Magnetic Speed Measuring Or Mechanical Speed Measuring With Ancillary Magnetic Means Or With Ancillary Electrical Means Patents (Class 73/514.39)
  • Patent number: 11560142
    Abstract: A speed sensor for measuring a speed of an object moving relative to the speed sensor, including: a speed sensor housing for providing sliding and/or frictional and/or positively locking insertion into a fixed receptacle, wherein the speed sensor housing houses an injection molded part which is made of plastic and into which at least part of a speed sensor element is injected; wherein the injection molded part has at least one outer recess, on its outer circumferential surface facing an inner face of a wall of the speed sensor housing, wherein an empty outer chamber is formed between each boundary surface of an outer recess and the inner face of the wall of the speed sensor housing, and/or wherein at least one inner recess, which forms an empty inner chamber, is formed inside the injection molded part. Also described are a related driver assistance system and a motor vehicle.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: January 24, 2023
    Assignee: KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH
    Inventors: Andre Kluftinger, Klaus Lechner, Michael Blessing, Guenter Klein
  • Patent number: 11536588
    Abstract: An integrated circuit is provided for use in a sensor system having a plurality of sensing coils arranged in a star configuration coupled to terminals of an integrated circuit, such that a first and a second terminal are connected external to the integrated circuit via a loop including a first and a second sensing coil in the plurality of sensing coils. The integrated circuit includes: sensing circuitry for evaluation of sense signals received from the sensing coils via said terminals; a current source and a current sink coupled to respectively a first and a second of said terminals, such that upon supply of current from the current source a current is established through the loop external to the integrated circuit and a detection signal is generated; and an evaluator for evaluating one of more detection signals to detect failure and/or weakness within said loop.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: December 27, 2022
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Pavel Baros, Michal Olsak
  • Patent number: 11408752
    Abstract: The invention relates to a multi-turn angle measurement device for measuring multiple revolutions of a shaft (4), consisting of a first code carrier (31) with an optical single-turn scanning function (34) for detecting the absolute position of the shaft and a second code carrier for measuring the number of revolutions of the shaft (4). A reduction gear (2) is arranged between the first code carrier (31) and the second code carrier, and the second code carrier consists of a number of permanent magnets (22), the position of which is detected by an assembly of Hall sensors (16a-16b) fixed to the housing. Each of the permanent magnets (22) is embedded into the plastic material of the transmission gears (20) of the reduction gear (2).
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: August 9, 2022
    Assignee: HENGSTLER GMBH
    Inventors: Martin Linden, Kai Klaeger, Thorsten Blust
  • Patent number: 11359512
    Abstract: Cooling a torque probe involves an elongated sleeve extending along a sleeve axis between a first sleeve end and a second sleeve end. The sleeve is mountable about the torque probe to define a flow passage between an inner surface of the sleeve and an outer surface of the torque probe. The flow passage is in fluid communication with a flow passage inlet of the sleeve and with a flow passage outlet of the sleeve spaced apart along the sleeve axis from the flow passage inlet. A cooling fluid is configured to flow into the flow passage via the flow passage inlet, through the flow passage along the outer surface of the torque probe to cool the torque probe, and out of the flow passage via the flow passage outlet.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: June 14, 2022
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Hervé Turcotte, Gabriel Naccache, Adam Logan
  • Patent number: 11002280
    Abstract: An apparatus and method for sensing a rotational parameter of a rotating member of a downhole pumping system. The apparatus is capable of detecting motor rotation and pump operating conditions and includes control systems for methods utilizing the rotational parameters to control the operation of the downhole pumping system.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: May 11, 2021
    Inventors: Adam Esberger, Michael Yuratich, Andrew Jewell
  • Patent number: 10975980
    Abstract: A flyweight system includes a base defining a through-bore for connection to a flyweight governor. The base defines a track therein. A magnet is seated in the track of the base. A tab is mounted to the base, sandwiching the magnet between the base and the tab to retain the magnet in the track.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: April 13, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Glenn C. Lemmers, Jr.
  • Publication number: 20150128696
    Abstract: This invention detects mass and mass motion of external objects by virtue of its action as a gravimeter, gravity gradiometer, and detector of gravitational fields. This invention is for devices which function as accelerometers and gyroscopes for the bodies to which they are attached.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Inventors: Joe Foreman, Armen Gulian, Louis Sica, JR., Vahan R. Nikoghosyan, Shmuel Nussinov, Jeff Tollaksen
  • Publication number: 20150128704
    Abstract: An arrangement is provided for monitoring the rate of rotation of a structural component rotating about its axis and arranged in a motor vehicle in the immediate vicinity of the structural component. The speed sensor (11) is connected through an electrical line to an evaluating unit arranged in the motor vehicle, and the speed sensor (11) is connected together with a temperature sensor (12), which is also connected through an electrical line to an evaluating unit arranged in the motor vehicle, where the two sensors (11, 12) are arranged on a carrier of mechanically stable synthetic material which extends beyond the line.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 14, 2015
    Inventors: Richard Riedel, Dietmar Volkl, Norbert Bock
  • Patent number: 9016802
    Abstract: A bicycle rear hub includes a hub spindle, a drive part, a hub shell and a driving force measuring part. The drive part is rotatably supported on the hub spindle, and configured to receive a driving-force-input member. The hub shell is rotatably supported on the hub spindle and operatively coupled to the drive part for rotation by the drive part on the hub spindle. The driving force measuring part includes a first signal generating mechanism and a second signal generating mechanism. The first signal generating mechanism has a first magnet and a first coil. The second signal generating mechanism has a second magnet and a second coil. The second signal generating mechanism is axially aligned with the first signal generating mechanism in an axial direction of the hub spindle.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: April 28, 2015
    Assignee: Shimano Inc.
    Inventor: Satoshi Kitamura
  • Publication number: 20140345381
    Abstract: A motion rate sensor for detecting the rate of movement of an article, comprising: a housing relative to which, in use, the article moves, a detection unit disposed within the housing, the detection unit including a conversion device adapted for generating detector signals caused by the motion of the article, and processing circuitry adapted for receiving said detector signals and outputting motion signals indicative of the rate of movement of the article. In embodiments, the detector signals are caused by variations in optical or light energy, in magnetic fields or radiation intensity. The variations may be caused by variations on the surface in the article, for example a random or repetitive pattern. An apparatus and method for calibrating the sensor are also disclosed, as are a system and method for determining the speed of motion of an article using the sensor.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 27, 2014
    Inventors: Nigel J. Cronin, Adam Guy
  • Patent number: 8890512
    Abstract: A device for visually indicating a change in the operational state of a proximity sensor. The device includes a transparent housing having a cavity and a magnet device for generating a magnetic field. In addition, a sleeve is attached to the housing. The magnet device is concealed within the sleeve in a first position to indicate a first operational state. When a target is positioned adjacent the sensor end, magnetic attraction occurs between the target and the magnet device due to the magnetic field to cause movement of the magnet device to a second position within the cavity wherein the magnetic field does not act on the proximity sensor to change the operational state from the first operational state to a second operational state. Further, the magnet device is visible in the second position to indicate the second operational state.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: November 18, 2014
    Assignee: Pentair Flow Services AG
    Inventors: Leo Minervini, Kevin Connell
  • Patent number: 8863576
    Abstract: A method for manufacturing a sensor, in particular for recording rotational speed. At least one stamped grid is provided for electrically contacting the sensor, in particular a sensor element of the sensor. In addition, at least one homogenization plate is provided for influencing a magnetic field, the stamped grid and the homogenization plate being connected by at least one holder. The holder fixes the stamped grid and the homogenization plate in place positively and/or non-positively.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: October 21, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Frank Mai, Steffen Waldenmeier, Uwe Katzenwadel, Martin Gerhaeusser
  • Publication number: 20140290365
    Abstract: A MEMS gyro is provided, having a movable portion, a non-movable portion, and a magnetic sensing structure that comprises a magnetic source disposed at the movable portion, a magnetic sensing element positioned at the non-movable portion. The movable portion is capable of moving in response to external angular velocity or an external accelerator such that the magnetic field sensed by the magnetic sensing element is in relation to the movement of the movable portion, therefore, the angular velocity or the accelerator.
    Type: Application
    Filed: April 2, 2013
    Publication date: October 2, 2014
    Inventor: Tao Ju
  • Publication number: 20140260618
    Abstract: A microelectromechanical system (MEMS) accelerometer having separate sense and force-feedback electrodes is disclosed. The use of separate electrodes may in some embodiments increase the dynamic range of such devices. Other possible advantages include, for example, better sensitivity, better noise suppression, and better signal-to-noise ratio. In one embodiment, the accelerometer includes three silicon wafers, fabricated with sensing electrodes forming capacitors in a fully differential capacitive architecture, and with separate force feedback electrodes forming capacitors for force feedback. These electrodes may be isolated on a layer of silicon dioxide. In some embodiments, the accelerometer also includes silicon dioxide layers, piezoelectric structures, getter layers, bonding pads, bonding spacers, and force feedback electrodes, which may apply a restoring force to the proof mass region. MEMS accelerometers with force-feedback electrodes may be used in geophysical surveys, e.g.
    Type: Application
    Filed: February 26, 2014
    Publication date: September 18, 2014
    Applicants: Agency for Science Technology and Research (A*STAR), PGS Geophysical AS
    Inventors: Ilker Ender Ocak, Chengliang Sun, Julius Ming-Lin Tsai, Sanchitha Nirodha Fernando
  • Publication number: 20140260617
    Abstract: A fully differential microelectromechanical system (MEMS) accelerometer configured to measure Z-axis acceleration is disclosed. This may avoid some of the disadvantages in traditional capacitive sensing architectures—for example, less sensitivity, low noise suppression, and low SNR, due to Brownian noise. In one embodiment, the accelerometer comprises three silicon wafers, fabricated with electrodes forming capacitors in a fully differential capacitive architecture. These electrodes may be isolated on a layer of silicon dioxide. In some embodiments, the accelerometer also includes silicon dioxide layers, piezoelectric structures, getter layers, bonding pads, bonding spacers, and force feedback electrodes, which may apply a force to the proof mass region. Fully differential MEMS accelerometers may be used in geophysical surveys, e.g., for seismic sensing or acoustic positioning.
    Type: Application
    Filed: February 26, 2014
    Publication date: September 18, 2014
    Applicants: Agency for Science Technology and Research (A*STAR), PGS Geophysical AS
    Inventors: Ilker Ender Ocak, Chengliang Sun, Julius Ming-Lin Tsai, Sanchitha Nirodha Fernando
  • Patent number: 8833166
    Abstract: A rotation detecting apparatus includes core member having a receiving hole, an inner member that is rotatably supported by the core member, and an outer member that constitutes a wheel bearing device. The rotation detecting apparatus also includes a rotation detecting sensor, an external lead cable that is drawn out from an inner space through the receiving hole in the core member and a sealing member that is secured to an outer peripheral surface of the external lead cable.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: September 16, 2014
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Takahiro Yamashita, Moriyuki Shimizu, Kyungwoo Kim
  • Publication number: 20140232167
    Abstract: A compact monitoring device for monitoring the state of rotation of a disk cutter of a shield tunnel boring machine is integrated into a clamping element for fastening the disk cutter. A sensor module of the monitoring device is arranged in close proximity to the disk cutter but without touching so that a state of rotation of the disk cutter generated by transmitters mounted in the disk cutter is reliably ensured even under the rough environmental conditions prevailing in shield tunnel boring.
    Type: Application
    Filed: September 14, 2012
    Publication date: August 21, 2014
    Applicant: HERRENKNECHT AG
    Inventors: Thomas Josef Edelmann, Christian Himmelsbach
  • Patent number: 8773124
    Abstract: An embodiment of a magnetic-field sensor includes a magnetic-field sensor arrangement and a magnetic body which has, for example, a non-convex cross-sectional area with regard to a cross-sectional plane running through the magnetic body, the magnetic body having an inhomogeneous magnetization.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 8, 2014
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Publication number: 20140182472
    Abstract: The present invention relates to an apparatus for measuring a muzzle velocity of a fired bullet so that the bullet may explode at an accurate location. The muzzle velocity measuring apparatus includes a detector configured to comprise a pair of cores encircled by probe wound coils and installed in two separate positions in an adapter, and to output a muzzle velocity signal based on eddy current signals which are generated by the probe wound coils when a bullet fired from a bullet chamber passes through the adapter, a muzzle velocity calculator configured to calculate a flight speed of the fired bullet based on the muzzle velocity signal; and a transmitter configured to transmit the calculated flight speed to the bullet.
    Type: Application
    Filed: December 19, 2013
    Publication date: July 3, 2014
    Applicant: HANWHA CORPORATION
    Inventors: Kyu-Chae JUNG, De-Rac SON, Jun-Goo SHIN, Sung-Min LEE, Jung-Yun KIM
  • Publication number: 20140165727
    Abstract: A sensor arrangement for a vehicle has a sensor unit and a cable arrangement, wherein the sensor unit comprises a main support and an electronics part which is connected to the main support and has a sensor element, wherein the cable arrangement, which comprises at least one individual wire, can make electrical contact with the electronics part by means of at least one contact-making means. The main support is designed as an open housing which has at least one insertion opening for accommodating the at least one contact-making means and an accommodation pocket for at least partially accommodating the electronics parts, wherein an elastic cap with means for fastening the sensor unit in the vehicle is provided, it being possible for said elastic cap to be pushed at least partially over the main support, and said elastic cap closing off the accommodation pocket in a sealed manner.
    Type: Application
    Filed: January 18, 2012
    Publication date: June 19, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Wolfgang-Michael Mueller, Williamson Sy
  • Publication number: 20140165726
    Abstract: A robust and compact speed sensor assembly that includes a Hall effect sensor with protective circuitry in a compact housing that can be attached to the wheel of a motorcycle in the vicinity of the brake rotor to present the sensor Hall plate in a proper transverse-to-target orientation to detect passing targets, such as the brake rotor mounting bolts or magnets.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: TRAIL TECH, INC.
    Inventors: Jonathan V.S. Boro, Geoffrey Wotton
  • Publication number: 20140109673
    Abstract: An accelerometer device for reducing stress on the sensor resulting from temperature extremes and multiple coefficients of thermal expansion. An exemplary accelerometer device includes upper and lower stators and a reed. The reed includes a support ring and a paddle that is flexibly connected to the support ring. The support ring includes a ring section and at least two mounting devices. The mounting devices are at least partially mechanically isolated from the ring section. The ring section flexibly receives the paddle. The mounting devices include a pad area and a neck area that connect the pad area to the ring section. The neck area includes a width dimension that is narrower than a diameter dimension of the pad area.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Ryan Roehnelt, Michael Jarvis, Galen Magendanz
  • Patent number: 8638182
    Abstract: A power multiplier and method are provided. The power multiplier includes a power multiplying network that is a multiply-connected, velocity inhibiting circuit constructed from a number of lumped-elements. The power multiplier also includes a launching network, and a directional coupler that couples the launching network to the power multiplying network. The power multiplier provides for power multiplication at nominal power generation frequencies such as 50 Hertz, 60 Hertz, and other power frequencies, in a compact circuit.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: January 28, 2014
    Assignee: CPG Technologies, LLC.
    Inventor: James F. Corum
  • Patent number: 8629734
    Abstract: A system for power smoothing in power distribution and methods are provided. In one embodiment, a power multiplying network is provided that comprises a multiply-connected, velocity inhibiting circuit constructed from a number of lumped-elements. The power multiplying network is coupled to a power distribution network. The power multiplying network is configured to store power from and supply power to the power distribution network.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: January 14, 2014
    Assignee: CPG Technologies, LLC
    Inventor: James F. Corum
  • Publication number: 20130145847
    Abstract: A speed sensor target includes a target body, the target body defining a central cavity disposed to receive a shaft of a motor, the target body includes a cylindrical outer surface having a plurality of asymmetrically spaced grooves arranged thereon, and the target body is formed of a magnetic material.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Hamilton Sundstrand Space Systems International, Inc.
    Inventors: Christopher Curtis Martin, Mark E. Gilbert
  • Publication number: 20130061676
    Abstract: A sensing unit for a bicycle speedometer is disclosed. The bicycle speedometer has a meter body and the sensing unit for detecting pedaling and generating a signal related to bicycle pedaling. The sensing unit includes a sensor mounted on a bicycle frame and a fixture for carrying a sensed member. The fixture has a fixing end coupled with a bicycle crank and a coupling arm for carrying the sensed member. The fixture allows positional adjustment of the sensed member with respect to the bicycle crank, thereby facilitating aligning the sensed member with the sensor, so as to ensure proper sensing of the sensor to the sensed member.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 14, 2013
    Applicant: VP COMPONENTS CO., LTD.
    Inventor: Wen-Hwa Lin
  • Patent number: 8365596
    Abstract: An in-plane, closed-loop Micro Electro-Mechanical Systems (MEMS) accelerometer device with improved performance. An example MEMS device includes one or more components for generating a magnetic flux field perpendicular to a major plane of the device. The device includes substrates, a proof mass, spring elements that flexibly connect the proof mass to the substrate and constrain the proof mass to translate within the major plane of the device which corresponds to a major surface of the proof mass, a plurality of conductive traces located at a position on the proof mass proximate the magnetic flux field, a plurality of conductive springs, each of the springs are electrically connected to a corresponding one of the conductive traces, and a plurality of anchor pads connected to the substrate and one of the conductive springs.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: February 5, 2013
    Assignee: Honeywell International Inc.
    Inventors: Paul W. Dwyer, John Strehlow
  • Publication number: 20130000406
    Abstract: A system and method for determining the position of a moveable barrier relative to the fully open position and fully closed position. The invention utilizes in a preferred embodiment a geo-magnetic sensor to determine the extent to which the barrier has traveled from reference position of fully open or fully closed to some intermediate point. A multi-axis sensor provides an output which changes during the barrier's excursion relative to each of the respective axes so that direction or tilt may be readily known in between the closed and open positions. Operation of the gate or barrier may be more efficiently controlled when its precise location between open and closed is known.
    Type: Application
    Filed: July 1, 2011
    Publication date: January 3, 2013
    Inventors: Alex Parsadayan, Wayne C. Hom
  • Patent number: 8307710
    Abstract: An in-plane Micro Electro-Mechanical Systems (MEMS) accelerometer device with improved performance. An example MEMS device includes one or more components for generating a magnetic flux field perpendicular to a major plane. The device also includes a substrate, a proof mass, a hinge element that flexibly connects the proof mass to the substrate, the major plane corresponds to a major surface of the proof mass, a plurality of conductive leads located at a position on the proof mass proximate the magnetic flux field, a plurality of conductive springs, each of the springs are electrically connected to a corresponding one of the conductive leads, and a plurality of anchor pads connected to the substrate and one of the conductive springs. Isolation trenches directly connect to outer edges of the leads that are adjacent to other leads or proof mass material. The leads and springs include a plurality of slots.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: November 13, 2012
    Assignee: Honeywell International Inc.
    Inventors: Paul W. Dwyer, John Strehlow
  • Patent number: 8306775
    Abstract: A rotation speed information detection apparatus, including: a wheel sensor for detecting passage of teeth of a gear provided in association with tires of a vehicle; a number-of-teeth calculation means for calculating the number of teeth of the gear passed per a sampling cycle set in advance; and a wheel speed calculation means for regularly calculating rotation speed information of the tire with using the number of teeth calculated. The number-of-teeth calculation means is configured to use a ratio between time information at the point and a remaining time until the time at which the next sampling cycle is started is reached to thereby calculate the number of remaining teeth to calculate the number of teeth passed during the sampling cycle.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: November 6, 2012
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hajime Fujita, Hiroaki Kawasaki
  • Patent number: 8253412
    Abstract: A rotation detector that can be assembled into a hub of a wheel without breakage of an object to be detected. The rotation detector has a housing (1) having an insertion section (1a) in which an axle (S) is inserted and that is placed between a hub (10a) of a front wheel (10) and a front fork, a magnet (3a) placed in the housing (1) and generating a magnetic field, and a magnetism detection element (3) provided in the housing (1) so as to be able to detect a change in the magnetic field and detecting the change in the magnetic field involved in the rotation of the object (5) to be detected. The object (5) to be detected is formed of a different magnetic material from the hub (10a) and has a portion (5a) to be detected that rotates in synchronous with the hub (10a).
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: August 28, 2012
    Assignee: Nippon Seiki Co., Ltd.
    Inventors: Masaru Iwahashi, Atsushi Kondo
  • Patent number: 8209088
    Abstract: A steering device which includes coded microstructures which are provided on the steering shaft and/or on a device that is connected to the steering shaft in a non-positive manner; a sensor which detects the microstructures and outputs associated measuring signals; and an electronic circuit to which the measuring signals of the sensor are fed, and which outputs electronic signals to control the steering is disclosed.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: June 26, 2012
    Assignees: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V., Fractal-Technologies
    Inventors: Holger Luthje, Rainer Kist, Thomas Reul
  • Publication number: 20120125106
    Abstract: A method for manufacturing a sensor, in particular for recording rotational speed. At least one stamped grid is provided for electrically contacting the sensor, in particular a sensor element of the sensor. In addition, at least one homogenization plate is provided for influencing a magnetic field, the stamped grid and the homogenization plate being connected by at least one holder. The holder fixes the stamped grid and the homogenization plate in place positively and/or non-positively.
    Type: Application
    Filed: July 21, 2010
    Publication date: May 24, 2012
    Inventors: Frank Mai, Steffen Waldenmeier, Uwe Katzenwadel, Martin Gerhaeusser
  • Patent number: 8054063
    Abstract: A motorcycle wheel speed transmission mechanism includes a gear housing affixed to the front fork of a motorcycle and having an outside receptacle and an outside sensor mount, a driven gear mounted inside the gear housing and rotatable with the front wheel of the motorcycle, an output gear mounted in the outside receptacle and meshed with the driven gear, an annular magnet holder mounted on the gear shaft of the output gear and defining therein a plurality of equiangularly spaced magnetic zones, and a speed sensor mounted in the sensor mount and electrically connected to an electronic speedometer of the motorcycle through a transmission line for detecting the revolving speed of the annular magnet holder and transmitting detected data to the electronic speedometer for display.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: November 8, 2011
    Assignee: Panochi Co., Ltd.
    Inventor: Kuo-Hsin Su
  • Publication number: 20110259102
    Abstract: A speed sensor has a static part and a dynamic part arranged concentrically inside the static part. The static part has two permanent magnets and the dynamic part has two further permanent magnets. The magnet is oriented reversely to the further magnets. The magnets are tuned to each other so that gravity on the dynamic part is counteracted by the magnetic force on the dynamic part. As a result, the weight of the dynamic part need not be carried by springs and the dynamic part can move freely so that the full stroke can be used for measuring accelerations and the natural frequency is low. The static part further includes a measuring coil for measuring the displacement of the dynamic part and for the radial positioning of the dynamic part this part is connected to the static part by means of leaf springs.
    Type: Application
    Filed: October 24, 2008
    Publication date: October 27, 2011
    Inventors: Johannes Adrianus Antonius Theodorus Dams, Lambertus Gerardus Cornelis Van Den Broek
  • Patent number: 8030917
    Abstract: A pair of cylindrical magnets with cut away portions has been arranged on both sides of a magnetic sensing element in symmetry of rotation, and a yoke surrounds the magnetic sensing element in contact with outer peripheral surfaces of the pair of the cylindrical magnets with cut away portions. The pair of the cylindrical magnets with cut away portions rotates around an axial center with a concurrent axial displacement along with a rotation of a rotating body. The pair of the cylindrical magnets with cut away portions is arranged in inclined manner against an axis-of-rotation of the magnet. Thereby, the rotation and the displacement in the direction of the axis against the magnetic sensing element of the pair of the cylindrical magnets with cut away portions, and the number of times of rotation can be detected by detecting the size of the magnetic flux density by the magnetic sensing element.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: October 4, 2011
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Shinji Hatanaka, Kenji Takeda, Shigetoshi Fukaya
  • Patent number: 7800359
    Abstract: A first sensor detects a rotational position of a first shaft in a noncontact fashion and generates a first output signal by phase-shifting a reference A.C. signal in accordance with the detected rotational position of the first shaft. A second sensor detects a rotational position of a second shaft in a noncontact fashion and generates a second output signal by phase-shifting the reference A.C. signal in accordance with the detected rotational position of the second shaft. First and second timing signals corresponding to phase shift amounts of the first and second output signals are output via respective output lines. Relative rotational position detection data, representing a rotational difference or amount of torsion between the two shafts, appears in a time difference between the first and second timing signals. A PWM signal, having a pulse width corresponding to a time difference between the first and second timing signals, may be output.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: September 21, 2010
    Assignee: Amiteq Co., Ltd.
    Inventors: Atsutoshi Goto, Kazuya Sakamoto, Hiroshi Sakamoto
  • Patent number: 7772837
    Abstract: A method for coding an output signal of a sensor of an apparatus for determining a rotation angle of a shaft, in particular of a crankshaft of an internal combustion engine, the shaft being joined to a sensor wheel having teeth and tooth gaps having an asymmetrical pitch, and the sensor wheel having associated with it at least one differential sensor encompassing two sensor elements, the differential sensor generating an output signal that is a difference of signals of the two sensor elements, the output signal being a square-wave signal that can assume a first value or a second value. The rotation direction of the shaft, as well as a pitch ratio of a tooth sweeping past the sensor with respect to an adjacent tooth gap, are ascertained from the signals of the two sensor elements, and the rotation direction as well as the pitch are coded as a pulse width coded output signal.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: August 10, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Uwe Kassner
  • Patent number: 7741838
    Abstract: A rotation detecting device that includes an electric power generator having a stator and a rotor, said rotor having a plurality of alternating opposite magnetic poles in a circumferential direction of the rotor, at least a first magnetic sensor mounted on either the stator or a support member for supporting the stator and operable to detect the alternating opposite magnetic poles in the rotor; and an electric power supply circuit for utilizing an electric power generated by the electric power generator as an electric power source for the at least first magnetic sensor.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: June 22, 2010
    Assignee: NTN Corporation
    Inventors: Toru Takahashi, Koichi Okada, Kenichi Iwamoto, Hiroaki Ohba
  • Publication number: 20100043550
    Abstract: A circuit board is mounted on a package via an adhesive agent as an elastic member. A sensor element is stacked in fixed relation onto the circuit board. The sensor element, the circuit board, and the package are wired with bonding wires. A magnetic member made of a ferromagnetic material is disposed between the adhesive agent and the circuit board.
    Type: Application
    Filed: October 27, 2009
    Publication date: February 25, 2010
    Applicant: DENSO CORPORATION
    Inventor: Tameharu Ohta
  • Patent number: 7649349
    Abstract: The invention relates to a method for the manufacture of a switching device with a sensor unit located at a measurement end of a casing sleeve and connected to an electronic circuit located on a support received in the casing sleeve, and with a connection part located at a rear end of the casing sleeve. The method is characterized in that the sensor unit, support and connection part together with a shielding sleeve surrounding the support are assembled to form a dimensionally stable module and the latter is subsequently inserted in the casing sleeve, where it is received in fixing manner. According to a further aspect, the invention relates to a module for a switching device.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: January 19, 2010
    Assignee: Pepperl + Fuchs GmbH
    Inventors: Dierk Schoen, Dionysios Divaris
  • Publication number: 20090277268
    Abstract: [Means for Resolution] A magnetized body is a bonded magnet and is fixed to a support member by integral injection molding. A bend portion extending axially outwardly is formed in an outwardly-directed flange portion of the support member. A come-off preventing concave portion is constituted by the bend portion and the outwardly-directed flange portion. The magnetized body enters this concave portion. Consequently, the magnetized body is prevented from performing relative movement with respect to the support member.
    Type: Application
    Filed: November 1, 2007
    Publication date: November 12, 2009
    Inventor: Yasuhiko Ishii
  • Patent number: 7610998
    Abstract: A disc brake, especially for utility vehicles, which includes a caliper enclosing a brake disc, a pneumatically or electromotively operated tensioning device for tensioning the brake, which is located in the caliper, a magnet wheel rotating with the brake disc, and a stationary sensor for detecting the angle of rotation and the speed of the magnet wheel. The sensor is mounted at a distance from the magnet wheel and at least one line is connected to transmit pulses between the sensor and the magnet wheel. As a result, the sensor can be mounted on the housing protected from the action of heat and other environmental influences and so as to be easily accessible.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: November 3, 2009
    Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Johann Baumgartner, Guenther Gschossmann
  • Patent number: 7609057
    Abstract: To provide a rotation angle detecting device capable of achieving a detection of the angle of rotation at a high speed and with high accuracy and a bearing assembly utilizing such rotation angle detecting device, the rotation angle detecting device includes a magnetic generator (4) arranged on a rotatable member (1) and a plurality of linear magnetic sensor arrays (5A to 5D) arranged on a stationary member (2), so that a zero-crossing-position in a distribution of magnetic field can be detected from respective outputs of the magnetic sensor arrays (5A to 5D) and the rotation angle of the magnetic generator (4) can be detected from the detected zero-crossing-position. While based on the previous zero-crossing-position, the subsequent scanning range of the magnetic sensor arrays (5A to 5D) is set, the zero-crossing-position is detected within this limited scanning range.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: October 27, 2009
    Assignee: NTN Corporation
    Inventor: Toru Takahashi
  • Patent number: 7608985
    Abstract: Piezomagnetic, magneto-strictive, or electro-strictive material particles may also be distributed throughout the structural material of the structural member, which serve to amplify and otherwise enhance the signals from the piezoelectric material particles. The piezoelectric, electro-strictive, magneto-strictive, and/or piezomagnetic material particles may allow the structural member to exhibit an electrical and/or magnetic response to forces on the structural member, such as accelerations. This may allow the structural member to function as a force sensor or an accelerometer. Signals induced by such external forces or accelerations may be taken from the conductive pickups and used for various operations, for example, for arming a warhead of a missile or for triggering passenger safety features such as air bags in automobiles.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: October 27, 2009
    Assignee: Raytheon Company
    Inventor: Terry M. Sanderson
  • Patent number: 7535219
    Abstract: A rotation angle detector includes a rotator, first and second detecting bodies, an auxiliary detecting body, first and second detectors, an auxiliary detector, and a controller. The first detecting body rotates in association with the rotator, and the first detector detects rotation of the first detecting body. The second detecting body rotates in association with the first detecting body at a different speed therefrom, and the second detector detects rotation of the second detecting body. The auxiliary detecting body is engaged with the rotator at a position symmetrical to the first detecting body with respect to a rotation axis of the rotator. The auxiliary detector detects rotation of the auxiliary detecting body. The controller detects a rotation angle of the rotator based on detection signals from the first, second, and auxiliary detectors.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: May 19, 2009
    Assignee: Panasonic Corporation
    Inventors: Shozoh Shiraga, Tamotsu Ohta, Hiromitsu Noda, Mayuko Okada
  • Patent number: 7508197
    Abstract: Angular position detection sensors include a capacitive sensor embodiment and an inductive sensor embodiment. A non-rotating excitation element is electromagnetically coupled to a non-rotating receiver element. The electromagnetic coupling is varied by an electrically passive, rotating element disposed between the non-rotating excitation element and the non-rotating receiver element. Excitation signals applied to the non-rotating excitation element are electromagnetically coupled to the non-rotating receiver element, producing a single output signal directly indicative of the angular position of the rotating element.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: March 24, 2009
    Inventors: Mikhail Rakov, Takashi Shinano
  • Patent number: 7508198
    Abstract: A shaft assembly, includes an elongated shaft and a flywheel mounted to an end of the shaft. An encoder is mounted to the shaft and includes an annular support ring having a radially inwardly extending portion and an axially extending portion extending from a radially outer end of the radially inwardly extending portion. The radially inwardly extending portion defines a spring section which is compressed between the flywheel and the end of the shaft, and an encoder material is disposed on the axially extending portion of the annular support ring.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: March 24, 2009
    Assignee: Freudenberg-NOK General Partnership
    Inventors: Rory S. Pawl, Chad D. Bauer
  • Patent number: 7501811
    Abstract: An encoder 12 changing a characteristic thereof alternately and at equal intervals with respect to circumferential direction is supported by and fixed to the hub 4 concentrically. A detecting portion of a sensor 13 supported by the outer ring 3 is closely opposed to a detected face of the encoder 12. Width dimensions of first, second detecting portions provided at the detected face are changed continuously with respect to direction of operating a load to be detected. In accordance with a change of the load, a pattern of changing an output signal of the sensor 13 is changed. Thus, the load is calculated by observing the pattern. By performing filtering process on a signal expressing the change in the pattern, a variation based on the mounting error or the like is removed.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: March 10, 2009
    Assignee: NSK Ltd.
    Inventor: Koichiro Ono
  • Patent number: RE44582
    Abstract: In a magnetic data processing device, an input part sequentially inputs magnetic data outputted from a two-dimensional or three-dimensional magnetic sensor. The magnetic data is two-dimensional or three-dimensional vector data that is a linear combination of a set of fundamental vectors. The magnetic data processing device stores a plurality of the inputted magnetic data as a data set of statistical population in order to update an old offset of the magnetic data with a new offset. An offset derivation part derives the new offset based on the old offset and the data set of statistical population under a constraint condition that the new offset be obtained as the sum of the old offset and a correction vector.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: November 5, 2013
    Assignee: Yamaha Corporation
    Inventor: Ibuki Handa