Inertia Of Damping Mass Dissipates Motion (e.g., Vibration Damper) Patents (Class 188/378)
  • Patent number: 10518891
    Abstract: A turbine engine assembly is provided. The assembly includes a stationary component, a drive shaft, and a gearbox coupled along the drive shaft, and coupled to the stationary component. The assembly also includes a vibration-reducing mechanism coupled between the stationary component and the gearbox. The vibration-reducing mechanism is configured to isolate a vibratory response of the gearbox from the stationary component.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: December 31, 2019
    Assignee: General Electric Company
    Inventors: Gert Johannes Van Der Merwe, Charles Stanley Orkiszewski
  • Patent number: 10513814
    Abstract: A washing method comprising: suspending and washing laundry in a washing liquid that is supplied to a laundry tub; agitating and washing the laundry with a baffle in the washing liquid at a liquid level that is lower than a liquid level of the washing liquid that is supplied to the laundry tub during the suspending and washing of the laundry; and increasing or decreasing a liquid level of the washing liquid continuously between the suspending and washing of the laundry and the agitating and washing of the laundry while the laundry tub is spinning.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 24, 2019
    Assignee: HAPPY CO., LTD.
    Inventor: Hideo Hashimoto
  • Patent number: 10458513
    Abstract: A damper device according to one embodiment, for example, includes: a rotating member that is rotatable about a rotational axis, the rotating member including a base portion that is plate-like and support portions that is attached to the base portion and extends in an axial direction of the rotational center; and a plurality of weight members disposed partially overlapping each other in the axial direction, the weight members being provided with tracks in respective overlapped parts of the weight members, the tracks guiding the support portion to be swingable with respect to the rotating member, wherein the support portion is shared in the tracks provided in the weight members.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: October 29, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takuya Fujiwara, Makoto Komuro, Suguru Jimbo, Kosuke Kondo, Masahiko Kobayashi
  • Patent number: 10443502
    Abstract: A rotor stage of a gas turbine engine includes a platform from which rotor blades extend. The platform is provided with a circumferentially extending damper ring, the damper ring having an engagement surface that engages with the platform. The damper ring provides damping through slip between the engagement surface and the platform. The damper ring has a hoop stress that results in a load being provided to the platform from the engagement surface. The load can be optimized in order to provide improved damping.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: October 15, 2019
    Assignee: ROLLS-ROYCE plc
    Inventor: Garry Mark Edwards
  • Patent number: 10400603
    Abstract: Mini-disks of gas turbine engines are provided having an axially extending portion extending axially with respect to an axis of the engine, the axially extending portion configured to engage with a hub arm of a compressor of the engine, a radially extending portion extends radially with respect to the axis, the radially extending portion configured to engage with an attachment of a turbine disk of the gas turbine engine, an intermediate portion extending between the axially extending portion and the radially extending portion, and at least one mini-disk connector configured to engage with a portion of the turbine disk of the gas turbine engine to prevent radial movement of the mini-disk during operation.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: September 3, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Raymond S. Hummel, Julian Partyka
  • Patent number: 10386166
    Abstract: A mounting system for mounting an electronic component (2) in a housing (8) comprises a visco-elastic damping element (14, 20) for damping the transmission of vibration from the housing (8) to the component (2) in use, and a support (24, 52) for supporting the component (2) in the housing (8) independently of the damping element (14, 20) whereby the weight of the component (2) is substantially or completely removed from the damping element (14, 20). The support (24, 52) is configured to be selectively releasable from the component (2) such that the component (2) is then supported only by the damping element (14, 20).
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: August 20, 2019
    Assignee: ATLANTIC INERTIAL SYSTEMS LIMITED
    Inventor: Henry James Thomas
  • Patent number: 10378606
    Abstract: A selectively tunable vibration absorber includes a support member having an outer surface, and a selectively tunable element mounted relative to the outer surface of the support member. The selectively tunable element is selectively adjustable to attenuate vibrations in a selected frequency range perceived by the support member in a selected direction. A mass is supported by the selectively tunable element.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 13, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Wallace J. Hill, Mark A. Gehringer
  • Patent number: 10375311
    Abstract: Imaging system comprising an anti-rotation mount and an image detector. The mount may comprise a first frame member having a fixed relation to a set of mutually transverse X, Y, and Z axes, and a second frame member. The second frame member may be connected to the first frame member via a coupling assembly, such that the frame members are not permitted to rotate relative to one another. The mount also may comprise X-axis, Y-axis, and Z-axis coupling structures each formed at least partially by the coupling assembly and each permitting axial motion of the frame members relative to one another only substantially parallel to the X axis, Y axis, and Z axis, respectively. The image detector may be connected to the mount via the second frame member.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: August 6, 2019
    Assignee: FLIR Systems, Inc.
    Inventors: Stephen W. Zeise, Najat Hamri, James H. Weaver, Tylden Van Eeden, Robert D. Anderson
  • Patent number: 10365181
    Abstract: The three-dimensional standard vibrator based on leaf-spring-type decoupling device contains a base set with three single-dimensional vibrators (along X, Y and Z axes, respectively) and a three-dimensional vibration platform. The X axis vibrator is connected with the three-dimensional vibration platform through X axis decoupling device, the Y axis vibrator is connected with the three-dimensional vibration platform through Y axis decoupling device, and the Z axis vibrator is connected with the three-dimensional vibration platform through Z axis decoupling device. The properties of the three-dimensional vibrator are as follow. X axis decoupling device, Y axis decoupling device and Z axis decoupling device are all comprised of supporting-spring units. Each of the supporting-spring units contains a pair of leaf springs mounted parallel with each other and the first and second connecting components mounted on the two edges of the leaf springs.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: July 30, 2019
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Wen He, Xufei Zhang, ShuShi Jia, Jie Zhou
  • Patent number: 10274640
    Abstract: Systems and methods for attenuating vibrations in marine seismic equipment involve a vessel towing a seismic streamer having a plurality of seismic receivers. The seismic streamer is connected to the vessel by a front-end and a damper is coupled to the front-end. A vibration on the front-end is detected and a damper response to the detected vibration on the front-end is then determined. The damper is actively adjusted based on the damper response. The active adjustment dampens vibrations in an axial direction along a lead-in of the front-end and/or vibrations in a direction transverse to an axial direction of the lead-in.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: April 30, 2019
    Assignee: CGG SERVICES SAS
    Inventor: Jason Daniel David Andersen Granholt
  • Patent number: 10208832
    Abstract: A centrifugal pendulum-type vibration absorbing device that includes a support that rotates together with any one of the rotary elements of the damper; and a mass that is supported by the support so as to oscillate freely, wherein the centrifugal pendulum-type vibration absorbing device is designed to have an effective order that is greater by at least a correction amount associated with the hysteresis of the damper than an order of vibration that is generated in the driving device to be damped.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: February 19, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Hiroki Tsuji, Akihiro Nagae, Yoichi Oi, Kazuto Maruyama, Tomoki Inagaki, Hideaki Miyakoshi
  • Patent number: 10189561
    Abstract: A resonator provided with a heavy member comprising a casing fastened a spring blade. The heavy member comprises a set of masses that is movable in translation in said casing along a longitudinal direction. A wormscrew driven by drive means is engaged in a slider nut of said set of masses. The set of masses comprises two masses that are slidable respectively in two cylindrical spaces of the casing. Each mass presents at least two presser means interposed between the mass and the casing, each presser means comprising a groove formed in a circumference of a mass, each presser means comprising at least one resilient member arranged in said groove and a split ring pressed against the casing by said at least one resilient member of the presser means.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 29, 2019
    Assignee: AIRBUS HELICOPTERS
    Inventors: Claude Bocoviz, Valentin Ecard, Guillaume Inquiete, Alain Eberhard, Laurine Tailland
  • Patent number: 10184795
    Abstract: Improved sensing devices are provided for determining the spatial disposition of a movable object. In one aspect, an apparatus for determining a spatial disposition of a movable object comprises: a support base configured to be carried by a movable object; one or more accelerometers coupled to the support base via a first damping element configured to damp motion of the one or more accelerometers; and one or more gyroscopes coupled to the support base via a second damping element configured to damp motion of the one or more gyroscopes, wherein an amount of motion damping provided by the first damping element is greater than an amount of motion damping provided by the second damping element.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: January 22, 2019
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Jian Yu Song, Ren Li Shi, Tao Wang
  • Patent number: 10180176
    Abstract: A turbine torsional vibration damper, in particular a simple torsional vibration damper, for a vehicle, preferably for a drivetrain of a motor vehicle, having a damper part for introducing a torque into the turbine torsional vibration damper and a damper part for extracting the torque from the torsional vibration damper, wherein a pendulum mass flange of a centrifugal pendulum device is rigidly coupled mechanically with a damper part of the turbine torsional vibration damper. A converter or a torque transmission device for a vehicle, in particular for a drivetrain of a motor vehicle, wherein the converter or torque transmission device has a turbine torsional vibration damper according to the invention.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: January 15, 2019
    Assignee: Schaffler Technologies AG & Co. KG
    Inventors: Christian Dinger, Jan Hoffmann, Christian Huegel
  • Patent number: 10174805
    Abstract: A pendulum-type torsional damping device comprises oscillating masses (6, 8, 10) mounted movably on a support (4). Each oscillating mass (6) is intercalated circumferentially between a first adjacent oscillating mass (8) and a second adjacent oscillating mass (10). Each oscillating mass (6) is mounted movably on the support (4) by a rolling contact via a single bearing element (12) associated with that oscillating mass, and a sliding contact between one of terminal edges (18) thereof and a terminal edge (20) of the second adjacent oscillating mass (10), which forms a radial retention edge for that oscillating mass (6). The device allows effective pendulum damping to be obtained with a limited number of bearing elements.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: January 8, 2019
    Assignee: Valeo Embrayages
    Inventor: Roel Verhoog
  • Patent number: 10163433
    Abstract: An automotive active brake noise damping system to actively damp braking noise perceivable in the passenger compartment of a motor vehicle comprising a braking system comprising a plurality of braking assemblies associated with wheels of the motor vehicle. The automotive active brake noise damping system comprises a sensory system to sense quantities that allow braking noise perceived in the passenger compartment of the motor vehicle and generated by the braking assemblies during braking to be estimated, an audio system to diffuse sounds in the passenger compartment of the motor vehicle, and an electronic control unit connected to the sensory system and the audio system, and programmed to control the audio system based on the quantities sensed by the sensor system to actively damp the braking noise perceived in the passenger compartment of the motor vehicle.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: December 25, 2018
    Assignee: FCA Italy S.p.A.
    Inventors: Renato Badino, Stefano Luca
  • Patent number: 10018241
    Abstract: Provided is a vibration isolator (10) including a partition member (15) configured to partition a liquid chamber of a first attachment member (11) into a main liquid chamber (16a) disposed at one side in an axial direction and a subsidiary liquid chamber (16b) disposed at the other side in the axial direction, and a movable plate (18) displaced according to a pressure difference between the main liquid chamber (16a) and the subsidiary liquid chamber (16b), wherein an accommodating chamber (29) configured to accommodate the movable plate (18), a first communication hole (23) configured to bring the accommodating chamber (29) in communication with the main liquid chamber (16a), and a second communication hole (24) configured to bring the accommodating chamber (29) in communication with the subsidiary liquid chamber (16b) are formed in the partition member (15).
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 10, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Tatsuya Tsutsumi
  • Patent number: 10006514
    Abstract: The present disclosure relates to a frequency tuned damper having a vibration body (19) and at least one elastic element (11, 13, 15, 17) which connects the vibration body to a surface (21), the vibrations of which is to be dampened. The elastic element has a wide portion (29) and a narrow portion (31) disposed at different locations on an axis (39) which is substantially parallel with the normal of the surface. The wider portion has a cavity (41), and the wide and narrow portions are inter-connected by a transition portion (43). The part of the narrow portion that is closest to the transition portion fits inside the cavity, as seen in the direction of the axis, such that the narrow portion can be pushed at least partly into the cavity, thereby flexing the transition portion.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: June 26, 2018
    Assignee: VIBRACOUSTIC FORSHEDA AB
    Inventor: Bengt-Göran Gustavsson
  • Patent number: 9992890
    Abstract: A system or structure subject to external mechanical dynamic loading excitations propagated within the system or structure comprising a fluid filled structure and a fluid volume operable to facilitate fluid flow about at least part of the structure. Excitations within the structure can be propagated throughout. The system can further comprise a tuned mass damper (TMD) located within the fluid volume. The TMD can leverage the viscous properties of the fluid to attenuate the excitations within the structure. The TMD can comprise a mass and a spring operably connected to the mass. The TMD can further comprise a fluid resistance facilitating fluid flow about the mass and the spring for damping and a secondary tuning feature operably connected to at least one of the mass and the spring and the supporting fluid-filled structure.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: June 5, 2018
    Assignee: Raytheon Company
    Inventors: Florian P. Lukowski, Jr., Paul M. Shaheen, Charles Chu
  • Patent number: 9958028
    Abstract: A device for damping torsion oscillations comprises support rotatably movable about an axis. A pendular body comprises first and second axially spaced pendular masses movable relative to the support. The first mass disposed axially on a first side of the support and the second mass disposed axially on a second side of the support. A member connects the first and second pendular masses. Each mass includes an opening in which the connecting member is force-fitted. The openings have radially exterior and interior edges. The connecting member has radially interior and exterior edges. The radially exterior edge extends between two angular ends of the connecting member, each defined by a lug. Each mass exerts a force on each lug, and via a one nose piece projecting radially and carried by the radially interior edge of the opening or the radially interior edge of the connecting member.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: May 1, 2018
    Assignee: Valeo Embrayages
    Inventors: Roel Verhoog, Franck Cailleret
  • Patent number: 9895961
    Abstract: An airflow outlet comprising at least a first plurality of airflow direction elements, a second plurality of airflow direction elements, and an actuation system is provided. Each of the respective first airflow direction elements and second airflow direction elements include a vane shaft and at least one vane element disposed along the vane shaft and integrally coupled thereto. The actuation system is configured to control the position of the vane elements of each of the airflow direction elements. The actuation system includes a drive element engaged with the driven element, which is further engaged with the vane shafts of each of the airflow direction elements. A rotation of the drive element causes a proportional rotation of the vane elements of the each of the airflow direction elements to an operating position, which defines an airflow direction through the airflow outlet.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 20, 2018
    Assignee: GM Global Technology Operations LLC
    Inventor: Gerard Alan Brinas
  • Patent number: 9895800
    Abstract: A robot includes a base, a first arm which is rotatable around a first rotating axis with respect to the base, a second arm which is rotatable around a second rotating axis orthogonal to the first rotating axis, a third arm which is rotatable around a third rotating axis parallel to the second rotating axis, a first angular velocity sensor provided in the first arm, and a second angular velocity sensor provided in the third arm. The angle between a detection axis of the first angular velocity sensor and the first rotating axis is a predetermined first angle. The angle between a detection axis of the second angular velocity sensor and the second rotating axis is a predetermined second angle.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: February 20, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Atsushi Asada, Akio Niu, Hiroaki Hosomi
  • Patent number: 9889506
    Abstract: Provided is a vibration-proof structure capable of more effectively reducing rotational vibration of a rotating body during a cutting operation. According to a configuration of the structure, inside a main body of the rotating body, there are provided a plurality of shaft members arranged along a longitudinal direction of a rotation axis of the rotating body and at least one layer of multiple tubular members fitted over the shaft members and arranged coaxially with the rotation axis along the longitudinal direction of this rotation axis; and a boundary position between the shaft members adjacent each other in the longitudinal direction and a boundary position between the tubular members adjacent each other in the longitudinal direction are set as different positions along the longitudinal direction.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: February 13, 2018
    Assignee: Daishowa Seiki Kabushiki Kaisha
    Inventors: Joji Nakatani, Yasuyuki Ishida
  • Patent number: 9873198
    Abstract: According to some embodiments of the present invention, a cooperatively-controlled robot includes a robotic actuator assembly comprising a tool holder and a force sensor. The cooperatively-controlled robot further includes a control system adapted to communicate with the robotic actuator assembly and the force sensor, and an actuator in communication with the control system and mechanically coupled to a tool. The force sensor is configured to detect a vibrational force applied on the tool and send a signal to the control system based on the vibrational force. The control system is configured to receive the signal and determine a force to apply to the tool to damp the vibrational force. The control system then signals to the actuator to apply the determined force, and the actuator applies the determined force to actively damp a vibration of the tool.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: January 23, 2018
    Assignee: The Johns Hopkins University
    Inventors: Russell H. Taylor, Kevin C. Olds, Guillaume Arvin
  • Patent number: 9829877
    Abstract: A servo control apparatus according to the present invention includes a speed command generator; a torque command generator; a speed detector; a speed control loop; a speed control loop gain setting unit; at least one filter for filtering a specific band of a torque command value; a sinusoidal disturbance input unit for performing a sinusoidal sweep on the speed control loop; a frequency characteristics calculator for estimating the gain and phase of speed control loop input and output signals; a resonance frequency detector; a filter adjuster for adjusting the filter in accordance with a resonance frequency; a gain adjuster; a sequence controller for online and automatically performing the detection of the resonance frequency, the adjustment of the speed control loop gain, and the adjustment of the filter; and an adjustment state display unit. The adjustment state display unit displays a stage and progress in the adjustment by the sequence controller.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: November 28, 2017
    Assignee: FANUC CORPORATION
    Inventor: Kazunori Iijima
  • Patent number: 9797262
    Abstract: A vane cluster includes a split damped outer shroud and an inner shroud spaced from the split damped outer shroud with a multiple of stator vane airfoils that extend between the split damped outer shroud and the inner shroud.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: October 24, 2017
    Assignee: United Technologies Corporation
    Inventors: Carl S. Richardson, Mark J. Rogers, Jonathan J. Earl, Kenneth E. Carman, Richard K. Hayford
  • Patent number: 9777474
    Abstract: A vibration control wall structure, which is introducible into a wall part of a building, includes a wall frame, a vibration control wall body, and a vibration control damper for absorbing a vibration acting on a building. The vibration control wall body includes a plurality of face materials which are fixed to a frame material via a fastening member and are connected to each other in a width direction. A gap part is formed such that both side end portions of the vibration control wall body are separated from the wall frame so as to absorb displacement in an in-plane direction. The vibration acting on the building is damped by the vibration control damper having a long hole in a longitudinal width direction of the vibration control wall body. The vibration control wall body can relatively slide in the long hole in the longitudinal width direction.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: October 3, 2017
    Assignee: IDEAL BRAIN CO., LTD.
    Inventor: Takanori Sato
  • Patent number: 9695901
    Abstract: A gas spring system includes: a gas spring assembly including at least one gas damping passage; a reservoir member connected to the gas spring assembly, the gas spring assembly being in fluid communication with the reservoir member by way of the at least one gas damping passage; and a guide member coupled with the gas spring assembly, the guide member at least partially enclosing the reservoir member and being configured for sliding axially relative to the reservoir member.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 4, 2017
    Assignee: Firestone Industrial Products Company, LLC
    Inventor: Joshua R. Leonard
  • Patent number: 9695904
    Abstract: A centrifugal pendulum device includes a pendulum mass carrier, which is rotatable about a rotation axis, and at least one pendulum mass, which is supported on the pendulum mass carrier for movement along a track between end stops which are spaced from one another in circumferential direction in relation to the rotation axis. A spring device urges the pendulum mass in one of the end stops, when the rotation speed of the pendulum mass carrier drops below a limit rotation speed.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: July 4, 2017
    Assignee: AUDI AG
    Inventors: Herbert Meyer, Sebastian Schulze
  • Patent number: 9689452
    Abstract: A method for assembling a pendulum-type damping device (1) includes the steps of force-fitting a first end of the spacer (17) into an opening (26) of a first part (3a) of a pendulum mass (3). A support (2) is positioned so that the spacer (17) spans a corresponding opening of the support (2). A roller is positioned between the spacer (17) and the edge of the opening of the support (2). The second end (17b) of the spacer (17) is force fit into an opening (26) of a second part (3b) of the mass (3).
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: June 27, 2017
    Assignee: Valeo Embrayages
    Inventors: Marc Ray, Roel Verhoog, Franck Cailleret, Michael Hennebelle
  • Patent number: 9665108
    Abstract: The present invention provides a vibration reduction apparatus which reduces a vibration of a target object supported on a base, comprising a first object supported by a first elastic member on the base, a second object supported by a second elastic member on the first object, a detection unit including a sensor having a first electrode provided on the first object and a second electrode provided on the second object, and a processor configured to obtain a distance between the first electrode and the second electrode using the sensor, a first driving unit configured to drive the first object, a first control unit configured to control the distance between the first electrode and the second electrode constant based on a detection result, wherein the second electrode and the processor are electrically connected to each other via the second elastic member.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: May 30, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ryo Nawata
  • Patent number: 9606547
    Abstract: An apparatus for controlling an actuator in a camera module is provided. The apparatus includes a position controller for producing a control voltage to move a lens of the camera module, a hall sensor for detecting an amount of change in magnetic lines of force generated by a magnet as a hall voltage, a voice coil motor for moving the lens according to a current applied thereto, and a current controller for using a voltage applied to the voice coil motor to detect an interference voltage created by the current applied to the voice coil motor, for generating an interference-eliminated hall voltage by removing the interference voltage from the hall voltage, and for controlling the current applied to the voice coil motor based on the control voltage and the interference-eliminated hall voltage.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: March 28, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-Gu Lee
  • Patent number: 9588524
    Abstract: Provided is a vibration control device, which enables the vibrations of a vibrating body, such as a rotary machine, to automatically be suppressed, without installing a vibration detection sensor on the vibration control device or vibrating body, and without controlling the rotational speed or phase of the vibration control device. The vibration control device (1), which is installed on a vibrating body (2) and controls the vibrations of the vibrating body (2), comprises a rotating shaft (11), a mass body (12) that is fixed to the rotating shaft (11), and an activation apparatus (13) that adds the power of a rotational motion, which is centered on the rotating shaft (11), to the mass body (12).
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: March 7, 2017
    Assignees: NAGASAKI UNIVERSITY, MITSUI ENGINEERING & SHIPBUILDING CO., LTD.
    Inventors: Yutaka Yoshitake, Shuhei Kajiwara
  • Patent number: 9551397
    Abstract: A damping system (10) having a rotation axis (X) and comprising at least: one first flyweight (14) and one second flyweight (14) able to oscillate with respect to a support member (12), and at least one device (20) for guiding the first and second flyweights (14) with respect to the support member (12), having at least one bearing element (22) able to interact with a pair of opposite tracks, respectively a first guidance track (24) and a second guidance track (26) that is carried by the support member (12), wherein the first guidance track (24) is carried by said connecting means (16).
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: January 24, 2017
    Assignee: Valeo Embrayages
    Inventor: Roel Verhoog
  • Patent number: 9541149
    Abstract: A system, including methods and apparatus, of tuning a mass-damping apparatus to reduce dynamics forces on a wind tunnel model during wind tunnel testing. The mass-damping apparatus is coupled to a wind tunnel model and may comprise first and second pressure chambers containing a gas, a mass configured to move back and forth between the pressure chambers in a substantially airtight manner and thereby to alter gas pressure within each pressure chamber, at least one spring configured to exert a position-dependent force upon the mass, and a passageway configured to allow the gas to pass between the chambers.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: January 10, 2017
    Assignee: The Boeing Company
    Inventors: Bryan David McGranahan, Mathew Lee Rueger
  • Patent number: 9500247
    Abstract: A vibration dampener, including, a first beam comprising a first mounting end portion and a first peripheral end portion, wherein the first peripheral end portion comprises a tunable mass, and the first beam is configured to vibrate in tune with a vibrational frequency of a structure supporting the first beam at the first mounting end portion, a second beam comprising a second mounting end portion and a second peripheral end portion, wherein the second peripheral end portion comprises a ring disposed about the first beam, and a viscoelastic material disposed between the first beam and the ring, wherein the viscoelastic material is configured to dampen vibrational energy as the first beam vibrates toward the ring until the viscoelastic material becomes compressed between the first beam and the ring during the course of the impact.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: November 22, 2016
    Assignee: University of Houston
    Inventors: Gangbing Song, Luyu Li, Mithun Singla, Yi-Lung Mo
  • Patent number: 9488240
    Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: November 8, 2016
    Assignee: Oiles Corporation
    Inventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai
  • Patent number: 9446651
    Abstract: A vehicle suspension and wheel damper using anti-causal filtering. Information from in front of a wheel or information about an operating condition of a vehicle is used to anti-causally determine a response of an active suspension associated with the wheel.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: September 20, 2016
    Assignee: Bose Corporation
    Inventors: Marco Giovanardi, David J. Warkentin
  • Patent number: 9434836
    Abstract: An EPDM composition for a torsional damper. The EPDM composition is made of (a) an EPDM polymer, (b) liquid polyolefin oligomer, and (c) carbon black, the EPDM composition containing 100 parts by weight of EPDM polymer that is the EPDM polymer of (a) having a propylene content of 35 to 50 wt % in the total amount of ethylene and propylene, 5 to 30 parts by weight of liquid polyolefin oligomer that is the liquid polyolefin oligomer of (b) having a number average molecular weight Mn within a range of 3,000 to 4,000, and 10 to 120 parts by weight of carbon black that is the carbon black of (c) having a nitrogen adsorption specific surface area within a range of 100 to 150 m2/g, an iodine adsorption within a range of 110 to 160 mg/g, and a DBP oil absorption within a range of 70 to 135 cm3/100 g.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: September 6, 2016
    Assignee: NOK Corporation
    Inventor: Tetsuro Negami
  • Patent number: 9404556
    Abstract: An illustrative embodiment of a damper for use with rotary machinery may include a damper mass connected to an electronics housing via one or more piezo elements. The illustrative embodiment of the damper may include one or more electrical components wherein the electrical components, piezo elements, and/or damper mass may be tuned such that the damper is configured with an electrical resonance frequency corresponding to a mechanical resonance frequency present in a component of the rotary machinery. The piezo elements may be extension/retraction type or bending type, and they may have any orientation with respect to the rotational axis of the rotary machinery depending on the specific embodiment and/or application of the damper.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 2, 2016
    Inventor: Michael K. Swann
  • Patent number: 9316116
    Abstract: A method for vibration damping of at least one blade of a turbomachine, wherein initially at least one damping element is arranged on the blade such that it can move in the axial direction, employs a damping element having a larger permeability constant than the blade (?rD>?rB), and then a magnetic field acting in the radial direction is generated at least temporarily during rotation of a rotor hub of the turbomachine in order to adjust the mass of the damping element in real time. A damping device includes, for example, a ferromagnetic damping element as well as a magnetic field source, and a turbomachine.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: April 19, 2016
    Assignee: MTU AERO ENGINES GmbH
    Inventor: Ulrich Retze
  • Patent number: 9304404
    Abstract: An arrangement actuates an element in a microlithographic projection exposure apparatus. The arrangement includes first and second actuators and first and second mechanical couplings. The first and second actuators are coupled to the element via corresponding ones of the first and second mechanical couplings for applying respective forces to the element which is regulatable in at least one degree of freedom. The first and second actuators have first and second actuator masses, respectively, and the first actuator mass and the first mechanical coupling conjointly define a first mass-spring system operating as a first low-pass filter. The second actuator mass and the second mechanical coupling conjointly define a second mass-spring system operating as a second low-pass filter. The first and second mass-spring systems have first and second natural frequencies deviating from each other by a maximum deviation equal to 10% of the largest of the first and second natural frequencies.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: April 5, 2016
    Assignees: Carl Zeiss SMT GmbH, ASML Netherlands B.V.
    Inventors: Juergen Fischer, Ulrich Schoenhoff, Bernhard Geuppert, Hans Butler, Robertus Johannes Marinus De Jongh
  • Patent number: 9221143
    Abstract: An apparatus includes an external input device that allows setting of the amount of runout and the phase of each cutting edge, a computation device that acquires the rotational phase of a tool and that computes the angular velocity and the phase of vibration of two, X-axis and Y-axis, feed shafts on the basis of the input amount of runout and angular velocity of each cutting edge to generate a feed shaft control signal, and a numerical control device that controls feed in the X-axis and the Y-axis directions. The numerical control device relatively vibrates a workpiece in synchronization with the angular velocity of the tool on the basis of the results of computation performed by the computation device.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: December 29, 2015
    Assignee: Okuma Corporation
    Inventors: Hiroshi Inagaki, Toshiya Shikama
  • Patent number: 9221141
    Abstract: A tuned mass tool holder having an axis of rotation has a mass that can be varied. The distribution of the tool holder mass can be adjusted along the axis of rotation, the center of gravity of the tool holder can be moved along the axis of rotation, and the moment of inertia of the tool holder can be changed relative to the holder-spindle interface.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 29, 2015
    Assignee: The Boeing Company
    Inventor: Liangji Xu
  • Patent number: 9197968
    Abstract: A loudspeaker system, and a method and device for actuating a loudspeaker, using a loudspeaker element connected to a memory metal part and provided in a portable electronic device; and a power source unit configured to supply power to the memory metal part, wherein, when power is supplied to the memory metal part, the memory metal part is configured to exert a force on the loudspeaker element to actuate it.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: November 24, 2015
    Assignees: Sony Corporation, Sony Mobile Communications AB
    Inventor: Gunnar Klinghult
  • Patent number: 9152233
    Abstract: A touch panel support structure that can transfer vibration of a touch panel to the operator even though a transparent protective plate is in tight contact with the surface of a case is provided. A rectangular touch panel is sandwiched at four corners between the transparent protective plate that is fixedly attached to the case near the four corners and backside support members so that the four corners act as the nodes of vibration. The antinode of waveform of vibration is located in an input operation area inside the four corners so that the touch panel can vibrate with a certain amplitude together with the transparent protective plate that covers the input operation area, even though the touch panel is fixed to the frame-like case along its periphery via the transparent protective plate, and thus vibration can be transferred to the operator.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: October 6, 2015
    Assignee: SMK Corporation
    Inventor: Ryuji Ikeda
  • Patent number: 9139304
    Abstract: Method and system for unspinning a payload ejected from a spinning artillery projectile where the projectile is loaded with a cargo holding the payload and a payload unspinning device. The cargo is ejected from the projectile and the payload unspinning device is operated. The cargo includes a parachute and a shroud which covers the folded parachute and at least a portion of the payload. The payload unspinning device includes at least two yo-yo cords. Ejection of the cargo is followed sequentially by unwinding of the at least two yo-yo cords, liberation of the shroud, deployment of the parachute and stabilization of the payload.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: September 22, 2015
    Assignee: DR. FRUCHT SYSTEMS LTD.
    Inventor: Yaacov Frucht
  • Patent number: 9074640
    Abstract: An E clutch hub assembly for the Ford 6R140 transmission, that reduces the squawk noise that occurs during the 3-4 upshift. A clutch hub has a lower pressure washer onto which is stacked a damper hub having radially located lube holes to direct lube to the E clutch plates. An upper pressure washer is stacked onto the damper hub while a pressure plate, seated within a snap ring rove machined into the hub, applies pressure onto the two pressure washers which help absorb the squawk noise. A waved spring holds the entire assembly within the hub.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: July 7, 2015
    Inventor: Ron Wolverton
  • Patent number: 9038793
    Abstract: Centrifugal pendulum device including pendulum masses arranged on axial sides of a pendulum mass support rotatable about an axis of rotation to form a pendulum mass pair. To form the mass pair, the masses are fastened to each other by means of a fastener passing through a cutout in the mass support. The mass pair is pivotable relative to the mass support due to a rolling element arranged to roll in a recess of the mass support and of the mass. In a section axially covering the recess of the mass support, the rolling element has a first outer diameter. In a section axially covering the recess of the pendulum mass, the rolling element has a second outer diameter. The rolling element further comprises a section axially located between the first and second diameters and has a third diameter, which is smaller than or equal to the first outer diameter.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: May 26, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Thorsten Krause, Kai Schenck, Stephan Maienschein
  • Patent number: 9027720
    Abstract: A vibration damping mechanism allows increase of an absorption amount of vibration energy, with less possibilities of increase in the manufacture cost of a vibration damping weight and of reduction in the strength of a shaft section. Within a cylindrical hollow portion formed inside the shaft section, there are accommodated a plurality of weight members divided from each other along the circumferential direction about the axis of the hollow portion. An urging member is provided for urging the weight members toward the axis such that dividing faces of adjacent weight members are brought into surface contact with each other.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: May 12, 2015
    Assignee: Daishowa Seiki Kabushiki Kaisha
    Inventor: Tatsuya Ogata