Patents by Inventor Kenichi Ozawa

Kenichi Ozawa 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: 11962227
    Abstract: An electric actuator of the disclosure includes a motor, a speed reduction mechanism, and a bearing fixed to a motor shaft having an eccentric axis portion. The speed reduction mechanism has: an externally toothed gear, an internally toothed gear, a facing member facing the externally toothed gear, column members protruding from one member of the facing member and the externally toothed gear toward the other member and surrounding the motor axis, and at least one tube member surrounding the column members. The other member has hole portions surrounding the motor axis. The column members are inserted into the hole portions respectively, and support the externally toothed gear to be swingable around the motor axis via an inner side surface of each of the hole portions. The at least one tube member surrounds the column members in the hole portions and is rotatable around a rotary axis passing through the hole portions.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: April 16, 2024
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Hiroshi Shirai, Kohei Osuga, Kenichi Ozawa
  • Publication number: 20240030538
    Abstract: A battery unit includes a battery cell, and a metal case in which a battery cell is stored, the metal case including a bottom surface, and a first side wall and a second side wall erected from a peripheral edge of the bottom surface and having inner surfaces opposing each other, in which the first side wall and the second side wall protrude further than an upper surface of the battery cell, and a distance between an inner surface of the first side wall and an inner surface of the second side wall is larger on an end side, which is an opposite side to a bottom surface side, than on the bottom surface side.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 25, 2024
    Inventors: Kenichi OZAWA, Masaki KURATSUKA, Josh CHIANG, Ken CHEN
  • Publication number: 20230076491
    Abstract: Disclosed is a battery pack including a secondary battery and a circuit board, in which the secondary battery includes a metal exterior portion, a first external terminal, and a second external terminal, the circuit board has a plurality of connection portions connected to the first external terminal or the second external terminal, at least one of the connection portions has a first opening, and the connection portion having the first opening is solder-bonded to the first external terminal or the second external terminal.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 9, 2023
    Inventors: Masashi SATO, Ken SATO, Kenichi OZAWA, Fumio MATUMOTO
  • Publication number: 20230071591
    Abstract: A battery pack includes a secondary battery and a circuit board, in which the secondary battery includes a metal exterior part, a first external terminal disposed at a center part of an end surface of the metal exterior part, and a second external terminal disposed so as to surround a periphery of the first external terminal, and the circuit board includes a first connection part connected to the first external terminal and a second connection part connected to the second external terminal; the battery pack including an insulating part that insulates the first connection part from the second connection part, the first connection part and the second connection part being disposed in an identical plane.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 9, 2023
    Inventors: Ken SATO, Kenichi OZAWA, Masashi SATO
  • Patent number: 11600869
    Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a first stack limiting structure and a second stack limiting structure, wherein the second stack limiting structure is disposed opposite and with a fixed distance to the first stack limiting structure; a plurality of pouch cells, wherein the pouch cells are disposed in a stack, wherein the stack is disposed between the first stack limiting structure and the second stack limiting structure and a height of the stack in a stack direction is limited by the first stack limiting structure and the second stack limiting structure; and a sensor arrangement. The sensor arrangement is disposed in the stack. The sensor arrangement extends across a major part of a surface of the pouch cells and is configured such that the height of the stack across the extension is approximately equal. The sensor arrangement has a pressure sensor.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: March 7, 2023
    Assignees: Andreas Stihl AG & Co. KG, Murata Manufacturing Co., Ltd.
    Inventors: Daniel Sauerteig, Julien Scholl, Kenichi Ozawa, Takayuki Sato, Daiki Misawa, Yosuke Kono, Masaki Kuratsuka
  • Publication number: 20220209356
    Abstract: A battery pack includes a circuit board, a battery cell, an exterior case having a cylindrical shape, and a pair of external terminals respectively provided at both ends of the exterior case, in which each of the external terminals includes an inserted portion to be inserted into the exterior case and an uninserted portion not to be inserted into the exterior case, at least a part of the circuit board is disposed between the battery cell and the external terminals, and an elastic resin is provided so as to be in contact with the battery cell, the at least part of the circuit board, and the external terminals.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 30, 2022
    Inventors: Ken SATO, Madoka HAMANO, Kenichi OZAWA, Masashi SATO, Mikio YAMAMOTO, Hiroyuki ITO
  • Publication number: 20210384798
    Abstract: An electric actuator of the disclosure includes a motor, a speed reduction mechanism, and a bearing fixed to a motor shaft having an eccentric axis portion. The speed reduction mechanism has: an externally toothed gear, an internally toothed gear, a facing member facing the externally toothed gear, column members protruding from one member of the facing member and the externally toothed gear toward the other member and surrounding the motor axis, and at least one tube member surrounding the column members. The other member has hole portions surrounding the motor axis. The column members are inserted into the hole portions respectively, and support the externally toothed gear to be swingable around the motor axis via an inner side surface of each of the hole portions. The at least one tube member surrounds the column members in the hole portions and is rotatable around a rotary axis passing through the hole portions.
    Type: Application
    Filed: June 7, 2021
    Publication date: December 9, 2021
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Hiroshi SHIRAI, Kohei OSUGA, Kenichi OZAWA
  • Patent number: 10978939
    Abstract: An electric actuator includes a first wiring member with a first connection portion exposed to one side in an axial-direction of a first case and a second wiring member with a second connection portion exposed to another side in the axial-direction of a second case, the first and second connection portions each having two opposing portions that respectively oppose in first and second directions with first and second gaps therebetween, the first gap having a narrow portion and a wide portion (larger in the first direction) connected thereto on the other side in the axial-direction, the second gap having a narrow portion and a wide portion (larger in the second direction) connected thereto on the one side in the axial-direction, and the first and second gaps overlapping at least partially when the first and second case are fixed, and the first and second connection portions are electrically connected.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: April 13, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Hiroshi Shirai, Shuichi Kinjo, Yutaka Uematsu, Kenichi Ozawa
  • Patent number: 10946314
    Abstract: A pressure control device is provided and includes a body which has a groove-shaped flow path including a groove part and a widened part connected to the groove part and having a width larger than a width of the groove part, and a filter unit which captures foreign matters mixed in a fluid which passes through the groove-shaped flow path. The filter unit includes a frame body being in a cylindrical shape and including a through hole part which penetrates in a direction along a central axis, and at least one filter member being in a planar plate shape disposed to intercept the through hole part and supported inside the frame body, in which the filter unit is accommodated in the widened part so that a direction orthogonal to the central axis of the frame body is along a depth direction of the widened part.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: March 16, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Masaru Miyagi, Kenichi Ozawa
  • Patent number: 10907665
    Abstract: A pressure control device includes a body having a groove-shaped flow path including a groove part and a widened part, and a filter unit capturing foreign matters mixed in a fluid which passes through the groove-shaped flow path; the filter unit having a frame body including a through hole part and a filter member in a planar plate shape disposed with respect to the through hole part, and the filter unit being accommodated in the widened part. The frame body has: a first part having a first shape, a second part having a second shape smaller than the first shape, and a step part located at a boundary part between the first part and the second part The second part has a storage part provided in a penetrating manner on a bottom part side of the groove-shaped flow path and storing the captured foreign matters.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: February 2, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Masaru Miyagi, Kenichi Ozawa
  • Publication number: 20200358145
    Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a first stack limiting structure and a second stack limiting structure, wherein the second stack limiting structure is disposed opposite and with a fixed distance to the first stack limiting structure; a plurality of pouch cells, wherein the pouch cells are disposed in a stack, wherein the stack is disposed between the first stack limiting structure and the second stack limiting structure and a height of the stack in a stack direction is limited by the first stack limiting structure and the second stack limiting structure; and a sensor arrangement. The sensor arrangement is disposed in the stack. The sensor arrangement extends across a major part of a surface of the pouch cells and is configured such that the height of the stack across the extension is approximately equal. The sensor arrangement has a pressure sensor.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 12, 2020
    Inventors: Daniel SAUERTEIG, Julien SCHOLL, Kenichi OZAWA, Takayuki SATO, Daiki MISAWA, Yosuke KONO, Masaki KURATSUKA
  • Publication number: 20200358053
    Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power. The battery pack includes: a plurality of pouch cells, wherein the pouch cells have cell tabs and are configured and disposed in a stack such that the cell tabs are disposed on a common tab side of the stack in two tab columns, wherein averted end limits of the tab columns define an intermediate zone, and a circuit board. The circuit board is disposed within the intermediate zone and is electrically connected to the cell tabs.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 12, 2020
    Inventors: Daniel SAUERTEIG, Julien SCHOLL, Kenichi OZAWA, Takayuki SATO, Daiki MISAWA, Malte VON HOFEN, Daniel WAGNER, Marcel WILKA, Martin SCHURR, Uwe BOSSMANN, Dirk LIEPOLD
  • Publication number: 20200358055
    Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes: a plurality of accumulator cells, wherein the accumulator cells have cell contacts; at least one circuit board, wherein the at least one circuit board is electrically connected to the cell contacts; and a battery pack housing, wherein the battery pack housing has a first battery pack housing part and a second battery pack housing part, wherein the first battery pack housing part and the second battery pack housing part are closed by each other. The accumulator cells are disposed within the battery pack housing.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 12, 2020
    Inventors: Daniel SAUERTEIG, Julien SCHOLL, Kenichi OZAWA, Takayuki SATO, Daiki MISAWA, Daniel WAGNER, Marcel WILKA, Martin SCHURR, Uwe BOSSMANN, Dirk LIEPOLD
  • Publication number: 20200358060
    Abstract: A battery pack supplies an electrically driven treatment apparatus with an electric driving power. The battery pack includes: a stack housing, wherein the stack housing has a common housing opening defined by a housing edge, and a plurality of pouch cells, wherein the pouch cells have cell tabs and are configured and disposed in a stack within the stack housing such that the cell tabs at least with tab parts on the common housing opening project beyond at least one edge portion of the housing edge. The tab parts are directly electrically connected to each other by welded connections.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 12, 2020
    Inventors: Daniel SAUERTEIG, Julien SCHOLL, Kenichi OZAWA, Takayuki SATO, Daiki MISAWA, Marcel WILKA, Martin SCHURR, Uwe BOSSMANN, Dirk LIEPOLD, Daniel WAGNER
  • Publication number: 20200276524
    Abstract: A pressure control device is provided and includes a body which has a groove-shaped flow path including a groove part and a widened part connected to the groove part and having a width larger than a width of the groove part, and a filter unit which captures foreign matters mixed in a fluid which passes through the groove-shaped flow path. The filter unit includes a frame body being in a cylindrical shape and including a through hole part which penetrates in a direction along a central axis, and at least one filter member being in a planar plate shape disposed to intercept the through hole part and supported inside the frame body, in which the filter unit is accommodated in the widened part so that a direction orthogonal to the central axis of the frame body is along a depth direction of the widened part.
    Type: Application
    Filed: February 11, 2020
    Publication date: September 3, 2020
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Masaru MIYAGI, Kenichi OZAWA
  • Publication number: 20200277974
    Abstract: A pressure control device includes a body having a groove-shaped flow path including a groove part and a widened part, and a filter unit capturing foreign matters mixed in a fluid which passes through the groove-shaped flow path; the filter unit having a frame body including a through hole part and a filter member in a planar plate shape disposed with respect to the through hole part, and the filter unit being accommodated in the widened part. The frame body has: a first part having a first shape, a second part having a second shape smaller than the first shape, and a step part located at a boundary part between the first part and the second part The second part has a storage part provided in a penetrating manner on a bottom part side of the groove-shaped flow path and storing the captured foreign matters.
    Type: Application
    Filed: February 12, 2020
    Publication date: September 3, 2020
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Masaru MIYAGI, Kenichi OZAWA
  • Patent number: 10734617
    Abstract: A battery module includes a plurality of flat or square type batteries that each have a positive terminal and a negative terminal; a holder that has an opening, and retains the batteries in such a manner that the positive terminal and the negative terminal are positioned toward the opening, and that the principal surfaces of the batteries face each other; a cover that is disposed over the opening; a circuit board that is disposed over the cover; and a plurality of connection members that are disposed between the cover and the circuit board to electrically connect the positive terminal and negative terminal. Some of the connection members retain a peripheral portion of the circuit board.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 4, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hirotaka Sakai, Fumihiko Suzuki, Yasushi Mori, Kenichi Ozawa
  • Patent number: 10591051
    Abstract: A sensor mounting may include an accommodation unit; a sensor case; and a screw member. A flow passage body may include the accommodation unit, and a flow passage opening. The fluid pressure sensor may include a sensor main body, and the sensor case. The sensor case may include a sensing hole. The sensor case may include a columnar portion disposed along a center axis, and a flange portion which protrudes from the columnar portion. The accommodation unit may include a female screw provided in a radially inside surface of the accommodation unit. The screw member may include the screw member may include a hole portion, and a male screw. The screw member may be disposed to be opposed to an upper side of the flange portion.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: March 17, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Hiroshi Shirai, Tomoka Osawa, Toshiaki Nakamura, Kenichi Ozawa
  • Patent number: 10345181
    Abstract: A guide protrusion includes first walls protruding upwards from an upper face of a body, facing each other across an opening in a first direction, and first protrusions protruding from each first wall toward the other. A receptive portion between the first walls has a first opening, opening to one side in a second direction orthogonal to the first direction. The sensor case is received from the first opening following the second direction. The guide protrusion has a first movement restricting face facing another side in the second direction. The sensor case includes a columnar portion extending vertically through a gap between the first protrusions, a flange at least partially between the upper face and the first protrusions in the vertical direction, within the receptive portion, and a facing portion on the other side of the first movement restricting face in the second direction, facing the first movement restricting face.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 9, 2019
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Tomoka Osawa, Hironobu Wakabayashi, Toshiaki Nakamura, Hiroshi Tatsuta, Kenichi Ozawa
  • Publication number: 20190036422
    Abstract: An electric actuator includes a first wiring member with a first connection portion exposed to one side in an axial-direction of a first case and a second wiring member with a second connection portion exposed to another side in the axial-direction of a second case, the first and second connection portions each having two opposing portions that respectively oppose in first and second directions with first and second gaps therebetween, the first gap having a narrow portion and a wide portion (larger in the first direction) connected thereto on the other side in the axial-direction, the second gap having a narrow portion and a wide portion (larger in the second direction) connected thereto on the one side in the axial-direction, and the first and second gaps overlapping at least partially when the first and second case are fixed, and the first and second connection portions are electrically connected.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 31, 2019
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Hiroshi SHIRAI, Shuichi KINJO, Yutaka UEMATSU, Kenichi OZAWA