opposed voltages in at least two of the sections. Embodiments of the present invention include linear sensors, rotational sensors, and novel configurations for improved ratiometric sensing. | 06-10-2010 |
| 20100141246 | Magnetic Type Digital-analogic Position-sensing Device - A magnetic type digital-analogic position-sensing device utilizes plural magnetic strips and plural digital sensing readers to perform position-sensing operation. One of the magnetic strips is provided with an analogic sensing reader. After being finely divided, the signal outputted from the analogic sensing reader can cooperate with the signals outputted from the digital sensing readers to obtain the displacement of the sensor. By such arrangements, the position-sensing device can both have high environment adaptability and high resolution. | 06-10-2010 |
| 20100219814 | MAGNETIC POSITION SENSOR - In a magnetic position sensor, first and second detecting cores are disposed so as to line up with each other on opposite sides of a detecting gap. A magnet unit is displaced relative to the first and second detecting cores together with displacement of a measured object. The magnet unit has: first and second magnet cores that are disposed so as to line up with each other on opposite sides of an origin gap; and a magnet that generates two magnetic flux loops between the first and second detecting cores and the first and second magnet cores, the magnetic flux loops having a boundary at the origin gap. | 09-02-2010 |
| 20100277161 | Compensating for position errors in displacement transducers - Methods of compensating for position errors due to signal scaling, linearity, and offset between first and second members in a displacement transducer are provided, including: producing a first signal at the first member; producing a second signal at the first member; modulating the first signal at the second member to include at least one region with an invariant amplitude as the first and second members are displaced relative to one another along a measurement axis; determining a relation between a sample of the second signal and the invariant amplitude of the first signal as an indication of an error parameter; and generating a compensated sample based upon the determined relation. | 11-04-2010 |
| 20100308805 | TEMPERATURE TOLERANT MAGNETIC LINEAR DISPLACEMENT SENSOR - A linear motion sensor has two pairs of opposed spaced apart stacks of two simple two-pole bar magnets. Each stack has one shorter outer magnet and one longer inner magnet, with the outer magnets centered on the inner magnets. The poles of the magnets are oriented the same in each pair, but opposite with respect to the other pair. The shape of the magnets results in the magnetic fields produced by each pair of magnets being substantially outside of the magnets themselves, so that the load line for the combined magnets is above the knee in its B/H material demagnetization curve. The pairs of magnets define a gap therebetween in which a magnetic field sensor is mounted for travel. The shorter magnets are about one half the length of the longer magnets such that the magnetic field in the gap varies substantially linearly as the sensor moves along the gap. | 12-09-2010 |
| 20100308806 | Sensing Apparatus for Detecting Linear Displacements - A sensing apparatus according to the present invention includes a movable part rotatably supported by a base, a first input unit that is part or all of a first member formed integrally with or secured to the movable part, a second input unit that is part or all of a second member formed integrally with or secured to the movable part, a turning member turning together with the movable part, and a sensing element that is secured to a reference position of the base, senses a direction of the turning member relative to the reference position, and outputs a signal determined on the basis of the detected direction to identify a first linear displacement and a second linear displacement. | 12-09-2010 |
| 20100308807 | Linear Sensor - A linear sensor is described with a casing ( | 12-09-2010 |
| 20100315072 | Linear Sensor - The invention relates to a linear sensor, comprising a sleeve ( | 12-16-2010 |
| 20110025310 | POSITION FEEDBACK FOR SELF BEARING MOTOR - A sensing mechanism includes a magnetic source, a magnetic flux sensor, a sensor backing on which the magnetic source and flux sensor are mounted, and a ferromagnetic target, where the magnetic source, magnetic flux sensor, and ferromagnetic target are positioned to form a magnetic circuit from the magnetic source to the target, from the target to the sensor, and returning to the magnetic source through the sensor backing. | 02-03-2011 |
| 20110057646 | Apparatus and method for sensing position of non-orbital movable truck - There is provided a position sensing apparatus when a non-orbital movable truck moves over a spherical surface, a cylindrical surface, or a flat surface, which is capable of position sensing even when, e.g., the non-orbital movable truck circumferentially moves over the spherical surface or the cylindrical surface to be hidden from the position sensing apparatus. A second linear encoder is disposed which includes a wire in a main body thereof to output an amount by which the wire is withdrawn as an encoder value. The tip of the wire of the second linear encoder is fixed to a position at the non-orbital movable truck to which the tip of the wire of a linear encoder is fixed. From an amount by which the wire of the linear encoder is withdrawn and the amount by which the wire of the second linear encoder is withdrawn, the position of the non-orbital movable truck is calculated in a calculation device. | 03-10-2011 |
| 20110057647 | Apparatus Detecting Relative Body Movement - The invention relates to a measuring device for detecting a body moving in relation to an, in particular, tubular container. Said device comprises at least one magnet unit which generates a magnetic field, measures this magnetic field and which is assigned to the container and/or to the magnetic body. The device also comprises at least one evaluation device connected to the magnet units and provided for receiving measurement signals of the magnet units. The aim of the invention is to improve a measuring device of this type in order to be able to easily determine, in addition to the position of the body in relation to the container in a longitudinal direction, the position of the body in relation to the container in the transverse direction with a relatively high level of accuracy. To this end, the magnet units comprise a maximum magnetic flux that is essentially perpendicular to the direction of the relative motion of the body and container. | 03-10-2011 |
| 20110062949 | SHIELDED POSITION SENSOR FOR TRANSLATIONALLY MOVING PARTS - A sensor is disclosed for monitoring a part which can move translationally relative to a sensor with reference to its position on the axis of motion. This part is for example a piston in a cylinder which is equipped with a sensor. The sensor can be actuated by means of a magnet which is oriented in the direction of motion with respect to the north and south pole and which is located on the movable part. The sensor has three reed contacts which are aligned in parallel and of which the first and the second reed contact are located in one plane and parallel next to one another with their lengthwise axes, by which they can be actuated almost at the same time by the magnetic field of the magnet which is located on the movable part. The third reed contact is located at a distance to the plane of the first and the second reed contact. This sensor with the first two reed contacts is mounted facing the actuating magnet. This arrangement has the advantage that an external magnetic field always actuated the third reed contact as well, if it can actuate the first two reed contacts. Then the sensor indicates an error report or an unsafe position, but never a safe position of the movable part. | 03-17-2011 |
| 20110115478 | Digital Quantity Gauge For An Agricultural Aircraft Payload Hopper Using A Magnetostrictive Linear Displacement Transducer (MLDT) - A system for determining the quantity of a liquid agricultural product available for spraying on a field from a tank in an airplane comprising a payload storage tank for holding the agricultural product, an elongated magnetostrictive linear displacement transducer tube located vertically in the aircraft payload storage tank, a probe float slidably coupled to move up or down on the elongated magnetostrictive linear displacement transducer tube, and a permanent magnet coupled to the probe float. The position of the magnet is sensed by the elongated magnetostrictive linear displacement transducer tube which generates a signal that marks the level of the liquid in the aircraft payload storage tank, and converter means converts the generated signal that marks the level of the liquid in the aircraft payload storage tank to a quantity of liquid in the aircraft payload storage tank which is displayed to the pilot. | 05-19-2011 |
| 20110273166 | MAGNETIC ENCODER SCALE - An encoder scale is a piston rod for use in a pneumatic or hydraulic cylinder. The method includes the steps of providing a mask defining a required groove pattern on an encoder scale member that is formed from a first material (e.g. steel) and etching material from the encoder scale member, through the mask, to form a plurality of grooves in the outer surface of the encoder scale member. A second material such as copper is then deposited on to the encoder scale member to substantially fill the grooves, the second material having a different magnetic permeability than the first material. A machining process (e.g. grinding) is then used to remove any excess second material and thereby provide an encoder scale member having a substantially smooth outer surface. A step of coating the outer surface of the encoder scale member with a metal, such as chronium, is then performed. | 11-10-2011 |
| 20120032668 | Transportation Vehicle System and Charging Method for the Transportation Vehicle System - A magnetic sensor array including a plurality of magnetic sensors detects a phase regarding a magnetic pole of a magnetic pole array including magnetic poles of N and S arranged alternately. A pitch identification unit detects a pitch number of the magnetic pole currently being detected by the magnetic sensor array, in the magnetic pole array. | 02-09-2012 |
| 20120038348 | ANGLE DETECTION APPARATUS AND POSITION DETECTION APPARATUS - An angle detection apparatus comprising a magnet rotor having a multi-pole segment magnet, and a magnetic sensor for detecting the direction of a magnetic flux generated from the multi-pole segment magnet; the multi-pole segment magnet having pluralities of magnetic poles along the rotation direction of the magnet rotor, the magnetic sensor comprising a magnetosensitive plane having pluralities of spin-valve, giant-magnetoresistive devices each having a pinned layer having a fixed magnetization direction and a free layer having a magnetization direction rotating in response to the magnetic flux direction; and the magnetic sensor being positioned relative to the magnet rotor, such that the magnetosensitive plane crosses the magnetic flux, with perpendicular magnetic flux density components having different amplitudes on the magnetosensitive plane. | 02-16-2012 |
| 20120133357 | HYBRID SENSOR ARRANGEMENT - A position-sensor and/or speed-sensor arrangement comprising a sensor with at least a first sensitive main plane and an encoder with at least one encoder track face. The sensor senses a magnetic field generated and/or modulated by the encoder, and the sensor has at least a first magnetic field sensor element and a second magnetic field sensor element. The first magnetic field sensor element has at least a first main sensing direction and the second magnetic field sensor element has an at least second main sensing direction different from the first main sensing direction. The first magnetic field sensor element and the second magnetic field sensor element are arranged such that at least an element output signal of the first magnetic field sensor element has a phase shift absolute value between 75° and 105° with respect to at least one element output signal of the second magnetic field sensor element. | 05-31-2012 |
| 20120161755 | ANGULAR OR LINEAR MAGNETIC POSITION SENSOR NOT SENSITIVE TO EXTERNAL FIELDS - The invention relates to an angular or linear magnetic position sensor that comprises a mobile member including at least one magnet ( | 06-28-2012 |
| 20120249128 | MAGNETIC SENSOR SYSTEM - A linear sensor system includes a first field sensor displaced linearly from a second field sensor. A member having high magnetic permeability is disposed between the first field sensor and the second field sensor. The member is optimized in shape and material to completely remove any redirection or interference of the magnetic flux in the field sensors. A torque transmitting device incorporating the linear sensor system is also disclosed. | 10-04-2012 |
| 20120262159 | PUMP LINE LINEAR POSITION SENSING ASSEMBLY - A two-piece collar ( | 10-18-2012 |
| 20130033259 | POSITION DETECTOR - A permanent magnet is fixed to a stationary portion. A yoke made of magnetic material is provided to a rotating portion. The yoke is tube-shaped to surround the permanent magnet and has a chord portion into which a magnetic flux generated by the permanent magnet preferentially flows. The chord portion is arranged in such a manner as to be close to the permanent magnet. A Hall element is arranged at a specified position of the stationary portion relative to the permanent magnet | 02-07-2013 |
| 20130049743 | FLOAT POSITION SENSOR - [Problem] To provide a float position sensor with a simple structure in which, even when a float is moved after the power is turned off, adjustment is not particularly necessary when the power is turned on next time. | 02-28-2013 |
| 20130057264 | DEVICE FOR MEASURING THE SPEED OF DISPLACEMENT OF AN OBJECT DEFORMING THE LINES OF THE TERRESTRIAL MAGNETIC FIELD - An apparatus for measuring speed of movement of an object deforming lines of Earth's magnetic field includes a first and second magnetometer disposed on either side of a traffic roadway for the object and substantially perpendicular to the object. The magnetometers are configured for measuring deformation of Earth's magnetic field by the object travelling over the roadway. The apparatus also includes a processing unit configured for extracting, from each of the magnetometers, a measurement value corresponding to a quotient defined by a distance of the object with respect to the magnetometer divided by a speed of movement of the object, and for calculating a speed of the object from the measurement values and a geometrical disposition of the magnetometers with respect to one another and with respect to the traffic roadway. | 03-07-2013 |
| 20130088218 | CONTACTLESS MAGNETIC LINEAR POSITION SENSOR - In a position sensor, two field sensors are placed along a line parallel to the movement to be detected. Two magnets are placed at an angle to each other to generate a magnetic field such that their position is a linear or approximately linear function of the difference between the outputs of the sensors. | 04-11-2013 |
| 20130088219 | EXTENDED SMART POSITION SENSING RANGE USING ELECTROMAGNETICS - A system having a sensor using one or more magnetic field detectors to determine its position on a path of travel relative to one or more magnets situated on the path. The magnets may be electromagnets arranged in regions along the path with a region between two electromagnets. One or more electromagnets may be selectively activated so as to define a region where the sensor is present. An indication from the system may provide a position of the sensor within a region and identify the region where the sensor is situated. | 04-11-2013 |
| 20130147468 | LINEAR POSITION SENSOR - A sensor used to sense the position of an attached movable object. The sensor can be mounted to a pneumatic actuator. The sensor includes a housing that has a pair of cavities or pockets separated by a wall. A magnet carrier is positioned within one of the cavities and a magnet is coupled to the magnet carrier. The magnet carrier is coupled to the moveable object. A magnetic sensor is positioned in the other of the cavities. The magnetic sensor generates an electrical signal that is indicative of a position of the movable object. | 06-13-2013 |
| 20130200887 | DEVICE FOR GENERATING A SENSOR SIGNAL AND METHOD FOR DETERMINING THE POSITION OF A SENSOR - The invention relates to a device for generating a sensor signal, the profile thereof depending on the position of a magnetic field-generating element relative to the device, with at least two magnetically sensitive sensors disposed along a measurement path, wherein a support field device, which generates a magnetic support field in the magnetically sensitive sensors, has at least in the magnetically sensitive sensors an essentially identical direction and an essentially homogeneous field strength. | 08-08-2013 |
| 20140028296 | MAGNETIC SENSING DEVICE FOR FASTENERS - A method and system for magnetic measurement of elongation of a fastener includes a means for providing a magnetic field gradient along an axis of the fastener, such as one or more permanent magnets. A magnetic sensor is mounted in the fastener in the magnetic field gradient. Magnetic field measurements taken by the magnetic sensor are dependent on a length of the fastener and are sufficiently sensitive to monitor loading during a service life of the fastener. The fastener may be equipped with a signal reader and a data interface for offloading measurement values. | 01-30-2014 |
| 20140084907 | ELECTROMAGNETIC INDUCTION POSITION DETECTION SENSOR - An electromagnetic induction position detection sensor includes a plurality of loop coils, each being an N-turn loop coil formed by winding a conductor N times (N is an integer equal to or greater than 2), and each coil turn having long side portions that are separated by a predetermined width and that are parallel to each other. The loop coils are arranged at predetermined intervals in a predetermined direction intersecting the long side portions of the loop coils. The width of at least one of the N turns of the Mth loop coil from the edge portion of the sensor in the predetermined direction (M is an integer equal to or greater than 2) is larger than the predetermined width, with the long side portion of this turn of the Mth loop coil arranged more outward than the long side portions of the other turns of the Mth loop coil. | 03-27-2014 |
| 20140176127 | APPARATUS AND METHOD FOR WRITING A PATTERN IN A SUBSTRATE - A method and apparatus are described for forming a pattern including one or more markings on a substrate. The method includes the step of forming each marking by locally heating the substrate, for example using a fibre laser. A step is also performed of monitoring the temperature of the substrate, e.g. using a temperature sensor, whilst each marking is being formed. The method may be used to form a magnetic encoder scale on a stainless steel substrate having a high content of martensitic material. The local heating causes the martensitic material to be transformed into austenitic material. An encoder scale made using the method is also described. | 06-26-2014 |
| 20140176128 | Actuator and Sensor Assembly - An actuator and sensor assembly comprising respective sensor and actuator housings defining an interior chamber. Clips on the sensor housing engage the actuator housing for coupling the sensor and actuator housings together. The sensor housing includes a wall defining a pocket. A connector with a sensor couples to the sensor housing in a relationship wherein the sensor extends into the sensor housing pocket. A movable piston is located in the interior chamber and a tube thereon defines a receptacle for a magnet located adjacent the pocket. The piston is seated on a flexible diaphragm. An actuator shaft includes one end coupled to the piston and an opposite end coupled to a movable object. A plurality of pins in the actuator housing mount the assembly to a support bracket. The sensor senses changes in the magnetic field in response to changes in the position of the magnet relative to the sensor. | 06-26-2014 |
| 20140266167 | POSITION SENSOR ATTACHMENT BAND - A position sensor attachment band configured to secure a position sensor on an outer periphery of the cylinder tube includes a thin plate band, the thin plate band has one or more projections that project from the inner peripheral surface of the thin plate band which are disposed at least at the end positions among the end positions located in proximity to one end and the other end of the thin plate band in the length direction and the intermediate position, and the projections are disposed at positions completely within the width of the thin plate band and accordingly at positions completely away from the both side edges of the thin plate band on both sides in the width direction, and the projections are symmetrically arranged with respect to the center in the length direction of the thin plate band. | 09-18-2014 |
| 20140320118 | SENSOR MODULE WITH A DISPLACEMENT SENSOR AND A PRESSURE SENSOR IN A COMMON HOUSING - A sensor module comprises a housing in which a first displacement sensor and a first pressure sensor are arranged. The sensor module can have a second displacement sensor and a second pressure sensor. The module is being provided to monitor a coupling of a motor vehicle, for example a dual coupling of a lorry. | 10-30-2014 |
| 20150091554 | MAGNETIC ENCODER FOR PRODUCING AN INDEX SIGNAL - A magnetic encoder has a high resolution track including a plurality of North/South pole pairs defining a plurality of pole junctions, and a reference track including a North/South pole pair defining a North/South pole junction aligned with a first pole junction of the high resolution track, and a South/North pole junction aligned with a second pole junction of the high resolution track. Only a single pole junction of the high resolution track is positioned between the first and second pole junctions of the high resolution track. | 04-02-2015 |
| 20150130447 | Actuator and Linear Position Sensor Assembly - An actuator and sensor assembly with a housing defining a pocket and an access opening. A substrate with a sensor is located in the pocket through the access opening. A nozzle extends from the housing. A sleeve surrounds the nozzle and retains a hose on the nozzle. A connector assembly is located opposite and normal the pocket and the substrate. Compliant terminal pins extend generally normally from the connector assembly into the pocket and through-holes in the substrate. An actuator shaft gimbal includes a head located in a housing collar and a flexible neck extends through a housing aperture. A shoulder on the neck of the gimbal locks the gimbal in the collar. | 05-14-2015 |
| 20150345992 | DISPLACEMENT SENSOR AND DISPLACEMENT DETECTION METHOD - In a linear displacement sensor, two magnets with different polarities define one pitch of a magnetic scale. kn (k is a natural number greater than or equal to 2, n is a natural number greater than or equal to 1) sensor units configured to output a plurality of signals whose period is one pitch and whose phases with respect to the pitch are different are arranged along the magnetic scale in a one-pitch segment. Periodic errors with n periods per pitch of the sensor units are canceled out by averaging the phases from the kn sensor units. | 12-03-2015 |
| 20160003640 | TACT MEASUREMENT DEVICE FOR ACTUATOR AND SENSOR SIGNAL DETECTING DEVICE - A detecting unit detects a first output signal and a second output signal, which are output by a first sensor and a second sensor disposed on an actuator, and outputs a first detection signal and a second detection signal to a measurement unit. Based on the first detection signal and the second detection signal, the measurement unit measures a tact time taken for a piston to move from one end to another end of a movement range. | 01-07-2016 |
| 20160072367 | Position Detection Device, Position Detection Method, and Moving Body System - A moving body includes a first position detector configured to detect a position of the moving body by detecting poles of magnets and a second position detector disposed in a different position from a position of the first position detector in a moving direction of the moving body, and configured to detect the position of the moving body. A controller of the moving body determines the position of the moving body on a basis of a position detected by the second position detector when the first position detector is located in an irregular section in which the poles of the magnets are not disposed regularly. | 03-10-2016 |
| 20160084676 | LINEAR ENCODER DEVICE AND REFERENCE POSITION DETECTION METHOD - A linear encoder device ( | 03-24-2016 |
