Patents by Inventor Akira Takagi

Akira Takagi 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).

  • Publication number: 20230304543
    Abstract: A rotary actuator includes a housing, a motor, a speed reducer, and a rotational translation unit. The motor includes a stator that includes a coil and is fixed to the housing, and a rotor that is provided with a magnet and rotates when the coil is energized. The speed reducer decelerates and outputs a torque of the motor. The speed reducer is a planetary gear mechanism including a sun gear, multiple planetary gears, and a ring gear. At least one of projection region components, which are components constituting the speed reducer and are located in a magnet projection region obtained by projecting a magnet in an axial direction, is formed of a non-magnetic material.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Inventors: Tomonori SUZUKI, Takumi SUGIURA, Akira TAKAGI
  • Publication number: 20230272140
    Abstract: There are provided a composition for sealing a coated electric wire, containing a 2-cyanoacrylate compound, which gives a cured product not only excellent in heat resistance, moisture heat resistance, and thermal shock resistance but also excellent in flex resistance, wherein the 2-cyanoacrylate compound contains more than 50 mass % to not more than 99 mass % of a 2-cyanoacrylate having an ether bond in an ester residue, and not less than 1 mass % to less than 50 mass % of at least one alkyl 2-cyanoacrylate selected from a group consisting of isopropyl cyanoacrylate and n-butyl cyanoacrylate, relative to 100 mass % of the total of the 2-cyanoacrylate compound; and further a coated electric wire covered by the composition.
    Type: Application
    Filed: July 1, 2021
    Publication date: August 31, 2023
    Inventors: Akira TAKAGI, Tatsuya NAKAYASU, Hiroyuki TERAI
  • Patent number: 11732765
    Abstract: A prime mover includes a stator fixed to the housing and a rotor rotatable relative to the stator. The prime mover outputs torque by being supplied with electric power. A speed reducer reduces the torque of the prime mover and outputs the reduced torque. A rotational translation unit includes a rotation portion that rotates relative to the housing upon receiving the torque from the speed reducer, and a translation portion that moves relative to the housing in an axial direction. A clutch allows torque transmission in an engaged state, and interrupts the torque transmission in a disengaged state. A state changing unit changes the state of the clutch by receiving a force along the axial direction from the translation portion. Cogging torque generated between the rotor and the stator is set to such a magnitude that the rotor is stoppable at any rotation position relative to the stator.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: August 22, 2023
    Assignee: DENSO CORPORATION
    Inventors: Akikazu Uchida, Takumi Sugiura, Akira Takagi, Masayuki Echizen
  • Patent number: 11718810
    Abstract: A lubricating oil composition including: a lubricating base oil; (A) a first defoaming agent, the first defoaming agent being (A1) a first polymer, or (A2) a second polymer, or any combination thereof; and (B) a second defoaming agent, the second defoaming agent being a silicone defoaming agent, the (A1) first polymer including: a first polymer chain including a polysiloxane structure, the polysiloxane structure having a polymerization degree of 5 to 2000 and being represented by the following general formula (1); and a second polymer chain bonded with the first polymer chain, the second polymer chain including a repeating unit represented by the following general formula (2), the (A2) second polymer being a copolymer of a first monomer component and a second monomer component, the first monomer component represented by the general formula (7) or (8), the second monomer component represented by the general formula (9).
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: August 8, 2023
    Assignee: ENEOS CORPORATION
    Inventors: Akira Takagi, Go Tatsumi, Noriko Ayame
  • Publication number: 20230159848
    Abstract: A defoaming agent obtainable by a process that includes: polymerizing (A) at least one polymerizable monomer in a composition, the composition comprising (C) a solvent and (B) at least one non-polymerizable polysiloxane dissolved in the (C) solvent, wherein the component (A) optionally comprises at least one Si-atom-containing monomer in an amount of less than 10 mass % on the basis of the total mass of the component (A).
    Type: Application
    Filed: June 4, 2021
    Publication date: May 25, 2023
    Applicant: ENEOS CORPORATION
    Inventors: Akira TAKAGI, Noriko AYAME
  • Patent number: 11645299
    Abstract: A data management device is communicably connected to a first database and a second database in a different structure from the first database. The second database is converted to the structure of the first database, and is stored as a conversion table based on first data schema information defining the structure of the first database and second data schema information defining the structure of the second database. For which database a query that is received from the outside and described corresponding to the structure of the first database is a query is determined with reference to the conversion table. When the query is determined to be a query for the second database, the query is converted and is introduced into the second database, and a query result in response to the query is converted into a format corresponding to the structure of the first database and output.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: May 9, 2023
    Assignee: HITACHI, LTD.
    Inventors: Akira Takagi, Motonobu Saito
  • Patent number: 11376328
    Abstract: Provided is a pharmaceutical composition in which the solubility and/or dissolution properties of a poorly-soluble drug can be improved. The pharmaceutical composition comprises a poorly-soluble drug, and polyvinyl alcohol having a saponification degree of 63 mol % or more and 67 mol % or less.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: July 5, 2022
    Assignee: Astellas Pharma Inc.
    Inventors: Takatsune Yoshida, Hiroyuki Kojima, Yoshiaki Umemoto, Sachie Namiki, Akira Takagi, Ken Shimada
  • Publication number: 20220204884
    Abstract: A lubricating oil composition including: a lubricating base oil; (A) a first defoaming agent, the first defoaming agent being (A1) a first polymer, or (A2) a second polymer, or any combination thereof; and (B) a second defoaming agent, the second defoaming agent being a silicone defoaming agent, the (A1) first polymer including: a first polymer chain including a polysiloxane structure, the polysiloxane structure having a polymerization degree of 5 to 2000 and being represented by the following general formula (1); and a second polymer chain bonded with the first polymer chain, the second polymer chain including a repeating unit represented by the following general formula (2), the (A2) second polymer being a copolymer of a first monomer component and a second monomer component, the first monomer component represented by the general formula (7) or (8), the second monomer component represented by the general formula (9).
    Type: Application
    Filed: April 10, 2020
    Publication date: June 30, 2022
    Applicant: ENEOS CORPORATION
    Inventors: Akira TAKAGI, Go TATSUMI, Noriko AYAME
  • Publication number: 20220145939
    Abstract: A housing includes an accommodation space for a prime mover and a speed reducer. A rotational translation unit includes a rotation portion that rotates relative to the housing upon receiving torque outputted from the speed reducer, and a translation portion that moves relative to the housing in an axial direction according to rotation of the rotation portion. The accommodation space is between the rotation portion and the housing. A clutch in a clutch space allows or interrupts transmission of torque between a first transmission portion and a second transmission portion. The rotation portion is between the clutch space and the accommodation space. A sealing member has an annular shape in contact with the rotation portion, and maintains an air-tight or liquid-tight state between the accommodation space and the clutch space.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Akira TAKAGI, Ryo ISHIBASHI, Takumi SUGIURA
  • Publication number: 20220145940
    Abstract: Torque of a prime mover is input into a sun gear. A planetary gear revolves in a circumferential direction of the sun gear while rotating and meshing with the sun gear. A carrier has an annular shape, rotatably supports the planetary gear, and is rotatable relative to the sun gear. A first ring gear is fixed to a housing, and meshes with the planetary gear. A second ring gear meshes with the planetary gear, is different from the first ring gear in number of teeth of a tooth portion, and outputs torque to a rotation portion. At least a part of the sun gear in an axial direction is located radially inward of the carrier. At least a part of the first ring gear and at least a part of the second ring gear in the axial direction are located radially outward of the carrier.
    Type: Application
    Filed: January 25, 2022
    Publication date: May 12, 2022
    Inventors: Ryo ISHIBASHI, Takumi SUGIURA, Akira TAKAGI
  • Publication number: 20220145943
    Abstract: A prime mover includes a stator fixed to a housing, and a rotor rotatable relative to the stator. The prime mover outputs torque from the rotor by being supplied with electric power. A speed reducer reduces the torque of the prime mover and outputs the reduced torque. The speed reducer includes a sun gear to which the torque from the rotor is input, and a planetary gear that revolves in a circumferential direction of the sun gear while rotating in a state of meshing with the sun gear. The rotor and the sun gear are formed separately, and are disposed coaxially so as to be integrally rotatable.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Akikazu UCHIDA, Takumi SUGIURA, Akira TAKAGI
  • Publication number: 20220145942
    Abstract: A state changing unit is provided radially outward of a translation portion and movable in an axial direction relative to the translation portion. The state changing unit is in contact with or separated from the clutch. The state changing unit receives a force in the axial direction from the translation portion such that the state changing unit is pressed against the clutch. The state changing unit is capable of changing a state of the clutch to an engaged state or a disengaged state according to a position of the translation portion in the axial direction relative to the housing. A movement restriction portion is provided on the translation portion and located between the state changing unit and the clutch. The movement restriction portion contacts the state changing unit and restricts movement of the state changing unit relative to the translation portion toward the clutch.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Souichirou Hayashi, Takumi Sugiura, Akira Takagi
  • Publication number: 20220136568
    Abstract: A rotational translation unit includes a rotation portion that rotates relative to a housing upon receiving an input of torque output from a speed reducer, and a translation portion that moves relative to the housing in an axial direction according to rotation of the rotation portion relative to the housing. A clutch is provided between a first transmission portion and a second transmission portion that are rotatable relative to the housing, and the clutch allows transmission of the torque between the first transmission portion and the second transmission portion in an engaged state of the clutch, and interrupts the transmission of the torque between the first transmission portion and the second transmission portion in a disengaged state of the clutch. A return spring is capable of urging the rotational translation unit in a direction away from the clutch relative to the housing.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Souichirou HAYASHI, Takumi SUGIURA, Akira TAKAGI
  • Publication number: 20220128102
    Abstract: A prime mover includes a stator fixed to the housing and a rotor rotatable relative to the stator. The prime mover outputs torque by being supplied with electric power. A speed reducer reduces the torque of the prime mover and outputs the reduced torque. A rotational translation unit includes a rotation portion that rotates relative to the housing upon receiving the torque from the speed reducer, and a translation portion that moves relative to the housing in an axial direction. A clutch allows torque transmission in an engaged state, and interrupts the torque transmission in a disengaged state. A state changing unit changes the state of the clutch by receiving a force along the axial direction from the translation portion. Cogging torque generated between the rotor and the stator is set to such a magnitude that the rotor is stoppable at any rotation position relative to the stator.
    Type: Application
    Filed: January 7, 2022
    Publication date: April 28, 2022
    Inventors: Akikazu UCHIDA, Takumi SUGIURA, Akira TAKAGI, Masayuki ECHIZEN
  • Patent number: 11242898
    Abstract: In a drive cam groove, a groove bottom is sloped such that a depth of the groove bottom continuously decreases from one end to the other end of the drive cam groove. The drive cam groove has: a first drive cam groove that is formed such that a distance between a center of a drive cam and the groove bottom at the first drive cam groove continuously changes from the one end toward the other end of the drive cam groove; and a second drive cam groove that is formed such that a distance between the center of the drive cam and the groove bottom at the second drive cam groove is constant from the first drive cam groove to the other end of the drive cam groove.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: February 8, 2022
    Assignee: DENSO CORPORATION
    Inventors: Takumi Sugiura, Akira Takagi
  • Publication number: 20220019597
    Abstract: A data management device is communicably connected to a first database and a second database in a different structure from the first database. The second database is converted to the structure of the first database, and is stored as a conversion table based on first data schema information defining the structure of the first database and second data schema information defining the structure of the second database. For which database a query that is received from the outside and described corresponding to the structure of the first database is a query is determined with reference to the conversion table. When the query is determined to be a query for the second database, the query is converted and is introduced into the second database, and a query result in response to the query is converted into a format corresponding to the structure of the first database and output.
    Type: Application
    Filed: July 9, 2021
    Publication date: January 20, 2022
    Applicant: HITACHI, LTD.
    Inventors: Akira TAKAGI, Motonobu SAITO
  • Patent number: 11046907
    Abstract: A defoaming agent including a polymer, the polymer including: at least one first polymer chain including a polysiloxane structure represented by the following general formula (1); and at least one second polymer chain including a repeating unit represented by the following general formula (2) and bonded to the first polymer chain: wherein in the formula (1), repeating units may be in any order; each of R1 and R2 is independently a C1-18 organic group comprising no fluorine atom; at least one of R3 and R4 is the organic group comprising no less than 3 fluorine atoms; m is an integer of no less than 1; and n+m is 5 to 2000, wherein in the formula (2), X1 is a repeating unit obtainable by polymerization of an ethylenic unsaturated group; Y1 is a substituted or unsubstituted C1-40 hydrocarbyl group; and Z1 is a linking group linking X1 and Y1.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: June 29, 2021
    Assignee: ENEOS CORPORATION
    Inventors: Go Tatsumi, Akira Takagi
  • Publication number: 20210115981
    Abstract: A speed reducer is configured to reduce a rotational speed of rotation generated by torque received from a drive device and output the torque of the rotation of the reduced rotational speed. A drive cam has a plurality of drive cam grooves formed at one end surface of the drive cam and is rotated by the torque outputted from the speed reducer. A driven cam has a plurality of driven cam grooves formed at one end surface of the driven cam while each of the plurality of rolling elements is clamped between a corresponding one of the plurality of drive cam grooves and a corresponding one of the plurality of driven cam grooves. At least a part of each of the plurality of drive cam grooves overlaps with the speed reducer in the axial direction.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Inventors: Ryo ISHIBASHI, Akira TAKAGI, Takumi SUGIURA
  • Publication number: 20210115979
    Abstract: A normal-time drive cam groove extends from a drive cam specific point, which is defined as a specific point of the drive cam, toward one side in a circumferential direction of the drive cam. A groove bottom at the normal-time drive cam groove is sloped relative to one end surface of the drive cam such that a depth of the groove bottom continuously decreases from the drive cam specific point toward the one side in the circumferential direction of the drive cam. An emergency-time drive cam groove extends from the drive cam specific point toward another side in the circumferential direction of the drive cam.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Inventors: Akira TAKAGI, Ryo ISHIBASHI, Takumi SUGIURA
  • Publication number: 20210115980
    Abstract: At a drive cam slope groove, a groove bottom is sloped relative to one end surface of a drive cam such that a depth of the groove bottom continuously decreases from one side toward other side in a circumferential direction. At a drive cam planar groove, the groove bottom is parallel to the one end surface of the drive cam. A drive cam connection groove has: one end connected to an end of the drive cam slope groove located on the other side in the circumferential direction of the drive cam; and the other end connected to an end of the drive cam planar groove located on the one side in the circumferential direction. A slope angle of the groove bottom relative to the one end surface of the drive cam continuously changes from the one end to the other end of the drive cam connection groove.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Inventors: Takumi SUGIURA, Akira TAKAGI, Ryo ISHIBASHI