Patents Assigned to JATCO Ltd
  • Patent number: 12710092
    Abstract: A device includes: a first planetary gear mechanism including a first sun gear connected to an input shaft, a first carrier connected to an output shaft, and a first ring gear; and a second planetary gear mechanism including a second sun gear connected to the input shaft, a second carrier connected to a first fixed element via a first engagement element, and a second ring gear connected to a second fixed element via a second engagement element, the first planetary gear mechanism and the second planetary gear mechanism are connected by the first ring gear and the second carrier, and the first sun gear and the first ring gear are connected by a third engagement element.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: August 18, 2026
    Assignee: JATCO Ltd
    Inventors: Kazutoshi Shimozono, Minoru Shoichi
  • Patent number: 12704171
    Abstract: Provided is a unit including: a gear device including a first planetary gear mechanism including a first sun gear, a first carrier, and a first ring gear, and a second planetary gear mechanism including a second sun gear, a second carrier, and a second ring gear; an input element; an output element; a first engagement element; a second engagement element; and a third engagement element. Coupled to each other are the first sun gear with the second carrier and the second sun gear with the first carrier. The first engagement element is connected to the input element, the first sun gear, and the second carrier. The second engagement element is connected to the input element and the second ring gear. The third engagement element is connected to the second sun gear, the first carrier, and is fixed. The output element is connected to the first ring gear.
    Type: Grant
    Filed: July 5, 2023
    Date of Patent: August 11, 2026
    Assignee: JATCO Ltd
    Inventors: Akira Kamiyama, Kenichi Watanabe, Ikuo Hirose
  • Publication number: 20260225435
    Abstract: A unit includes a housing configured to accommodate an inverter, a rotating electrical machine, a shaft connected downstream of the rotating electrical machine, and a grounding body in contact with the shaft. The housing has a peripheral wall surrounding the inverter, and the grounding body is located at an inner side of the peripheral wall.
    Type: Application
    Filed: October 20, 2023
    Publication date: August 6, 2026
    Applicant: JATCO Ltd
    Inventors: Akira KAMIYAMA, Hiroki UEHARA, Minoru SHOICHI
  • Publication number: 20260225550
    Abstract: A unit includes a rotating electrical machine, a shaft configured to rotate integrally with the rotating electrical machine, a differential gear connected downstream of the shaft, a differential case configured to accommodate the differential gear, and a grounding body in contact with the shaft. The grounding body has a portion that overlaps the differential case when viewed in a radial direction.
    Type: Application
    Filed: October 20, 2023
    Publication date: August 6, 2026
    Applicant: JATCO Ltd
    Inventors: Akira KAMIYAMA, Hiroki UEHARA, Minoru SHOICHI
  • Patent number: 12697984
    Abstract: Provided is a vehicle control device that controls a vehicle including an automatic transmission, the automatic transmission including a first oil pump driven by a first drive source that drives a drive wheel and a second oil pump driven by a second drive source, wherein the vehicle control device drives the second oil pump when the first drive source is started, and drives the second oil pump when a time during which the second oil pump is not driven after the first drive source is started continues for a predetermined time or longer, and a drive time for the second oil pump when the first drive source is started is longer than a drive time when the time during which the second oil pump is not driven continues for the predetermined time or longer.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: August 4, 2026
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Tarou Murazumi, Hajime Tasaka, Keisuke Iwado, Hiroyuki Tokoi, Yuji Oishi
  • Patent number: 12680605
    Abstract: The unit includes a housing configured to house oil, a rotating electric machine, a first gear connected downstream of the rotating electric machine, a second gear meshing with the first gear, a third gear connected downstream of the second gear, a fourth gear meshing with the third gear, a fifth gear connected downstream of the fourth gear, and a sixth gear meshing with the fifth gear. The rotating electric machine and the first gear are disposed on a first axis. The second gear and the third gear are disposed on a second axis. The fourth gear and the fifth gear are disposed on a third axis. The sixth gear is disposed on a fourth axis. When viewed in an axial direction, the first axis and the fourth axis are disposed in a lower side of the second axis and the third axis.
    Type: Grant
    Filed: May 12, 2023
    Date of Patent: July 14, 2026
    Assignee: JATCO Ltd
    Inventors: Atsushi Maeda, Akira Suwabayashi, Minoru Shoichi, Hiroki Uehara, Akira Kamiyama
  • Patent number: 12671300
    Abstract: A component comprising: a first case portion having a tunnel portion having an opening end opening toward an axial direction; and a second case portion having a catch tank portion opening upward, wherein the first case portion and the second case portion face each other such that a bottom portion of the tunnel portion and a bottom portion of the catch tank portion are coupled to each other, an opening area of the opening end of the tunnel portion on the second case portion side is larger than an opening area of the opening end of the tunnel portion on a side opposite to the second case portion side, the tunnel portion as a whole is inclined downward from the second case portion side of the tunnel portion to the side opposite to the second case portion side of the tunnel portion, and the second case portion side of the tunnel portion is inclined downward toward the catch tank portion.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: June 30, 2026
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Yuuki Tanaka, Yutaka Okumura, Yusuke Suzuki, Yojiro Mochizuki
  • Patent number: 12663059
    Abstract: Provided is a unit including: an input element; an output element; first to third engagement elements; a first planetary gear mechanism in which the first to third rotational elements are arranged in this order on an alignment chart; and a second planetary gear mechanism in which fourth to sixth rotational elements are arranged in this order on the alignment chart. The input element is connected to the first rotational element, the output element is connected to the second rotational element and the sixth rotational element, one side of the first engagement element is connected to the fifth rotational element, the other side of the first engagement element is fixed, one side of the second engagement element is connected to the third rotational element and the fourth rotational element, the other side of the second engagement element is fixed, and the third engagement element connects two rotational elements that are selected from the first to sixth rotational elements and are not connected to each other.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: June 23, 2026
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Kazunori Kawashima, Michinori Matsuo, Toshikazu Oshidari
  • Patent number: 12663070
    Abstract: A power transmission device for a vehicle includes a housing that accommodates a power transmission mechanism, a control valve configured to control an oil pressure supplied to the power transmission mechanism, an oil pump configured to supply oil to the control valve, a partition section that divides an interior of the housing into a first chamber that accommodates the power transmission mechanism and a second chamber in which the control valve is arranged upright, and a communication path communicating between the first chamber and the second chamber. An opening area of the communication path is set so that an amount of the oil flowing from the second chamber into the first chamber through the communication path is less than an amount of the oil drained into the second chamber from the control valve while the vehicle is in motion.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: June 23, 2026
    Assignees: JATCO LTD, Nissan Motor Co., Ltd.
    Inventor: Akira Tsuchida
  • Patent number: 12663072
    Abstract: A power transmission device includes a case including an oil reservoir at a lower portion thereof, and a first shaft, a second shaft, and a third shaft which are shaft-supported by the case. The case includes an air breather chamber that separates air and an oil in the case and communicates with the atmosphere, an oil catch tank that reserves an oil raked up by a third gear portion of the third shaft, and an oil guide that introduces the oil raked up by the third gear portion into the oil catch tank. The air breather chamber is provided above and near the third shaft. The oil catch tank is provided above and near the first shaft. The oil guide is provided above the second shaft. The second shaft is disposed outside the oil reservoir in the case.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: June 23, 2026
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventor: Akira Tsuchida
  • Publication number: 20260168561
    Abstract: Provided is a unit including: an input element; an output element; first to third engagement elements; a first planetary gear mechanism in which the first to third rotational elements are arranged in this order on an alignment chart; and a second planetary gear mechanism in which fourth to sixth rotational elements are arranged in this order on the alignment chart. The input element is connected to the sixth rotational element, the output element is connected to the third rotational element and the fifth rotational element, one side of the first engagement element is connected to the second rotational element, the other side of the first engagement element is fixed, one side of the second engagement element is connected to the first rotational element and the fourth rotational element, the other side of the second engagement element is fixed, and the third engagement element connects two rotational elements that are selected from the first to sixth rotational elements and are not connected to each other.
    Type: Application
    Filed: May 19, 2023
    Publication date: June 18, 2026
    Applicant: JATCO Ltd
    Inventors: Kazutoshi SHIMOZONO, Hidekazu YAGI
  • Patent number: 12638066
    Abstract: Provided is a unit including: an input element; an output element; first to third engagement elements; a first planetary gear mechanism in which the first to third rotational elements are arranged in this order on an alignment chart; and a second planetary gear mechanism in which fourth to sixth rotational elements are arranged in this order on the alignment chart. The input element is connected to the first rotational element and the sixth rotational element, the output element is connected to the second rotational element, one side of the first engagement element is connected to the third rotational element and the fifth rotational element, the other side of the first engagement element is fixed, one side of the second engagement element is connected to the fourth rotational element, the other side of the second engagement element is fixed, and the third engagement element connects two rotational elements that are selected from the first to sixth rotational elements and are not connected to each other.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: May 26, 2026
    Assignee: JATCO Ltd
    Inventors: Hidekazu Yagi, Kazutoshi Shimozono
  • Patent number: 12640613
    Abstract: A rotating electric machine includes an inner housing and an outer housing. An inner circumferential surface of the outer housing includes a first cylindrical surface contacting first sealing member, a second cylindrical surface contacting a second sealing member, and a third cylindrical surface in which an end part of the inner housing is press-fitted into. The second cylindrical surface has a smaller diameter than the first cylindrical surface and the third cylindrical surface has a smaller diameter than the second cylindrical surface and is provided closer to the bottom than the second cylindrical surface. The first sealing member contacts the first cylindrical surface and the second sealing member contacts the second cylindrical surface to form a gap in an axial direction between the end part of the inner housing and the third cylindrical surface where the inner housing has been inserted into the outer housing.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: May 26, 2026
    Assignees: Nissan Motor Co., Ltd., JATCO LTD
    Inventors: Kazuki Eguchi, Tatsuya Uchida, Yiwei Zhao, Fumio Honda, Yusuke Suzuki, Yojiro Mochizuki
  • Patent number: 12631247
    Abstract: A power transmission device includes: a case that accommodates a power transmission mechanism; a strainer disposed to face a bottom wall portion in the case; a suction port for oil provided in a portion of the strainer facing the bottom wall portion; and a magnet disposed between the bottom wall portion and the strainer in the case. The magnet and the suction port are provided to be displaced from each other when viewed from a facing direction in which the strainer and the bottom wall portion face each other, and the suction port is provided with an opening facing a magnet side.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: May 19, 2026
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Akira Tsuchida, Katsunori Yamashita, Tomoya Otaki, Tsutomu Itou
  • Patent number: 12630010
    Abstract: Provided is a unit including: a heat exchanger; and a housing configured to accommodate a differential gear mechanism, in which the housing has a portion having an inclined surface surrounding the differential gear mechanism in a radial direction, and the heat exchanger has a portion that overlaps the inclined surface when viewed in an axial direction.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: May 19, 2026
    Assignee: JATCO Ltd
    Inventor: Yusuke Oota
  • Patent number: 12623525
    Abstract: A unit includes: a rotating electrical machine; an inverter located in an outer periphery of the rotating electrical machine; a first gear connected downstream of the rotating electrical machine; a second gear to mesh with the first gear; a third gear connected downstream of the second gear via a shaft; and a fourth gear to mesh with the third gear. The shaft has a portion that overlaps a stator of the rotating electrical machine when viewed in a radial direction, and the inverter has a portion that overlaps the second gear when viewed in an axial direction.
    Type: Grant
    Filed: May 12, 2023
    Date of Patent: May 12, 2026
    Assignee: JATCO Ltd
    Inventors: Atsushi Maeda, Minoru Shoichi, Hiroki Uehara, Akira Suwabayashi
  • Patent number: 12601401
    Abstract: Provided is a unit including: an input element; an output element; first to third engagement elements; a first planetary gear mechanism in which the first to third rotational elements are arranged in this order on an alignment chart; and a second planetary gear mechanism in which fourth to sixth rotational elements are arranged in this order on the alignment chart. The input element is connected to the third rotational element, the output element is connected to the second rotational element and the sixth rotational element, one side of the first engagement element is connected to the fifth rotational element, the other side of the first engagement element is fixed, one side of the second engagement element is connected to the first rotational element and the fourth rotational element, the other side of the second engagement element is fixed, and the third engagement element connects two rotational elements that are selected from the first to sixth rotational elements and are not connected to each other.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: April 14, 2026
    Assignee: JATCO Ltd
    Inventors: Hidekazu Yagi, Kazutoshi Shimozono
  • Patent number: 12595842
    Abstract: A power transmission device for a vehicle includes a housing that accommodates a power transmission mechanism, a partition section that supports the power transmission mechanism and divides an interior of the housing, a strainer arranged at a bottom of the housing, and a pump supported by the partition section. The housing defines a first chamber located on one side of the partition section in a direction of an axis of rotation of the power transmission device, and a second chamber located on the other side of the partition section. The strainer has a first connection port that connects to the pump, and a second connection port that connects to a second oil path inside the partition section, the second connection port connecting to the second oil path from a direction of assembly of the pump onto the partition section.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: April 7, 2026
    Assignees: JATCO LTD, Nissan Motor Co., Ltd.
    Inventors: Katsunori Yamashita, Hirohisa Yukawa, Masahiro Kouya, Tomoya Otaki, Tahei Toyoshima
  • Patent number: 12584475
    Abstract: An oil pressure supply device supplies, to an oil chamber, an oil pressure generated by suctioning oil from an oil source with an oil pump. The oil pressure supply device includes a first oil passage connected to a suction side of the oil pump; a first check valve provided in the first oil passage and configured to close the first oil passage and prevent oil from moving to the oil source side when the oil pump is stopped; a second oil passage connected to a discharge side of the oil pump; and a second check valve provided in the second oil passage and configured to close the second oil passage and prevent oil from moving to the oil pump side when the oil pump is stopped. When the oil pump is stopped, the second check valve closes the second oil passage earlier than the first check valve closes the first oil passage.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: March 24, 2026
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Tomoko Sugano, Takurou Kawasumi
  • Patent number: 12577976
    Abstract: A device includes: a motor, an inverter configured to drive the motor, a gear device connected downstream of the motor, and a drive shaft configured to transmit, to a drive wheel, power of the motor transmitted from the gear device, and the drive shaft includes a portion covered with a noise reducing material.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: March 17, 2026
    Assignee: JATCO Ltd
    Inventor: Shota Oikawa