Patents by Inventor Akihiko Makita

Akihiko Makita 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: 11725650
    Abstract: A liquid feeder switches a flow path of a liquid having flowed in from an inflow port to one of a flow path communicating with a first base communication port and a bypass outflow path. When a pump is attached to a base, the bypass outflow path is closed to allow the liquid having flowed in from the inflow port to flow to the pump. When the pump is removed from the base, the bypass outflow path is opened to allow the liquid having flowed in from the inflow port to flow from the bypass outflow path to the outflow port. The liquid feeder is able to prevent liquid leakage when a pump of a liquid feeder is replaced or repaired.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: August 15, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Yoshihisa Kitamura, Takaya Okuno, Toshihiko Tokeshi, Takehito Tamaoka, Akihiko Makita
  • Patent number: 11470743
    Abstract: A cooling device includes at least two cooling units, each cooling unit including a plate-shaped cold plate extending in a horizontal direction, a radiator extending in a first direction perpendicular to the horizontal direction and having a plurality of plate-shaped fins which, on the cold plate, is disposed parallel to a second direction perpendicular to the first direction, and a pump which supplies a refrigerant liquid to the cold plate and the radiator, in which the pump is adjacent to the radiator and is disposed in the second direction of the radiator, and the pump of one first cooling unit of the two cooling units faces the other second cooling unit of the two cooling units in the second direction or in a third direction orthogonal to the first direction and the second direction.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: October 11, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Toshihiko Tokeshi, Nobuya Nakae, Takahiro Imanishi, Akihiko Makita, Takehito Tamaoka
  • Publication number: 20220057124
    Abstract: A liquid feeder switches a flow path of a liquid having flowed in from an inflow port to one of a flow path communicating with a first base communication port and a bypass outflow path. When a pump is attached to a base, the bypass outflow path is closed to allow the liquid having flowed in from the inflow port to flow to the pump. When the pump is removed from the base, the bypass outflow path is opened to allow the liquid having flowed in from the inflow port to flow from the bypass outflow path to the outflow port. The liquid feeder is able to prevent liquid leakage when a pump of a liquid feeder is replaced or repaired.
    Type: Application
    Filed: June 25, 2021
    Publication date: February 24, 2022
    Inventors: Yoshihisa KITAMURA, Takaya OKUNO, Toshihiko TOKESHI, Takehito TAMAOKA, Akihiko MAKITA
  • Patent number: 11252837
    Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling and pipes each defining a second coolant passage in communication with the first coolant passage, a pump to circulate the coolant, a first tank joined to one end of each of the pipes, and a second tank to join another end of each of the pipes to the pump. The radiator is provided on the cold plate, and the pump is adjacent to the second tank.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: February 15, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Nobuya Nakae, Akihiko Makita, Hidenobu Takeshita, Tomotsugu Sugiyama, Toshihiko Tokeshi, Takehito Tamaoka
  • Patent number: 11236738
    Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling, and a second coolant passage in which the coolant flows, and a pump connected to each of the first coolant passage and the second coolant passage to circulate the coolant. The radiator is provided on the cold plate. The pump is adjacent to the radiator.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: February 1, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Nobuya Nakae, Akihiko Makita, Hidenobu Takeshita, Tomotsugu Sugiyama
  • Patent number: 11147187
    Abstract: A cooling device includes at least two cooling units, each cooling unit including a plate-shaped cold plate extending in a horizontal direction, a radiator extending in a first direction perpendicular to the horizontal direction and having a plurality of plate-shaped fins which, on the cold plate, is disposed parallel to a second direction perpendicular to the first direction, and a pump which supplies a refrigerant liquid to the cold plate and the radiator, in which the pump is adjacent to the radiator and is disposed in the second direction of the radiator, and the pump of one first cooling unit of the two cooling units faces the other second cooling unit of the two cooling units in the second direction or in a third direction orthogonal to the first direction and the second direction.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: October 12, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Toshihiko Tokeshi, Nobuya Nakae, Takahiro Imanishi, Akihiko Makita, Takehito Tamaoka
  • Publication number: 20210282298
    Abstract: A cooling device includes at least two cooling units, each cooling unit including a plate-shaped cold plate extending in a horizontal direction, a radiator extending in a first direction perpendicular to the horizontal direction and having a plurality of plate-shaped fins which, on the cold plate, is disposed parallel to a second direction perpendicular to the first direction, and a pump which supplies a refrigerant liquid to the cold plate and the radiator, in which the pump is adjacent to the radiator and is disposed in the second direction of the radiator, and the pump of one first cooling unit of the two cooling units faces the other second cooling unit of the two cooling units in the second direction or in a third direction orthogonal to the first direction and the second direction.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 9, 2021
    Inventors: Toshihiko TOKESHI, Nobuya NAKAE, Takahiro IMANISHI, Akihiko MAKITA, Takehito TAMAOKA
  • Publication number: 20200146181
    Abstract: A cooling device includes at least two cooling units, each cooling unit including a plate-shaped cold plate extending in a horizontal direction, a radiator extending in a first direction perpendicular to the horizontal direction and having a plurality of plate-shaped fins which, on the cold plate, is disposed parallel to a second direction perpendicular to the first direction, and a pump which supplies a refrigerant liquid to the cold plate and the radiator, in which the pump is adjacent to the radiator and is disposed in the second direction of the radiator, and the pump of one first cooling unit of the two cooling units faces the other second cooling unit of the two cooling units in the second direction or in a third direction orthogonal to the first direction and the second direction.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 7, 2020
    Applicant: NIDEC CORPORATION
    Inventors: Toshihiko TOKESHI, Nobuya NAKAE, Takahiro IMANISHI, Akihiko MAKITA, Takehito TAMAOKA
  • Publication number: 20200116430
    Abstract: Provided is a cooling device which includes a plurality of cooling units and a blocking member and in which at least a portion of the blocking member is disposed between the cooling units.
    Type: Application
    Filed: October 8, 2019
    Publication date: April 16, 2020
    Applicant: NIDEC CORPORATION
    Inventors: Nobuya NAKAE, Toshihiko TOKESHI, Takahiro IMANISHI, Akihiko MAKITA, Takehito TAMAOKA
  • Patent number: 10605267
    Abstract: This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; a clamper portion fixed to the motor portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. The air blowing portion is held by the motor portion and the clamper portion from upper and lower sides in the axial direction. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: March 31, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Patent number: 10550846
    Abstract: This blower apparatus includes an air blowing portion including a plurality of flat plates; a motor portion; and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an inner annular portion, an outer annular portion arranged radially outside of the inner annular portion, ribs each of which is arranged to join the inner and outer annular portions to each other, and air holes each of which is surrounded by the inner and outer annular portions and circumferentially adjacent ones of the ribs. With the inner annular portion and the outer annular portion being joined to each other through the ribs, an increase in the opening area of each air hole, which is defined between the inner and outer annular portions, can be achieved. This leads to improved air intake efficiency, resulting in improved air blowing efficiency.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 4, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Publication number: 20190307020
    Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling, and a second coolant passage in which the coolant flows, and a pump connected to each of the first coolant passage and the second coolant passage to circulate the coolant. The radiator is provided on the cold plate. The pump is adjacent to the radiator.
    Type: Application
    Filed: March 11, 2019
    Publication date: October 3, 2019
    Inventors: Nobuya NAKAE, Akihiko MAKITA, Hidenobu TAKESHITA, Tomotsugu SUGIYAMA
  • Publication number: 20190307019
    Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling and pipes each defining a second coolant passage in communication with the first coolant passage, a pump to circulate the coolant, a first tank joined to one end of each of the pipes, and a second tank to join another end of each of the pipes to the pump. The radiator is provided on the cold plate, and the pump is adjacent to the second tank.
    Type: Application
    Filed: March 11, 2019
    Publication date: October 3, 2019
    Inventors: Nobuya NAKAE, Akihiko MAKITA, Hidenobu TAKESHITA, Tomotsugu SUGIYAMA, Toshihiko TOKESHI, Takehito TAMAOKA
  • Patent number: 10253786
    Abstract: This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. At least one of the flat plates includes, in at least one of an upper surface and a lower surface thereof, a plurality of guide portions each of which is a protruding portion or recessed portion arranged to extend in a radial direction. An air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. Since the air flow is generated between the flat plates, the air flow does not easily leak upwardly or downwardly.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 9, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Patent number: 10247201
    Abstract: This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. The air blowing portion includes a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; and a spacer arranged between the flat plates. A rotating portion of the motor portion includes a hub including a flat plate holding portion arranged to hold at least one of the flat plates. An air flow is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. With the spacer being arranged between the flat plates, the axial gap can be adjusted. Since at least one of the flat plates is held by the flat plate holding portion, the air blowing portion is able to stably rotate.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 2, 2019
    Assignee: NIDEC CORPORATION
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Patent number: 9976570
    Abstract: This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an air hole. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. Since the air flow is generated between the flat plates, the air flow does not easily leak upwardly or downwardly, and thus, an improvement in air blowing efficiency is achieved. Since the air hole is defined in the flat plate(s), gas can be easily supplied to the axial gap, resulting in improved air blowing efficiency. In addition, with each spacer being arranged between the flat plates, the axial gap can be adjusted to have a desired axial dimension.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: May 22, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Publication number: 20170356455
    Abstract: This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. At least one of the flat plates is defined by a non-perfect circular flat plate having an outer edge configuration in which specific configurations repeatedly appear one after another in a circumferential direction in a plan view. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 14, 2017
    Applicant: Nidec Corporation
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Publication number: 20170356461
    Abstract: This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an air hole. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat plates by viscous drag of surfaces of the flat plates and a centrifugal force. Since the air flow is generated between the flat plates, the air flow does not easily leak upwardly or downwardly, and thus, an improvement in air blowing efficiency is achieved. Since the air hole is defined in the flat plate(s), gas can be easily supplied to the axial gap, resulting in improved air blowing efficiency. In addition, with each spacer being arranged between the flat plates, the axial gap can be adjusted to have a desired axial dimension.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 14, 2017
    Applicant: Nidec Corporation
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Publication number: 20170356458
    Abstract: This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The flat plates include an air hole arranged to pass therethrough in an axial direction. Once the air blowing portion starts rotating, an air flow traveling radially outward is generated between the flat, plates by viscous drag of surfaces of the flat plates and a centrifugal force. Thus, gas supplied through the air inlet and the air hole travels radially outwardly of the air blowing portion. Accordingly, a reduced thickness of the blower apparatus does not result in a significant reduction in the air blowing efficiency.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 14, 2017
    Applicant: Nidec Corporation
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita
  • Publication number: 20170356460
    Abstract: This blower apparatus includes an air blowing portion including a plurality of flat plates; a motor portion; and a housing. The housing includes an air inlet and an air outlet. At least one of the flat plates includes an inner annular portion, an outer annular portion arranged radially outside of the inner annular portion, ribs each of which is arranged to join the inner and outer annular portions to each other, and air holes each of which is surrounded by the inner and outer annular portions and circumferentially adjacent ones of the ribs. With the inner annular portion and the outer annular portion being joined to each other through the ribs, an increase in the opening area of each air hole, which is defined between the inner and outer annular portions, can be achieved. This leads to improved air intake efficiency, resulting in improved air blowing efficiency.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 14, 2017
    Applicant: Nidec Corporation
    Inventors: Yuko Hino, Seung-Sin Yoo, Tomoyuki Tsukamoto, Akihiko Makita