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| Number | Title | Issue Date |
| 8171805 | Non-contact torque determination system and method for a non-mechanically coupled rotating system Methods and apparatus are provided for determining torque in an environmentally isolated system. A drive system is coupled to the environmentally isolated system via a non-contact, magnetic coupling that has a known angular stiffness and at least two coupling sectio... | 05/08/2012 |
| 8042412 | Turbomachinery system fiberoptic multi-parameter sensing system and method A fiberoptic multi-parameter sensing system for monitoring turbomachinery system shaft static and dynamic torques, vibration modes and associated operation status includes a multi-furcated fiber bundle based optical splitter configured to transmit light to a surface... | 10/25/2011 |
| 7591195 | Optical torque sensor A torque sensor that includes a sensor housing, a sensor input member at least partially received in the sensor housing, a sensor output member at least partially received in the sensor housing, a torsionally resilient coupling member that couples the sensor input m... | 09/22/2009 |
| 7415363 | High resolution torque measurement on a rotating shaft with movement compensation An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are positioned 90 degrees apart from the vertical probes. If the shaft moves h... | 08/19/2008 |
| 7398701 | Device and method for determining torques on a turbine shaft A device is described for determining the torque which is applied to a turbine shaft (10), the determination device having at least one system for contactless measurement of the integral torsion of the turbine shaft (10) and a unit for contactless meas... | 07/15/2008 |
| 7340345 | Method and circuit arrangement for determining a quality level of phase signals The present invention relates to a method and a circuit arrangement for evaluating phase signals for determining an angle or a path of a linearly or rotationally displaced component, whereby a number (N) of measured phase values (α), produced by scanning at ... | 03/04/2008 |
| 7339370 | Position and torque sensor A sensor having a first array of N magnetic pole pairs, where N is a positive number, and a second array of M magnetic pole pairs, arranged substantially in parallel to the first array, where M is a positive number different from N, such as N−1 or N+1. A first mag... | 03/04/2008 |
| 7270017 | Torque measuring device for rotating body A torque measuring device for a rotating body is provided, which includes: a stationary section; a rotary section; a rotary transformer composed of a primary coil disposed at the stationary section, and a secondary coil disposed at the rotary section, wherein an ele... | 09/18/2007 |
| 7265336 | Encoder utilizing a reflective cylindrical surface An encoder for measuring the position of a rotating shaft is disclosed. The encoder includes a drum having an encoding track thereon and a detector module having a light source and a photodetector. The drum includes a cylindrical surface characterized by an axis, th... | 09/04/2007 |
| 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 |
| 7249528 | Hub unit with sensor A hub unit having a sensor comprises a hub unit 1 having a wheel-side raceway member 4, a body-side raceway member 5 and two rows of rolling bodies 6, and a sensor device 2 provided on the hub unit 1. The body-side raceway m... | 07/31/2007 |
| 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 |
| 7220958 | Optical displacement sensor and external force detecting device An external force detecting device comprises a hollow-cylindrical support section, an action section disposed centrally inside the support section, and an optical displacement sensor which includes, at the action section on its center axis: a light source to emit a ... | 05/22/2007 |
| 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 |
| 7158223 | Torque measuring apparatus for rotating body To achieve the improvement in workability of attachment or detachment of a light receiving fiber for receiving a torque optical signal from a rotor, as well as the improvement in the light receiving efficiency of optical signals, a torque measuring apparatus compris... | 01/02/2007 |
| 7151324 | Electric steering lock The invention relates to an electric steering lock wherein a permanent magnet (20) and two different Hall sensors (21,22) are used to recognise a locking and an unlocking position. The pole transition (23) of the magnet (20) is oriented i... | 12/19/2006 |
| 7128604 | High power coaxial interconnect A blindmate interconnect coaxial connector includes a center conductor, a thermally-conductive dielectric surrounding the center conductor, and an outer tubular conductor surrounding the dielectric. The dielectric transfers heat from the center conductor to the oute... | 10/31/2006 |
| 7105802 | Torque measuring device for rotating body incorporating one light emitting element at rotational axis A torque measuring device for a rotating body includes: a rotary section integrally including a first flange, a second flange, and a hollow cylinder disposed between the first and second flanges; a plurality of torque detectors disposed at the inner circumference of... | 09/12/2006 |
| 7104133 | Torsional vibration measuring instrument A torsional vibration measuring instrument has a plurality of reflecting means (6, 7) arranged with stipulated intervals along surface of a rotator (5) of which torsional vibration is to be measured; a pulse light irradiating means (1, 2) for ir... | 09/12/2006 |
| 7102123 | Reflective imaging encoder Reflective image encoder. A reflective image encoder has an emitter such as one or more light emitting diodes, a diffuse reflective coder such as a code wheel or code strip reflecting a portion of the light from the emitter, an imaging lens forming an inverted image... | 09/05/2006 |
| 7093504 | Method and system for measuring torque The invention provides a method/system for measuring torque. The method/system includes providing a first rotating disk having a target pattern and providing a second rotating disk having a target pattern. The method/system includes providing a first set of at least... | 08/22/2006 |
| 7087889 | Rotational angle detecting apparatus and torque detecting apparatus First and second targets, the numbers of which are coprime, are provided at a rotor. Two detecting means oppose each of the first and second targets to output detection signals having phases different from each other in accordance with each position of the targets a... | 08/08/2006 |
| 7084537 | Rotation detecting device and wheel support bearing assembly utilizing the same A rolling bearing assembly equipped with an electric power generator, the assembly having: first and second members rotatable relative to each other through rolling elements; an electric power generator capable of generating an electric power by a relative rotation ... | 08/01/2006 |
| 7066035 | Torque measuring device for rotating body A torque measuring device for a rotating body comprises: a rotary section composed of first and second flanges to be joined respectively to driving and driven shafts, and a hollow cylinder having the first and second flanges formed respectively on both edges thereof... | 06/27/2006 |
| 7064316 | Code (ring) with two pairs of periodic line patterns A method for optical measuring data acquisition of a component that moves in a rotary or translatory manner, in particular for optical angle, torque, or distance measurement, includes generation of a first pair of periodic line patterns extending in the movement dir... | 06/20/2006 |
| 7044004 | Apparatus and method for applying optical stripes for torsional detection The present invention provides a method and apparatus for applying a uniformly-distributed pattern of stripes (8) on a component (6) of a large rotary machinery, such as an industrial generator. A method is provided that comprises measuring the circumf... | 05/16/2006 |
| 7034929 | Protective apparatus for the monitoring of a protected zone to be moved with a component A protective device for securing to a component movable along a track and for the monitoring of a protected zone moving with the component includes a light transmitter for the radiation of a divergent transmitted light beam into a spatial zone containing the protect... | 04/25/2006 |
| 6993977 | Remote structural material evaluation apparatus A method of unobtrusive evaluation of structural material integrity without requiring physical contact for referencing integrity values, comprising: directing an impact source at said structural material; obtaining signal information from the structural material by ... | 02/07/2006 |
| 6952973 | Method for attaching a torque measuring device In a method for fastening a torque measurement device for detecting a relative torque between an input shaft and an output shaft of a steering system, e.g., of a rack-and-pinion power-assisted steering system, the torque measurement device is integrally formed local... | 10/11/2005 |
| 6948381 | System and method for sensing torque on a rotating shaft A system and method relating to the measuring of torque in a rotating shaft is provided. An optical torque sensing system comprises a rotating shaft, wherein a sleeve of photo-elastic material overlays a portion of the shaft. A light emitting component delivers ligh... | 09/27/2005 |
| 6941207 | Steering angular velocity detecting device Operates steering angular velocity in first steering angular velocity calculating unit and second steering angular velocity calculating unit, by using steering angle signal from steering angle generating unit, and outputs steering angular velocity by switching them ... | 09/06/2005 |
| 6935193 | Device for measuring the angle and/or the angular velocity of a rotatable body and/or the torque acting upon said body A device for measuring an angle and/or the torque acting on a rotatable body is proposed according to the invention, whereby the rotational angle is detected by means of magnetic or optical sensors. In particular, in a preferred exemplary embodiment, two devices ( | 08/30/2005 |
| 6928886 | Arrangement for the detection of relative movements of two objects An arrangement for the detection of relative movements of two objects with four measuring cells as vertical measuring device for the detection of a relative movement perpendicular to an imaginary plane, with the measuring cells being arranged in such a manner that t... | 08/16/2005 |
| 6915710 | Method and apparatus for correcting attenuation in an optical torque sensor An optical torque sensor comprises a radiation source emitting radiation of at least one wavelength. At least one sensor senses the emitted radiation and generates at least one intensity signal indicative of the intensity of the emitted radiation. At least one signa... | 07/12/2005 |
| 6907794 | Torque measuring apparatus for rotating body A torque measuring apparatus includes a rotor having a hollow body portion formed between a drive-side flange portion and a load-side flange portion. Light emitting elements are disposed on a periphery of the rotor, for emitting optical signals based on an output fr... | 06/21/2005 |
| 6901815 | Engine torque sensor An optical sensing system is used to measure engine torque. A pair of patterns are formed on a driveshaft between a transmission and axle differential. The patterns are spaced apart from one another by a predetermined distance and are formed about the circumference ... | 06/07/2005 |
| 6895827 | Torque measuring device assuring timely maintenance work A torque measuring device for a rotating body comprises: a rotary section composed of first and second flanges to be joined respectively to a driving shaft and a driven shaft, and a hollow cylinder having the first and second flanges formed respectively on both edge... | 05/24/2005 |
| 6817528 | Reflective apparatus and method for optically sensing relative torque employing Moirè fringes Systems and methods analyze the performance of a mechanical system having two identical rotating members therein. Light is directed from two identical light sources to intercept encoded portions of the rotating members. A portion of the light is reflected from the e... | 11/16/2004 |
| 6807870 | Rotary shaft axial elongation measuring method and device A rotary shaft axial elongation measuring method and device enable accurate measuring of rotary shaft axial elongation regardless of the amount of the elongation. Grooves (10, 12), arranged opposite to each other in a turned V shape along the axial direction,... | 10/26/2004 |
| 6745621 | Measuring twist due to torque in a ratating shaft In a reciprocating engine, power strokes of pistons apply torque to a crankshaft causing it to twist proportionally. Datum time moments are established by triggers rotating with, at one end of, the crank shaft and a sensor sensing passing of the triggers. At an oppo... | 06/08/2004 |
