Patents by Inventor Tadahiro KURAMOTO

Tadahiro KURAMOTO 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: 20220250713
    Abstract: A drive device includes a motor having a motor shaft, an output part outputting a rotational force to the outside, a gear part transmitting the rotational force of the motor shaft to the output part, and a housing having an internal space in which the motor, a portion of the output part, and the gear part are accommodated. The housing includes a support member of which at least a portion is disposed in the internal space. The gear part includes at least one gear shaft rotatably supported by the housing via two bearing parts disposed away from each other in an axial direction. The at least one gear shaft is rotatably supported by the support member via the bearing part on one side in the axial direction.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 11, 2022
    Applicant: NIDEC CORPORATION
    Inventors: Tadahiro KURAMOTO, Toshiyuki SASAKI, Takeshi OHIRO
  • Publication number: 20220250714
    Abstract: A drive device includes a motor, an output part outputting torque to the outside, a gear part transmitting torque of the motor to the output part, and a housing having an internal space. The gear part includes at least one gear shaft extending in an axial direction, to which at least one gear is fixed, and a gear case accommodating the gear. The gear case includes a wall part facing an outer circumferential surface of the accommodated gear in a radial direction and extending in a circumferential direction and an opening adjacent to the wall part in the circumferential direction and penetrating in the radial direction. The opening faces the housing in the radial direction, and in a rotation direction of the gear, the wall part includes a front end disposed on a front side of the opening and adjacent to the opening. The front end contacts the housing.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 11, 2022
    Applicant: NIDEC CORPORATION
    Inventors: Tadahiro KURAMOTO, Toshiyuki SASAKI, Takeshi OHIRO
  • Patent number: 10910018
    Abstract: A base unit includes a support to support a motor, a bottom plate, and a wall. The bottom plate extends radially outward from the support. The wall extends upward from an outer periphery of the bottom plate, and includes a rectangular opening in planar view. Surfaces of the bottom plate and the wall include a cover surface covered with an electrodeposition coating film and an exposed surface in which a material of the base unit is exposed from the electrodeposition coating film. At least an upper end surface of the wall and a partial region of an inside wall surface of the wall continuous with the upper end surface are each the exposed surface.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: February 2, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Tomonori Terasaki, Tomohiro Yoneda, Junzo Fujinawa, Hirokazu Watanabe, Tadahiro Kuramoto
  • Patent number: 10460767
    Abstract: A base member is structured to define a portion of a casing in which a gas with a density lower than that of air is to be sealed and to support a motor to be housed in the casing. The base member includes a base body made of a cast material, an information mark, and an insulating coating layer. The information mark includes casting information and is located on a portion of a surface of the base body. The insulating coating layer is defined on the surface of the base body and covers the information mark.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: October 29, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Tomohiro Yoneda, Takaharu Funatsu, Akitsugu Miwa, Masakazu Matsuyama, Junzo Fujinawa, Tadahiro Kuramoto
  • Publication number: 20190287573
    Abstract: A base unit includes a support to support a motor, a bottom plate, and a wall. The bottom plate extends radially outward from the support. The wall extends upward from an outer periphery of the bottom plate, and includes a rectangular opening in planar view. Surfaces of the bottom plate and the wall include a cover surface covered with an electrodeposition coating film and an exposed surface in which a material of the base unit is exposed from the electrodeposition coating film. At least an upper end surface of the wall and a partial region of an inside wall surface of the wall continuous with the upper end surface are each the exposed surface.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 19, 2019
    Inventors: Tomonori TERASAKI, Tomohiro YONEDA, Junzo FUJINAWA, Hirokazu WATANABE, Tadahiro KURAMOTO
  • Publication number: 20190139579
    Abstract: A base member is structured to define a portion of a casing in which a gas with a density lower than that of air is to be sealed and to support a motor to be housed in the casing. The base member includes a base body made of a cast material, an information mark, and an insulating coating layer. The information mark includes casting information and is located on a portion of a surface of the base body. The insulating coating layer is defined on the surface of the base body and covers the information mark.
    Type: Application
    Filed: October 1, 2018
    Publication date: May 9, 2019
    Inventors: Tomohiro YONEDA, Takaharu FUNATSU, Akitsugu MIWA, Masakazu MATSUYAMA, Junzo FUJINAWA, Tadahiro KURAMOTO
  • Patent number: 10068607
    Abstract: A base portion of a motor includes an inner bottom plate portion, a recessed portion and groove portions recessed upward from a lower surface of the inner bottom plate portion, and at least one through hole passing through the inner bottom plate portion in an axial direction. The groove portions extend from the recessed portion toward land portions of a circuit board on a lower surface of the base portion. Conducting wires are drawn out from coils above the base portion to a draw-out surface through the at least one through hole, and are passed through communicating openings and the groove portions to be soldered to the land portions. Each of the at least one through hole is covered with the sealant. Drawing the conducting wires out of the recessed portion through the groove portions prevents the sealant in the recessed portion from overflowing toward the land portions.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: September 4, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Masahiro Akagi, Tomohiro Yoneda, Tadahiro Kuramoto, Hiroshi Kobayashi, Masayuki Maeda, Daisuke Moro
  • Publication number: 20160254022
    Abstract: A base portion of a motor includes an annular inner bottom plate portion, a recessed portion and groove portions recessed upward from a lower surface of the inner bottom plate portion, and at least one through hole passing through the inner bottom plate portion in an axial direction. The groove portions are arranged to extend from the recessed portion toward land portions of a circuit board arranged on a lower surface of the base portion. A draw-out surface of the recessed portion has a lower opening of each of the at least one through hole defined therein. A wall surface of the recessed portion includes communicating openings each of which is in communication with one end of a separate one of the groove portions. Conducting wires are drawn out from coils arranged above the base portion to the draw-out surface through the at least one through hole, and are passed through the communicating openings and the groove portions to be soldered to the land portions. The recessed portion has a sealant arranged therein.
    Type: Application
    Filed: November 6, 2015
    Publication date: September 1, 2016
    Inventors: Masahiro AKAGI, Tomohiro YONEDA, Tadahiro KURAMOTO, Hiroshi KOBAYASHI, Masayuki MAEDA, Daisuke MORO
  • Patent number: D1003770
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: November 7, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Tadahiro Kuramoto, Toshiyuki Sasaki, Takeshi Ohiro, Yoshiya Watanabe