With Fluid Damping Patents (Class 192/208)
  • Patent number: 10883565
    Abstract: A hydraulic power transmission device includes a front cover, a torque converter main body, a lock-up device, and a dynamic damper. The dynamic damper has a base plate, inertia rings and lid members that configure an inertial body, viscosity attenuation portions, and an elastic coupling portion. The base plate is fixed to an output plate. The inertial body can move in the rotation direction relative to the base plate. The viscosity attenuation portions can generate a variable hysteresis torque according to the relative speed difference between the base plate and the inertial body.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: January 5, 2021
    Assignee: EXEDY CORPORATION
    Inventors: Yuki Kawahara, Yusuke Okamoto, Yusuke Okamachi
  • Patent number: 10848097
    Abstract: A photovoltaic system includes a collection of photovoltaic modules, a base supporting the collection of photovoltaic modules, and a damper coupled between the collection of photovoltaic modules and the base. The damper resists movement of the photovoltaic modules relative to the base. The damper has a first damping ratio when the collection of photovoltaic modules moves at a first rate relative to the base and a second damping ratio when the collection of photovoltaic modules moves at a second rate relative to the base, and the damper passively transitions from the first damping ratio to the second damping ratio.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: November 24, 2020
    Assignee: FCX Solar LLC
    Inventors: Christopher Thomas Needham, Frank Carl Oudheusden
  • Patent number: 10760644
    Abstract: A dynamic vibration absorber is configured to be attached to a rotary member. The dynamic vibration absorber includes a base member, a mass body, and a torque limiting part. The base member is rotatably disposed. The mass body is attached to the base member so as to be rotatable relatively thereto. The torque limiting part limits transmission of a torque to be inputted into the base member from the rotary member.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: September 1, 2020
    Assignee: EXEDY CORPORATION
    Inventor: Yuki Kawahara
  • Patent number: 10677294
    Abstract: A decoupler assembly comprises a torque equalizer and a one-way clutch bearing. The torque equalizer comprises an inner member having a rotational axis, an outer member disposed concentrically and surrounding the inner member, and two arcuate spring elements arranged between the inner member and the outer member, and configured to transmit torque between the inner and outer members. The inner member is rotationally displaceable relative to the outer member at least 30 degrees upon compression of the two arcuate spring elements. The one-way clutch bearing is located in the same radial plane as torque equalizer and rotationally connected to the inner member or the outer member. The one-way clutch bearing comprises an outer race, an inner race, and a plurality of individual wedging locking elements that are disposed between the inner and outer races. The decoupler assembly may comprise a single spiral spring element or a rubber-based spring element.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: June 9, 2020
    Assignee: Volvo Car Corporation
    Inventor: Hayder Al-Kattan
  • Patent number: 10630231
    Abstract: A photovoltaic system includes a collection of photovoltaic modules, a base supporting the collection of photovoltaic modules, and a damper coupled between the collection of photovoltaic modules and the base. The damper resists movement of the photovoltaic modules relative to the base. The damper has a first damping ratio when the collection of photovoltaic modules moves at a first rate relative to the base and a second damping ratio when the collection of photovoltaic modules moves at a second rate relative to the base, and the damper passively transitions from the first damping ratio to the second damping ratio.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 21, 2020
    Assignee: FCX Solar LLC
    Inventors: Christopher Thomas Needham, Frank Carl Oudheusden
  • Patent number: 10562388
    Abstract: A rotary tilling apparatus separates a power transmission system starting from a flywheel to a passive movement device through an elastic coupler from another power transmission system starting from the flywheel to a rotor of a motor generator, and thereby reduces a load applied to the rotor and prevents the power transmission system of the passive movement device from providing a negative effect to an engine and the rotor. A parallel hybrid power transmission mechanism includes an engine, a crank shaft disposed on the engine, a motor generator, a passive movement device configured to receive a motive power of the motor generator, an input shaft disposed on the passive movement device, a flywheel coupled to the crank shaft, an elastic coupler configured to couple the flywheel to the input shaft, and a rotor disposed on the motor generator and coupled to the fly wheel.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: February 18, 2020
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Kazuto Okazaki
  • Patent number: 10544839
    Abstract: A clutch portion is disposed between a front cover and a turbine. A piston is movable in an axial direction and turns the clutch portion into a torque transmission state. A sleeve supports an inner peripheral surface of the piston such that the piston is movable in the axial direction. An oil chamber is supplied a hydraulic oil for activating the piston to turn the clutch portion into the torque transmission state. The sleeve includes an inner peripheral side oil channel and an outer peripheral side oil channel. The inner peripheral side oil channel leads the hydraulic oil residing on an inner peripheral side of the sleeve to an outer peripheral side. The outer peripheral side oil channel leads the hydraulic oil led thereto through the inner peripheral side oil channel to the oil chamber.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: January 28, 2020
    Assignee: EXEDY CORPORATION
    Inventor: Satoru Matsuda
  • Patent number: 10295035
    Abstract: A torque converter includes a front cover, an output shaft member, a piston, a clutch, an impeller, and a turbine. The piston is supported by the output shaft member. The piston slides on the output shaft member in an axial direction. The piston extends in a radial direction. The clutch is disposed between the front cover and the piston. The impeller includes an impeller shell and an impeller blade. The impeller shell is fixed to the front cover. The impeller blade is attached to the impeller shell. The turbine includes a turbine shell, a turbine blade and a connecting portion. The turbine shell is disposed in opposition to the impeller. The turbine blade is attached to the turbine shell. The connecting portion connects the piston and the turbine shell so as to make the piston and the turbine shell unitarily rotatable.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: May 21, 2019
    Assignee: EXEDY CORPORATION
    Inventor: Keiji Sato
  • Patent number: 10274040
    Abstract: An active damping system for a driveline includes a prop shaft configured to transmit engine power from an engine to a load, a sealed damper housing, and an active damping fluid contained within the sealed damper housing. A viscosity of the active damping fluid is changeable based on a torsional vibration of the prop shaft. The active damping system further includes a piston fixed to a side of the prop shaft and in communication with the active damping fluid. The piston is configured to rotate about an axis of the prop shaft. The system further includes a viscosity changing unit in communication with the active damping fluid, and a controller operatively connected to the viscosity changing unit. The controller is configured to cause the viscosity changing unit to change a viscosity of the active damping fluid. The viscosity of the active damping fluid changes the torsional vibration.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: April 30, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xiaofeng Mao, Hai Xu, Jeffrey N. Heaton, Scott C. Mrdeza
  • Patent number: 10125853
    Abstract: A torque converter assembly includes a pump assembly coupled to a nose hub, a turbine assembly coupled to a turbine hub, a damper assembly coupled to the turbine hub, a backing plate assembly coupled to the nose hub, and a clutch assembly capable of transmitting torsional loads between the backing plate assembly and the damper assembly. The clutch assembly has an engaged position and a disengaged position. When the clutch assembly is engaged, the pump assembly is mechanically coupled to the turbine assembly and when the clutch assembly is disengaged, the pump assembly is not mechanically coupled to the turbine assembly.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: November 13, 2018
    Assignee: ALLISON TRANSMISSION, INC.
    Inventors: Jezrah Horen, Michael Rietdorf
  • Patent number: 10100909
    Abstract: A torque transmission device, particularly for a motor vehicle, comprises a torque input element (15, 17) and a torque output element (8) configured to pivot about an axis (X) with respect to one another, at least one elastic leaf (22), rotationally coupled to the torque output element (8) or to the torque input element (15, 17) respectively. The at least one elastic leaf (22) is configured to elastically and radially engage a supporting member (18) carried by the torque input element (15, 17) or the torque output element (8) respectively. The at least one elastic leaf (22) is configured to bend upon rotation of the torque input element (15, 17) with respect to the torque input element (8).
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: October 16, 2018
    Assignee: Valeo Embrayages
    Inventor: Patrick Durham
  • Patent number: 10066720
    Abstract: A torsional vibration reduction device that is provided inside of a fluid power transmitting device that has a driving side member that generates a fluid flow, and a driven side member that is driven by the fluid flow, includes a rolling element configured to move in a reciprocating manner according to a variation in torque; a retaining member that has a rolling chamber configured to house the rolling element in a manner that enables the rolling element to move in a reciprocating manner; and a housing configured to shield the rolling element and the rolling chamber from fluid inside of the fluid power transmitting device. The retaining member is enclosed and fixed inside the housing, and the housing is fixed to the driven side member.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: September 4, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yu Miyahara, Fusahiro Tsukano, Atsushi Honda
  • Patent number: 9845854
    Abstract: A hydrokinetic torque coupling device features a casing including a casing shell and an impeller casing shell, an impeller including the impeller shell, a turbine-piston including a turbine-piston shell, and a restriction element. The turbine-piston shell includes a turbine-piston flange and partitions the interior volume of the casing into two chambers. The turbine-piston flange has an engagement surface movable axially toward and away from an engagement surface of a piston engagement portion of the impeller shell to position the hydrokinetic torque coupling device into and out of a lockup mode. The restriction element is configured to restrict fluid flow and create a pressure drop between the first and second chambers.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: December 19, 2017
    Assignee: Valeo Embrayages
    Inventors: Alexandre Depraete, Sungchul Lee, Michel Bacher
  • Patent number: 9702430
    Abstract: An apparatus for damping of a flywheel, which is configured so that a second mass may rotate in a direction for offsetting torsional vibration of an engine transmitted to a first mass through a damping spring. The apparatus includes: guides disposed between damping springs and guiding the damping springs extending/contracting in a rotational direction by a damping operation; and a third mass arranged coaxially with the second mass, with one end connected to the guide, and relatively rotating in a direction for offsetting torsional vibration of the engine transmitted to the second mass.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: July 11, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Wan Soo Oh, Heung Seok Lee, Yong Wook Jin, Jae Woong Hwang
  • Patent number: 9625023
    Abstract: A tuned damper for a torque converter includes a piston plate with a pivot ring, an inertia ring at least partially rotatable in a circumferential direction relative to the piston plate, and a resilient element fixed to the inertia ring and frictionally engaged with the piston plate pivot ring. In some example embodiments, the pivot ring includes a pair of radially extending tabs, the resilient element includes a radially-extending leaf spring fixed to a slide roll, and an outer circumference of the slide roll is clamped by the pivot ring tabs. In an example embodiment, the pivot ring tabs each include respective distal bent segments extending toward one another to limit radial displacement of the slide roll. In an example embodiment, an inertia of the inertia ring and a torsional spring rate of the resilient element are selected so that a natural frequency of the inertia ring is less than a shudder frequency.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: April 18, 2017
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Jeffrey Hemphill, Michael G. Swank, Edmund Maucher, Ashi Uppal
  • Patent number: 8636599
    Abstract: A torque fluctuation absorber includes a center plate rotatably arranged, a side plate arranged coaxially with and rotatably relative to the center plate, an elastic member accommodated in a space surrounded by the side plate and absorbing torque fluctuations generated between the side plate and the center plate, a cover member separating the space and an outside space from each other by covering a clearance between the center plate and the side plate, and a vent portion arranged inwardly in a radial direction of the side plate relative to the cover member and providing a ventilation between the space and the outside space.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: January 28, 2014
    Assignees: Aisin Seiki Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Masaru Ebata, Toshiya Yamashita, Takashi Hori, Yasunori Doman
  • Patent number: 8000868
    Abstract: A method controls a friction clutch disposed between an internal combustion engine and a change speed transmission. The friction clutch is controlled in such a way that it transmits an average coupling torque of the internal combustion engine and does not transmit periodically occurring peak values of the coupling torque. In addition, a control unit is programmed to carry out the method.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: August 16, 2011
    Assignee: Dr. Ing. h.c. F. Porsche AG
    Inventors: Frank Kurrle, Katja Treutner, Peter Baur
  • Publication number: 20110120832
    Abstract: A torsional damper includes a torque limiter and a damper. The torque limiter includes at least two friction members, allows transmission of torque, and prohibits transmission of excessive torque. The damper absorbs torsional vibration through resilient deformation of a spring. The torque limiter is a wet torque limiter in which the friction members are arranged in an oil chamber filled with lubricating oil. The damper is a dry damper in which the spring is not immersed in the lubricating oil.
    Type: Application
    Filed: February 26, 2010
    Publication date: May 26, 2011
    Applicant: AISIN AW INDUSTRIES CO., LTD.
    Inventors: Yoshito Takeshita, Fumiaki Doseki, Masaaki Yamaguchi, Taku Suzuki
  • Patent number: 7926637
    Abstract: A device for damping vibrations, in particular a torsion vibration damper with a primary component and a secondary component, coupled together through a torque transfer device and a damping coupling device. The torque coupling device includes a ramp mechanism for converting a rotation of one of the two elements, primary component or secondary component, into an axial force proportional to the input moment, which acts upon the other element. A device for compensating the resulting axial forces for generating an opposing force, opposing the resulting axial force, wherein the input moment is designed for a mean input torque. A conversion device is also provided, which directly converts an occurring force difference between the resulting axial force and the opposite force into a control variable for operating an actuation device in the device for damping vibrations, whereby an adaptation of the opposite force is performed.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: April 19, 2011
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Eugen Kremer, Laurent Ineichen, Christian Huegel
  • Patent number: 7726449
    Abstract: An airtight damper, an input axis, and a flywheel are mounted to the input axis with a bolt. A torque transmitter, a torque transmitter attachment unit of the flywheel, and a support plate are united with each other using a bolt. The torque transmitter includes a spline unit. A pressure plate engaged with the spline unit is pressed by a pressure spring so as to press a friction plate and a torque transmitter plate against the support plate. Since the torque transmitter plate is fixed to a drive plate by a rivet, the torque from the input axis can be transmitted to the drive plate. Although the torque from the engine is larger than an allowable value, a friction member can slip at a constant torque depending on the pressure of the pressure spring, thereby protecting the damper against an excess load.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: June 1, 2010
    Assignee: NSK-Warner K.K.
    Inventors: Hiroshi Yabe, Dai Okamura
  • Publication number: 20100072014
    Abstract: An impeller hub assembly including a first portion connected to a rotor for an electric motor, a second portion connected to an impeller shell of a torque converter, and a rotary shaft seal for hydraulically sealing at least one of the first and second portions of the impeller hub assembly to a housing for the torque converter. The assembly may further include a dynamic seal, a hydraulic chamber at least partially enclosed by the rotary shaft seal and the dynamic seal, and a hydraulic channel in fluid communication with the chamber. In some example embodiments of the invention, the hydraulic channel is for lowering pressure in the chamber by providing a discharge path for fluid in the chamber.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 25, 2010
    Applicant: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KG
    Inventors: Gregory HEEKE, Eugen KOMBOWSKI
  • Patent number: 7341523
    Abstract: A torsional vibration damper has two mutually pivoted masses and a friction device that is active between the masses. This friction device can include a first friction device that is a spring friction device and an auxiliary friction device comprising at least one entraining wedge. The entraining wedge can function as a dual wedge having at least two frictional surfaces for contacting at least one of the two mutually pivoted masses. There can also be at least one additional entraining wedge disposed parallel to the at least one entraining wedge inside of a chamber formed between the two mutually pivoted masses. The friction device and the auxiliary friction device frictionally couple the two mutually pivoted masses together.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: March 11, 2008
    Assignee: Rohs-Voigt Patentverwertungsgesellschaft mbH
    Inventor: Dietmar Heidingsfeld
  • Patent number: 7288043
    Abstract: A belt type continuously variable transmission including a primary pulley; a secondary pulley; a belt which is looped over the primary pulley and the secondary pulley; a reduction gear unit that transmits torque, which has been output from an internal combustion engine and then transmitted to a secondary shaft, to a final reduction gear unit that is provided so as to be coaxial with the secondary shaft of the secondary pulley; and a damper oil chamber which is provided between the secondary shaft and an input shaft of the reduction gear unit. A thrust force generated in the reduction gear unit due to an input of a driving force is transmitted to a hydraulic fluid in a damper oil chamber, and then absorbed. Therefore, a displacement of a relative position between the primary pulley and the secondary pulley is suppressed.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: October 30, 2007
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Shioiri, Ryuji Ibaraki, Hitoshi Nomasa, Hiroaki Kimura
  • Patent number: 6883655
    Abstract: A variable torsional damper rotatably supported for translating torque between a prime mover and the input of a transmission. The variable torsional damper includes a torque input member operatively connected for rotation with the power take off of a prime mover, an output member operatively connected for rotation with the input to a transmission and a plurality of damping members interposed between the input member and the output member. The damping members act to translate torque between the input member and the output member to dampen torsional forces generated between the prime mover and the transmission. A magneto-rheological damper assembly is disposed in parallel with the damping members and is adapted to operatively vary the hysteresis between the input member and the output member of the variable torsional damper.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 26, 2005
    Assignee: BorgWarner, Inc.
    Inventors: Brian K. Stefina, William Vukovich
  • Patent number: 6726569
    Abstract: A divided flywheel having two flywheel masses which can be rotated in relation to each other, counter the action of a damping device, preferable in order to dampen the torsional vibrations of an internal combustion engine.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: April 27, 2004
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Holger Seidl, Gerhard Ronner, Martin Kirschner
  • Patent number: 6695108
    Abstract: The invention relates to a starting unit for use in drive systems, especially of motor vehicles, which comprises a hydrodynamic speed/torque converter including at least one pump wheel, one turbine wheel and one stator, and comprises a torque converter lockup clutch. The output ends of the torque converter lockup clutch and of the speed/torque converter are interconnected in a rotationally fixed manner. In addition, a device for damping vibrations is provided which comprises at least one torsional vibration damper with hydraulic damping.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: February 24, 2004
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Wolfgang Hanke, Franz Brenner
  • Patent number: 6668995
    Abstract: A variable inertia flywheel and clutch assembly having a primary flywheel mass rotationally fixed to an engine crankshaft and a secondary flywheel mass selectively engageable with a clutch disc, which is rotationally fixed to a transmission input shaft. A radial spring assembly is coupled between the primary mass and the secondary mass, as well as a latching assembly that can latch to selectively prevent relative rotation between the primary mass and the secondary mass. Preferably, the latching assembly is also employed as a variable damper between the primary mass and the secondary mass when the latching assembly is not latched.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: December 30, 2003
    Assignee: Ford Global Technologies, LLC
    Inventors: David Allen Janson, Gregory Daniel Goleski, John Matthew Ginder, Larry Dean Elie
  • Publication number: 20030213672
    Abstract: A variable inertia flywheel and clutch assembly having a primary flywheel mass rotationally fixed to an engine crankshaft and a secondary flywheel mass selectively engageable with a clutch disc, which is rotationally fixed to a transmission input shaft. A radial spring assembly is coupled between the primary mass and the secondary mass, as well as a latching assembly that can latch to selectively prevent relative rotation between the primary mass and the secondary mass. Preferably, the latching assembly is also employed as a variable damper between the primary mass and the secondary mass when the latching assembly is not latched.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 20, 2003
    Applicant: Ford Global Technologies, Inc.
    Inventors: David Allen Janson, Gregory Daniel Goleski, John Matthew Ginder, Larry Dean Elie
  • Patent number: 6620048
    Abstract: Apparatus for transmission of torque in the power train of a motor vehicle has coaxial rotary first and second torque transmitting devices, each of which can constitute a simple or a composite flywheel, and a torsional vibration damper operating between the two devices. The damper is installed in an annular chamber which is sealed at its periphery and is flanked by two sidewalls of the first torque transmitting device. The damper includes a washer-like partition which is affixed to the second torque transmitting device and has arms extending radially outwardly into the chamber. The radially inner part of the annular chamber is sealed by annular seals having annular carriers borne by the sidewalls at opposite sides of the partition, and deformable annular lips secured to the carriers and bearing upon the respective sides of the partition. The carriers and the lips consist of different materials and the seals serve to prevent penetration of impurities into and/or the escape of lubricant from the chamber.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: September 16, 2003
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Achinm Gillmann, Ad Kooy, Dietmar Strauss, Johann J├Ąckel
  • Patent number: 6318522
    Abstract: A damper for damping movement of a shaft, the damper including a housing having an inner surface defining a chamber and a rotor rotatably mounted in the chamber. The chamber is filled with magnetorheological fluid such that when the rotor is moved in the chamber the magnetorheological fluid damps the movement of the rotor. The rotor has an outer surface adjacent to and spaced apart from the inner surface. The damper further comprises shaft coupled to the rotor and an outer magnet adjacent the space between the outer surface and the inner surface for restricting the flow of the magnetorheological fluid in the space between the outer surface and the inner surface.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: November 20, 2001
    Assignee: Delphi Technologies, Inc.
    Inventors: Gary Lee Johnston, Michael Leslie Oliver, Richard Edward Longhouse, Brian Paul Heber, William Charles Kruckemeyer
  • Patent number: 6238294
    Abstract: A torsional vibration damper or torsionally elastic coupling comprises an inner portion, an outer portion, and radial leaf spring assemblies extending between the inner and outer portions. Each leaf spring assembly is clamped in a clamping area between adapters at one end of the leaf spring assembly and includes two leaf springs fixed to the outer portion at the one end and having their opposite ends engage in axial grooves of the inner portion. The two leaf springs protrude radially inwards from the clamping area up to the opposite ends engaged in the axial grooves and, to reduce wear phenomena and to improve the load-bearing capacity of the leaf springs for torque transmission, they define a free clearance of movement from the clamping area to the axial grooves.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: May 29, 2001
    Assignee: Ellergon Antriebstechnik GmbH
    Inventor: Felix Martinek
  • Patent number: 6193611
    Abstract: A disk-type flexible coupling, specifically for installation into the drive train of a motor vehicle between a combustion engine and a transmission, has a first coupling half. The first coupling half, by use of two side disks which are connected for torsional strength on the outer circumference, encloses a second clutch half which is formed by at least one center disk which is assigned to one hub. The coupling halves are interconnected through flexible coupling elements and have limited torsion relative to each other. The side disks border a liquid-tight inside chamber which is filled with a damping medium and which receives the center disk. In the inside chamber, a floating damping ring is provided which has limited torsion relative to the two coupling halves. The damping ring, together with the first coupling half, forms a first displacement chamber. The damping ring, together with the second coupling half, forms at least one second displacement chamber. The volume of both displacement chambers is variable.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: February 27, 2001
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Wolfgang Hanke, Armin Hartleitner
  • Patent number: 6119839
    Abstract: A torsional vibration damper has primary and secondary masses rotatable with and relative to each other about a common axis, and a torsionally elastic damper which opposes rotation of the masses relative to each other and operates in series with a torque limiting device. The latter comprises a pair of ring-shaped lateral members flanking a ring-shaped intermediate member which can stress the energy storing elements of the torsionally elastic damper. One of the lateral members is a prestressed diaphragm spring which is riveted to the other lateral member. The maximum torque which can be transmitted by the torque limiting device is greater than the maximum torque which can be transmitted by a friction clutch between the secondary mass and the transmission of a motor vehicle. The primary mass can receive torque from the engine of the vehicle.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: September 19, 2000
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Johann Jackel, Hartmut Mende
  • Patent number: 6050380
    Abstract: A friction clutch for a motor vehicle is embodied with a centrifugal mass device, which has at least one mass-bearing compensating system. At least one component of the centrifugal mass device is equipped, to form the compensating system, with at least one chamber that holds, to a predetermined degree of fullness, a fluid medium, whose position in the chamber changes when a torsional vibration occurs. The effect resulting from this position change depends on the density and viscosity of the medium, on the one hand, and, on the other hand, on the arrangement of the chamber, which determines the vibrational behavior of the medium, the shape of the chamber, which determines the movement resistance, and its degree of fullness.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: April 18, 2000
    Assignee: Mannesmann Sachs AG
    Inventors: Bernd Peinemann, Reinhard Feldhaus, Matthias Fischer
  • Patent number: 6003648
    Abstract: A torque converter having a fluid vibration damping arrangement (70) for damping torsional vibrations which lead to relative torsion between an input and an output side of the torsional vibration damper by means of fluid contained in the interior (24) of the casing (12). The fluid vibration damping arrangement is implemented by at least one first blade-like projection, which is coupled in a rotationally fixed manner to a turbine impeller shell (28) of the turbine impeller (26), and extends substantially axially away from said shell and toward the clutch element (44), and at least one second blade-like projection, which is coupled in a rotationally fixed manner to the clutch element (44), preferably attached to the latter, and extends substantially axially away from the latter and toward the turbine impeller (26). The at least one first blade-like projection (74) and the at least one second blade-like projection (72) overlapping in the axial direction in certain regions.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: December 21, 1999
    Assignee: Mannesmann Sachs AG
    Inventor: Jorg Sudau
  • Patent number: 5997402
    Abstract: A power coupling mechanism having fluid dampening device with interfitting members which assist in the absorption and transmittance of stress due to torsion and thrust loads, thus reducing the size of a bearing supporting relatively rotatable parts.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: December 7, 1999
    Assignee: Exedy Corporation
    Inventors: Hirotaka Fukushima, Koji Kajitani, Hiroyoshi Tsuruta, Masanobu Fukamachi
  • Patent number: 5967899
    Abstract: A centrifugal mass device having at least two centrifugal masses which are rotatable relative to each other against the effect of elastic elements of a torsional damping device. The output-side centrifugal mass, which is more distant from a drive, e.g., the crankshaft of an internal combustion engine, is run radially as well as axially relative to the drive-side centrifugal mass via a support. The support has an axial slide bearing that borders a grease chamber containing a viscous medium, which grease chamber accommodates, at least partially, the torsional damping device. To form a seal for the grease chamber, the axial slide bearing is radially encompassed along at least a portion of its axial extension by at least one axial projection provided on at least one of the centrifugal masses, whereby the axial projection is close to but separated by a gap from an associated region of the other centrifugal mass.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: October 19, 1999
    Assignee: Mannesman Sachs AG
    Inventor: Bernhard Schierling
  • Patent number: 5935007
    Abstract: A torque transmission system includes a torsional vibration damper with a centrifugal valve separating first chamber and second chambers filled with fluid. At low engine speeds, the centrifugal valve is spring biased in a substantially closed position so that there is minimal fluid flow between the chambers, thus resulting in high stiffness and high damping for reducing resonance vibrations. As the engine speed increases, centrifugal force eventually overcomes the spring force due to increased engine speeds. Thus, at high engine speeds the centrifugal valve is open, allowing a greater amount of fluid to flow from the first chamber to the second resulting in decreased stiffness and transmissibility for more effectively reducing vibrations.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: August 10, 1999
    Assignee: Meritor Heavy Vehicle Systems, LLC
    Inventor: Jibin Yang
  • Patent number: 5931735
    Abstract: A flywheel device has a drive-side centrifugal mass and a second centrifugal mass, which is rotatable relative to the first centrifugal mass and is connected to the first centrifugal mass via a torsional damping device. At least one of the centrifugal masses has a grease chamber containing a viscous medium for accommodating, at least partially, the torsional damping device. A seal is associate with the grease chamber to hold back the viscous medium in the grease chamber. The seal is accommodated on one of the centrifugal masses and engages into the radial extension region of the other centrifugal mass. The seal extends into the grease chamber, and the side of the seal accessible to the viscous medium has an axial offset relative to the side facing the grease chamber of the wall that interacts with the seal of the centrifugal mass having the grease chamber. The axial offset is limited to the gap width, at least at the sealing point.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: August 3, 1999
    Assignee: Fichtel & Sachs AG
    Inventor: Bernhard Schierling
  • Patent number: 5873445
    Abstract: An apparatus and method of manufacturing a damping flywheel having two coaxial masses one of which is designed to be rotationally integral with a drive shaft such as the crankshaft of an internal combustion engine, while the other coaxial mass is designed to be connected with a driven shaft such as the input shaft of a gear box. The first mass includes a chamber that may be at least partially filled with a pasty or viscous agent and houses a circumferentially acting resilient member disposed between the two coaxial masses. The agent is deposited at the outer periphery of the first mass before the chamber is closed.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: February 23, 1999
    Assignee: Valeo
    Inventors: Andre Haberbusch, Alessandro Tessitore
  • Patent number: 5868232
    Abstract: In a clutch apparatus, a clutch cover assembly can be reused after replacement of a clutch disk assembly. The clutch apparatus includes an input flywheel and a clutch cover assembly. The input flywheel is provided at its outer peripheral surface with a plurality of engagement portions which are circumferentially spaced from each other and project radially outwardly. The clutch cover assembly has a clutch cover, a fixing member, a pressure plate and a biasing member. The clutch cover is provided at its outer periphery with a bent engagement portion which is circumferentially engageable with the engagement portion of the flywheel for preventing axial movement relative to the flywheel. The fixing member is removable, and fixes the flywheel and the clutch cover for integral rotation. The pressure plate is disposed between the clutch cover and the flywheel. The biasing member is supported by the inner peripheral portion of the clutch cover, and biases the pressure plate toward the flywheel.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: February 9, 1999
    Assignee: Exedy Corporation
    Inventor: Hirotaka Fukushima
  • Patent number: 5860501
    Abstract: A clutch device separates a non-changing component and a changing component of power generated by a driving source, and transmits the non-changing component and the changing component of power so separated to separate driven bodies, respectively. Power generated by a driving source is preferably subjected to form conversion by a power form converter and is then separated into a non-changing component and a changing component by a power separator. The non-changing component of power so separated is transmitted to a first driven body by a non-changing component transmitter while the changing component of power so separated is transmitted to a second driven body by a changing component transmitter. A fluid pump can be used as the power form transmitter, and an outlet flow rate regulating valve of the fluid pump can be used as the power separator. Control of the second driven body can be made easily by smoothing the changing component of power separated by using a smoother.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: January 19, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kiyohito Murata
  • Patent number: 5743371
    Abstract: A clutch disc assembly interposed between an input side rotary member and an output side member has a hub, disc-like plates, a friction member, an elastic member and a viscous damper mechanism. The hub is connectable for co-rotation with the output side member. The hub has a flange on its outer circumference. The disc-like plates are rotatably mounted on the hub. The friction member is connected to said disc-like plates, for frictional engagement with the input side rotary member. The elastic member is for elastically connecting the flange and the disc-like plates whereby the flange and the disc-like plates are rotatable with respect to each other. The viscous damper mechanism includes a fluid medium, for displacing the fluid medium through restrictions in response to angular movements of the disc-like plates and the flange with respect to each other.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: April 28, 1998
    Assignee: Kabushiki Kaisha Daikin Seisakusho
    Inventors: Yasushi Takehira, Shinichi Noda
  • Patent number: 5730656
    Abstract: A viscous resistance generation mechanism includes a first flywheel, a plurality of sliders and a driven plate. The first flywheel includes an arcuate fluid filled chamber, with the plurality of sliders disposed within the fluid filling chamber and movable in the circumferential direction. The driven plate is formed with a plurality of protrusion which are inserted into each of the plurality of sliders. The plurality of sliders are connected to the driven plate, and the interior of each of said sliders is sealed from the fluid filled chamber. Small torsional vibrations are dampened by large gaps between the fluid filled chamber and the plurality of sliders, and large torsional vibrations are dampened by small gaps between the plurality of protrusions and the interior of each of the plurality of sliders.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: March 24, 1998
    Assignee: Exedy Corporation
    Inventor: Kozo Yamamoto
  • Patent number: 5695035
    Abstract: A power coupling mechanism having fluid dampening device with interfitting members which assist in the absorption and transmittance of stress due to torsion and thrust loads, thus reducing the size of a bearing supporting relatively rotatable parts.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: December 9, 1997
    Assignee: Exedy Corporation
    Inventors: Hirotaka Fukushima, Koji Kajitani, Hiroyoshi Tsuruta, Masanobu Fukamachi
  • Patent number: 5669478
    Abstract: A flywheel with two centrifugal masses has a secondary centrifugal mass assembled from two individual parts, wherein the first part is actively connected to a torsion damping device, and the second part has a friction surface for a friction clutch. To increase the useful life of the flywheel system, the two parts of the secondary centrifugal mass are held at a distance from one another, and are connected to one another in their radially inner area essentially only by means of axially projecting spacer elements, which spacer elements are distributed circumferentially, and by means of rivets or screws. The rear side of the second part of the secondary centrifugal mass can thus be air cooled by the system of air cooling passages.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: September 23, 1997
    Assignee: Fichtel & Sachs AG
    Inventors: Bernhard Schierling, Rudolf Bauerlein, Cora Carlson, Hilmar Gobel
  • Patent number: 5667053
    Abstract: The torsion damper comprises a first rotating element (12) delimiting the greater part of a sealed annular housing (30) which receives a resilient damper (32) and a lubricating agent for this damper. A second rotating element (14) Comprises a disc (36) which penetrates into the sealed housing (30). Sealing rings close the housing (30) sealingly. Each sealing ring is mounted in axial compression between two support surfaces, one of which consists of an annular ridge carried by the disc (36), while the other consists of a shoulder formed on the other rotating element.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: September 16, 1997
    Assignee: Valeo
    Inventors: Dieter Rohrle, Ciriaco Bonfilio
  • Patent number: 5655368
    Abstract: Described is a viscous damper for a hydraulic power transmission with a lockup clutch. The viscous damper is composed of at least one blade mounted on at least one element of the hydraulic power transmission so that said at least one blade is located in an oil filled in said hydraulic power transmission and controls occurrence of self-excited vibrations. Preferably, plural blades are mounted on a wall of at least one of mutually opposing two elements of the hydraulic transmission, said wall of said at least one element being locate opposite a wall of the other element.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: August 12, 1997
    Assignee: NSK-Warner K.K.
    Inventors: Yasuto Koike, Tatsuro Miyoshi, Masao Shoji
  • Patent number: 5622244
    Abstract: A bypass clutch for use in an hydrodynamic torque converter (10) includes a viscous coupling (30) driveably engaged with the torque converter input shell (12) and turbine (18), and a friction clutch (24) driveably engaged with said input shell (12) and turbine (18) in parallel to the viscous coupling (30).
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: April 22, 1997
    Assignee: Ford Motor Company
    Inventor: James E. Hansen
  • Patent number: 5617940
    Abstract: A power coupling mechanism having fluid dampening device with interfitting members which assist in the absorption and transmittance of stress due to torsion and thrust loads, thus reducing the size of a bearing supporting relatively rotatable parts.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: April 8, 1997
    Assignee: Exedy Corporation
    Inventors: Hirotaka Fukushima, Koji Kajitani, Hiroyoshi Tsuruta, Masanobu Fukamachi