Using Magnetic Flux Patents (Class 188/267)
  • Patent number: 10736375
    Abstract: There have been many types of sports shoes varying in design and material. The market-leading sports shoes are Nike and Asics. Nike is famous for its patented Air Max technology and Asics for its unique liquid cushioning element technology. These are excellent shoes in its own category. Yet, sports players are also looking for a shoe that can switch between the hi-rebound high performance sports mode and soft-cushioned regular mode conveniently. Our new design of the shoe sole tackles this task with a unique approach. We design the shoe sole into three zones according to its dynamic feature and fill the corresponding zones with different foaming material and an interchangeable compact MagLev module. This new design meets the challenge and opens up a new way for shoe manufacturing.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: August 11, 2020
    Inventors: Kang Yao, Nan An
  • Patent number: 10718689
    Abstract: This disclosure relates to modeling and visualization of vibration mechanics in residual space, and includes systems and methods for vibrational analysis. In one embodiment, a method includes acquiring, by at least one sensor, vibrational data and an operational mode of rotating equipment. The method may then proceed with determining, by an equipment controller communicatively coupled to the sensor, at least one vibrational vector based on the vibrational data. The method may determine, by the equipment controller and based on a model, an expected vibrational vector for the operational mode. The method may calculate, by the equipment controller, a residual vector as a difference between the vibrational vector and the expected vector. The method may also determine, by the equipment controller, at least one abnormality associated with the rotating equipment based on the residual vector.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: July 21, 2020
    Assignee: General Electric Company
    Inventors: Devang Jagdish Gandhi, Christopher Schreiner, Donald Scott Doan
  • Patent number: 10711501
    Abstract: An active anti-flutter system is provided for a motor vehicle. That active anti-flutter system includes an electromagnet on a first component, a ferromagnetic target on a second component and a controller. The controller is configured to energize the electromagnet to generate a magnetic flux that attracts the ferromagnetic target toward the electromagnet thereby reducing vibration of one of the first component and the second component. A method of reducing flutter of a closure panel on a motor vehicle is also disclosed.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: July 14, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Shunmugam Baskar, Michael J. Gardynik, Venkatasamy Veluchamy, Christina Dung Nguyen
  • Patent number: 10662031
    Abstract: A roller guide for an elevator car includes at least one roller rotatably mounted on an axis. The roller guide further includes a support element for supporting the axis, and at least one braking element for the roller for damping vertical oscillations of the elevator car. The brake element is a magneto-rheological fluid.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: May 26, 2020
    Assignee: INVENTIO AG
    Inventor: Valerio Villa
  • Patent number: 10655698
    Abstract: A vibration damping device for a vehicle includes a base connected to an engine, an inertial mass, including at least a portion that includes a permanent magnet, movably mounted over the base, an actuator including an electromagnet fixedly mounted on the base to vibrate the inertial mass based on attractive and repulsive forces which alternately act between the inertial mass and the electromagnet, and a controller that regulates a current, which is applied to the electromagnet, such that vibration of the engine is dampened by vibration of the inertial mass.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: May 19, 2020
    Inventors: Jae Kwon Lee, Kwang Hwa Bai, Hae Won Kim
  • Patent number: 10655699
    Abstract: A simple self-tuned mass damper is hereby proposed for a broadened frequency band and which can be adapted to large and expensive structures as well as small and inexpensive structures alike. The novel self-tuned mass damper includes an auxiliary mass and a non-linear suspension, which is configured to connect the auxiliary mass to a vibrating structure. The mass of the auxiliary mass and the stiffness of the non-linear suspension are selected such that the natural frequency is at least 6 Hz and that the amplitude of the relative displacement of the auxiliary mass in respect to the vibrating structure is at most 12 mm.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 19, 2020
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Jarkko Keinänen, Kalle Vehviläinen
  • Patent number: 10633781
    Abstract: A vibration detection device of washing machine comprises a suspender, a damping spring, a sleeve, a bottom cover and an electromagnetic sensing device. The electromagnetic sensing device comprises an electromagnetic coil and a magnet. The upper end of the suspender is connected with a casing of the washing machine, and the sleeve sleeves the lower part of the suspender in a slidable manner. The damping spring is arranged in the sleeve and at least have two damping springs, and the damping springs have different elastic coefficients and are connected in series. The magnet is connected with the suspender, and the bottom cover is fixedly arranged at the bottom of the sleeve. The electromagnetic coil and the bottom cover are relatively fixed.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: April 28, 2020
    Inventors: Peishi Lv, Lin Yang, Yun Tian, Gangjin Zhang, Mingyan Shao
  • Patent number: 10525813
    Abstract: A hydraulic bearing has a cylindrical main housing, a load-bearing spring enclosed by the main housing, a work chamber, which is at least partially enclosed by the load-bearing spring, with a work chamber volume filled with hydraulic fluid. The hydraulic bearing further includes a control diaphragm, which is configured to change the work chamber volume, and an actuator. The actuator is coupled to the control diaphragm for deflecting the same. The hydraulic bearing also includes an equalization chamber and a throttle duct hydraulically interconnecting the work chamber and the equalization chamber, and a cylindrical chamber housing is arranged with a first end face on an outer casing side section of the main housing, wherein the equalization chamber is formed by at least a part of an interior of the chamber housing.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: January 7, 2020
    Assignee: ContiTech Vibration Control GmbH
    Inventors: Robert Genderjahn, Peter Marienfeld
  • Patent number: 10481631
    Abstract: Apparatus and method for operating vehicles and other technical equipment by way of a haptic operating device having a rotating unit. Selectable menu items are displayed on a display unit, and a menu item being selected by rotating the rotating unit. The rotating unit latches at a number of haptically perceptible latching points during rotation. The number and rotational position of the haptically perceptible latching points is dynamically changed.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 19, 2019
    Assignee: INVENTUS Engineering GmbH
    Inventor: Stefan Battlogg
  • Patent number: 10427487
    Abstract: A characteristic is set to a first transmission force characteristic. A sensitivity is set to a first sensitivity. The maximum value of the square of a product of a value representing the first transmission force characteristic and a value representing the first sensitivity in a predetermined frequency range preset so as to include a frequency at which the value representing the first transmission force characteristic takes a peak value is set to an evaluation indication value. A complex spring constant in the vehicle longitudinal direction of the rear wheel suspension is set so that the evaluation indication value takes the minimum value out of values in a variable range of the evaluation indication value.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: October 1, 2019
    Inventor: Tsuyoshi Yoshimi
  • Patent number: 10414435
    Abstract: An apparatus for attenuating vibration transmission between first and second structures includes a rod extending entirely through, and being mechanically connected to, both of the first and second structures. The rod defines a central longitudinal axis. A piezoelectric sensor senses vibrations in at least one of the first and second structures and responsively generates a voltage. The piezoelectric sensor is disposed entirely longitudinally between the first and second structures. A piezoelectric actuator actively attenuates the vibrations sensed by the piezoelectric sensor. The piezoelectric actuator is at least partially driven responsive to voltage generated by the piezoelectric sensor. The piezoelectric actuator is disposed entirely longitudinally between the first and second structures. At least one of the piezoelectric sensor and the piezoelectric actuator has a throughhole through which the rod entirely extends.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 17, 2019
    Inventors: Alan Dale Parker, Timothy C. Cummings
  • Patent number: 10414234
    Abstract: A shock absorber includes a first tube defining a first chamber and a piston head movably disposed within the first chamber. A hollow piston rod extends from the piston head. The hollow piston rod defines a rod chamber, and a tuned vibration absorber is disposed within the rod chamber of the hollow piston rod.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 17, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael E. McGuire, Robert P. Marble, Christopher A. Stirlen
  • Patent number: 10406883
    Abstract: A spring for a suspension is described. The spring includes: a spring chamber divided into at least a primary portion and a secondary portion, and a fluid flow path coupled with and between the primary portion and the secondary portion. The fluid flow path includes a bypass mechanism, wherein the bypass mechanism is configured for automatically providing resistance within the fluid flow path in response to a compressed condition of the suspension.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 10, 2019
    Assignee: Fox Factory, Inc.
    Inventor: John Marking
  • Patent number: 10379637
    Abstract: In one embodiment, the present invention provides an input device with a mechanical wheel which includes a touch sensor. In one embodiment, the wheel is a thumbwheel that uses a magnetometer to detect rotation of a magnet inside the thumbwheel. The touch sensor in one embodiment is a cylindrical floating electrode which is capacitively coupled to a bridge electrode connected to a sensing circuit. The thumbwheel may be used for horizontal scrolling, zoom and other gestures.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: August 13, 2019
    Assignee: Logitech Europe S.A.
    Inventors: Arnaud Perret-Gentil, Daniel Bonanno, Patrick Edouard Jean Cerisier, Darragh Luttrell, Nicolas Ramond, Jaroslav Jirousek
  • Patent number: 10337134
    Abstract: A laundry device comprises an outer tub, an inner tub, an inner magnetic ring and an outer magnetic ring. One of the inner magnetic ring and the outer magnetic ring is directly or indirectly fixed on a bottom wall of the inner tub and positioned at the outer side of the bottom wall of the inner tub, and the other one is directly or indirectly fixed on a bottom wall of the outer tub and positioned at the inner side of the bottom wall of the outer tub. An upper end face and a lower end face of the inner magnetic ring have the same polarity as the upper end face and the lower end face of the outer magnetic ring so that a radial repulsion between the inner magnetic ring and the outer magnetic ring is used to suppress vibration of the inner tub and/or the outer tub.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: July 2, 2019
    Inventors: Xiang Yin, Fengling Wu, Qiuqi Mou, Chunfeng Lao, Jiangtao Zhang
  • Patent number: 10316832
    Abstract: In one aspect, there is provided a damper control system for a reciprocating pump assembly according to which control signals are sent to electromagnets. In another aspect, there is provided a method of dampening vibrations in a pump drivetrain according to which a beginning of torque variation is detected and at least a portion of the torque variation is negated. In another aspect, signals or data associated with pump characteristics are received from sensors, torque characteristics and damper response voltages per degree of crank angle are calculated, and control signals are sent to electromagnets. In another aspect, a damper system includes a fluid chamber configured to receive a magnetorheological fluid; a flywheel disposed at least partially within the fluid chamber and adapted to be operably coupled to a fluid pump crankshaft; and a magnetic device proximate the flywheel. The magnetic device applies a variable drag force to the flywheel.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: June 11, 2019
    Assignee: S.P.M. Flow Control, Inc.
    Inventor: Joseph H. Byrne
  • Patent number: 10316450
    Abstract: A washing machine comprises: an outer drum; an inner drum rotatably disposed in the outer drum; and a rotation mechanism for driving the inner drum to rotate. A rotation shaft of the rotation mechanism extends upwardly from the bottom of the outer drum to a bottom wall of the inner drum to drive the inner drum to rotate. The washing machine further comprises: at least one pair of magnets including an outer ring-shaped magnet and an inner ring-shaped magnet which is disposed at a radial inner side of the outer ring-shaped magnet and opposite to the outer ring-shaped magnet. The inner ring-shaped magnet is disposed on the rotation shaft, and the outer ring-shaped magnet is disposed at the bottom wall of the inner drum or the outer drum, so that a magnetic force between them can reduce a magnitude of vibration of the inner drum or the outer drum.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: June 11, 2019
    Inventors: Fengling Wu, Chunfeng Lao, Xiang Yin, Qiuqi Mou, Jiangtao Zhang
  • Patent number: 10280663
    Abstract: An exemplary assembly includes a cylinder, a piston, and a lock. The lock is transitionable between an unlocked position that permits extension and retraction of the piston relative to the cylinder, and a locked position that limits retraction of the piston relative to the cylinder. The lock is blocked from transitioning from the locked to the unlocked position when a load supported by the piston exceeds a threshold load. An exemplary method includes transitioning a lock from an unlocked to a locked position. The lock in the unlocked position permits extension and retraction of a piston relative to a cylinder. The lock in the locked position limits retraction of the piston relative to the cylinder. The method further includes holding the lock in the locked position using a load supported by the piston that exceeds a threshold load.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: May 7, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Cynthia Wetzel, Raymond VanPutten, Rich James Cacioppo, Adam Miller, Traian Taropa, Michael Joseph Lee
  • Patent number: 10267373
    Abstract: To solve a problem, for example, in which holding a movable mass becomes difficult because the spring characteristics of a rubber constituting a basis are set low in order to set the characteristic value at a low value. In a first dynamic vibration absorber including a movable mass that is coupled to a vibration damping target member via an MRE as a first elastic member having elastic characteristics variable with a magnetic field, and being capable of varying a vibration characteristic value of the movable mass by controlling the magnetic field, the dynamic vibration absorber has a second elastic member different from the MRE, and the vibration damping target member and the movable mass are elastically-coupled to each other via the second elastic member.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: April 23, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Toshio Inoue
  • Patent number: 10231446
    Abstract: A dual-bearing reel includes a reel unit, a spool shaft, a spool, and a brake device. The spool shaft is rotatably supported by the reel unit. The spool includes a bobbin trunk, a shaft mount and a coupling wall. The bobbin trunk includes an internal space. The shaft mount has a tubular shape, and is penetrated by the spool shaft. The coupling wall couples the bobbin trunk and the shaft mount. The brake device includes at least one magnet disposed in opposition to the coupling wall. The brake device brakes the spool by a magnetic force applied to the coupling wall from the at least one magnet.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: March 19, 2019
    Inventor: Youhei Toake
  • Patent number: 10181781
    Abstract: Magnetic vibration damper includes three coaxial elements: a first coaxial element with first permanent magnets, a second coaxial element with first soft magnets and a third coaxial element with second permanent magnets. The first soft magnets are located between the first permanent magnets and the second permanent magnets in a radial direction. The spacing of the second permanent magnets is larger than the spacing of the first permanent magnets. The damper further includes an energy conversion component, such as conductive layers or coils to convert the mechanical movement of the magnets into heat or electric current.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 15, 2019
    Assignee: MAG SOAR S.L.
    Inventors: José Luis Pérez Díaz, Ignacio Valiente Blanco, Cristian Crisache, Efrén Díez Jiménez
  • Patent number: 10120374
    Abstract: A system for condition monitoring and fault diagnosis includes a data collection function that acquires time histories of selected variables for one or more of the components, a pre-processing function that calculates specified characteristics of the time histories, an analysis function for evaluating the characteristics to produce one or more hypotheses of a condition of the one or more components, and a reasoning function for determining the condition of the one or more components from the one or more hypotheses.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: November 6, 2018
    Assignee: Brooks Automation, Inc.
    Inventors: Martin Hosek, Jay Krishnasamy, Jan Prochazka
  • Patent number: 10086916
    Abstract: A ride height adjustable oil damped air shock boat seat pedestal with selectively lockable swivel capability is shown, which includes a locking pin extending below the seat and moving up and down with the seat as permitted and controlled by the air shock. The locking pin being received by a structure, which limits rotation of the seat.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 2, 2018
    Inventor: Lee Falck
  • Patent number: 10046946
    Abstract: Disclosed a load measurement system (100) includes a compartment (110), a damper (112) and a weight calculation unit (131). The damper (112) is configured to be positioned between the compartment (110) and a platform (121) and to compress at a predetermined rate based on a load of the compartment (110). The weight calculation unit (131) is configured to calculate a weight of the compartment (110) based on the compression of the damper (112).
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: August 14, 2018
    Inventors: Gang Tan, Zhiyong Yao, Xiaofei Guo, Bin Wu
  • Patent number: 10024379
    Abstract: A hydraulic shock absorber having an inner housing portion slidably coupled to an outer housing portion to define a variable size chamber for containing shock absorber fluid. The region where the inner and outer housing portions overlap defines an annulus between adjacent surfaces of the inner and outer housing portions which varies in size in accordance with the extension state of the shock absorber. A dynamic seal is coupled to a surface of the shock absorber within the annulus for confining shock absorber fluid to the chamber. The shock absorber fluid is an electro-rheological or magneto-rheological fluid and the shock absorber includes a device for generating a magnetic or electric control field within the chamber at a region adjacent dynamic seal in order to increase the viscosity of the shock absorber fluid adjacent to the dynamic seal to inhibit passage of the shock absorber fluid beyond the dynamic seal.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: July 17, 2018
    Assignee: Safran Landing Systems UK LTD
    Inventors: Robert Kyle Schmidt, Matthew Baxter
  • Patent number: 10020708
    Abstract: An electrical rotating machine includes a stator (11) provided with teeth (14) around which a group of coils (19) is wound, an annular interconnector (22) resting on a stator lamination stack (11) provided with tongues (36) to which ends (191, 192) of the coils (19) are welded for the formation of phases (U, V, W) of the electrical machine, and a closure flange (74) for closing a housing (70) for receiving the stator (11). The machine also includes at least one damper (83) consisting of a deformable material, configured to be mounted so as to be compressed between the interconnector (22) and the closure flange (74) of the machine. The invention also relates to the corresponding damper.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: July 10, 2018
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Michel Le Douarin, Didier Selosse, Michael Hanquez, Hugues Gervais, Svetislav Jugovic, Frederic Palleschi, Mathieu Alapetite
  • Patent number: 9999210
    Abstract: A device has a spool rotatable about an axis in a reel, and a braking structure that effects a braking force against rotation of the spool, the braking force being adjustable by changing a proximity of the braking structure relative to the spool. The device includes at least one tap in a fixed relationship with respect to the braking structure, and a brake dial accessible outside the reel and providing a threaded portion that accepts the at least one tap, the brake dial being rotatable to change the proximity of the braking structure relative to the spool by movement of the tap.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 19, 2018
    Assignee: W.C. Bradley/Zebco Holdings, Inc.
    Inventor: Hyunkyu Kim
  • Patent number: 9955678
    Abstract: A spool braking device brakes the rotation of a spool rotatably supported by a reel body. The spool, which is a conductor that is rotated in conjunction with the spool. The magnet includes an N-pole and an S-pole on a surface that faces the rotating surface of the spool. The retaining member, the support ring, and the engagement member form a magnetic flux change rate variable mechanism. The magnetic flux change rate variable mechanism varies the change rate of the flux in the rotational circumferential direction that is affected by the magnet, at a prescribed rotating surface of the spool having a prescribed unit width in the rotational axis direction, with the rotation of the spool.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: May 1, 2018
    Assignee: Shimano Inc.
    Inventor: Satoshi Ikebukuro
  • Patent number: 9945382
    Abstract: A pump drive for an extracorporeal blood pumping system including an adjustable drive magnet. The pump drive may be coupled to a blood pump which includes a pump impeller. The pump drive may include a stepper motor for dynamically adjusting the position of the drive magnet. The position of the drive magnet may be varied to vary the distance between the drive magnet and an impeller magnet of the pump impeller. Adjusting the position of the drive magnet may include dynamically adjusting the drive magnet and may include axially moving the drive magnet to thereby vary a magnetic attraction force between the drive magnet and the impeller magnet which may thereby minimize forces acting on one or more bearings of a pump impeller.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: April 17, 2018
    Assignee: Medtronic, Inc.
    Inventors: Roger A. Naidyhorski, Brian J. Steffens, Craig D. Petersen
  • Patent number: 9876291
    Abstract: A method for the tension proof closing of the end of an energy cable in which an energy cable is used whose center axis containing the electrical transmission elements is surrounded by a tension proof reinforcement of metal wires. Initially, the reinforcement at the end of the energy cable is removed over a predetermined length. Subsequently, a pipe piece of metal, which tightly surrounds the end of the remaining reinforcement, is placed onto the end of the remaining reinforcement. Finally, a cup shaped tubular elongated sleeve of metal is pushed onto the end of the energy cable and is connected in a tension proof manner to the pipe piece which has, at its free end facing away from the pipe piece, a device suitable for mounting a tension element. In addition, a device manufactured by the method is proposed.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: January 23, 2018
    Assignee: NEXANS
    Inventors: Volker Aue, Eduard Schramm
  • Patent number: 9871433
    Abstract: A linear actuator includes a first tube and a second tube inserted into the first tube to be free to slide. The first tube includes an outer tube and a cap provided detachably on an end portion of the outer tube, while the second tube includes a base portion and an inner tube provided detachably on the base portion and inserted into the outer tube to be free to slide. A first sliding member that slides against an outer periphery of the inner tube is provided on an inner periphery of one end of the outer tube. A second sliding member that slides against an inner periphery of the outer tube is provided on an outer periphery of an end portion of the inner tube corresponding to the other end of the outer tube.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: January 16, 2018
    Assignee: KYB Corporation
    Inventors: Kousuke Satou, Takashi Kakiuchi
  • Patent number: 9841078
    Abstract: An energy absorber is controlled in an overload event to absorb potentially damaging energy. The energy absorber acts between a receiving unit for receiving objects for transporting and a carrier device that connects to a transporter. An absorber force can be influenced by an electrically controlled magnetic field unit. Measurement values of loads acting on the loading unit are captured sequentially and an overload event is determined if a measure derived from the measurement values exceeds a predetermined threshold value. After the onset of an overload event a prognosticated load curve of the loading unit is assessed from a multitude of measurement values captured from the onset of the overload event. A planned power flow curve for the magnetic field unit is determined and the load curve is damped time-dependent so that a planned load curve ensues which remains beneath a predetermined load limit.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: December 12, 2017
    Assignee: General Dynamics European Land Systems-Mowag GmbH
    Inventors: Stefan Battlogg, Markus Mayer
  • Patent number: 9835221
    Abstract: An energy absorber reduces an excessive load between an object and an assembly in an overload event. The energy absorber includes an absorber cylinder and a piston device with an absorber piston and a piston rod. A first chamber of an absorber chamber is filled with a field-sensitive absorber fluid. The piston has an absorber valve with an absorber duct extending in an axial direction and being subject to a selective field of a field generating device. A ratio of the outer diameter of the piston rod to an outer diameter of the absorber piston is greater than 0.6 and the first chamber extends in a space around the piston rod. During the relative motion of the fastener and the holding device the field-sensitive absorber fluid is urged through the damping duct of the absorber piston.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: December 5, 2017
    Assignee: General Dynamics European Land Systems-Mowag GmbH
    Inventors: Stefan Battlogg, Juergen Poesel
  • Patent number: 9829059
    Abstract: A single-degree-of-freedom magnetic vibration isolation device belongs to vibration isolation devices and solves the following problems: the existing active and passive combined vibration reduction system is complex in structure, needs energy supply, and has low reliability.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: November 28, 2017
    Assignee: Huazhong University of Science and Technology
    Inventors: Xuedong Chen, Zilong Li
  • Patent number: 9783388
    Abstract: This invention includes an annular hysteresis brake (34) having one end fixed to a stationary frame (11), a support shaft (6) extending through a hollow portion of the hysteresis brake (34), and a spindle part (4) rotatably supported by the support shaft (6). The hysteresis brake (34) includes a yoke (36), a cylindrical hysteresis member (46) inserted into an annular space (41) of the yoke (36), and a hub (37) for rotatably supporting the hysteresis member (46). The spindle part (4) is supported by the support shaft (6) such that the spindle part (4) is restricted from moving toward the hysteresis brake (34) by a sleeve (15). The spindle part (4) and hub (37) are coupled with each other so as to rotate together via pins (21). This invention can simplify the structure while preventing damage to the hysteresis brake, thereby reducing the manufacturing cost of a thread-supplying spindle unit.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: October 10, 2017
    Assignee: OGURA CLUTCH CO., LTD.
    Inventors: Yoshiyuki Matsumoto, Nobuyuki Shutou
  • Patent number: 9771150
    Abstract: A tunable vibration isolator with active tuning elements having a housing, fluid chamber, and at least one tuning port. A piston is resiliently disposed within the housing. A vibration isolation fluid is disposed within the fluid chambers and the tuning ports. The tunable vibration isolator may employ either a solid tuning mass approach or a liquid tuning mass approach. The active vibration elements are preferably solid-state actuators.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: September 26, 2017
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Michael R. Smith, Frank B. Stamps, Taeoh Lee, David E. Heverly, Jr., Robert J. Pascal
  • Patent number: 9765844
    Abstract: A suspension device interposed between a vehicle body and a wheel, including a magnetic viscous fluid shock absorber in which a magnetic viscous fluid is sealed, a tube member composed of an outer tube connected to the vehicle body side and an inner tube connected to the wheel side and going into/out of the outer tube and accommodating the magnetic viscous fluid shock absorber, a lubricant liquid stored in the tube member, and a seal member closing a space between the inner tube and the magnetic viscous fluid shock absorber and preventing intrusion of the lubricant liquid to the wheel side.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 19, 2017
    Assignee: KYB Corporation
    Inventors: Takahisa Mochizuki, Naoki Ito, Keiji Saito
  • Patent number: 9752641
    Abstract: Provided is a magnetorheological (MR) damper, which includes a cylinder filled with an MR fluid, a piston rod extending to the outside of the cylinder, and a magnetic generator partitioning the inside of the cylinder into a compression chamber and a rebound chamber in a state of being connected to the piston rod and generating an electromagnetic force to the inside, the MR damper including: a magnetic core connected to a lower end of the piston rod; a flux ring connected to an edge of the magnetic core, such that a side surface of the flux ring tightly contacts an inner peripheral surface of the cylinder, the flux ring being formed to vertically penetrate through a main passage between the flux ring and the magnetic core; and a cutaway groove concavely formed at a side surface of the magnetic core and preventing a magnetic force from being unnecessarily formed at a setting portion of the main passage, such that the MR fluid is vertically bypassed during compression and rebound strokes.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: September 5, 2017
    Inventor: Yoon Hyun Lee
  • Patent number: 9739336
    Abstract: A magnetically damped mounting and isolation system with pointing capability. A payload is mounted to an isolator plate, a base plate is mounted to a satellite or other space vehicle, and the isolation system provides damping of all six degrees of freedom of isolator plate motion relative to the base plate. Three bidirectional magnetic dampers are connected between the isolator plate and the base plate and arranged to provide the required amount of temperature-independent damping. The bidirectional magnetic dampers can be connected to the base plate and the isolator plate in different configurations based on desired mass and natural frequency characteristics. Flexures which statically position the isolator plate are also designed to optimize normal modes of vibration. The isolation system may include a motion amplification feature to increase magnetic damping effectiveness, and the isolation system may also include active positioning of the payload relative to the satellite.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: August 22, 2017
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Allen J. Bronowicki
  • Patent number: 9719574
    Abstract: Shock absorber and method for operating a shock absorber for a bicycle wherein a relative motion of a first and a second component interconnected via a damper device is dampened. The damper device includes a controllable damping valve with a field generating device with which a field-sensitive medium can be influenced for influencing a damping force of the damper device by applying a field intensity of the field generating device. A parameter for the current relative speeds of the first and second components is obtained in real time. For damping, a current field intensity to be set is derived in real time by way of the parameter from a characteristic damper curve and the field intensity to be currently set is generated by the field generating device in real time for setting in real time a damping force which results from the predetermined characteristic damper curve at the parameter obtained.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: August 1, 2017
    Assignee: DT Swiss Inc.
    Inventors: Stefan Battlogg, Martin Walthert, Gernot Elsensohn, Juergen Poesel
  • Patent number: 9719736
    Abstract: Embodiments for a cryohead heat transfer coupling as well as methods for extracting heat from an article using these couplings are provided. Couplings employ a component made from a material having a greater mean thermal coefficient of expansion than the mean thermal coefficient of other coupling components and of the article. As a result, differential contraction during cryocooling contributes a shrink fitting of a portion of the coupling resulting in enhanced thermal conduction when cooling and a releasing of the coupling when ambient temperature is restored.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: August 1, 2017
    Inventors: Nadder Pourrahimi, Shahin Pourrahimi
  • Patent number: 9695845
    Abstract: A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, a plurality of fastening bolts for fastening the holder to the cylinder portion, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage formed by penetrating at least one of the plurality of fastening bolts and allowing a working chamber and a discharge port to communicate with each other and leading a working fluid in the working chamber to a discharge port, and an orifice portion provided on the cushion passage and applying resistance to a flow of the working fluid.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: July 4, 2017
    Assignee: KYB Corporation
    Inventor: Hiroshi Funato
  • Patent number: 9687689
    Abstract: A damping device includes a casing structure, a retarding mechanism, a driving mechanism, a restoring mechanism and a resistance mechanism. An accommodating space is formed in the casing structure to accommodate the retarding mechanism, and a through hole and a hollow-out hole are formed at wall surfaces of two opposite sides of the accommodating space respectively. The retarding mechanism has a main shaft passed through out of the through hole, and a retarding shaft acting simultaneously with the main shaft. The driving mechanism has a wire wheel fastened on the main shaft. The restoring mechanism has a restoring wheel fastened on the wire wheel. The resistance mechanism has a metal element fastened on the retarding shaft, and a magnetic part is disposed between the metal element and the hollow-out hole, and an interval is formed between the magnetic part and the metal element.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: June 27, 2017
    Inventor: Shih-Jen Lin
  • Patent number: 9671704
    Abstract: The present invention provides a vibration reduction apparatus which reduces vibration of a first object supported on a base, the apparatus comprising a driving unit arranged between the base and the first object and configured to drive the first object, a reference system including a second object, and a control system including a detector configured to detect a relative distance between the first object and the second object, a compensator configured to control the driving unit such that the relative distance comes close to a target distance, and a high-pass filter configured to attenuate a signal in a predetermined frequency band in a path extending from the detector to the driving unit.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: June 6, 2017
    Inventor: Ryo Nawata
  • Patent number: 9663250
    Abstract: Methods and systems for passively slowing the spin rate of an uncontrolled object in space are presented. A damper mechanism is provided that includes a magnet that is free to rotate in any direction about a central point with respect to a carrier or outer housing. The magnet can be carried within an inner element or sphere, that is in turn mounted within an outer sphere. The inner and outer spheres can be separated by a viscous fluid or other mechanism in which damping can be introduced. The damper mechanism can be associated with an attachment mechanism, that secures the resulting damper or despin system to a target object. A method of neutralizing the magnetic field is also included to enable the system to be launched in a passive state.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 30, 2017
    Inventors: Ian J. Gravseth, Reuben R. Rohrschneider, Robert F. Arentz
  • Patent number: 9664243
    Abstract: A gripper mechanism and a movement mechanism which utilize an electromagnetic actuator which can secure a sufficient thrust force at least at a certain level over a wide range of displacement. The movement mechanism includes a pair of electromagnetic actuators disposed inside a pair of rails and an intermediate actuator provided between the electromagnetic actuators. The electromagnetic actuators function as a gripper mechanism to be gripped by the rails. The electromagnetic actuators each include a displacement amplification mechanism including a magnetic body, and coils provided in the displacement amplification mechanism. A magnetic flux is generated in the magnetic body by passing an electric current through the coils so as to displace the displacement amplification points of the displacement amplification mechanism.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: May 30, 2017
    Assignees: TOKYO WELD CO., LTD.
    Inventors: Toshiro Higuchi, Hiroyuki Nabae, Noritoshi Nakanishi
  • Patent number: 9665012
    Abstract: A method involving obtaining first calibration vibration data relating to vibrations of the lithographic apparatus from a sensor that is part of the lithographic apparatus and obtaining second calibration vibration data, the second calibration vibration data being a component of first parameter data of the lithographic apparatus. A filter is calculated from the first and second calibration vibration data, the filter being such that when applied to the first calibration vibration data, its output correlates closer with the second calibration vibration data. The filter can then be applied to vibration data obtained using the first sensor to obtain an estimate of a vibration component of the first parameter data during the lithographic process.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: May 30, 2017
    Inventor: Edo Maria Hulsebos
  • Patent number: 9631691
    Abstract: An embodiment vibration dampening device includes a stack of permanent magnets having a plurality of cross-sectional areas, wherein the permanent magnets are electrically coupled in series with each other. The device further includes an insulating sheath disposed around the stack of permanent magnets, and a visco-elastic polymer disposed within the sheath and around the stack of permanent magnets.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: April 25, 2017
    Inventor: Ricky David Schultz
  • Patent number: 9574584
    Abstract: A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage leading a working fluid of the working chamber to a supply/discharge port, and an orifice plug fastened to the cushion passage, and the cushion passage includes an internal passage extending in a radial direction of the holder and to which the orifice plug is fastened, and the orifice plug is replaceable through a replacement port formed by penetrating the cylinder tube and communicating with the internal passage.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: February 21, 2017
    Assignee: KYB Corporation
    Inventor: Hiroshi Funato
  • Patent number: 9556927
    Abstract: The current invention is an improved magnetic vibration isolation mount and method that can provide a passive and active reduction in the actual and felt vibration transfer from one object to another. The vibration isolation mount is comprised of a mounting means for a first member, a mounting means for a second member, and a rod and magnetic field apparatus between the two mounts and members. The invention can also be seen as a method for the control of vibration transmission from a first member to a second member via either passive or active means.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: January 31, 2017
    Inventor: Kyle Smith