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| Number | Title | Issue Date |
| 8166818 | Using pole pieces to guide magnetic flux through a MEMS device and method of making A translational, Micro-Electro-Mechanical System (MEMS) accelerometer device with precisely formed pole pieces to guide magnetic flux through a coil in a MEMS device layer. An example device includes a device layer, a magnetic return path component attached to a fir... | 05/01/2012 |
| 8122767 | D'arsonval movement mems accelerometer Microelectromechanical (MEMS) accelerometer and acceleration sensing methods. A MEMS accelerometer includes a housing, a proof mass suspended within the housing by at least one torsional flexure, and a torsional magnetic rebalancing component. In an example embodime... | 02/28/2012 |
| 8104345 | Miniature acceleration sensor A miniature sensor for detecting acceleration and deceleration processes has at least one bar-like spring element which is formed by a nanowire, which is connected by one end to the detector substrate and projects from the latter and which preferably carries at its ... | 01/31/2012 |
| 8065915 | MEMS accelerometer Microelectromechanical (MEMS) accelerometer and acceleration sensing methods. A MEMS accelerometer includes a proof mass suspended by at least one hinge type flexure, at least one planar coil located on the proof mass, and at least one magnet positioned such that a ... | 11/29/2011 |
| 7997136 | MEMS force balance accelerometer Microelectromechanical (MEMS) accelerometer and acceleration sensing methods. A MEMS accelerometer includes a proof mass, a planar coil on the proof mass, a magnet, a first pole piece positioned proximate a first side of the proof mass, and a second pole piece posit... | 08/16/2011 |
| 7958782 | Device with a magnetic sensor arrangement for detecting acceleration Devices (1) are provided with sensor arrangements (2) comprising field generators (10) for generating magnetic fields and first/second/third elements (R1-R4, S1-S4, T1-T4) for detecting first/second/thir... | 06/14/2011 |
| 7886600 | Motion sensor and portable telephone using the same A motion sensor which can easily and accurately detect bearing, attitude and acceleration in any of three-dimensional directions and a portable telephone using the same. The motion sensor comprises three magnetic sensing parts for detecting magnetic field strength i... | 02/15/2011 |
| 7621185 | Acceleration sensor and electronic device comprising the same There is provided an acceleration sensor that is capable of detecting acceleration with high precision and capable of reducing the size and cost due to its simple structure. The acceleration sensor comprises: a pair of cantilevers arranged on a same straight line or... | 11/24/2009 |
| 7543498 | Spring member for acceleration sensor, acceleration sensor and magnetic disk drive apparatus A spring member used in an acceleration sensor, for supporting weight members that cooperate as magnetic field generation members or magnetic field detection sensors includes at least one strip-shaped plate spring with a fulcrum and support sections separated from t... | 06/09/2009 |
| 7523664 | Acceleration sensor and magnetic disk drive apparatus An acceleration sensor includes a housing member, first and second magnetic field generation members with weights, a spring member with a fulcrum attached to the housing member, and first and second magnetic field detection sensors attached to the housing member to ... | 04/28/2009 |
| 7444872 | Acceleration sensor and magnetic disk drive apparatus An acceleration sensor includes at least one permanent magnet, a spring member for supporting the at least one permanent magnet to displace the at least one permanent magnet when an external force is applied, and a magnetic field detection sensor mounted in stationa... | 11/04/2008 |
| 7444871 | Acceleration sensor and magnetic disk drive apparatus An acceleration sensor includes a pair of permanent magnets, each having a surface facing a magnetic field detection sensor, arranged in parallel so that the surfaces of the pair of permanent magnets have different magnetic polarities with each other, a spring membe... | 11/04/2008 |
| 7443158 | Sensor, and method for measuring physical quantity by use of the sensor A sensor includes a first X-axis GMR element to a fourth X-axis GMR element fixed on a substrate, and a movable coil movably supported on the substrate. When electric current flows through the movable coil, a magnetic field is generated around the movable coil. The ... | 10/28/2008 |
| 7420364 | Small-sized attitude detection sensor and portable telephone using the small-sized attitude detection sensor An attitude detection sensor includes three magnetic sensing parts that detect magnetic field strength in respective directions along three axes perpendicular to each other, and two tilt sensing parts that detect tilt angles around two axes perpendicular to each oth... | 09/02/2008 |
| 7403352 | Acceleration sensor and magnetic disk drive apparatus An acceleration sensor includes a housing member, a spring member attached to the housing member, a magnetic field generation member fixed to the housing member, and at least one magnetic field detection sensor and a weight member, fixed to the spring member so that... | 07/22/2008 |
| 7392704 | Acceleration sensor and magnetic disk drive apparatus An acceleration sensor includes a housing member, a spring member attached to the housing member and provided with freedom in at least one direction of acceleration to be detected, a magnetic field generation member with weight fixed to the spring member, and at lea... | 07/01/2008 |
| 7347097 | Servo compensating accelerometer A servo compensating accelerometer includes a top housing half and a bottom housing half rigidly connected together, and each having coaxial threaded openings. A sensing element is positioned between the top and bottom halves and affixed to the bottom half. Top and ... | 03/25/2008 |
| 7322115 | Steering column module for a motor vehicle The invention relates to a steering column module for a motor vehicle, comprising a steering angle sensor (13) that is inserted into a module housing (1,2). The rotor of the steering angle sensor is assigned to a steering column and co-operates with at... | 01/29/2008 |
| 7315446 | Hard drive connecting device for notebook computer A hard drive connecting device for a notebook PC is installed in a case of the notebook PC for connecting a main board and a hard drive in the case, which includes a flexible board having at least a first side, at least a second side, and conductive lines for electr... | 01/01/2008 |
| 7305879 | Cross-component superconducting gravity gradiometer with improved linearity and sensitivity and method for gravity gradient sensing A cross-component superconducting gravity gradiometer sensitive to off-diagonal components of the gradient tensor includes, for each gradient axis, a pair of closely matched angular accelerometers coupled by superconducting circuitry, including sensing circuits desi... | 12/11/2007 |
| 7305882 | Accelerometer using magnetic transducer technology The accelerometer uses magnetic transducer technology. A mass-block, mounted to a base by an elongate member (shaft), moves relative to the base due to accelerations. The elongate-member has at least one magnetised transducer region (circumferential or longitudinal)... | 12/11/2007 |
| 7301721 | Falling sensor and the information processing device making use of it A falling sensor is provided, which detects a falling of a magnetic disk drive or an information processing device installed with said magnetic disk drive and which is effective for avoiding physical damages of magnetic heads and magnetic disk media. The magnetic di... | 11/27/2007 |
| 7285952 | Rotation angle detecting device A rotation angle detecting device is rotated by a rotating object via a gear mechanism to detect a rotation angle of the rotating object. The rotation angle detecting device includes a housing, a magnet rotor unit having a permanent magnet and a central hole, a magn... | 10/23/2007 |
| 7271583 | Systems and methods for decoding a signal A system for decoding a signal of a rotating portion of a machine. The system includes a sensor configured to output N signals based on signals received from the rotating portion, and a processor configured to derive a value from a plurality of differences between s... | 09/18/2007 |
| 7265539 | Calibration of a hall effect sensor An actuator having an output shaft, a motor for rotating the output shaft between a first position and a second position, and an electronic control module having a controller and a sensor. The sensor is configured to output a signal to the controller indicative of t... | 09/04/2007 |
| 7262594 | Rotation angle detector A rotation angle detector includes a rotator, a detecting rotator, a magnet, an anisotropic magnetoresistive element, an amplifier, and a controller. The controller connects an output terminal of the anisotropic magnetoresistive element to the ground so as to detect... | 08/28/2007 |
| 7259551 | Position sensing for moveable mechanical systems and associated methods and apparatus Position sensing of movable elements including but not limited to machine components is disclosed. Motion of a movable element can produce motion of a magnetic field, which can be detected by magnetic sensors. The motion and/or variations of a magnetic field and/or ... | 08/21/2007 |
| 7252001 | Three axis active magnetic levitation for inertial sensing systems The invention relates to an inertial sensor based on the magnetic levitation of an inertial mass comprising an active magnetic bearing unit arranged in such a way as to levitate the inertial mass and characterized by the fact that it furthermore comprises additional... | 08/07/2007 |
| 7253609 | Encapsulated measuring apparatus for detecting a velocity and/or acceleration of a rotationally or linearly moved component An encapsulated measuring device for detecting a velocity and/or acceleration of a rotationally or linearly moved component. The device includes a measuring device housing having a wall, and a scanning unit arranged in the housing, the scanning unit including a scan... | 08/07/2007 |
| 7231325 | System for evaluating a sensor signal The inventive device for evaluating the sensor signal includes the provider for providing the sensor signal, the processor for processing the sensor signal and for providing an information signal comprising information regarding the amplitude course of the sensor si... | 06/12/2007 |
| 7222535 | Acceleration sensor and magnetic disk drive apparatus An acceleration sensor includes a housing member, a spring member attached to the housing member, the spring member having freedom in at least one direction of acceleration to be detected, a weight and magnetic field generation member fixed to the spring member, and... | 05/29/2007 |
| 7224263 | Security apparatus An IG key monitor sends out an anti-theft instruction to a GAIN switching part, in case that an IG key SW (ignition key switch) was turned to an OFF state. The GAIN switching part receives the anti-theft instruction from the IG key monitor, and then, switches detect... | 05/29/2007 |
| 7219549 | Accelerometer with cantilever and magnetic field detector An accelerometer for measuring the displacement of a magnet body using magnetic detecting elements is provided, the accelerometer having superior measurement accuracy by suppressing influence of a peripheral magnetic field. The accelerometer has detecting units each... | 05/22/2007 |
| 7191654 | Methods and systems for adjusting magnetic return path with minimized reluctance Accelerometers having higher concentration of flux closer to the proof mass. The invention includes a proof mass, an excitation ring, a magnet, a pole piece, and a coil. The excitation ring includes a ring unit and a base unit that are attached and the ring unit or ... | 03/20/2007 |
| 7185541 | MEMS magnetic device and method A MEMS device and method of manufacturing comprises a magnetic sensor attached to a frame; at least one magnet adjacent to the magnetic sensor; a proof mass attached to the magnet; a cantilever beam attached to the proof mass; and a rod attached to the cantilever be... | 03/06/2007 |
| 7170280 | Method and device for the detection of local displacements and rotations In a method for the detection of local displacements and rotations, a sum signal and additionally a difference signal are formed from two separately generated signals of two transducer elements (W1, W2), which are spaced from each other, and subsequent... | 01/30/2007 |
| 7140248 | Speed measuring device and method A velocity measuring device is mounted to a support, optionally a wearable support such as a glove, watch, wrist or arm band, or the like. Alternatively, the support is a sports club or removably attaches to a sports club. The velocity measuring device includes a po... | 11/28/2006 |
| 7134342 | Magnetic infrasound sensor A magnetic infrasound sensor is produced by constraining a permanent magnet inside a magnetic potential well above the surface of superconducting material. The magnetic infrasound sensor measures the position or movement of the permanent magnet within the magnetic p... | 11/14/2006 |
| 7134448 | Transducer for monitoring the position of a movable body A transducer for monitoring the position of movable bodies and in particular for monitoring the position of valve flaps and other elements in connection with systems for fire extinction, is composed of a pipe (4) which is closed at one end and thus forms a ho... | 11/14/2006 |
| 7113063 | Rotation sensing Methods and apparatus implementing and using techniques for sensing rotations of a rotating device, including using at least one switch located in a first plane and a magnet rotating in a plane substantially parallel to the first plane about a rotation axis, the mag... | 09/26/2006 |
