Permanent Magnet Type Patents (Class 324/174)
  • Patent number: 10215592
    Abstract: An electronic apparatus which prevents a moving state of a movable unit such as a display unit from being falsely detected. The movable unit is movable in an opening and closing direction with respect to an apparatus main body. When the movable unit is moved with respect to the apparatus main body, a magnetic sensor in the apparatus main body detects a moving state of the movable unit with respect to the apparatus main body by detecting a magnetic field generated by a magnetic field generating unit provided in the movable unit. A Hard Magnetic Material is placed inside the apparatus main body and at such a location that the magnetic sensor is sandwiched between the Hard Magnetic Material and the movable unit being in a closed state. A Soft Magnetic Material is placed inside the apparatus main body and between the magnetic sensor and the Hard Magnetic Material.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: February 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jun Kamiya
  • Patent number: 10184780
    Abstract: A position sensor for an actuator having a measuring shaft capable of pivoting less than, for example, 360° around a pivot axis. The position sensor can include an angle sensor to detect an actual angular position of the measuring shaft relative to a stationary reference point. The measuring shaft can include a first section extending coaxially to the pivot axis for introducing a pivotal movement to the measuring shaft corresponding to a control movement of an actuator rod, and a second section extending coaxially to the pivot axis to which a measuring shaft-based angle sub-sensor can be attached.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: January 22, 2019
    Assignee: SAMSON AKTIENGESELLSCHAFT
    Inventors: Christian Mellinger, Sven Rausch
  • Patent number: 10180314
    Abstract: An end-sensing sensor assembly for proximity sensing including one or more sensing devices positioned between two axially magnetized ring magnets having like poles facing one another such that the magnetic fields emanating from the two axially magnetized ring magnets define a moveable balanced zone therebetween. The one or more sensing devices may be positioned within the balanced zone or outside the balanced zone, or combinations thereof. The balanced zone shifts in response to the approach of a magnetic, permeable, and/or ferrous material which cause the sensing device to actuate in response to a sufficient shift in the balanced zone. Upon removal or departure of the magnetic, permeable, and/or ferrous material, the balance zone shifts back to the initial position prior to the approach of the magnetic, permeable, and/or ferrous material.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: January 15, 2019
    Assignee: Hermetic Switch, Inc.
    Inventor: David Tyler Posey
  • Patent number: 10175305
    Abstract: Magnetic field sensor having a magnetic field sensor element and at least a band-shaped electrical contact element, in which the at least one contact element has at least one undercut section to fix in spatially form-fitting manner the magnetic field sensor at a support during the at least sectional injection molding process with a plastic material.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: January 8, 2019
    Assignee: ZF Friedrichshafen AG
    Inventor: Thomas Schober
  • Patent number: 10175066
    Abstract: A system for detecting the absolute rotational angle of a shaft rotatable more than one revolution includes a drive wheel connected to the shaft to rotate therewith. The drive wheel includes measurement sectors adjacent to one another in a circumferential direction. First and second driven wheels are engaged to the drive wheel. First and second sensors monitor rotational positions of the driven wheels to thereby detect an absolute rotational angle of the shaft. A third sensor monitors a relative angular position of the shaft in relation to a detected one of the measurement sectors to thereby detect the relative angular position of the shaft within one revolution of the shaft. The detected absolute rotational angle of the shaft is refined with the detected relative angular position of the shaft to thereby generate the absolute rotational angle of the shaft with more precision.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: January 8, 2019
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Martin Deitmerg, Marco Rutkowski, Stefan Garneyer, Christian Schirp, Oliver Maier, Klaus Hirschfeld, Bernd vom Hedt, Sven Kober, Holger Hasselmann, Stefan Schroeder
  • Patent number: 10162019
    Abstract: An apparatus (10) for determining a stray magnetic field in the vicinity of a sensor is described. The apparatus (10) has a multipole permanent magnet (60) with four or more poles and an axis of rotation (70). The multipole permanent magnet (60) produces a magnetic field (65) with magnetic field vectors (67). Two vertical Hall sensors (40a and 40) are so arranged in two positions on a circular path (50) about the axis of rotation, such that the sum of the magnet field vectors (67) measured at the two positions is substantially zero.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: December 25, 2018
    Assignee: TDK-MICRONAS GMBH
    Inventor: Rolf Hakenes
  • Patent number: 10101410
    Abstract: Methods and apparatus for a sensor having non-ratiometric fault trip level setting. In embodiments, a sensor has a sensing element with a fixed gain. A signal processing module receives the fault trip level setting and maintains the fault trip level setting constant during changes in the supply voltage.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: October 16, 2018
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Alexander Latham, Stephen Marshall, Aaron Cook
  • Patent number: 10094888
    Abstract: Systems, methods, and computer-readable media for calibrating the offset of a magnetometer assembly with reduced power are provided. In one embodiment, a method for operating an assembly may include determining a difference between a current signal measurement output component of a first magnetometer sensor and a previous signal measurement output component of the first magnetometer sensor, comparing the determined difference with a current threshold value, and generating an assembly output based on the comparing, where, when the determined difference is greater than the current threshold value, the generating may include providing a first assembly output using a current offset output component of a second magnetometer sensor, and, when the determined difference is less than the current threshold value, the generating may include providing a second assembly output using a previous offset output component of the second magnetometer sensor.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: October 9, 2018
    Assignee: APPLE INC.
    Inventors: Henry H. Yang, Jian Guo
  • Patent number: 10094890
    Abstract: A magnetic sensor includes a board, a magnetoresistance element group including first and second magnetoresistance elements disposed on the board, and a magnet group including a first magnet corresponding to the first magnetoresistance element and a second magnet corresponding to the second magnetoresistance element. This magnetic sensor can have a small size and high accuracy.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: October 9, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kiyotaka Yamada, Kazuhiro Onaka, Noritaka Ichinomiya
  • Patent number: 10082406
    Abstract: A magnetic field detection apparatus has a first magnetic sensor and a bias magnet positioned to face the first magnetic sensor. The bias magnet has a magnetic pole surface that faces the first magnetic sensor and that applies a bias magnetic field to the first magnetic sensor. The first magnetic sensor detects magnetic field in a first direction that is parallel to the magnetic pole surface. The magnetic pole surface of the bias magnet has a plurality of grooves arranged in the first direction.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: September 25, 2018
    Assignee: TDK Corporation
    Inventors: Hiroshi Naganuma, Yohei Hirota, Kunihiro Ueda
  • Patent number: 10060770
    Abstract: A sensor for outputting a sensor signal which is dependent on a variable to be measured, including: —a measuring pickup which is connected electrically to a data line at a connecting point, is housed in a measuring pickup housing and is set up to feed the sensor signal which is dependent on the variable to be measured into the data line, with the result that the sensor signal can be output via the data line, an installation housing which houses the measuring pickup housing and the data line at least at the connecting point and is manufactured from a flexible material, and—a fastening element which is connected fixedly to the installation housing for fastening the installation housing to a sensor holder, wherein the measuring pickup housing; and the fastening element are arranged on two sides of the installation housing which lie opposite one another.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: August 28, 2018
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Manfred Goll, Ulrich Schrader
  • Patent number: 10054465
    Abstract: According to one embodiment, a magnetic sensor attached to a mobile device detects a magnetic field generated from a magnet attached to an object. A magnetic sensor data processing module generates magnetic sensor data based on the magnetic field, where the magnetic sensor data represents a current position of the magnet of the object. An action processing module processes the magnetic sensor data to determine a movement of the object with respect to the mobile device, while the mobile device remains in a relatively steady location and identifies a predetermined action based on the movement of the object. The predetermined action is then performed within the mobile device.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: August 21, 2018
    Inventor: Stephen U. Fedtke
  • Patent number: 10036654
    Abstract: A first measurement of a magnet that rotates is received from a first set of Hall sensors in a first component. A second measurement is received from a second set of Hall sensors in a second component where the first component and the second component are in a plane that is parallel to an axis of rotation associated with the magnet. An angle associated with the magnet is determined based at least in part on the first measurement and the second measurement.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 31, 2018
    Assignee: Kitty Hawk Corporation
    Inventors: Geoffrey Alan Long, Brian Robert Viele
  • Patent number: 9989384
    Abstract: A measurement circuit includes first and second inputs for receiving first and second input signals which vary cyclically with the rotational position of a rotor of an electric motor; a phase detector circuit; and an observer circuit that estimates the frequency and phase of the first and second input signals. The phase detector circuit determines a phase difference between first and second estimated signals with a phase difference dependent on the phase difference indicated by the estimates, the first and second estimated signals varying in quadrature with each other and the first and second input signals by adding a multiplicative combination of the first input signal with the first estimated signal to a multiplicative combination of the second input signal with the second estimated signal to result in a sum signal dependent upon the phase difference, The observer circuit varies the estimates dependent upon the sum signal.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: June 5, 2018
    Assignee: TRW LIMITED
    Inventor: Peter Geoffrey Scotson
  • Patent number: 9868482
    Abstract: A roller of an undercarriage track system for a machine is disclosed. The roller includes a body and a sensed feature. The body is a solid of revolution formed about a roller axis. The body includes a bore surface and a roller contact surface. The bore surface defines a bore extending through the body. The bore surface is a radially inner surface of the body. The roller contact surface is located outward from the bore surface. The sensed feature is located at the body. The sensed feature is configured to rotate with the body and to be detectable by a sensor.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: January 16, 2018
    Assignee: Caterpillar Inc.
    Inventors: Craig Richard Rust, Mark Steven Diekevers
  • Patent number: 9863971
    Abstract: A novel wheel speed sensor that can produce advantageously and inexpensively with a novel structure that can reliably ensure the waterproof property of drawn-out portions of the output wire, regardless of a material of a coating member for coating output wires for a wheel speed sensor.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: January 9, 2018
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Hironobu Yamamoto
  • Patent number: 9852832
    Abstract: A magnetic field sensor, a magnetic assembly, and a method provide circuits and techniques for or measuring one or more displacement angles of a magnet using magnetic field sensing elements. Applications include, but are not limited to, joysticks.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 26, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Ali Husain Yusuf Sirohiwala, James Rice
  • Patent number: 9846090
    Abstract: A magnetic load sensor unit (1) is provided which can detect the magnitude of an axial load applied by a linear motion actuator (14) to a friction pad (22). The magnetic load sensor unit (1) includes a magnetic target (4) which generates a magnetic field, and a magnetic sensor (5) designed to move relative to the magnetic target (4) corresponding to the axial load.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: December 19, 2017
    Assignee: NTN CORPORATION
    Inventors: Toru Takahashi, Makoto Yasui, Yui Masuda
  • Patent number: 9840294
    Abstract: A control device for controlling a bicycle component in accordance with a seat position of a bicycle seat is provided. The control device may comprise a transmitter configured to transmit a signal relating to the seat position of the bicycle seat, and a mounting structure configured to detachably mount the transmitter to at least one of a bicycle seat post, a bicycle frame, and the bicycle seat.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: December 12, 2017
    Assignee: Shimano Inc.
    Inventor: Nobukatsu Hara
  • Patent number: 9823094
    Abstract: The rotation detection device includes: an encoder having to-be-detected patterns cyclically arranged in the circumferential direction; and a sensor configured to detect the to-be-detected patterns to generate pulses. The device further includes a reference pattern storage unit, a phase difference detection unit, and an error correction unit. The reference pattern storage unit measures pitch errors in the to-be-detected patterns prior to operation and stores the pitch errors as a reference pattern Pref. The phase difference detection unit determines a pitch error pattern Pm corresponding to one rotation of the to-be-detected patterns from rotation signals representing a plurality of rotations detected during operation, and performs comparison with a reference pattern Pref to determine a relative phase difference ?. Based on the phase difference ? obtained by the phase difference detection unit, the error correction unit corrects errors included in the rotation signals detected by the sensor.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: November 21, 2017
    Assignee: NTN CORPORATION
    Inventors: Toru Takahashi, Kentaro Nishikawa
  • Patent number: 9816837
    Abstract: A magnetic angle detector (10) includes a detected object (20a) including a plurality of concave and convex parts (21a) formed at a predetermined pitch on an outer peripheral surface, and a detection body (30a) disposed to face an outer peripheral surface of the detected object. The detection body is a polyhedron, and at least two magnetic detection units (34a and 34b) matching a different detected object are arranged on one plane of the polyhedron. The at least two magnetic detection units are arranged rotationally symmetrically around an arbitrary axis of the detection body.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: November 14, 2017
    Assignee: FANUC CORPORATION
    Inventor: Akira Nishioka
  • Patent number: 9812636
    Abstract: An integrated circuit includes a magnetic field sensor and an injection molded magnetic material enclosing at least a portion of the magnetic field sensor.
    Type: Grant
    Filed: November 30, 2013
    Date of Patent: November 7, 2017
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 9810592
    Abstract: The present invention relates to a rotor including a shaft sleeve having a shaft sleeve main body and a stopper formed to protrude outward from an end portion of the shaft sleeve main body; a magnet disposed on an outer circumferential surface of the shaft sleeve and a lower portion thereof is supported by the stopper; and a fixing part which fixes an upper portion of the magnet, and a torque sensor and an electronic power steering system including the same. Due to the above structure, a broken magnet is prevented from deviating even when a magnet is broken.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: November 7, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Chang Hwan Lee
  • Patent number: 9730612
    Abstract: A device for the detection of slippage of magnetic coupling between an implanted medical device having a magnet and an externally applied magnetic field includes at least one external magnet configured to apply the externally applied magnetic field, an induction coil disposed external to the subject and between the at least one external magnet and the implanted medical device, and a detection circuit operatively coupled to the induction coil and configured to detect slippage between the rotational orientation of the magnet of the implanted device and the externally applied magnetic field based at least in part on the varying frequency components of the voltage waveform across the induction coil.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: August 15, 2017
    Assignee: NuVasive Specialized Orthopedics, Inc.
    Inventor: Richard L. Quick
  • Patent number: 9718539
    Abstract: An aircraft landing gear comprising an axle (3) intended to receive a wheel (4) comprising a rim (6) mounted to rotate on the axle (3) by means of at least one rolling bearing (8). The rolling bearing (8) comprises an inner ring (11) mounted around the axle (3) and an outer ring (12) rotationally secured to the rim (6) of the wheel (4). The landing gear further comprising a measurement device (21) intended to perform measurements of at least one operating parameter of the landing gear. The measurement device (21) is incorporated in the rolling bearing (8) by being secured to one of the inner or outer rings of the rolling bearing (8).
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: August 1, 2017
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventors: Joel Zabulon, David Frank
  • Patent number: 9695943
    Abstract: A slinger has a substantially L-shaped cross-section and includes a rotating cylindrical portion and a rotating circular ring portion. An inner circumferential surface of the rotating cylindrical portion is a stepped cylindrical surface in which a large-diameter portion formed at a portion close to the rotating circular ring portion and a small-diameter portion formed in the remainder are continuously connected by a stepped portion. The encoder supported by the rotating circular ring portion is formed by solidifying and securing a molten permanent magnet material in a state that a molding die collides with the stepped portion. An outer diameter of a hub is defined as ?D, an inner diameter of the small-diameter portion in a free state is defined as ?d1, and an inner diameter of the encoder in a free state is defined as ?d2, a relationship of ?d1??d2<?D is satisfied.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: July 4, 2017
    Assignee: NSK LTD.
    Inventor: Meiji Kato
  • Patent number: 9674323
    Abstract: A multi-functional portable device that connects to and communicates with one or more modular units designed to provide different functionality. The multi-functional portable device of the present invention may communicate with a user computing device. The multi-functional portable device may be employed in various methods and systems used for interacting with and acquiring information from the surrounding environment.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: June 6, 2017
    Assignee: VARIABLE, INC.
    Inventors: George Yu, Wade Chester Gasior
  • Patent number: 9667494
    Abstract: A tool for forwarding plane support in a distributed system. The tool receives, by one or more computer processors, one or more messages. The tool determines, by one or more computer processors, a distribution scope for the one or more messages. The tool determines, by one or more computer processors, a destination endpoint ID for the one or more messages. The tool sends, by one or more computer processors, the one or more messages to one or more forwarding plane agents.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: May 30, 2017
    Assignee: International Business Machines Corporation
    Inventors: Ashok N. Chippa, Ioana M. Costea, Vijoy A. Pandey, Daljeet Singh, Ethan M. Spiegel
  • Patent number: 9664234
    Abstract: A power generating bearing assembly comprising a power generating subassembly integrated into a bearing. The power generating subassembly utilizes the relative motion between a bearing inner ring and a bearing outer ring of the bearing to generate electrical power. A sealing system is attached to one of the bearings. The power generating subassembly includes an electrical generator in operational engagement with a magnetically polarized material. The electrical generator is attached to the non-sealing carrying bearing. The magnetically polarized material is integrated into a supported member, which is a unitary section of the seal that extends axially from an end surface of the bearing rings. The relative motion between the rings engages the electrical generator and the magnetically polarized material causing a generator core of the electrical generator to create an electrical current.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: May 30, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Frank Bartl, Joseph Erskine, Sebastian Ziegler, Andreas Clemens Van Der Ham
  • Patent number: 9631947
    Abstract: Provided is a rotation sensor capable of reducing manufacturing costs and improving workability. The rotation sensor includes: a case including: a bottom surface portion; and a side surface portion that defines a hollow internal space in cooperation with the bottom surface portion; a plurality of lead frames respectively having distal ends inserted into the case; a magnetic detection section provided to the distal ends of the plurality of lead frames arranged in parallel; a spacer provided between the plurality of lead frames and the side surface portion so as to be held in contact with an internal wall surface of the side surface portion; and an internal filling resin for filling a space portion of the hollow internal space except for the spacer, the magnetic detection section, and the plurality of lead frames.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: April 25, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Akira Takashima
  • Patent number: 9625277
    Abstract: An ABS encoder arrangement for a driven wheel bearing unit, with a multi-pole ring, a sensor device with a sensor head, and an annular cap element that has an annular wall portion which shields a cap interior against the exterior. The annular wall section extends through an intermediate region lying between the multi-pole ring and an end face of the sensor head. An extension concentric with the axis of rotation of the multi-pole ring and extending axially over a circumferential area of an articulated shaft head is connected to the annular wall section on a side facing away from the multi-pole ring. In the end portion of the extension facing away from the multi-pole ring and extending over the articulated shaft head, the extension forms a circumferential profile that radially stiffens the extension and forms an annular edge which extends into a circumferential groove of the articulated shaft head and forms a channel cross-section open to the outside.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 18, 2017
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Peter Niebling, Roland Langer
  • Patent number: 9618400
    Abstract: In one aspect, a temperature detection circuit includes a first circuit configured to provide a first signal and a comparator circuit configured to provide a warning signal in response to the first signal if a temperature reaches a temperature value. The first signal enables determination of a parameter of a magnetic sensor.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: April 11, 2017
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Benjamin Geiger, Devon Fernandez
  • Patent number: 9607747
    Abstract: A magnetization apparatus for a magnet of a magnetic encoder. The magnetization apparatus is configured to alternately form a positive and a negative magnetization areas by moving a magnetic member along a route penetrating a gap of a magnetization yoke while alternately generating positive and negative magnetic fields in the gap of the magnetization yoke.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: March 28, 2017
    Assignee: Uchiyama Manufacturing Corp.
    Inventor: Masanori Tomioka
  • Patent number: 9574906
    Abstract: The present disclosure provides a magnetic medium, a magnetic encoder, and a method for manufacturing a magnetic medium with high reliability that can obtain the sufficient signal output, while reducing the hysteresis error. The magnetic medium is relatively movable with respect to a magnetic sensor for detecting a magnetic field in a magnetosensitive face.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: February 21, 2017
    Assignee: HITACHI METALS, LTD.
    Inventors: Yasunori Abe, Makoto Kawakami
  • Patent number: 9561848
    Abstract: The present disclosure relates to a method and an apparatus for the contactless measurement of the steering angle of an aircraft landing gear, in particular of a nose landing gear. Furthermore, this present disclosure relates to an aircraft landing gear, in particular a nose landing gear, which allows a contactless measurement of the steering angle.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: February 7, 2017
    Assignee: Lienherr-Aerospace Lindenberg GmbH
    Inventors: Anton Straub, Joerg Meyer, Rainer Fritschi, Michael Kopf
  • Patent number: 9552912
    Abstract: There is provided a magnetic rubber composition comprising a rubber (A), a thermosetting resin (B) and a magnetic powder (C), wherein a mass ratio (A/B) of the rubber (A) to the thermosetting resin (B) is 0.2 to 5, and a mass ratio [C/(A+B)] of the magnetic powder (C) to the total mass of the rubber (A) and the thermosetting resin (B) is 0.5 to 20. It gives a magnetic rubber molded article excellent in flexibility and abrasion resistance, and a magnetic encoder produced therewith.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: January 24, 2017
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Tadashi Kasamoto, Masaya Ocho, Ayaka Yoshimura, Takashi Hirayama
  • Patent number: 9546690
    Abstract: A bearing which includes a bearing ring and rolling elements. The bearing ring includes an outer surface, having a groove around a circumference of the outer surface, wherein the groove is adapted to accommodate a fiber sensor. The bearing further comprises a clamping element, wherein the clamping element retains the fiber sensor with a clamping force acting in a radial direction of the bearing ring such that the fiber sensor intimately engages the bearing ring. Due to the clamping force, relative movement of the fiber sensor can be reduced.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: January 17, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Romain Herdier, Defeng Lang, Hongyu Yang
  • Patent number: 9520871
    Abstract: Methods and apparatus for an integrated circuit that includes a supply voltage transient detection module to activate a hold signal that causes the output to remain in its present state. In one embodiment, the output remains in that state until the supply voltage returns to a normal operating range and the hold signal transitions to an inactive state.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: December 13, 2016
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Jeff Eagen, Devon Fernandez, P. Karl Scheller
  • Patent number: 9476735
    Abstract: A magnetic encoder 1 including a support member 2 attached to a rotating body 12 and a magnet member 3 fixed to the support member 2, the support member 2 and the magnet 4 are not attached to each other using an adhesive but the support member 2 and the plastic magnet 4 are joined together by molding shrinkage or wrap-around form of the magnet 4, and the material for the magnet 4 is selected such that the value of the ratio ((?p??m)/?c) of a difference (?p??m) between flowing-direction linear expansion coefficient (?p) of the magnet 4 and linear expansion coefficient (?m) of the support member 2, to tensile breaking strain (?c) of the material for the magnet 4 is equal to or less than a value beginning at a threshold (Nth) based on a prescribed value of cycle member at thermal shock destructive test.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: October 25, 2016
    Assignee: NAKANISHI METAL WORKS CO., LTD.
    Inventor: Yoshihiro Ito
  • Patent number: 9475469
    Abstract: An electric brake system includes a linear motion mechanism for converting the rotation of a rotary shaft to a linear motion of an outer ring member, and configured such that the friction pad is pressed against the brake disk by the outer ring member. The brake system further includes a reaction force receiving member adapted to receive an axially rearward reaction force generated when the friction pad is moved axially forwardly and pressed against the brake disk, and a stationary member provided axially rearward of the reaction force receiving member. A magnetic pole row is mounted to the reaction force receiving member, while the magnetic sensor is mounted to the stationary member.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: October 25, 2016
    Assignee: NTN CORPORATION
    Inventors: Toru Takahashi, Yui Masuda
  • Patent number: 9472862
    Abstract: An apparatus and method are disclosed that may include a contact pin; and a plurality of loops of conductive wire, coated with insulation material, disposed in proximity to the contact pin, wherein along at least one portion of the conductive wire, at least one edge of the contact pin extends through the insulation material and thereby forms conductive electrical contact with the conductive wire.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: October 18, 2016
    Inventor: Anthony Freakes
  • Patent number: 9464671
    Abstract: The invention relates to a bearing (10) including an inner ring (12), an outer ring (11), and rolling bodies positioned between the inner and outer rings, one of the rings being rotary and the other not, the bearing further including: a first module (20) including at least one set of sensor(s) suitable for performing successive measurements of at least one parameter representative of the vibrations within the bearing; and a second module (20) suitable for determining a frequency representation of the signal corresponding to the successive measurements, and for obtaining a set of elements(s) representative of the frequency representation based on that frequency representation, so as to compare at least one representative element of the set with a corresponding reference element and identify a malfunction based on that comparison (10).
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 11, 2016
    Assignee: SKF AEROSPACE FRANCE S.A.S.
    Inventor: Yoann Hebrard
  • Patent number: 9377333
    Abstract: A turbine flow meter housing is provided for hot oil trucks and similar applications. The ends of the housing are configured with external threads and flat end faces with embedded O-rings for connection to the inlet and outlet pipes with hammer unions. Because of the flat end face style hammer union connections, the housing and turbine assembly can be removed for service and cleaning using only a hammer and without having to remove the inlet and outlet pipes. The housing is sized for use with 2-inch pipes and has an overall length of only 6.167 inches yet maintains a minimum crush zone of 0.157 inches on each end to prevent deformation when the hammer unions are tightened.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: June 28, 2016
    Inventors: Lloyd A. Webb, Trinten S. Bennett
  • Patent number: 9366548
    Abstract: The embodiments described herein include systems with a variable reluctance sensor (VRS) interface and methods of their operation that may reduce the probability of erroneous transitions in a resulting generated detect signal. As such, the VRS interface can improve the accuracy of position and/or motion determinations, and thus can improve the performance of a wide variety of devices that use variable reluctance sensors. In one embodiment the VRS interface uses a comparator with hysteresis to generate a trailing edge signal. In another embodiment the VRS interface uses bias voltages to reduce the probability of erroneous transitions in a trailing edge signal. In either case the VRS interface can prevent erroneous transitions in the detect signal and thus may improve the performance and accuracy of the system.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: June 14, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: William E. Edwards, Mike R. Garrard
  • Patent number: 9310227
    Abstract: Method for operating a multi-channel rotary encoder comprising at least one printed circuit board on which one or a plurality of functional units (1, 1a, 1b, 1c, 2, 3, 4) are arranged as integrated components and are interconnected, at least one position transducer (6, 7) generating absolute and incremental measurement values which are each fed to a control unit (5) by means of at least one channel (37, 38), the control unit being disposed as a management and safety monitoring unit and controlling a downstream-connected machine, wherein the rotary encoder consists of at least three functional units (1, 2, 3), that the position transducer (6) is arranged in a first functional unit (1) and generates absolute location-position values (9) in this functional unit (1), which are fed by a second functional unit (2), which is connected as an interface, as first secure data (39) by means of the first secure channel (37) to the control unit (5), and that the position transducer (6) feeds its incremental measurement val
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: April 12, 2016
    Assignee: HENGSTLER GMBH
    Inventors: Johann Buecher, Uwe Grigo, Wolfgang Klaiber, Martin Linden
  • Patent number: 9310392
    Abstract: A wheel-speed sensor mounting device may be provided. The wheel-speed sensor mounting device includes a reducer case having a first mounting hole, a mounting shell mounted within the first mounting hole and having a first end extending into the reducer case and a second end, a wheel-speed sensor mounted within the mounting shell and having a first end extending out of the first end of the mounting shell and opposing to a sensing metal ring mounted in the reducer case and a second end having a lead-out wire, and a sealing member for sealing the second end of the mounting shell. The lead-out wire passes through the sealing member and extends out of the reducer case.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: April 12, 2016
    Assignees: BYD Company Limited, Shenzhen BYD Auto R&D Company Limited
    Inventors: Hongming Pan, Hongmei Yuan
  • Patent number: 9244089
    Abstract: A rotation detecting unit is adapted for a rotatable body. The rotation detecting unit includes a rotation detecting part, a signal transmission member, and a main body part. The rotation detecting part detects a rotational state of the rotatable body and outputs a rotation detection signal. The signal transmission member is electrically connected to the rotation detecting part to transmit the rotation detection signal to an external device. The main body part holds at least a part of the signal transmission member and the rotation detecting part. The main body part is integrally molded from thermosetting resin including a joined part obtained as a result of joining together a terminal of the rotation detecting part and the signal transmission member, the part of the signal transmission member, and the rotation detecting part. The main body part includes a recess at a region corresponding to the rotation detecting part.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: January 26, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Tsuge, Mitsuru Takasaki
  • Patent number: 9233602
    Abstract: A drive unit, for an electric vehicle, comprising an electric machine that can be arranged in the area of an end of a vehicle axle of the electric vehicle and also a transmission unit, which co-operates with the electric machine, for driving a wheel of the electric vehicle. The electric machine and the transmission unit can be arranged adjacent to the wheel. The electric machine is designed so that the electric machine can be arranged adjacent to a wheel at either of the two ends of the vehicle axle in the drive unit for driving the wheel concerned. The invention also concerns a vehicle axle incorporating the drive unit.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: January 12, 2016
    Assignee: ZF Friedrichshafen AG
    Inventors: Ulrich Mair, Stephan Pollmeyer, Martin Munster
  • Patent number: 9231586
    Abstract: The invention relates, in particular, to an inductive proximity or distance sensor. The invention proposes that a core 9 of an inductive sensor unit 5 of the proximity sensor 1, which projects into a coil carrier 7, have a rectangular cross-sectional profile.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: January 5, 2016
    Assignee: DIEHL AEROSPACE GMBH
    Inventors: Lothar Trunk, Alan Lowell Houp
  • Patent number: 9121729
    Abstract: A rotation angle calculation unit includes a first rotation angle calculation portion, a second rotation angle calculation portion, a third rotation angle calculation portion, an abnormality monitoring portion, and a final rotation angle calculation portion. The abnormality monitoring portion determines, based on a first output signal, a second output signal, and a third output signal, whether the first to third output signals are each normal or abnormal. The final rotation angle calculation portion calculates a final rotation angle based on the final determination result obtained by the abnormality monitoring portion and the first to third rotation angles calculated by the first to third rotation angle calculation portions, respectively.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: September 1, 2015
    Assignee: JTEKT CORPORATION
    Inventor: Takeshi Ueda