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| Number | Title | Issue Date |
| 8181538 | Magnestostrictive torque sensor and manufacturing method thereof, and electric power steering system A magnestostrictive torque sensor detects rotating torque applied to a rod-shaped rotating shaft to work around the rotating shaft based on a change in magnetic characteristics of a magnetostrictive film formed on a surface the rotating shaft so as to extend around ... | 05/22/2012 |
| 8087306 | Sensor arrangement for measuring a torque A sensor arrangement for measuring a torque acting on a shaft, wherein the shaft has a first shaft section and a second shaft section and these two shaft sections can be rotated relative to one another, including at least one magnetic encoder arranged on the first s... | 01/03/2012 |
| 8079275 | Shaft arrangement having a rolling bearing A shaft arrangement, with a rotatable shaft supported in a rolling bearing, which has rolling elements and an outer race, a torsion sensor having a permanently magnetic ring and at least one magnetic field sensor fastened to a fixed sensor bracket attached to the ou... | 12/20/2011 |
| 8079274 | Rotational component torque measurement and monitoring system A system and method for measuring torque on a rotating component, comprising of signal-producing components which are applied to the rotating component, and a means for obtaining the signals produced by said signal producing components, in which at least two signal ... | 12/20/2011 |
| 8047084 | Torque-index sensor A torque-index sensor having index sensor and torque sensor closely arranged and integrated therein with lightened interference between them is provided. The invented torque-index sensor is comprised of torque sensor that includes first magnetic sensor arranged besi... | 11/01/2011 |
| 8011256 | Magnetostrictive torque sensor and method of manufacturing same A magnetostrictive torque sensor includes a single magnetostrictive film disposed on a steering shaft, and first and second coils for detecting changes in a magnetic property of the magnetostrictive film. The single magnetostrictive film includes a first anisotropic... | 09/06/2011 |
| 8001851 | Rotation sensor mounted on a shaft A rotation sensor includes a first rotor constituted by a magnetic material and having an outer face that has first conductive layers disposed in two levels as viewed in the direction of a rotation axis and second conductive layers disposed outwardly of and between ... | 08/23/2011 |
| 7845244 | Torque sensor A torque sensor includes a first shaft, a second shaft that is coaxially linked to the first shaft, a cylindrical magnet that rotates integrally with the first shaft, a pair of magnetic yokes that rotate integrally with the second shaft, and three magnetic sensors t... | 12/07/2010 |
| 7677115 | Magnetostrictive torque sensor and electric power steering apparatus A magnetostrictive torque sensor having a rotating shaft on which at least one magnetostrictive film is formed, and has such a structure that the rotating shaft has small diameter portions and large diameter portions positioned on both end sides of the small diamete... | 03/16/2010 |
| 7621189 | Apparatus and method for generating and sensing torsional vibrations using magnetostriction Provided is a method and apparatus for generating and sensing torsional vibrations using magnetostriction, in order to perform modal testing on a bar, a pipe, a shaft, a beam, or the like. The apparatus includes a torsional vibration generating part transmitting tor... | 11/24/2009 |
| 7597010 | Method of achieving high transduction under tension or compression A method of using a magnetostrictive material to achieve a high magnetomechanical coupling factor comprising building an internal anisotropy energy into the magnetostrictive material and applying a tensile or compressive stress to the magnetostrictive material with ... | 10/06/2009 |
| 7497132 | Magnetostrictive torque sensor and electrically powered steering apparatus using same A magnetostrictive torque sensor comprising a first magnetostrictive film, a second magnetostrictive film, and a third magnetostrictive film formed over the entire circumferential periphery of a surface of a rotating shaft. A first sensor coil, a second sensor coil,... | 03/03/2009 |
| 7490522 | Magnetostrictive multilayer sensor and method for producing a sensor A sensor has a substrate in which a mechanically deformable area is formed. A first magnetostrictive multilayer sensor element and a second magnetostrictive multilayer sensor element are formed in the mechanically deformable area, wherein the first magnetostrictive ... | 02/17/2009 |
| 7433758 | Control apparatus of robot A robot control apparatus capable of largely reducing a calculation amount to be capable of lowering a load of a CPU is provided. A control apparatus of a robot includes: a plurality of shafts interfering with each other; each of the shafts including a motor (8 | 10/07/2008 |
| 7412906 | Steering system torque sensor A sensor apparatus for a power steering system on a vehicle, where the apparatus includes an input shaft for receiving a steering input and for rotating about a rotational axis. An output shaft is provided for transmitting the steering input from the input shaft to ... | 08/19/2008 |
| 7386930 | Method for manufacturing a magnetostrictive torque sensor For forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft associated with a magnetostrictive torque sensor, a magnetostrictive coat forming method comprises a step of fitting a cylindrical masking jig over the outer peripheral... | 06/17/2008 |
| 7363827 | Torque sensor system including an elliptically magnetized shaft A torque sensor includes a shaft and a magnetic sensor. The shaft may have at least one active region having an elliptical magnetization. The magnetic sensor may be configured to sense a magnetic field about the shaft, where the magnetic field is representative of a... | 04/29/2008 |
| 7350425 | Method of eliminating hysteresis from a magnetoelastic torque sensor A method and device for reducing hysteresis in a torque transducer element includes a coil that is excited with an alternating current to produce a magnetic field that saturates the torque transducer element. Magnetic saturation of the torque transducer element is p... | 04/01/2008 |
| 7320255 | Torque sensor magnetometer The magnetometer assembly according to this invention includes a first coil assembly and a second coil assembly for detecting separate magnetic fields along an axial portion of a torque transducer. The first and second coil assemblies are driven by independently adj... | 01/22/2008 |
| 7320251 | Load detector and transport equipment including the same A load detector is constructed so as to stabilize an output voltage responding to an input load. The load detector includes a magnetostrictive sensor which includes a hollow case, a coil housed in the case, and a rod-like magnetic member located at an axial center o... | 01/22/2008 |
| 7310870 | Method for forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft of magnetostrictive torque sensor For forming an annular magnetostrictive coat on an outer peripheral surface of a rotational shaft associated with a magnetostrictive torque sensor, a magnetostrictive-coat forming method comprises a step of fitting a cylindrical masking jig over the outer peripheral... | 12/25/2007 |
| 7308833 | Torque sensor, wire harness, electric power steering assembly and terminal holder In a torque sensor having lead pins connected to a wire harness, the wire harness includes: a plurality of lead wires; a plurality of connection terminals each having a sleeve mounted around each of the lead pins and a connection portion extended from an outer perip... | 12/18/2007 |
| 7308835 | Reduction of hysteresis in a magnetoelastic torque sensor A torque sensor assembly includes a reduced hysteresis by imparting a magnetoelastic ring with a first remnant magnetic field and a second remnant magnetic field that are disposed in opposite orientations. The first and second magnetic fields are spaced apart such t... | 12/18/2007 |
| 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 |
| 7302867 | Magnetic transducer torque measurement A magnetic transducer element is formed by rotating an integral region of a shaft about an axis in the presence of a magnetic source. An annulus of magnetization results in having its magnetization in the axial direction. The exterior magnetic field emanated by the ... | 12/04/2007 |
| 7293472 | Torque detecting apparatus In a torque detecting apparatus, in each of two flux concentrating rings, a portion along a circumferential direction is raised outward in a radial direction so that a flux concentrating section is provided that has a plate shape extending on one side in an axial di... | 11/13/2007 |
| 7295001 | Magnetostrictive transducer using tailed patches and apparatus for measuring elastic wave using the magnetostrictive transducer A magnetostrictive transducer generating a torsional wave in a subject having a predetermined section and measuring a torsional wave propagating in the subject. In the magnetostrictive transducer having a ferromagnetic patch attached to a predetermined position of a... | 11/13/2007 |
| 7279890 | Tandem rotation detector for high precision detection A tandem rotation detector is provided for effectively preventing the occurrence of leakage flux between rotation angle detection mechanisms so that high-precision detection can be always realized. The tandem rotation detector of the present invention includes a fir... | 10/09/2007 |
| 7261005 | Magneto-elastic resonator torque sensor A magneto-elastic torque sensor and system include a substrate and a magneto-elastic sensing component formed from or on the substrate. The magneto-elastic sensing component and the substrate together form a magneto-elastic torque sensor, which when subject to a str... | 08/28/2007 |
| 7256505 | Shaft mounted energy harvesting for wireless sensor operation and data transmission A device for monitoring a rotating shaft is provided. The device measures strain in the shaft and provides angular velocity and torque in the shaft. The device includes a sensor, sensor conditioning circuitry, a microprocessor, and a transmitter, all located on a ro... | 08/14/2007 |
| 7249527 | System for sensing absolute torque and a module comprising it A system for determining the absolute torque applied to a rotating shaft includes a sensitive element that is deformable under torsion and a measuring device having first and second coders that are intended to be rotationally fixed, respectively, in the vicinity of ... | 07/31/2007 |
| 7246531 | Torque sensor for detecting a shaft torque A first shaft and a second shaft are connected coaxially. A torsion bar converts a torque applied between two shafts into a torsion displacement. A multipolar magnet is fixed to the first shaft. One set of magnetic yokes is fixed to the second shaft and disposed in ... | 07/24/2007 |
| 7237444 | Torque cell for determining a torque load on a rotary member A torque detection system is provided for detecting torque applied to a rotary shaft. A spring element is connected to an input and output shaft. As torque is applied to the shaft system, the input shaft is rotationally offset from the output shaft and a sensing sys... | 07/03/2007 |
| 7225686 | Torque sensing apparatus A torque sensor includes a substantially tubular giant magnetostrictive member, a shaft passing through the inner bore of the giant magnetostrictive member and capable of transmitting torque to the giant magnetostrictive member, and a detection coil for detecting ch... | 06/05/2007 |
| 7225687 | Power steering apparatus and torque sensor Power steering apparatus includes input and output shafts connected by a torsion bar; and a coil unit disposed around one of the shafts and arranged to sense torque between the input and output shafts. A housing includes an axial bore in which the shafts and coil un... | 06/05/2007 |
| 7221150 | Toothed shell on a variable reluctance speed sensor An improved variable reluctance speed sensor configuration yields increased signal strength for a given sensor element diameter and/or sensor-to-speed wheel spacing. The improved sensor according to various embodiments of the invention comprises a plurality of passa... | 05/22/2007 |
| 7219562 | Angle sensor The invention provides an angular position sensor (1) comprising two magnets (32, 33) attached to the inside face of a rotor (31) for generating a magnetic field (50) and a magnetism detection device (43) disposed in the magnetic f... | 05/22/2007 |
| 7219564 | Magnetised transducer element for torque or force sensor A magnetic torque transducer for a structure such as a disc through which torque is transmitted between a central shaft to which the disc is mounted and an outer periphery such as a gear wheel. The intervening region through which torque is transmitted is magnetized... | 05/22/2007 |
| 7210360 | Apparatus for sensing position and/or torque An apparatus measures relative displacement between a first end and a second end of a shaft. The first and second ends being centered on a shaft axis. The apparatus includes first and second ferromagnetic plates. The first ferromagnetic plate has a first side and a ... | 05/01/2007 |
| 7191668 | Torque measuring device for rotating body having light conductive member provided with optical path converting means A torque measuring device for a rotating body comprises: a rotary section including first and second flanges provided respectively at driving and driven sides, and a hollow cylinder provided between the first and second flanges; light emitting elements provided at a... | 03/20/2007 |
