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).
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Patent number: 12092359Abstract: 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: GrantFiled: February 19, 2020Date of Patent: September 17, 2024Assignee: Mitsubishi Electric CorporationInventors: Kenta Hayashi, Yusaku Seki
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Publication number: 20240077228Abstract: 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: ApplicationFiled: May 19, 2021Publication date: March 7, 2024Inventors: Yosuke TAKANO, Naoya MATSUNAGA, Takahiro KOMATSU, Yusaku SEKI
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Patent number: 11894790Abstract: 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: GrantFiled: December 14, 2020Date of Patent: February 6, 2024Assignee: NIDEC TOSOK CORPORATIONInventor: Yusaku Seki
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Patent number: 11698069Abstract: 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: GrantFiled: August 19, 2020Date of Patent: July 11, 2023Assignee: NIDEC TOSOK CORPORATIONInventor: Yusaku Seki
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Publication number: 20230010667Abstract: 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: ApplicationFiled: February 19, 2020Publication date: January 12, 2023Inventors: Kenta HAYASHI, Yusaku SEKI
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Patent number: 11362572Abstract: 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: GrantFiled: August 19, 2020Date of Patent: June 14, 2022Assignee: NIDEC TOSOK CORPORATIONInventor: Yusaku Seki
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Patent number: 11313583Abstract: 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: GrantFiled: September 7, 2017Date of Patent: April 26, 2022Assignee: Mitsubishi Electric CorporationInventors: Yusaku Seki, Tatsuo Furuta, Naoya Matsunaga
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Patent number: 11143419Abstract: 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: GrantFiled: February 23, 2017Date of Patent: October 12, 2021Assignee: Mitsubishi Electric CorporationInventors: Yusaku Seki, Tetsuya Tazawa, Keisuke Tomomura
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Publication number: 20210203265Abstract: 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: ApplicationFiled: December 14, 2020Publication date: July 1, 2021Applicant: NIDEC TOSOK CORPORATIONInventor: Yusaku SEKI
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Publication number: 20210091642Abstract: 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: ApplicationFiled: September 11, 2020Publication date: March 25, 2021Applicant: NIDEC TOSOK CORPORATIONInventor: Yusaku SEKI
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Publication number: 20210067011Abstract: 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: ApplicationFiled: August 19, 2020Publication date: March 4, 2021Applicant: NIDEC TOSOK CORPORATIONInventor: Yusaku SEKI
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Publication number: 20210062802Abstract: 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: ApplicationFiled: August 19, 2020Publication date: March 4, 2021Applicant: NIDEC TOSOK CORPORATIONInventor: Yusaku SEKI
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Publication number: 20210003315Abstract: 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: ApplicationFiled: September 7, 2017Publication date: January 7, 2021Inventors: Yusaku SEKI, Tatsuo FURUTA, Naoya MATSUNAGA
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Publication number: 20200313517Abstract: 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: ApplicationFiled: February 21, 2020Publication date: October 1, 2020Inventors: Yusaku SEKI, Chisato SEKIGUCHI, Junichi TAKAO, Yasuaki KONAGAYA
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Publication number: 20190368751Abstract: 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: ApplicationFiled: February 23, 2017Publication date: December 5, 2019Inventors: Yusaku SEKI, Tetsuya TAZAWA, Keisuke TOMOMURA
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Publication number: 20180254685Abstract: 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: ApplicationFiled: February 28, 2018Publication date: September 6, 2018Inventor: Yusaku SEKI
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Patent number: D804475Type: GrantFiled: December 29, 2016Date of Patent: December 5, 2017Assignee: BROTHER INDUSTRIES, LTD.Inventor: Yusaku Seki
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Patent number: D805072Type: GrantFiled: June 22, 2016Date of Patent: December 12, 2017Assignee: BROTHER INDUSTRIES, LTD.Inventor: Yusaku Seki
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Patent number: D818532Type: GrantFiled: September 30, 2015Date of Patent: May 22, 2018Assignee: BROTHER INDUSTRIES, LTD.Inventors: Yukihiko Sato, Yusaku Seki, Hiromitsu Tanaka
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Patent number: D829277Type: GrantFiled: June 8, 2017Date of Patent: September 25, 2018Assignee: BROTHER INDUSTRIES, LTD.Inventor: Yusaku Seki