Patents by Inventor Akihito NAITO

Akihito NAITO 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: 11585606
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing, and is in contact with the microchannel. An area of the wick is larger than an area of a region corresponding to the microchannel in a plan view of the vapor chamber.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: February 21, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihito Naito, Nobuhito Tsubaki
  • Patent number: 11473850
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing, and is in contact with the microchannel. The microchannel includes a plurality of convexes, and an area ratio of the plurality of convexes of the microchannel to an entire area of the microchannel is 5% to 40% in a plan view of the vapor chamber.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: October 18, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Akihito Naito
  • Patent number: 11473849
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing and is in contact with the microchannel. A contact area between the wick and the microchannel is 5% to 40% with respect to an area of the internal space taken as a plane.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: October 18, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Akihito Naito
  • Patent number: 11374443
    Abstract: A rotary electric machine is provided including: a stator having a stator core having an annular shape; a rotor disposed facing the stator in a radial direction, including one pair or a plurality of pairs of magnetic poles along a circumferential direction; and a housing having a cylindrical shape, in which the stator core is fixed to an inner periphery surface thereof, in which the stator core includes a back yoke having an annular shape fixed to the inner periphery surface of the housing, and a teeth provided along the radial direction from an inner periphery of the back yoke; a cutout that opens outwards the radial direction is provided in an outer periphery of the back yoke; and the cutout is provided to overlap a range of the teeth in the circumferential direction.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: June 28, 2022
    Assignee: DENSO CORPORATION
    Inventors: Akihito Naito, Katsuya Fujisaki
  • Publication number: 20210356215
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing, and is in contact with the microchannel. An area of the wick is larger than an area of a region corresponding to the microchannel in a plan view of the vapor chamber.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventors: Akihito Naito, Nobuhito Tsubaki
  • Publication number: 20210356214
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The microchannel has a plurality of convexes forming a flow path, the wick has a plurality of holes, an area of the plurality of holes with respect to an entire area of the wick is 5 to 50%, a thickness of the wick is 5 to 35 ?m, a sectional area of the plurality of convexes is 150 to 25000 ?m, and a pitch P1 of the plurality of convexes is 100 to 1000 ?m.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventor: Akihito Naito
  • Publication number: 20210356212
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing and is in contact with the microchannel. A contact area between the wick and the microchannel is 5% to 40% with respect to an area of the internal space taken as a plane.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventor: Akihito Naito
  • Publication number: 20210356211
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet, and a lower casing sheet. A joining member joins the upper casing sheet and the lower casing sheet together at an outer edge such that the upper casing sheet and the lower casing sheet face each other and define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing, and is in contact with the microchannel. A difference between a thickness of the joining member and a thickness of the wick is 20 ?m or less.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventor: Akihito Naito
  • Publication number: 20210356213
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The working fluid is sealed in the internal space. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing, and is in contact with the microchannel. The microchannel includes a plurality of convexes, and an area ratio of the plurality of convexes of the microchannel to an entire area of the microchannel is 5% to 40% in a plan view of the vapor chamber.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventor: Akihito Naito
  • Patent number: 11013145
    Abstract: The vapor chamber includes a casing, a working fluid, a microchannel, and a wick. The casing includes an upper casing sheet and a lower casing sheet that face each other and are joined together at an outer edge so as to define an internal space therebetween. The microchannel is in the lower casing sheet and in communication with the internal space so as to form a flow path for the working fluid. The wick is in the internal space of the casing, and is in contact with the microchannel. The microchannel has a plurality of convexes that form the flow path, an area ratio of an area of the plurality of convexes to an entire area of the microchannel is 5% to 40% in a plan view of the vapor chamber, and a height of the plurality of convexes is 5 to 50 ?m.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: May 18, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Akihito Naito
  • Patent number: 10816274
    Abstract: A vapor chamber that includes a housing having a first sheet and a second sheet that oppose each other and of which respective peripheral regions are joined to each other to form a sealing portion. The vapor chamber also includes a working liquid enclosed within the housing and a wick structure on an inside surface of the first sheet or the second sheet. In the vapor chamber, the sealing portion includes a first portion having a first width and a second portion having a second width, the first width being greater than the second width. A specially shaped portion is present in the first portion. The specially shaped portion is a portion at which an inclination angle of the first sheet and/or the second sheet is greater than a second inclination angle of a portion of the first sheet and/or the second sheet outside of the specifically shaped portion.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: October 27, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Akihito Naito, Hiroki Achiwa
  • Publication number: 20200292245
    Abstract: A vapor chamber that includes a housing having a first sheet and a second sheet that oppose each other and of which respective peripheral regions are joined to each other to form a sealing portion. The vapor chamber also includes a working liquid enclosed within the housing and a wick structure on an inside surface of the first sheet or the second sheet. In the vapor chamber, the sealing portion includes a first portion having a first width and a second portion having a second width, the first width being greater than the second width. A specially shaped portion is present in the first portion. The specially shaped portion is a portion at which an inclination angle of the first sheet and/or the second sheet is greater than a second inclination angle of a portion of the first sheet and/or the second sheet outside of the specifically shaped portion.
    Type: Application
    Filed: April 16, 2020
    Publication date: September 17, 2020
    Inventors: Akihito Naito, Hiroki Achiwa
  • Publication number: 20200106311
    Abstract: A rotary electric machine is provided including: a stator having a stator core having an annular shape; a rotor disposed facing the stator in a radial direction, including one pair or a plurality of pairs of magnetic poles along a circumferential direction; and a housing having a cylindrical shape, in which the stator core is fixed to an inner periphery surface thereof, in which the stator core includes a back yoke having an annular shape fixed to the inner periphery surface of the housing, and a teeth provided along the radial direction from an inner periphery of the back yoke; a cutout that opens outwards the radial direction is provided in an outer periphery of the back yoke; and the cutout is provided to overlap a range of the teeth in the circumferential direction.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 2, 2020
    Inventors: Akihito NAITO, Katsuya FUJISAKI
  • Patent number: 10502638
    Abstract: A temperature detector is configured to detect the temperature of a housing while in contact with the housing, and a spring pin is in contact with the temperature detector in a separable manner. Thus, at mounting of the temperature detecting device on an electronic device, it is possible to fix the temperature detector to the housing, and the spring pin to a circuit board of the electronic device. At disassembly of the electronic device, it is easy to separate the spring pin from the temperature detector by removing, from the housing, the spring pin together with the circuit board. At assembly of the electronic device, it is easy for the spring pin to contact the temperature detector by attaching, to the housing, the spring pin together with the circuit board.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: December 10, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tadamasa Miura, Kazuto Miyagawa, Akihito Naito
  • Publication number: 20170131156
    Abstract: A temperature detector is configured to detect the temperature of a housing while in contact with the housing, and a spring pin is in contact with the temperature detector in a separable manner. Thus, at mounting of the temperature detecting device on an electronic device, it is possible to fix the temperature detector to the housing, and the spring pin to a circuit board of the electronic device. At disassembly of the electronic device, it is easy to separate the spring pin from the temperature detector by removing, from the housing, the spring pin together with the circuit board. At assembly of the electronic device, it is easy for the spring pin to contact the temperature detector by attaching, to the housing, the spring pin together with the circuit board.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Inventors: Tadamasa MIURA, Kazuto MIYAGAWA, Akihito NAITO