Patents by Inventor Yusuke OKAMACHI

Yusuke OKAMACHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11359694
    Abstract: A damper device includes a first rotor disposed to be rotatable, a second rotor rotatable relative to the first rotor, and a plurality of elastic members configured to elastically couple the first rotor and the second rotor in a circumferential direction. The first rotor includes a first plate and a second plate. The first and second plates are axially opposed to each other, and fixed to be immovable in both axial and circumferential directions. The first plate includes a plurality of first holding portions and a plurality of bent portions. The plurality of first holding portions hold the plurality of elastic members. The plurality of bent portions are provided on an outer peripheral end of the first plate, and bent toward the second plate. The second plate includes a plurality of second holding portions holding the plurality of elastic members together with the plurality of first holding portions.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: June 14, 2022
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Yusuke Okamachi
  • Publication number: 20220010794
    Abstract: A rotary device includes a first rotor, a second rotor, a centrifugal element, and a first rolling member. The first rotor includes an accommodation portion having first and second guide surfaces. The first and second guide surfaces face both sides in a circumferential direction. The first rotor is disposed to be rotatable. The second rotor is disposed to be rotatable with and relative to the first rotor. The centrifugal element is disposed within the accommodation portion. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the first or second rotor. The centrifugal element rotates about a rotational axis thereof in radial movement thereof. The first rolling member is disposed between the first guide surface and the centrifugal element. The first rolling member rolls on the first guide surface in accordance with rotation of the centrifugal element about the rotational axis thereof.
    Type: Application
    Filed: June 7, 2021
    Publication date: January 13, 2022
    Inventors: Yusuke OKAMACHI, Koichi HIGUCHI
  • Publication number: 20210131525
    Abstract: A torque fluctuation inhibiting device includes a first rotor including an accommodation portion, a second rotor, a centrifugal element, a guide member, and a cam mechanism. The first rotor is rotatable. The second rotor is rotatable with the first rotor and relative to the first rotor. The centrifugal element is radially movable in the accommodation portion at gaps produced circumferentially therebetween, and receives a centrifugal force generated by rotation of the first or second rotor. The guide member guides radial movement of the centrifugal element. The guide member is movable and rollable between both circumferential end surfaces of the centrifugal element and wall surfaces provided in the accommodation portion to be opposed to the both circumferential end surfaces. The cam mechanism receives the centrifugal force acting on the centrifugal element, and converts the centrifugal force into a circumferential force to reduce rotational phase difference between the first and second rotors.
    Type: Application
    Filed: June 9, 2020
    Publication date: May 6, 2021
    Inventors: Koichi HIGUCHI, Yusuke OKAMACHI
  • Patent number: 10989290
    Abstract: A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an input member, a pair of inertia rings and an inertia block. The input member, to which a torque is inputted, is disposed to be rotatable. The pair of inertia rings is disposed axially on the both sides of the input member. The pair of inertia rings is disposed to be rotatable relative to the input member. The pair of inertia rings is unitarily rotated with each other. The inertia block is disposed between the pair of inertia rings. The inertia block is attached to the pair of inertia rings.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 27, 2021
    Assignee: EXEDY CORPORATION
    Inventors: Yusuke Tomita, Yusuke Okamachi
  • 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
  • Publication number: 20200292006
    Abstract: A damper device for transmitting power from a power source therethrough to an output-side member is disclosed. The damper device includes an input-side rotor, an output-side rotor, a plurality of elastic members, an intermediate rotor and a hysteresis generating mechanism. The input-side rotor and the output-side rotor are rotatable relative to each other. The plurality of elastic members elastically couple the input-side rotor and the output-side rotor in a circumferential direction. The intermediate rotor is rotatable relative to the input-side rotor and the output-side rotor, and actuates at least two of the plurality of elastic members in series. The hysteresis generating mechanism includes a friction member slidable in contact with the input-side rotor, the output-side rotor and the intermediate rotor, and generates a hysteresis torque in elastic deformation of the plurality of elastic members.
    Type: Application
    Filed: January 21, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292030
    Abstract: A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an input member, an elastic member, a mass body and a centrifugal element. The input member includes a pair of input plates disposed in axial alignment. The input member is disposed to be rotatable. The elastic member is held by the pair of input plates. The mass body is disposed to be rotated with the input member and be rotatable relative to the input member. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the input member. The centrifugal element is disposed between the pair of input plates.
    Type: Application
    Filed: January 17, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292005
    Abstract: A damper device for transmitting power to an output-side member is disclosed. The damper device includes an input-side rotor, an output-side rotor, a plurality of elastic members, an intermediate rotor, and a first hysteresis generating mechanism. The input-side rotor, to which the power is inputted, is disposed to be rotatable. The output-side rotor is rotatable relative to the input-side rotor. The plurality of elastic members are configured to elastically couple the input-side rotor and the output-side rotor in a circumferential direction. The intermediate rotor is configured to actuate at least two of the plurality of elastic members in series. The intermediate rotor is rotatable relative to the input-side rotor and the output-side rotor. The first hysteresis generating mechanism is configured to apply a hysteresis torque to the intermediate rotor in elastic deformation of the plurality of elastic members.
    Type: Application
    Filed: January 16, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292044
    Abstract: A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an input member, a pair of inertia rings and an inertia block. The input member, to which a torque is inputted, is disposed to be rotatable. The pair of inertia rings is disposed axially on the both sides of the input member. The pair of inertia rings is disposed to be rotatable relative to the input member. The pair of inertia rings is unitarily rotated with each other. The inertia block is disposed between the pair of inertia rings. The inertia block is attached to the pair of inertia rings.
    Type: Application
    Filed: January 17, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292029
    Abstract: A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an elastic member, an input member, a mass body and a centrifugal element. The input member is a member to which a torque is inputted through the elastic member. The input member is disposed to be rotatable. The mass body is disposed to be rotated with the input member and be rotatable relative to the input member. The centrifugal element is disposed radially outside the elastic member. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the input member.
    Type: Application
    Filed: January 16, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292008
    Abstract: A torque limiter device for limiting a torque transmitted between a power source-side member and an output-side member is disclosed. The torque limiter device includes a cover, a friction disc and an urging member. The cover includes a coupling portion, a tubular portion and a support portion. The coupling portion is coupled to the power source-side member. The tubular portion axially extends from the coupling portion. The support portion extends from the tubular portion to an inner peripheral side. The friction disc is accommodated in an inner peripheral space of the tubular portion of the cover, and is pressed toward the power source-side member. The urging member is supported by the support portion of the cover, and urges the friction disc toward the power source-side member.
    Type: Application
    Filed: January 21, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292027
    Abstract: A damper device includes a first rotor disposed to be rotatable, a second rotor rotatable relative to the first rotor, and a plurality of elastic members configured to elastically couple the first rotor and the second rotor in a circumferential direction. The first rotor includes a first plate and a second plate. The first and second plates are axially opposed to each other, and fixed to be immovable in both axial and circumferential directions. The first plate includes a plurality of first holding portions and a plurality of bent portions. The plurality of first holding portions hold the plurality of elastic members. The plurality of bent portions are provided on an outer peripheral end of the first plate, and bent toward the second plate. The second plate includes a plurality of second holding portions holding the plurality of elastic members together with the plurality of first holding portions.
    Type: Application
    Filed: January 16, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Publication number: 20200292028
    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: Application
    Filed: January 16, 2020
    Publication date: September 17, 2020
    Inventors: Yusuke TOMITA, Yusuke OKAMACHI
  • Patent number: 10260612
    Abstract: A device includes a front cover, a torque converter main body, a lock-up device, and a dynamic damper. The dynamic damper is fixed to an output plate of the lock-up device. The dynamic damper has a base plate, an inertial body that includes inertia rings and lid members, and an elastic unit. The base plate is fixed to the output plate. The inertial body can rotate relative to the base plate. The elastic unit can generate a variable hysteresis torque according to a relative rotation angle difference between the base plate and the inertial body, and couples the base plate and the inertial body elastically in a rotation direction.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: April 16, 2019
    Inventors: Yuki Kawahara, Yusuke Okamoto, Yusuke Okamachi
  • Publication number: 20170234416
    Abstract: A device includes a front cover, a torque converter main body, a lock-up device, and a dynamic damper. The dynamic damper is fixed to an output plate of the lock-up device. The dynamic damper has a base plate, an inertial body that includes inertia rings and lid members, and an elastic unit. The base plate is fixed to the output plate. The inertial body can rotate relative to the base plate. The elastic unit can generate a variable hysteresis torque according to a relative rotation angle difference between the base plate and the inertial body, and couples the base plate and the inertial body elastically in a rotation direction.
    Type: Application
    Filed: January 23, 2015
    Publication date: August 17, 2017
    Inventors: Yuki KAWAHARA, Yusuke OKAMOTO, Yusuke OKAMACHI
  • Publication number: 20170211656
    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: Application
    Filed: January 23, 2015
    Publication date: July 27, 2017
    Inventors: Yuki KAWAHARA, Yusuke OKAMOTO, Yusuke OKAMACHI
  • Patent number: 9618105
    Abstract: A torque converter includes a torque converter body, a lock-up device, and a dynamic damper. The lock-up device includes an output plate coupled to a turbine. The dynamic damper is fixed to the output plate of the lock-up device, and is configured to attenuate variation in speed of rotation from the engine. The dynamic damper includes a base plate, an inertia unit, and an elastic unit. The base plate is fixed to the output plate. The inertia unit is movable relative to the base plate in a rotational direction. The elastic unit exerts nonlinear torsional characteristics, and elastically couples the base plate and the inertia unit in the rotational direction.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: April 11, 2017
    Assignee: EXEDY Corporation
    Inventors: Yuki Kawahara, Yusuke Okamoto, Yusuke Okamachi
  • Publication number: 20160258521
    Abstract: A torque converter includes a torque converter body, a lock-up device, and a dynamic damper. The lock-up device includes an output plate coupled to a turbine. The dynamic damper is fixed to the output plate of the lock-up device, and is configured to attenuate variation in speed of rotation from the engine. The dynamic damper includes a base plate, an inertia unit, and an elastic unit. The base plate is fixed to the output plate. The inertia unit is movable relative to the base plate in a rotational direction. The elastic unit exerts nonlinear torsional characteristics, and elastically couples the base plate and the inertia unit in the rotational direction.
    Type: Application
    Filed: January 23, 2015
    Publication date: September 8, 2016
    Inventors: Yuki KAWAHARA, Yusuke OKAMOTO, Yusuke OKAMACHI