Biasing Means Patents (Class 192/213.22)
  • Patent number: 11428291
    Abstract: A damper device for transmitting power to an output-side member is disclosed. The damper device includes input-side and output-side rotors, a plurality of elastic members, and a hysteresis generating mechanism. The input-side rotor, to which power is inputted, is rotatable. The output-side rotor is rotatable relative to the input-side rotor. The output-side rotor includes a hub and a plurality of flanges. The hub is coupled to the output-side member. The plurality of flanges extend radially outward from the hub. The plurality of flanges are disposed at predetermined intervals in a circumferential direction. The plurality of elastic members are disposed circumferentially between the plurality of flanges, and elastically couple the input-side rotor and the output-side rotor in the circumferential direction.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: August 30, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Yusuke Okamachi
  • Patent number: 10781882
    Abstract: A torque fluctuation absorbing apparatus absorbs torque fluctuations occurring in a torque transmission pathway from an input side rotating member to an output side rotating member. The apparatus includes: a vibration absorbing member in which elastic members are coupled in series, and which absorbs torque fluctuations; circular outer contour plates coupled to the input side rotating member, and disposed to be spatially separated from one another in an axial direction of the output side rotating member; a hub member including a boss section coupled to the output side rotating member, and a flange section provided on the boss section and disposed between the outer contour plates; and a circular intermediate plate disposed between the flange section and the outer contour plates, coupled between the elastic members, and transmitting a torque from one elastic member to another elastic member.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 22, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tsutomu Sekine, Miki Torii, Moritaka Shibata, Satoshi Nakagaito, Masami Okumaru
  • Patent number: 10443659
    Abstract: A clutch disc assembly includes a hub flange, an output hub, an intermediate hub, a plurality of first elastic members, and a plurality of second elastic members. Power from an engine is input into the hub flange. The output hub can be coupled to an input shaft of the transmission. The intermediate hub is arranged between the hub flange and the output hub in a diameter direction such that relative rotation with the hub flange by an angle greater than or equal to a first angular range is prevented, and such that relative rotation with the output hub by an angle greater than or equal to a second angular range is prevented. The plurality of first elastic members couple the hub flange and the intermediate hub elastically in a rotation direction. The plurality of second elastic members couple the intermediate hub and the output hub elastically in the rotation direction.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 15, 2019
    Assignee: EXEDY CORPORATION
    Inventors: Hirokazu Wakabayashi, Yoshitaka Kubota, Kazuki Hashimoto
  • Patent number: 10352396
    Abstract: A damper device includes a first rotary member, a second rotary member, a plurality of coil springs, an intermediate member and a slide spring. The first rotary member is a member into which a power of an engine is inputted. The second rotary member is disposed to be rotatable with respect to the first rotary member. The plurality of coil springs are configured to be compressed between the first rotary member and the second rotary member. The intermediate member is configured to engage the plurality of coil springs and couple the plurality of coil springs together. The slide spring is disposed axially between the first rotary member and the intermediate member. The slide spring is configured to slide against the first rotary member. The slide spring is configured not to slide with respect to the intermediate member.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 16, 2019
    Assignee: EXEDY Corporation
    Inventors: Hiroshi Uehara, Yoshinari Yoshimura, Takeshi Senoue
  • Patent number: 10337565
    Abstract: A driven damper assembly, comprises a first main-damper cover plate comprising an inclined portion. The inclined portion comprises a notch. A first plane passes through the first pre-damper cover plate. A second plane passes through the first main-damper cover plate and is parallel to the first plane. The notch comprises a first wall and a second wall. The first wall is not parallel to the second wall. The inclined portion extends away from the second plane at an angle greater than zero degrees away from the second plane and less than ninety degrees away from the second plane. The first pre-damper cover plate comprises a tab with a first portion extending outwardly at an angle greater than zero degrees away from the first plane and less than ninety degrees away from the first plane, wherein the tab engages the notch at the first wall and the second wall.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: July 2, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Luiz Filipe Silva Pereira, Michael Lee Bassett
  • Patent number: 9963140
    Abstract: A hybrid module (2) with a vibration reducing system (4) which is coupled between an output side (8) and an input side (6) of the hybrid module (2). The vibration reducing system (4) is configured to reduce an injected torsional irregularity, wherein the vibration reducing system (4) has a preload that is greater than an assembly-related preload. The hybrid module (2) also includes an electric machine (10) which is coupled to the input side (6) or to the output side (8) of the hybrid module (2). The electric machine (10) is configured to introduce a torque at the input side (6) or at the output side (8) which is directed against a rotational irregularity coming from a drive arrangement (5) in order to reduce the rotational irregularity.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: May 8, 2018
    Assignee: ZF Friedrichshafen AG
    Inventor: Andreas Orlamünder
  • Patent number: 8727086
    Abstract: A torque converter damper, including: an output hub; a first side plate arranged for rotational connection to a lock-up clutch and a turbine of the torque converter. Includes first and second intermediate flange plates; a flange connected to the output hub; springs engaged with the first side plate and the intermediate flange plates; springs engaged with the intermediate flange plates and with the flange; and a resilient element creating frictional contact between first and second components of the torque converter damper. Relative rotation of the first and second components at the frictional contact attenuates vibration at the output hub. The first and second components are rotatable with respect to each other. Rotation of the first component is fixed to rotation of the hub. Rotation of the second component is arranged to be fixed to rotation of the turbine. The hub is arranged to be rotatable with respect to the turbine.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: May 20, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Craig Kneidel, Markus Steinberger
  • Patent number: 8127905
    Abstract: A series damper, including: a first damper with a flange and a cover plate; and a second damper with first and second cover plates and a flange. The flange and the cover plate for the first damper are rotationally frictionally engaged and the flange for the second damper rotates free of frictional engagement with the first and second cover plates. The series damper includes a resilient element arranged to cause the frictional engagement of the flange and the cover plate for the first damper. In some aspects, the resilient element is frictionally engaged with the cover plate for the first damper and is arranged to frictionally engage a turbine hub for a torque converter. In some aspects, the resilient element is rotationally connected to the flange for the first damper. In some aspects, the flange for the first damper includes the second cover plate for the second damper.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: March 6, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Craig Kneidel, Andre Soto, Patrick Lindemann
  • 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: 20100243404
    Abstract: A torque fluctuation absorber includes: a first plate member, a second plate member, arranged axially with a predetermined distance from the first plate member, a third plate member which rotates integrally with the first plate member, and is arranged axially with a predetermined distance from the second plate member; slide members located between the second plate member and the third plate member; and an elastic member which is supported by the first plate member and biases the second plate member towards the plurality of slide members. The plurality of slide members are configured to generate a first hysteresis torque when a torsion angle between the second plate member and the third plate member is within a predetermined range, and to generate a second hysteresis torque greater than the first hysteresis torque when the torsion angle exceeds the predetermined range.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Tomohiro SAEKI, Makoto Takeuchi, Satoshi Nakagaito, Atsushi Yamazumi
  • Patent number: 6872142
    Abstract: Coil springs 33 and 36 couple input and output rotary members 2 and 3 together such that they can rotate relative to each other. The coil springs 33 and 36 have a torsion characteristic having a positive region and a negative region that has a lower rigidity than the positive region. A second friction generating section 71 is arranged such that friction is generated rotationally-between the input rotary member 2 and the output rotary member 3 due to the elastic force of the coil springs 33 and 36 when the two rotary members 2 and 3 rotate relative to each other. A friction suppressing mechanism secures rotational gaps 91 and 92 on only the negative side of the torsion characteristic. These rotational gaps serve to prevent the elastic force of the coil springs 33 and 36 from acting on the second friction generating section 71 within a prescribed angular range.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: March 29, 2005
    Assignee: Exedy Corporation
    Inventors: Tatsuyuki Aoki, Hiroshi Uehara
  • Patent number: 6857514
    Abstract: A damper mechanism is provided to suppress the enlargement of a prescribed angle in a damper mechanism. A clutch disk assembly 1 has an input rotary member 2, a spline hub 3, a damper section 4, a large friction mechanism 13, a friction suppressing mechanism, and an elastic member 104. The spline hub 3 is arranged to rotate relative to the input rotary member 2. The damper section 4 couples the input rotary member 2 and the spline hub 3 together rotationally. The large friction mechanism 13 can generate friction when the input rotary member 2 and the spline hub rotate relative to each other. The friction suppressing mechanism is a rotational gap ?ACp for preventing the large friction mechanism operating within a prescribed angular range. The elastic member 104 softens the impact between the members that touch against each other at the end of the prescribed angular range.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: February 22, 2005
    Assignee: Exedy Corporation
    Inventors: Yasuyuki Hashimoto, Michitomo Masaki, Tatsuyuki Aoki
  • Patent number: 6837354
    Abstract: A clutch disk assembly 1 has a pair of axially facing plates 12 and 13. A relatively rotatable flange 8 is provided between the plates 12 and 13. A first elastic member 30 exhibits high rigidity on the positive side of the torsional characteristics. A second elastic member 31 is provided to operate in parallel with first elastic member 30 to realize a low rigidity on the negative side of the torsional characteristics. The stop pins 22 affix plates 12 and 13 together. The stop pins 22 and notches 8c are provided on the outer periphery of the flange 8 constitute a stopper mechanism 86 for regulating the relative rotation between the plates 12 and 13 and the flange 8. The stopper mechanism 86 is located on radially outside the second elastic members 31. The stop pins 22 are movable on the outer periphery of the second elastic members 31.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: January 4, 2005
    Assignee: Exedy Corporation
    Inventor: Hiroshi Uehara
  • Publication number: 20040129525
    Abstract: A damper mechanism is provided to suppress the enlargement of a prescribed angle in a damper mechanism. A clutch disk assembly 1 has an input rotary member 2, a spline hub 3, a damper section 4, a large friction mechanism 13, a friction suppressing mechanism, and an elastic member 104. The spline hub 3 is arranged to rotate relative to the input rotary member 2. The damper section 4 couples the input rotary member 2 and the spline hub 3 together rotationally. The large friction mechanism 13 can generate friction when the input rotary member 2 and the spline hub rotate relative to each other. The friction suppressing mechanism is a rotational gap &thgr;ACp for preventing the large friction mechanism operating within a prescribed angular range. The elastic member 104 softens the impact between the members that touch against each other at the end of the prescribed angular range.
    Type: Application
    Filed: December 2, 2003
    Publication date: July 8, 2004
    Applicant: Exedy Corporation
    Inventors: Yasuyuki Hashimoto, Michitomo Masaki, Tatsuyuki Aoki
  • Patent number: 6708810
    Abstract: A clutch disk assembly 1 is provided with a hub flange 7, a pair coil springs 8, a pair of coil springs 9, an intermediate rotary member 10, and a pair of plates 12 and 13. The hub flange 7 has a boss 7a and an integrally formed flange 7b. The flange 7b has a pair of first window holes 7c and a pair of second window holes 7b. The two coil springs 8 are arranged respectively in the pair of first window holes 7a. The more rigid two coil springs 9 are arranged respectively in the pair of second window holes 7b and window parts 25 of the plates 12 and 13. The intermediate rotary member 10 couples the coil springs 8 and the coil springs 9 together in the rotational direction. The two plates 12 and 13 are arranged on both axially facing sides of the flange 7b.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: March 23, 2004
    Assignee: Exedy Corporation
    Inventor: Hiroshi Uehara
  • Patent number: 6659876
    Abstract: A clutch disk assembly has an input rotary member 2, a spline hub 3, a damper section 4, a friction mechanism 13, and a friction suppressing mechanism. The damper section 4 has second springs 8 and a torsion characteristic having a positive side corresponding to when the input rotary member 2 is twisted in a rotational drive direction with respect to the spline hub 3 and a negative side corresponding to when the input rotary member 2 is twisted in an opposite direction. The friction mechanism 13 can generate friction when the input rotary member 2 and the spline hub 3 undergo relative rotation and the second springs 8 exert an elastic force. The friction suppressing mechanism secures a rotational gap &thgr;ACn on only the positive or negative side preventing the second spring 8 from acting on the friction mechanism within a prescribed angular range.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: December 9, 2003
    Assignee: Exedy Corporation
    Inventor: Yasuyuki Hashimoto
  • Patent number: 6612933
    Abstract: A damper mechanism is provided to achieve preferable vibration damping performances by providing different characteristics on positive and negative sides of torsion characteristics. In a damper mechanism of a clutch disk assembly 1, a plurality of coil springs 33 and 36 are arranged so that they are compressed when plates 12 and 13 rotate relatively to a hub 6 such that a higher torsional rigidity occurs on the positive side of the torsional angle range than the negative side. A friction generating mechanism 69 is arranged to generate friction when the plates 12 and 13 rotate relatively to the hub 6. The friction generating mechanism 69 generates a larger friction on the positive side of the torsion angle range than the negative side.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: September 2, 2003
    Assignee: Exedy Corporation
    Inventor: Hiroshi Uehara
  • Publication number: 20030085097
    Abstract: A clutch disk assembly 1 is provided with a hub flange 7, a pair coil springs 8, a pair of coil springs 9, an intermediate rotary member 10, and a pair of plates 12 and 13. The hub flange 7 has a boss 7a and an integrally formed flange 7b. The flange 7b has a pair of first window holes 7c and a pair of second window holes 7b. The two coil springs 8 are arranged respectively in the pair of first window holes 7a. The more rigid two coil springs 9 are arranged respectively in the pair of second window holes 7b and window parts 25 of the plates 12 and 13. The intermediate rotary member 10 couples the coil springs 8 and the coil springs 9 together in the rotational direction. The two plates 12 and 13 are arranged on both axially facing sides of the flange 7b.
    Type: Application
    Filed: October 24, 2002
    Publication date: May 8, 2003
    Applicant: EXEDY CORPORATION
    Inventor: Hiroshi Uehara
  • Patent number: 6488139
    Abstract: An input rotary member 2 and an output rotary member 3 are circumferentially and elastically coupled together via first and second damper mechanisms 4 and 5 arranged in parallel. The first damper mechanism 4 includes first springs 8. The first springs 8 are arranged between the input and output rotary members 2 and 3 for transmitting torque therebetween. Compression of the first springs 8 does not start before a torsion angle reaches a first torsion angle 1. The second damper mechanism 5 includes second springs 13 and a high hysteresis torque generating mechanism 15 arranged in series. The second springs 13 can be compressed only within a range of a torsion angle &thgr;AC smaller than the first torsion angle &thgr;1.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: December 3, 2002
    Assignee: Exedy Corporation
    Inventor: Kozo Yamamoto
  • Publication number: 20020166749
    Abstract: The invention relates to a torsional damping device which is mounted between two rotating parts in order to transmit a rotating torque in such a way that the vibrations and oscillations of the torque are dampened. Said device comprises two washers (16, 18) which are coaxial to the rotating parts, means (12, 14, 20) for rotationally connecting the washers to the two rotating parts with a predetermined circumferential play and elastic mechanisms (26) with a circumferential action which are mounted between the washers, in the receptacles (24) of said washers, these elastic mechanisms acting on the washers so that they rotate in opposite directions and are stopped on the means connecting them to the rotating parts. The invention is particularly suitable for friction clutches for motor vehicles.
    Type: Application
    Filed: October 31, 2001
    Publication date: November 14, 2002
    Inventors: Eric Bertrand, Patrick Luczak
  • Patent number: 6446780
    Abstract: A torsional vibration damper for arrangement in a clutch disk includes a hub element and a hub-disk arrangement arranged on the hub element. The hub-disk arrangement has a first transmission arrangement and a second transmission arrangement which is rotatable about an axis of rotation relative to the first transmission arrangement. A first damping arrangement acts between the first and the second transmission arrangement. A third transmission arrangement is connected in a rotationally fixed manner to the hub element. A second damping arrangement acts between the third transmission arrangement and one of the first and second transmission arrangements and allows a relative rotation between the third transmission arrangement and the one of the first and second transmission arrangements. Furthermore, a first friction device acts between the third transmission arrangement and at least one of the first and second transmission arrangements.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: September 10, 2002
    Assignee: Mannesmann Sachs AG
    Inventor: Rüdiger Herbst
  • Patent number: 6375575
    Abstract: A clutch disk assembly (1) includes an input rotary member (2), an output rotary member (3), a damper mechanism (4, 5) and a large friction mechanism (13). The damper mechanism couples the input and output rotary members (2) and (3) together in a rotating direction. The damper mechanism exhibits torsion characteristics having differing first stage and second stage responses such that in the second stage a higher degree of rigidity is exhibited than in the first stage. In the second stage when small levels of vibrations are dampened, the response characteristics in response to positive direction rotary displacement between the input and output rotary members differs from the response characteristics exhibited as a result of negative direction relative rotary displacement. Specifically, in the positive direction, the large friction mechanism (13) is prevented from operating in a first angular range within the second stage.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: April 23, 2002
    Assignee: Exedy Corporation
    Inventor: Yasuyuki Hashimoto
  • Patent number: 6293383
    Abstract: The invention relates to a torsion vibration damper having a main damper containing energy accumulators and a friction device, as well as a preliminary damper containing energy accumulators and a friction device.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: September 25, 2001
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Joachim Hoffmann, Steffen Lehmann, Andreas Posch
  • Patent number: 6283865
    Abstract: A clutch or damper disk assembly 1 is provided with a dampening mechanism 4 that relieves rising of a hysteresis torque, and thereby suppresses generation of noises and vibrations in a dampening mechanism having multi-stage characteristics. The clutch or damper disk assembly 1 includes an input rotary member 2, a hub 3 and a dampening mechanism 4. The dampening mechanism 4 is disposed between the input rotary member 2 and the hub 3 for transmitting a torque therebetween and dampening torsional vibrations. In the four stage embodiment, the dampening mechanism 4 includes a set of springs 21 (first stage), a set of springs 206 (second stage), a set of springs 16 (third stage), a set of springs 17 (fourth stage) and a pair of friction mechanisms 241 and 242. The springs 206 are disposed so as to operate in series with the springs 21. The springs 206 have a higher rigidity than the springs 21. The springs 16 are disposed so as to operate in series with respect to the springs 206.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: September 4, 2001
    Assignee: Exedy Corporation
    Inventors: Hideki Hashimoto, Shigetomo Ohshitamoto, Takashi Harada
  • Patent number: 6270417
    Abstract: A clutch disk assembly (1) includes an input rotary member (2), an output rotary member (3), a damper mechanism (4, 5) and a large friction mechanism (13). The damper mechanism couples the input and output rotary members (2) and (3) together in a rotating direction. The damper mechanism exhibits torsion characteristics having differing first stage and second stage responses such that in the second stage a higher degree of rigidity is exhibited than in the first stage. In the second stage when small levels of vibrations are dampened, the response characteristics in response to positive direction rotary displacement between the input and output rotary members differs from the response characteristics exhibited as a result of negative direction relative rotary displacement. Specifically, in the positive direction, the large friction mechanism (13) is prevented from operating in a first angular range within the second stage.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: August 7, 2001
    Assignee: Exedy Corporation
    Inventor: Yasuyuki Hashimoto
  • Patent number: 6264563
    Abstract: A clutch disk assembly includes an input rotary member 2, an output rotary member 3, damper mechanisms 4 and 5, a friction mechanism 13 and a friction suppressing mechanism. Damper mechanisms 4 and 5 include a plurality of elastic members 7 and 8 which are arranged between the input and output rotary members 2 and 3 and are circumferentially compressed when the members 2 and 3 rotate relatively to each other. The damper mechanisms 4 and 5 exhibit torsion characteristics in a first region and a second region of relative rotary displacement where the dampening rigidity within the second region is greater than in the first region. The friction mechanism 13 is adapted to generate frictional resistance (hysteresis torque) in the second region of the relative rotary displacement within the clutch disk assembly.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: July 24, 2001
    Assignee: Exedy Corporation
    Inventor: Hiroshi Mizukami
  • Patent number: 6244963
    Abstract: A dampening disk assembly is provided with a dampening mechanism 108. The dampening mechanism 108 has a simplified structure with a spring and a friction generating mechanism, which provides a characteristic of a first step in a separated hub type dampening disk assembly. The dampening disk assembly is also provided with an output hub 104, a pair of input plates 112 and 113, an intermediate plate 109 and a first elastic member 106. The intermediate plate 109 is disposed between the pair of input plates 112 and 113. The first elastic member 106 couples the pair of input plates 112 and 113 and the intermediate plate 109 elastically in a rotary direction. The output hub 104 is disposed on an inner circumferential side of the pair of input plates 112 and 113 and the intermediate plate 109. The dampening mechanism 108 couples the output hub 104 and the intermediate plate 109 elastically in a rotary direction, and includes a first and second portion 131 and 130 and an elastic portion 107.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: June 12, 2001
    Assignee: Exedy Corporation
    Inventors: Hideki Hashimoto, Takashi Harada, Keisuke Fujioka
  • Patent number: 6209701
    Abstract: A clutch disk assembly 1 includes a second plate 13, an output rotary member 4, an intermediate body 3, an intermediate member 9b, second springs 10, third springs 5 and a damper 8. The intermediate body 3 is disposed radially outside the output rotary member 4. The intermediate member 9b is disposed near the output rotary member 4 and the intermediate body 3. The second plate 13 is located on a second axial side of the intermediate body 3. The second springs 10 circumferentially and elastically couple the plate 9b and the intermediate body 3 together. The third springs 5 circumferentially and elastically couple the intermediate body 3 and the second plate 13 together. The damper 8 is axially shifted from the intermediate body 3. The damper 8 has first springs 7 circumferentially and elastically coupling the output rotary member 4 and the plate 9b together.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: April 3, 2001
    Assignee: Exedy Corporation
    Inventors: Hideki Hashimoto, Keisuke Fujioka
  • Patent number: 6186897
    Abstract: A torsion damper for a motor vehicle clutch comprising, between an entrance component (11) and an exit component (12), a pre-damper (C), an intermediate damper (B) and a main damper (A). The axially operating elastic means (26B) included in the intermediate damper (B) are radially arranged between the elastic members with said intermediate damper (B) circumferentially operating elastic members (23B) and those of pre-damper (C).
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: February 13, 2001
    Assignee: Valeo
    Inventors: Michel Graton, Fabrice Tauvron
  • Patent number: RE37465
    Abstract: A torsion damping apparatus between the crankshaft of the engine and the input shaft of the change-speed transmission of a motor vehicle has two flywheels one of which is driven by the crankshaft and the other of which drives the input shaft by way of a friction clutch which generates heat. In order to prevent the transfer of heat from the friction clutch to the antifriction bearing between the flywheels, which are rotatable relative to each other against the opposition of a damper, the bearing is at least partially surrounded by a thermal barrier of synthetic plastic, ceramic or metallic material which prolongs the useful life of the bearing and enhances the torsion damping action of the damper. The thermal barrier can constitute or form part of the damper.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: December 11, 2001
    Assignee: LuK Lamellen und Kupplungsbau GmbH
    Inventors: Wolfgang Reik, Hans-Dieter Elison
  • Patent number: RE38258
    Abstract: A torsion damping apparatus between the crankshaft of the engine and the input shaft of the change-speed transmission of a motor vehicle has two flywheels one of which is driven by the crankshaft and the other of which drives the input shaft by way of a friction clutch which generates heat. In order to prevent the transfer of heat from the friction clutch to the antifriction bearing between the flywheels, which are rotatable relative to each other against the opposition of a damper, the bearing is at least partially surrounded by a thermal barrier of synthetic plastic, ceramic or metallic material which prolongs the useful life of the bearing and enhances the torsion damping action of the damper. The thermal barrier can constitute or form part of the damper.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: September 30, 2003
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Wolfgang Reik, Hans-Dieter Elison
  • Patent number: RE38655
    Abstract: The invention relates to a torsion vibration damper having a main damper containing energy accumulators and a friction device, as well as a preliminary damper containing energy accumulators and a friction device.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: November 23, 2004
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Joachim Hoffmann, Steffen Lehmann, Andreas Posch