Patents by Inventor Yusaku Seki

Yusaku Seki 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: 12092359
    Abstract: An indoor unit for an air-conditioning apparatus includes an insulation box that has a space that receives a heat exchanger, an insulation panel that is disposed between the insulation box and an outer panel and that has an air inlet passage and an air outlet passage, and a casing to which the outer panel is attached. The casing contains the insulation box and the insulation panel. The insulation box has a first outside-air introduction passage that is located apart from the space and that is communicable with an outside of the casing. The insulation panel has a second outside-air introduction passage that is located apart from the air outlet passage and that is communicable between the first outside-air introduction passage and the air inlet passage.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 17, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenta Hayashi, Yusaku Seki
  • Publication number: 20240077228
    Abstract: An indoor unit of an air conditioner includes a covering member that is movable between a covering position where the covering member covers at least a portion of the wire passing portion and an opening position where the wire passing portion is opened, a sliding member that is movable along a sliding direction between a restricting position and a releasing position, and a first support member that has a head that supports the sliding member in the restricting position from a bottom side and a shoulder portion with a diameter that is smaller than the head, wherein the covering member has a first locking portion in which a first insertion hole that passes the shoulder portion through is formed, the first locking portion is positioned in a top side more than the sliding member, and La1>Ta1+Tb1 is satisfied.
    Type: Application
    Filed: May 19, 2021
    Publication date: March 7, 2024
    Inventors: Yosuke TAKANO, Naoya MATSUNAGA, Takahiro KOMATSU, Yusaku SEKI
  • Patent number: 11894790
    Abstract: A control substrate capable of effectively reducing noise input to a plurality of MOSFETs is provided. The control substrate includes at least three parallel snubber circuits (132, 134, and 135). Each of the parallel snubber circuits (132, 133, and 134) is connected in parallel with each of U-phase MOSFETs (126a and 126b), V-phase MOSFETs (127a and 127b), and W-phase MOSFETs (128a and 128b).
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: February 6, 2024
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Yusaku Seki
  • Patent number: 11698069
    Abstract: An electronic board includes a board, and includes on the board: a power input part inputting power output from an in-vehicle power supply; a drive circuit driving a drive source; a controller controlling driving of the drive source performed by the drive circuit; and a drive command signal input part inputting a drive command signal transmitted from outside. The electronic board further includes on the board: a drive command signal detection circuit capable of detecting the drive command signal, and controlling whether to supply the power input to the power input part to the controller based on whether the drive command signal is detected.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: July 11, 2023
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Yusaku Seki
  • Publication number: 20230010667
    Abstract: An indoor unit for an air-conditioning apparatus includes an insulation box that has a space that receives a heat exchanger, an insulation panel that is disposed between the insulation box and an outer panel and that has an air inlet passage and an air outlet passage, and a casing to which the outer panel is attached. The casing contains the insulation box and the insulation panel. The insulation box has a first outside-air introduction passage that is located apart from the space and that is communicable with an outside of the casing. The insulation panel has a second outside-air introduction passage that is located apart from the air outlet passage and that is communicable between the first outside-air introduction passage and the air inlet passage.
    Type: Application
    Filed: February 19, 2020
    Publication date: January 12, 2023
    Inventors: Kenta HAYASHI, Yusaku SEKI
  • Patent number: 11362572
    Abstract: An electronic board includes a board, and includes on the board: a power input part inputting power output from an in-vehicle power supply; a drive circuit driving a drive source; a controller controlling driving of the drive source performed by the drive circuit; and a drive command signal input part inputting a drive command signal transmitted from outside. The electronic board further includes on the board: a drive command signal detection circuit capable of detecting the drive command signal, and controlling whether to supply the power input to the power input part to the controller based on whether the drive command signal is detected; and a voltage varying part varying a voltage from the power input part and outputting a varied voltage to the drive command signal detection circuit.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: June 14, 2022
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Yusaku Seki
  • Patent number: 11313583
    Abstract: A fall prevention structure of an electric component cover in a refrigeration cycle apparatus includes an electric component box housing an electric component of a refrigeration cycle apparatus. The electric component box includes a casing, a side of which is open, and an electric component cover configured to cover, in an upright position, an opening of the casing and to be screwed to the casing. The electric component cover includes a catch including a backward-extending portion and an upward-extending portion. The backward-extending portion extends backward from an upper end portion of the electric component cover. The upward-extending portion extends upward from an end portion of the backward-extending portion. In a state in which the electric component cover is screwed to the casing, the catch is inserted into an insertion slot disposed in a portion extending in an up-down direction of the casing.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 26, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusaku Seki, Tatsuo Furuta, Naoya Matsunaga
  • Patent number: 11143419
    Abstract: An air-conditioning apparatus includes a body, a decorative panel attached to a lower surface of the body defining a lower surface of the air-conditioning apparatus, an air-inlet grille that can rotate to open and close and is attached to an air inlet of the decorative panel, and a shaft disposed on the decorative panel. The shaft is movable along an axis of rotation of the air-inlet grille. The shaft includes a shaft body, a pivot protruding from one end face of the shaft body in a moving direction of the shaft, and a rib extending parallel to the pivot. The air-inlet grille has a mating portion into which the pivot is inserted to support rotation of the air-inlet grille. The pivot engages the air-inlet grille at a first limit of a movable range of the shaft. The rib engages the decorative panel while the pivot is fitted in the mating portion.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: October 12, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusaku Seki, Tetsuya Tazawa, Keisuke Tomomura
  • Publication number: 20210203265
    Abstract: A control substrate capable of effectively reducing noise input to a plurality of MOSFETs is provided. The control substrate includes at least three parallel snubber circuits (132, 134, and 135). Each of the parallel snubber circuits (132, 133, and 134) is connected in parallel with each of U-phase MOSFETs (126a and 126b), V-phase MOSFETs (127a and 127b), and W-phase MOSFETs (128a and 128b).
    Type: Application
    Filed: December 14, 2020
    Publication date: July 1, 2021
    Applicant: NIDEC TOSOK CORPORATION
    Inventor: Yusaku SEKI
  • Publication number: 20210091642
    Abstract: A control substrate includes: a reverse connection protection circuit; a first substrate wiring connected with a source terminal of a MOSFET of the reverse connection protection circuit; a second substrate wiring connected with a GND terminal; a bypass circuit, allowing, in a case where an output voltage of a vehicle-mounted battery is equal to or greater than a predetermined value, a current to flow from the first substrate wiring to the second substrate wiring; and a clamp circuit, connected with a positive electrode terminal and a GND terminal on an upstream side with respect to the MOSFET and clamps a positive voltage to a second predetermined value. The first predetermined value is a value smaller than a withstand voltage between a gate and a source of the MOSFET.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 25, 2021
    Applicant: NIDEC TOSOK CORPORATION
    Inventor: Yusaku SEKI
  • Publication number: 20210067011
    Abstract: An electronic board includes a board, and includes on the board: a power input part inputting power output from an in-vehicle power supply; a drive circuit driving a drive source; a controller controlling driving of the drive source performed by the drive circuit; and a drive command signal input part inputting a drive command signal transmitted from outside. The electronic board further includes on the board: a drive command signal detection circuit capable of detecting the drive command signal, and controlling whether to supply the power input to the power input part to the controller based on whether the drive command signal is detected; and a voltage varying part varying a voltage from the power input part and outputting a varied voltage to the drive command signal detection circuit.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 4, 2021
    Applicant: NIDEC TOSOK CORPORATION
    Inventor: Yusaku SEKI
  • Publication number: 20210062802
    Abstract: An electronic board includes a board, and includes on the board: a power input part inputting power output from an in-vehicle power supply; a drive circuit driving a drive source; a controller controlling driving of the drive source performed by the drive circuit; and a drive command signal input part inputting a drive command signal transmitted from outside. The electronic board further includes on the board: a drive command signal detection circuit capable of detecting the drive command signal, and controlling whether to supply the power input to the power input part to the controller based on whether the drive command signal is detected.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 4, 2021
    Applicant: NIDEC TOSOK CORPORATION
    Inventor: Yusaku SEKI
  • Publication number: 20210003315
    Abstract: A fall prevention structure of an electric component cover in a refrigeration cycle apparatus includes an electric component box housing an electric component of a refrigeration cycle apparatus. The electric component box includes a casing, a side of which is open, and an electric component cover configured to cover, in an upright position, an opening of the casing and to be screwed to the casing. The electric component cover includes a catch including a backward-extending portion and an upward-extending portion. The backward-extending portion extends backward from an upper end portion of the electric component cover. The upward-extending portion extends upward from an end portion of the backward-extending portion. In a state in which the electric component cover is screwed to the casing, the catch is inserted into an insertion slot disposed in a portion extending in an up-down direction of the casing.
    Type: Application
    Filed: September 7, 2017
    Publication date: January 7, 2021
    Inventors: Yusaku SEKI, Tatsuo FURUTA, Naoya MATSUNAGA
  • Publication number: 20200313517
    Abstract: An electric oil pump includes a control substrate including a reverse connection protection circuit to protect a circuit in the substrate, a first substrate wiring connected to a source terminal of a MOSFET in the reverse connection protection circuit, a second substrate wiring connected to a GND terminal, and a bypass circuit that causes a current to flow from the first substrate wiring to the second substrate wiring in a case in which an output voltage of the external power supply is equal to or greater than a predetermined value that is greater than a rated voltage, in which the predetermined value is a value that is smaller than a withstanding voltage between a gate and the source of the MOSFET.
    Type: Application
    Filed: February 21, 2020
    Publication date: October 1, 2020
    Inventors: Yusaku SEKI, Chisato SEKIGUCHI, Junichi TAKAO, Yasuaki KONAGAYA
  • Publication number: 20190368751
    Abstract: An air-conditioning apparatus includes a body, a decorative panel defining a lower surface of the body, an air-inlet grille that can rotate to open and close and is attached to an air inlet of the decorative panel, and a shaft disposed on the decorative panel. The shaft is movable along an axis of rotation of the air-inlet grille. The shaft includes a shaft body, a pivot protruding from one end face of the shaft body in a moving direction of the shaft, and a rib extending parallel to the pivot. The air-inlet grille has a mating portion into which the pivot is inserted to support rotation of the air-inlet grille. The pivot engages the air-inlet grille at a first limit of a movable range of the shaft. The rib engages the decorative panel while the pivot is fitted in the mating portion.
    Type: Application
    Filed: February 23, 2017
    Publication date: December 5, 2019
    Inventors: Yusaku SEKI, Tetsuya TAZAWA, Keisuke TOMOMURA
  • Publication number: 20180254685
    Abstract: A motor includes a shaft. The motor includes a motor section and a motor-driving section that is positioned on one side of the motor section in the axial direction and that drives the motor section. The motor section includes a rotor that is rotatable around the shaft, a stator that is disposed outside of the rotor in a radial direction, and a housing that contains the rotor and the stator. The motor-driving section includes a circuit board and a plurality of heat-generating elements mounted on the circuit board. The motor includes an inverter circuit that controls driving of the motor section and an inverter case that contains the inverter circuit. The inverter circuit includes a plurality of blocks including a power source block, a drive block, and a control block, and at least one of the plurality of blocks is separated from the other blocks.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 6, 2018
    Inventor: Yusaku SEKI
  • Patent number: D804475
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: December 5, 2017
    Assignee: BROTHER INDUSTRIES, LTD.
    Inventor: Yusaku Seki
  • Patent number: D805072
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: December 12, 2017
    Assignee: BROTHER INDUSTRIES, LTD.
    Inventor: Yusaku Seki
  • Patent number: D818532
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: May 22, 2018
    Assignee: BROTHER INDUSTRIES, LTD.
    Inventors: Yukihiko Sato, Yusaku Seki, Hiromitsu Tanaka
  • Patent number: D829277
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: September 25, 2018
    Assignee: BROTHER INDUSTRIES, LTD.
    Inventor: Yusaku Seki