Patents by Inventor SHUSAKU TOMIZAWA

SHUSAKU TOMIZAWA 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: 11963333
    Abstract: An electronic apparatus includes: a chassis; a heat generating element provided in the chassis; and a cooling device that has a cooling fin, a heat pipe connecting the cooling fin and the heat generating element, and a pressing assembly pressing the heat pipe against the heat generating element, and is provided in the chassis. The heat pipe has: a heat absorbing section that absorbs heat generated by the heat generating element; and a thin plate section having a thickness which is smaller than that of the heat absorbing section. The pressing assembly has: a base assembly relatively fixed to the chassis; and a bridge section that is provided integrally with the base assembly and placed on a surface of the thin plate section in such a manner as to extend over the heat pipe in a width direction.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: April 16, 2024
    Assignee: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Masahiro Kitamura, Akinori Uchino, Shusaku Tomizawa
  • Publication number: 20240121909
    Abstract: A centrifugal fan includes: a fan having a motor that rotates around a central axis, and a plurality of blades provided on an outer periphery of the motor; and a casing which accommodates the fan, and has an intake port provided in the axial direction of the central axis, and an exhaust port provided in a direction orthogonal to the central axis, wherein an end surface of each of the plurality of blades that faces the intake port is provided with an inclined portion that inclines such that a height thereof in the axial direction gradually decreases toward the motor, and the plurality of blades include a plurality of blade groups having different start point positions at which the inclined portions start to incline in a direction from the tips of the blades toward the motor.
    Type: Application
    Filed: August 16, 2023
    Publication date: April 11, 2024
    Applicant: Lenovo (Singapore) Pte. Ltd.
    Inventors: Masahiro Kitamura, Junki Hashiba, Shusaku Tomizawa, Takateru Adachi
  • Publication number: 20230422446
    Abstract: A cooling module includes a fan, a heat sink, and a first heat pipe and a second heat pipe that are connected to a first surface of the heat sink. The heat sink includes a valley portion in which the second surface is recessed toward a side of the first surface, a first mountain portion that is between the valley portion and the air introduction surface and has a greater height of the fin than the valley portion, and a second mountain portion that is between the valley portion and the air exhaust surface and has a greater height of the fin than the valley portion. The first mountain portion is disposed at a position overlapping the first heat pipe, and the second mountain portion is disposed at a position overlapping the second heat pipe.
    Type: Application
    Filed: March 23, 2023
    Publication date: December 28, 2023
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Junki Hashiba, Masahiro Kitamura, Shusaku Tomizawa
  • Publication number: 20230403823
    Abstract: A vapor chamber includes: a first metal plate; a second metal plate having an outer edge portion joined to the first metal plate and forming a sealed space in which working fluid is enclosed, the sealed space being formed between the first metal plate and the second metal plate; and a wick stored inside the sealed space. The first metal plate has a through-hole communicating with the sealed space, and the vapor chamber further includes a metal block inserted into the through-hole and joined to the first metal plate to seal the through-hole, the metal block having an outer surface formed flat on a side opposite to a side facing the sealed space.
    Type: Application
    Filed: April 13, 2023
    Publication date: December 14, 2023
    Applicant: Lenovo (Singapore) Pte. Ltd.
    Inventors: Masahiro Kitamura, Takateru Adachi, Shusaku Tomizawa, Hajime Yoshizawa
  • Publication number: 20230200014
    Abstract: A cooling module includes: a fan having a fan housing with an intake port and an exhaust port; a fin that faces the exhaust port of the fan; a heat pipe connected to a surface of the fin; and a plate-shaped vapor chamber having a first surface and a second surface, the heat pipe being connected to the first surface while straddling one edge of the vapor chamber, the second surface at the one edge being connected to the surface of the fin to be parallel with the heat pipe, so that the one edge is disposed between the heat pipe and the fin.
    Type: Application
    Filed: October 6, 2022
    Publication date: June 22, 2023
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Hao-Yu Wang, Akinori Uchino, Hajime Yoshizawa, Shusaku Tomizawa
  • Publication number: 20230200013
    Abstract: An electronic apparatus includes: a chassis; a first and a second heat generating elements which are placed with a step between surfaces thereof; and a cooling module that absorbs heat generated by the first and the second heat generating elements. The cooling module has: a first heat pipe having a first surface thereof connected to a surface of the first heat generating element; a plate-shaped vapor chamber having a first surface thereof connected to a surface of the second heat generating element and a second surface of the first heat pipe; a second heat pipe which is connected to a second surface of the vapor chamber and overlaps the second heat generating element; a first fin connected to the first heat pipe; and a second fin connected to the second heat pipe.
    Type: Application
    Filed: September 24, 2022
    Publication date: June 22, 2023
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Kengo Sano, Masahiro Kitamura, Junki Hashiba, Shusaku Tomizawa
  • Publication number: 20230189472
    Abstract: An electronic apparatus includes: a chassis; a heating element; a cooling module having a fan, a heat sink, and a heat transport device, the cooling module being configured to cool the heating element. The heat sink includes: a base plate; a plurality of fins standing from the base plate and placed with a gap between the fins to define an air channel through which air from the air outlet flows; and an inclined plate dividing the air channel in two stages in the standing direction of the fins and being gradually inclined from upstream to downstream of the air channel.
    Type: Application
    Filed: September 24, 2022
    Publication date: June 15, 2023
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Hao-Yu Wang, Hajime Yoshizawa, Shusaku Tomizawa, Qianyi Lu, Atsushi Ohyama
  • Publication number: 20220369512
    Abstract: An electronic apparatus includes: a chassis; a heat generating element provided in the chassis; and a cooling device that has a cooling fin, a heat pipe connecting the cooling fin and the heat generating element, and a pressing assembly pressing the heat pipe against the heat generating element, and is provided in the chassis. The heat pipe has: a heat absorbing section that absorbs heat generated by the heat generating element; and a thin plate section having a thickness which is smaller than that of the heat absorbing section. The pressing assembly has: a base assembly relatively fixed to the chassis; and a bridge section that is provided integrally with the base assembly and placed on a surface of the thin plate section in such a manner as to extend over the heat pipe in a width direction.
    Type: Application
    Filed: March 29, 2022
    Publication date: November 17, 2022
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Masahiro Kitamura, Akinori Uchino, Shusaku Tomizawa
  • Patent number: 10356947
    Abstract: An electronic apparatus which can achieve both a reduction in thickness of a chassis and an improvement in a heat releasing performance is provided. An electronic apparatus 10 includes a chassis 12 having an electronic component 18 arranged therein, a heat sink 20 which is provided in the chassis 12 and absorbs heat generated from the electronic component 18 when its one surface 20a is arranged to enable conduction of the heat from the electronic component 18, and a heat conducting sheet 22 which is arranged in the chassis 12, closely arranged on the other surface 20c on the side opposite to the one surface 20a of the heat sink, has an outer shape area larger than an outer shape area of the heat sink 20, and extends to the outside of an outer shape of the heat sink 20.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: July 16, 2019
    Assignee: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Akinori Uchino, Takuroh Kamimura, Hajime Yoshizawa, Shusaku Tomizawa
  • Publication number: 20180027694
    Abstract: An electronic apparatus which can achieve both a reduction in thickness of a chassis and an improvement in a heat releasing performance is provided. An electronic apparatus 10 includes a chassis 12 having an electronic component 18 arranged therein, a heat sink 20 which is provided in the chassis 12 and absorbs heat generated from the electronic component 18 when its one surface 20a is arranged to enable conduction of the heat from the electronic component 18, and a heat conducting sheet 22 which is arranged in the chassis 12, closely arranged on the other surface 20c on the side opposite to the one surface 20a of the heat sink, has an outer shape area larger than an outer shape area of the heat sink 20, and extends to the outside of an outer shape of the heat sink 20.
    Type: Application
    Filed: June 27, 2017
    Publication date: January 25, 2018
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: AKINORI UCHINO, TAKUROH KAMIMURA, HAJIME YOSHIZAWA, SHUSAKU TOMIZAWA