Damping Using Swinging Masses, E.g., Pendulum Type, Etc. Patents (Class 74/574.2)
  • Patent number: 11280331
    Abstract: A pump system may include a pump, a driveshaft, driving equipment, and a vibration dampening assembly configured to reduce pump-imposed high frequency/low amplitude and low frequency/high amplitude torsional vibrations. The pump may have an input shaft connected to the driveshaft. The driving equipment may include an output shaft having an output flange connected to the driveshaft. The driving equipment may be configured to rotate the driveshaft to rotate the input shaft of the pump therewith. The vibration dampening assembly may include one or more flywheels operably connected to the input shaft and configured to rotate therewith.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: March 22, 2022
    Assignee: BJ Energy Solutions, LLC
    Inventors: Tony Yeung, Ricardo Rodriguez-Ramon, Guillermo Rodriguez, Samir Nath Seth
  • Patent number: 11181166
    Abstract: A crank cap assembly including a single crank cap rotatably supporting a crankshaft includes: a fastening member fastened to the crank cap, a mass member; and an elastic rubber member elastically attaching the mass member to the crank cap. The elastic rubber member includes a first rubber part arranged between the fastening member and the mass member and a second rubber part arranged between the crank cap and the mass member. The first rubber part and the second rubber part are arranged to be aligned in the mounting direction when attaching the crank cap to an engine body, and the elastic rubber member is formed so that a length in the mounting direction is longer than a maximum length in a cross-section of the elastic rubber member perpendicular to the mounting direction.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: November 23, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Tomoyuki Ono
  • Patent number: 11156277
    Abstract: The present device includes an inertia ring, a plurality of centrifugal elements, a plurality of cam mechanisms and a plurality of restriction mechanisms. The inertia ring is disposed to be rotatable with a hub flange and be rotatable relatively to the hub flange. Each centrifugal element is disposed to receive a centrifugal force generated by rotation of the hub flange and the inertia ring. When a relative displacement is produced between the hub flange and the inertia ring in a rotational direction while the centrifugal force is acting on each centrifugal element, each cam mechanism converts the centrifugal force into a circumferential force directed to reduce the relative displacement. Each restriction mechanism allows actuation of each centrifugal element by each cam mechanism, and restricts radial movement of each centrifugal element.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: October 26, 2021
    Assignee: EXEDY CORPORATION
    Inventor: Tomoyuki Nishikawa
  • Patent number: 11149818
    Abstract: A rotary device includes two rotatable rotors and two stopper mechanisms. The first and second stopper mechanisms restrict relative rotation between the rotors. The first stopper mechanism includes a first protruding member and a first contact surface. The first protruding member includes an elastic outer peripheral part. The first contact surface is disposed at an interval from the first protruding member. The first protruding member contacts the first contact surface when a torsion angle between the rotors reaches a first angle. The second stopper mechanism includes a second protruding member and a second contact surface. The second protruding member includes an outer peripheral part having higher stifffiess than that of the first protruding member. The second contact surface is disposed at an interval from the second protruding member. The second protruding member contacts the second contact surface when the torsion angle reaches a second angle greater than the first angle.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: October 19, 2021
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Keisuke Sakai
  • Patent number: 11067149
    Abstract: A centrifugal pendulum includes a first flange, a first pendulum mass, and a first preloading element. The first pendulum mass is arranged on the first flange for movement in a radial direction relative to an axis of rotation and relative to the first flange. The first pendulum mass has an innermost point, an outermost point, a radial extension between the innermost point and the outermost point, and a first region arranged radially inward at most five percent (5%) of the radial extension from the outermost point. The first preloading element is arranged to contact the first pendulum mass in the first region for axially preloading the first pendulum mass with respect to the first flange.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: July 20, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Florent Kremer, Alain Rusch, Evgenij Franz, Jonas Schnell
  • Patent number: 11015594
    Abstract: A pump system may include a pump, a driveshaft, driving equipment, and a vibration dampening assembly configured to reduce pump-imposed high frequency/low amplitude and low frequency/high amplitude torsional vibrations. The pump may have an input shaft connected to the driveshaft. The driving equipment may include an output shaft having an output flange connected to the driveshaft. The driving equipment may be configured to rotate the driveshaft to rotate the input shaft of the pump therewith. The vibration dampening assembly may include one or more flywheels operably connected to the input shaft and configured to rotate therewith.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: May 25, 2021
    Assignee: BJ Energy Solutions, LLC
    Inventors: Tony Yeung, Ricardo Rodriguez-Ramon, Guillermo Rodriguez, Samir Nath Seth
  • Patent number: 10801579
    Abstract: The present invention relates to a centrifugal pendulum device (2) comprising a rotatable pendulum mass carrier (18) and at least one pendulum mass (28), which is arranged thereon to be moveable between two end positions relative to the pendulum mass carrier (18) due to at least one guide element (44) which extends in guide means (46, 48, 50) in the pendulum mass carrier (18) and the pendulum mass (28), wherein a damping element (52) is arranged on the pendulum mass (28) via which the pendulum mass (28) is supported or supportable on the pendulum mass carrier (18) before reaching at least one of the end positions, preferably both end positions. In addition, the present invention relates to a torsional vibration damper comprising such a centrifugal pendulum device (2).
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: October 13, 2020
    Assignee: BorgWarner Inc.
    Inventor: Oliver Groneberg
  • Patent number: 10640063
    Abstract: An electrical load, for example and electrical component and/or an electronic component, of a motor vehicle may include a first electrical system part and a second electrical system part for supplying the electrical load with electrical energy from a first vehicle electrical system and a second vehicle electrical system, respectively. The first vehicle electrical system part may be electrically coupled to a diode element for transferring an activation signal to an electrical energy supply unit provided in the second electrical system part. The electrical energy supply unit may be switched between an active state where a supply voltage is provided to the electrical load and an idle state where the supply voltage to the electrical load is suspended.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: May 5, 2020
    Assignee: Mahle International GmbH
    Inventors: Tobias Binder, Markus Cramme, Michael Krappel
  • Patent number: 10626950
    Abstract: A torque fluctuation inhibiting device includes a mass body, a centrifugal element and a cam mechanism. The mass body is disposed to be rotatable with a rotor and be rotatable relatively to the rotor. The centrifugal element is disposed to receive a centrifugal force to be generated by rotation of the rotor and the mass body. When a relative displacement is produced between the rotor and the mass body in a rotational direction, the cam mechanism converts the centrifugal force that acts on the centrifugal element into a circumferential force directed to reduce the relative displacement. Additionally, when the torque fluctuations inputted to the rotor have a predetermined magnitude or greater, the cam mechanism makes the mass body freely rotate with respect to the rotor.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 21, 2020
    Assignee: EXEDY CORPORATION
    Inventors: Naoki Tomiyama, Yoshiyuki Hagihara, Koichi Higuchi
  • Patent number: 10605326
    Abstract: A mass damper system with a damper mass carrier having guide paths for receiving damper masses. The guide paths initiate swiveling movement at the damper masses around a center of mass during deflection of the damper masses. String lengths of imaginary string pendulums predetermine a position of respective coupling element configure the guide paths and the path curve is based on a first radial portion that extends from a central axis of the damper mass carrier to a connection point of a second radial portion and the second radial portion extends from the first radial portion to the center of mass. A ratio value is formed from a swiveling angle of the damper mass and its oscillation angle. A coupling element position in relation to the string length is determined by this ratio value.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: March 31, 2020
    Assignee: ZF Friedrichshafen AG
    Inventors: Kyrill Siemens, Mathias Kopp
  • Patent number: 10533629
    Abstract: In the centrifugal pendulum damper, a plurality of pendulums are swingably supported on a rotating body. The pendulum includes a swinging shaft serving as the swing center and a rolling shaft including a rolling surface on the outer periphery thereof. The rotating body includes a plurality of pendulum support portions, and the pendulum support portion includes a swinging shaft guide portion that guides the swinging shaft in a radial direction of the rotating body, and a rolling shaft guide portion that is in rolling-contact with the rolling surface of the rolling shaft to cause the pendulum to swing around the swing axis.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: January 14, 2020
    Assignee: NSK LTD.
    Inventors: Nagao Dohi, Hiroki Nishii, Shohei Kaneko, Eisaku Suzuki
  • Patent number: 10495178
    Abstract: A torque fluctuation inhibiting device includes a mass body. The mass body disposed to be rotatable with a rotor and be rotatable relatively to the rotor. Each of a plurality of centrifugal elements is radially movable by a centrifugal force that acts thereon in rotation of the rotor and the mass body. When a relative displacement is produced between the rotor and the mass body in a rotational direction while the centrifugal force is acting on the each of the plurality of centrifugal elements, each of a plurality of cam mechanisms converts the centrifugal force into a circumferential force directed to reduce the relative displacement. A plurality of restriction members allow the plurality of centrifugal elements to move in actuation of the plurality of cam mechanisms, and restrict the plurality of centrifugal elements from moving radially inward in non-actuation of the plurality of cam mechanisms.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: December 3, 2019
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Keisuke Sakai
  • Patent number: 10480616
    Abstract: An engine assembly has a damper rotationally coupled to a crankshaft. The damper has first and second spokes connecting a hub to an inertial weight, with the inertial weight circumferentially surrounding and spaced apart from the hub. Each of the spokes has an airfoil section. The first spoke is oriented with a positive angle of attack and the second spoke is oriented with one of a negative angle of attack and a zero angle of attack. A crankshaft damper is provided by a member having first and second spokes extending radially outwardly from a huh to an outer rim supporting an inertial weight. A chord associated with the first spoke is oriented at a first angle of attack relative to a rotational plane of the member. A chord associated with the second spoke is oriented at a second angle of attack relative to the rotational plane.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: November 19, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ahsanul Karim, Abdelkrim Zouani, Michael Stanley
  • Patent number: 10316930
    Abstract: A device for damping torsional oscillations, comprising: a support capable of moving rotationally around an axis; a plurality of pendulum bodies, each pendulum body being movable with respect to the support; and a plurality of bearing members, each bearing member interacting with a first raceway integral with the support and with at least one second raceway integral with a pendulum body, the movement of each pendulum body with respect to the support being guided by two of those bearing members, the support comprising a plurality of windows in each of which two bearing members are received, one of those bearing members interacting with at least one second raceway integral with one of the pendulum bodies, and the other of those bearing members interacting with at least one second raceway integral with another of those pendulum bodies, the pendulum bodies being circumferentially adjacent.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: June 11, 2019
    Assignee: Valeo Embrayages
    Inventors: Roel Verhoog, Franck Cailleret
  • Patent number: 10309484
    Abstract: A device for damping torsional oscillations comprises a support rotatable around an axis. At least one pendulum body is movable with respect to the support. At least one bearing member interacts with at least one raceway integral with the support and with at least one raceway integral with the pendulum body. The bearing member rolls along each raceway around an inactive raceway position. The first region is shaped to filter a first order value of the torsional oscillations by the pendulum body when the bearing member rolls along that first region. Two second regions are beyond an end of the first region. Each second region is shaped to filter a second order value of the torsional oscillations by the pendulum body when the bearing member rolls along one of those second regions. The second order value is strictly lower than the first order value.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: June 4, 2019
    Assignee: Valeo Embrayages
    Inventor: Roel Verhoog
  • Patent number: 10294997
    Abstract: A method of forming a damper assembly for a motor vehicle drive train is provided. The method includes staking a damper flange including a splined inner circumferential surface onto a damper hub to form a first rotational connection between the damper flange and damper hub; and forming a second rotational connection between a radially projecting protrusion of the damper hub and the damper flange. A damper assembly is also provided that includes a damper flange including a splined inner circumferential surface; and a damper hub including an outer circumferential surface staked to the splined inner circumferential surface of damper flange forming a first rotational connection between the damper flange and damper hub. The damper hub includes a radially projecting protrusion fixed to the damper flange forming a second rotational connection between the damper flange and the damper hub.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 21, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Phong Lu
  • Patent number: 10190654
    Abstract: Torsional vibration dampers for FEADs are disclosed that include a hub having a sleeve defining a bore for receiving a shaft and an outer annular ring spaced radially outward from the sleeve, thereby defining an annular receptacle, a component for rotation with the hub having an inner annular ring disposed between the sleeve and the outer annular ring of the hub, and an annular cartridge seated in the annular receptacle between the inner annular ring of the component for rotation with the hub and the sleeve or outer annular ring of the hub. The annular cartridge defines a first annular groove having a generally C-shaped or U-shaped cross-sectional profile open radially outward, and has a first elastomer member seated therein in compression, thereby operatively coupling the component for rotation with the hub to the hub. The component may be a pulley body or an inertia member.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: January 29, 2019
    Assignee: Dayco IP Holdings, LLC
    Inventor: Suhale Manzoor
  • Patent number: 10132384
    Abstract: A centrifugal pendulum vibration absorbing device includes a flange that is coupled to a driven member that is a rotary element that rotates using power from an engine and a mass body that is coupled to the flange so as to oscillate about a pendulum fulcrum PF and is designed so as to have an effective order qeff that is greater by a correction amount ?q that is at least associated with the non-linearity of an order q of vibration of the flange and the mass body that is dependent on an oscillation angle ? of the mass body than an order qtag of vibration that is generated in the engine to be damped.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: November 20, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Yoshihiro Takikawa, Yoichi Oi, Hiroki Nagai, Kazuhiro Itou
  • Patent number: 10113611
    Abstract: A torsional vibration damper mounted at a crankshaft of an engine is provided. The torsional vibration damper comprises a hub having a first mounting surface and a second mounting surface opposite to the first mounting surface, an inertia ring and an elastomer element disposed between the hub and the inertia ring. The hub includes a first mounting hole configured to receive the crankshaft, and at least one slot spaced apart from the first mounting hole. The slot is configured such that a center-of-gravity of the torsional vibration damper is offset from a central axis of the crankshaft.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: October 30, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Bruce Li, Bin Yin, Dallis Sun, Baocheng Sun, Jagadish Sorab
  • Patent number: 10107358
    Abstract: A centrifugal pendulum for a drivetrain of a motor vehicle, which is mountable rotatably around an axis of rotation, having a pendulum mass, a first sliding block guide and a pendulum flange, where the pendulum mass includes a first pendulum mass part, where the first pendulum mass part is coupled with the pendulum flange via the first sliding block guide, where the first sliding block guide is designed to guide the first pendulum mass part along an oscillation path in an oscillating motion, where the pendulum mass has an additional pendulum mass part and a coupling, where the additional pendulum mass part is coupled with the first pendulum mass part by the coupling so that it is movable at least in the radial direction relative to the pendulum mass part.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: October 23, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Christian Dinger
  • Patent number: 10060503
    Abstract: A reduced noise flexplate assembly and method of construction is provided. The assembly includes a central plate that is generally disc shaped and extends radially from an axis. A ring gear is disposed annularly about the central plate and presents a plurality of ring teeth that extend radially therefrom for engaging a pinion gear coupled to a starter of an automobile. A noise plate is attached to the central plate with a plurality of plate fasteners and extends circumferentially about the axis. The noise plate includes a flange and a lower lip extending generally axially and radially outwardly from the inside flange to a maximum deflection zone adjacent to the ring teeth of the ring gear. The noise plate is frictionally engaged with and slideably moveable relative to the central plate and/or ring gear to reduce noise and reduce vibrations during starting of the automobile by converting friction into heat.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 28, 2018
    Assignee: MAGNA POWERTRAIN, INC.
    Inventors: Andrzej Kowalski, Gunter R. Ladewig, Georges Issa, Dusan Milacic
  • Patent number: 9988921
    Abstract: The present disclosure relates to sealing systems for gas turbine engines. In one embodiment, a circumferential seal for a gas turbine engine includes a first beam, a second beam, a seal shoe and at least one feature between the first beam and second beam configured to retain a beam spacer, wherein the at least one feature is configured to dampen at least one of beam and shoe vibration of the circumferential seal. Another embodiment is directed to a circumferential seal including a beam spacer.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: June 5, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Ross Wilson, Michael G. McCaffrey
  • Patent number: 9989120
    Abstract: A balancer, attachable via its attaching portion to a rotatable body, and rotatable together therewith about its rotation axis, includes: weights of same mass and shape; and a weight holder with storage chambers for housing the weights, respectively, such that the weights can oscillate in arbitrary directions. The weight is shaped similar to and smaller than the chamber. The chamber is a cylindrical space extending alongside its central axis; and has concave curved ends perpendicular to the central axis. Midpoints of the central axes of the chambers are contact points on a circumference of a circle having the rotation axis as its center and being on an arbitrary plane perpendicular to the rotation axis; and are positioned so that they create a rotational symmetry around the rotation axis. The balancer can correct dynamic imbalance in rotatable bodies, such as machine tools, at both low-speeds and high-speeds of rotation.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: June 5, 2018
    Inventor: Hiroaki Yamamoto
  • Patent number: 9869366
    Abstract: An apparatus for reducing vibration for vehicles may include discs rotated in connection with an engine rotating shaft, a plurality of masses provided at the circumferential parts of the discs, and a plurality of connection elements provided between the masses, a first end of each of the connection elements being hinged to the disc and both sides of a second end of each of the connection elements being connected to different adjacent masses.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: January 16, 2018
    Assignee: Hyundai Motor Company
    Inventors: Wan Soo Oh, Jang Won Lee, Jae Woong Hwang
  • Patent number: 9849557
    Abstract: A coupling mechanism which enables a rotating body to follow an undulation of a polishing surface without generating flutter or vibration of the rotating body, and can finely control a load on the rotating body on a polishing surface in a load range which is smaller than the gravity of rotating body is disclosed. The coupling mechanism includes an upper spherical bearing and a lower spherical bearing disposed between a drive shaft and the rotating body. The upper spherical bearing has a first concave contact surface and a second convex contact surface which are in contact with each other, and the lower spherical bearing has a third concave contact surface and a fourth convex contact surface which are in contact with each other. The first concave contact surface and the second convex contact surface are located above the third concave contact surface and the fourth convex contact surface.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: December 26, 2017
    Assignee: EBARA CORPORATION
    Inventor: Hiroyuki Shinozaki
  • Patent number: 9790793
    Abstract: An exemplary gas turbine includes a rotor unit, a tie-bolt, a cooling air pipe, and a clamping member. The rotor unit includes rotor blades and rotor disks. The rotor blades are arranged on outer circumferential surfaces of the rotor blades. The tie-bolt extends along the central axis of the rotor unit through the rotor disks and fastens the rotor disks. The cooling air pipe has the tie-bolt arranged therethrough and forms a ring-shaped cooling air flow path in an internal space thereof with the tie-bolt through which a cooling air is passed. The clamping member is arranged in the ring-shaped cooling air flow path so as to support the tie-bolt with respect to the cooling air pipe.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: October 17, 2017
    Assignee: Doosan Heavy Industries & Construction Co., Ltd.
    Inventor: Sung Chul Jung
  • Patent number: 9726254
    Abstract: A tuned mass vibration damper included at least one damper mass and at least one guide component part to movably guide the at least one damper mass. The damper mass has a retaining component part which is at least partially arranged in a receiving recess of the damper mass. The retaining component part has at least one retaining structure and the at least one guide component part has at least one mating retaining structure to limit a movement of the at least one damper mass relative to the at least one guide component part in that the retaining structure and the mating retaining structure come in contact with one another. The at least one damper mass drives the retaining component part during a movement of the damper mass along a circumferential direction and to allow a relative movement of the retaining component part (350) with respect to the damper mass which results in a change in a radial distance of the retaining structure from the axis of rotation.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: August 8, 2017
    Assignee: ZF Friedrichshafen AG
    Inventors: Kyrill Siemens, Michael Wirachowski
  • Patent number: 9709126
    Abstract: A torsional vibration damper includes a pendulum flange which is rotatable around an axis of rotation, having a cutout, as well as two pendulum mass pairs which are movably attached to the pendulum flange, adjacent to each other in the circumferential direction, and an elastic element to damp mutual colliding of adjacent pendulum mass pairs. The pendulum mass pairs each comprise two pendulum masses which are positioned opposite each other relative to the pendulum flange, and a bolt which runs through the cutout and connects the pendulum masses to each other axially. In the area of the cutout an elastic element is attached to each of the two bolts, which is set up to collide with the other elastic element in the circumferential direction.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: July 18, 2017
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: David Schnaedelbach, Christian Huegel, Michael Rieber
  • Patent number: 9599209
    Abstract: Torsional vibration dampers having a hub integral with a pulley body for rotation therewith and at least an annular first elastomeric member seated on the pulley body between the outer belt engaging surface and the hub and held thereagainst for rotation therewith by a first inertia ring connected to the pulley body are disclosed. The torsional vibration dampers may also include an annular second elastomeric member seated on the pulley body, on a side opposite the annular first elastomeric member, between the outer belt engaging surface and the hub and held thereagainst for rotation therewith by a second inertia ring connected to the pulley body or seated on the first inertia member, on a side opposite the first elastomeric member, between the first inertia member and a front end cap, where the front end cap compresses the second elastomeric member against the first inertia member.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: March 21, 2017
    Assignee: DAYCO IP HOLDINGS, LLC
    Inventor: Suhale Manzoor
  • Patent number: 9546706
    Abstract: A pendulum absorber assembly including a rotor coupled to a rotating shaft, a pendulum absorber moveably coupled to the rotor and including a preloaded sliding joint coupled to a first counterbalancing section and a second counterbalancing section, the preloaded sliding joint configured to urge the first counterbalancing section away from the second counterbalancing section, and two pins, each of the pins coupled to a different counterbalancing section and the rotor.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: January 17, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: Abhisek Jain
  • Patent number: 9404555
    Abstract: A centrifugal pendulum damping device includes a support body provided with a pair of first curved tracks and fixed to a rotating shaft, inertial masses provided with a pair of second curved tracks and supported on an outer peripheral part of the support body, and pins rollably fitted in a section where a first and second curved track intersect each other. Since the shapes of the pair of first curved tracks are different from each other and the shapes of the pair of second curved tracks are different from each other, the inertial mass moves rotationally and translationally in the peripheral direction of the support body, which improves damping low frequency vibration performance. Since the inertial mass moves rotationally, it is less likely to extend outside the region of the support body.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: August 2, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Fumiya Nishii, Kazuhiko Yamamoto
  • Patent number: 9328796
    Abstract: A centrifugal pendulum mechanism, in particular a trapezoidal centrifugal pendulum mechanism, for a damping device and/or a torque transmission device, in particular for a drive train of a motor vehicle, comprising a pendulum mass carrier, which can be rotated about a rotational axis (S) and on which a plurality of pendulum masses or pendulum mass pairs that can be moved relative to the pendulum mass carrier are provided in the circumferential direction, wherein two pendulum masses or pendulum mass pairs directly adjacent in the circumferential direction of the pendulum mass carrier are or can be mechanically coupled to each other by means of a damping element.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 3, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Parviz Movlazada
  • 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: 9032838
    Abstract: A clutch arrangement, in particular for use in the drive train of a motor vehicle, including a flywheel which is arranged on the drive side and is coupled via a spring arrangement to a secondary disk and is part, with said secondary disk, of a two-mass flywheel. The secondary disk has at least one centrifugal force pendulum, and a threaded sleeve is screwed with an outer thread into an inner thread of the secondary disk, and a clutch housing is screwed to an inner thread of the threaded sleeve via a fastener.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: May 19, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Florian Nachtmann, Christoph Raber, Olaf Schillinger, Marcus Scherrer
  • Patent number: 9032837
    Abstract: A pendulum absorber system attenuates torsional vibrations within a drive train of a vehicle. The system can be incorporated between an engine and an automatic transmission, for example, within a flex plate assembly attached to an engine's crankshaft, within a pump housing cover of a torque converter, or as a stand-alone unit between a flex plate assembly and a torque converter. The system includes at least one pendulum weight that dynamically moves along a predetermined path in response to variations in rotational velocities of a housing of the system and that is tuned to attenuate excitation of torsional vibrations within the drive train. A limiter assembly, which can include multiple limiters, is provided within the system for stopping movement of the weight when it reaches endpoints of the predetermined path, by mechanically impeding further movement at both of a first and second end of the weight.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: May 19, 2015
    Assignee: Chrysler Group LLC
    Inventors: James R. Klotz, Bruce Geist, Jerry P. Harkey
  • Publication number: 20150128758
    Abstract: A pendulum damper fixed to a rotating element of an engine comprises a pendulum anchor, a pendulum, and a flexible metal strap attaching the pendulum and pendulum anchor. The strap is wound around the pendulum and pendulum anchor to define a bifilar pendulum. A pendulum clamp is attached to the pendulum such that part of the strap is captured between the pendulum clamp and the pendulum. A pendulum anchor clamp is attached to the pendulum anchor such that a portion of the strap is captured between the pendulum anchor clamp and the pendulum anchor. The pendulum includes a pendulum anchor-facing, flexible strap-supporting cam surface. The pendulum anchor includes a pendulum-facing, flexible strap-supporting cam surface. The surfaces of the pendulum and the pendulum anchor that face each other are mutually conjugant so that at all positions of normal pendulum motion there is only a small running clearance between the two surfaces.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Applicant: Ford Global Technologies, LLC.
    Inventors: Thomas G. Leone, Alvin H. Berger
  • Publication number: 20150101451
    Abstract: The invention relates to a torsional vibration absorber, comprising a rotatable support disc and several pendulum masses, which are hinged in an oscillating manner on the support disc in particular and are thereby able to move relative to the support disc along the associated pendulum rails. In order to create a torsional vibration absorber, through which several excitation orders are able to be absorbed with a simultaneously compact structure, the pendulum masses combine at least one pair of pendulum masses, with which the two associated pendulum masses are coupled to each other through at least one intermediate spring element. In addition, the invention relates to a torsional vibration damper, with which at least one aforementioned torsional vibration absorber is applied.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 16, 2015
    Inventors: Bastian Volpert, Michael Wechs, Thomas Mauz
  • Publication number: 20150101450
    Abstract: The invention relates to a centrifugal force pendulum (100) for suppressing torsional oscillations in a drive train, comprising a first and a second flange (105, 110) that are non-rotatably connected to the drive train and a first and a second pendulum mass (125, 135) that are arranged axially offset between the flanges. The pendulum masses have different suppressing frequencies.
    Type: Application
    Filed: October 31, 2012
    Publication date: April 16, 2015
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Michael Kühnle, David Schnädelbach
  • Publication number: 20150075229
    Abstract: A dynamic balancer device for a laundry treating appliance includes, among other things, a first raceway piece having an L-shaped cross section defining a first annular channel and a second raceway piece having an L-shaped cross section defining a second annular channel. The first raceway piece is attached to the second raceway piece with the first annular channel facing the second annular channel to define a raceway. The dynamic balancer device also includes a mass disposed in the annular raceway and movable therein.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 19, 2015
    Applicant: Whirlpool Corporation
    Inventors: GEORGE W. MALHEIROS, RICHARD V. ONEY, SCOTT T. THALLS
  • Publication number: 20150075320
    Abstract: A pendulum damping device for a motor vehicle transmission, having at least one pendulum mass (33), a central part (33a) of which is mounted movably on a support (26) capable of pivoting around an axis, and having at least one roller (36) mounted radially between the radially outer periphery of the central part (33a) and a radially outer part of the support (26), in such a way that during operation, the central part (33a) of the pendulum mass (33) abuts radially outwardly against the roller (36), the latter (36) in turn abutting radially outwardly against the support (26). The pendulum mass (33) comprises at least one lateral part (33b) fastened to the central part (33a) and designed so that the center of gravity of the pendulum mass (33) is situated radially outside the contact regions between the central part (33a) of the pendulum mass (33) and the roller (36).
    Type: Application
    Filed: April 17, 2013
    Publication date: March 19, 2015
    Inventor: Roel Verhoog
  • Patent number: 8955409
    Abstract: A rotating assembly includes a shaft having a driven end and a driving end. At least one rotating member coupled to the driven end. A support member is operatively connected to the at least one rotating member. A dynamic balancing system is operatively coupled to the support member. The dynamic balancing system includes a first balancing weight rotatably mounted to the support member. The first balancing weight is operatively connected to a first motor. A second balancing weight is rotatably mounted to the support member. The second balancing weight is operatively connected to a second motor. A controller is operatively connected to the first and second motors. The controller is configured and disposed to signal each of the first and second motors to rotate and to establish a desired position of the first balancing weight and the second balancing weight relative to at least one rotating member.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: February 17, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Paul A. Carvalho
  • Patent number: 8925420
    Abstract: A centrifugal pendulum mechanism having a pendulum flange and pendulum masses, which are fastened by bolts on both sides of the pendulum flange and are guided by rollers and can be pivoted slightly relative to the pendulum flange. At least two pendulum masses are arranged on the pendulum flange so as to be circumferentially adjacent. One pendulum mass has a lateral surface that faces the adjacent pendulum mass, and the contour of the lateral surface is at a substantially acute angle.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: January 6, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Darius Wysgol, David Schnaedelbach, Thorsten Krause
  • Patent number: 8910762
    Abstract: A centrifugal-pendulum vibration absorbing device, including a member attached coaxially with a rotary element; and mass bodies swingably coupled to the support member and disposed adjacent to each other in a circumferential direction. The mass bodies are configured such that when a first mass body, which is one of two mass bodies disposed adjacent to each other, and a second mass body, which is the other of the two mass bodies, move with respect to the support member so as to approach each other, the first mass body and the second mass body overlap each other as seen from an axial direction of the rotary element.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: December 16, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Yoshihiro Takikawa, Kazuto Maruyama, Kazuhiro Itou, Koji Maeda
  • Patent number: 8881622
    Abstract: A centrifugal pendulum mechanism that includes a pendulum flange and pendulum masses which are fastened on both sides of the pendulum flange by a spacing bolt accommodated in a curved cutout of the pendulum flange to form a pair of pendulum masses, where the pair of pendulum masses is guided relative to the pendulum flange by the at least two rollers and can be pivoted restrictively because of a stop, where the rollers are accommodated in curved guide tracks in the pendulum masses and in complementary curved guide tracks in the pendulum flange and can be rolled, and at least two pairs of pendulum masses are arranged so as to be circumferentially adjacent to each other.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: November 11, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Stephan Maienschein, David Schnaedelbach, Darius Wysgol, Christian Huegel, Stefan Jung, Thorsten Krause, Eugen Kombowski
  • Publication number: 20140305258
    Abstract: An internal combustion engine with a centrifugal pendulum device having a pendulum mass carrier, a moveable coupling element rotatably coupled to the pendulum mass carrier via a first bearing element, the coupling element forming a continuous piece of material, and two pendulum masses spaced away from one another and rotatably coupled to the coupling element via a second bearing element and a third bearing element.
    Type: Application
    Filed: April 10, 2014
    Publication date: October 16, 2014
    Applicant: Ford Global Technologies, LLC
    Inventor: Ulrich Bertram
  • Publication number: 20140298952
    Abstract: A drive train including an internal combustion engine having a predefined number of cylinders, and operable in a first engine operating state in which all cylinders are in operation, and a second operating state in which some of the cylinders are not in operation. The drive train has a torsional-vibration damping system with at least one torsional-vibration damper and at least one centrifugal-force pendulum. In order to improve the torsional-vibration behavior of the drive train, a centrifugal-force pendulum and optionally a torsional-vibration damper are adapted to control torsional-vibration behavior of the engine in one operating state, and a torsional-vibration damper and optionally a second centrifugal-force pendulum are adapted to control the torsional-vibration behavior of the engine in the other engine operating state.
    Type: Application
    Filed: November 26, 2012
    Publication date: October 9, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Hartmut Mende, Walter Hepperle, Roland Seebacher
  • Patent number: 8839693
    Abstract: A pendulum absorber assembly for a torque converter including a first spring retainer, a second spring retainer, and a floating flange positioned between the first spring retainer and the second spring retainer. The pendulum absorber assembly also includes a drive plate affixed to the floating flange, a plurality of arcuate springs disposed between the second spring retainer and the drive plate, and a plurality of pendulum weights affixed to the second spring retainer, wherein at least one of the pendulum weights is made of tungsten alloy.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: September 23, 2014
    Assignee: Chrysler Group LLC
    Inventors: Marvin G. Schiemann, Michael Fingerman, Tomasz K. Kietlinski, Bruce Geist
  • Patent number: 8839924
    Abstract: A compact fluid transmission apparatus that is able to effectively damp vibrations transmitted to an input member with a dynamic damper and a centrifugal pendulum vibration absorber. The apparatus includes a pump impeller that is connected to an input member coupled to a motor, and a turbine runner that is rotatable together with the pump impeller. The elastic body of the damper mechanism and the elastic body of the dynamic damper overlap each other with respect to an axial direction of the fluid transmission apparatus when viewed in a radial direction of the fluid transmission apparatus, and are arranged between the turbine runner and the centrifugal pendulum vibration absorber when viewed in the radial direction.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: September 23, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Yoshihiro Takikawa, Kazuto Maruyama, Kazuhiro Itou
  • Publication number: 20140251075
    Abstract: A damping system (10) having a rotation axis (X) and comprising at least: 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: Application
    Filed: October 18, 2012
    Publication date: September 11, 2014
    Inventor: Roel Verhoog
  • Patent number: 8820674
    Abstract: A carrier structure for a rotor and a method of preventing the coupling of the vibration modes of a carrier structure of a flying machine with the vibration modes of a rotor are provided. The carrier structure has an airframe and a mounting structure suitable for being engaged with the rotor. A vibration-damper mechanism is fitted to the mounting structure and has a resonator that includes a weight element, a damper, and a first deformable member. The weight element is a flapping weight element and is carried by the mounting structure via the first deformable member. The first deformable member allows the weight element to move with respect to the mounting structure and restrains the mobility of the weight element. The damper is interposed between the weight element and the mounting structure for damping the movement of the weight element.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: September 2, 2014
    Assignee: Airbus Helicopters
    Inventor: Paul Cranga