Patents by Inventor Kohei SHIGYOU

Kohei SHIGYOU 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: 11427911
    Abstract: A valve device with a built-in orifice is manufacturable with low-cost. The valve body defines an accommodation recess which opens at the surface of the valve body and contains a valve element therein, a primary flow path and a secondary flow path connected to the accommodation recess, the valve element having a sealing portion for blocking direct communication between the primary flow path and the secondary flow path through the accommodation recess, and a through flow passage for making the primary flow path and the secondary flow path communicate through the valve element, wherein an orifice is formed in the through flow passage.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: August 30, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kazunari Watanabe, Kohei Shigyou, Kenji Aikawa, Tomohiro Nakata, Takahiro Matsuda, Tsutomu Shinohara
  • Publication number: 20220213972
    Abstract: A flow-path forming block includes: a first block; a second block attached to the first block, the second block having a first flow path and a second flow path; and a gasket provided between the first block and the second block, the gasket being configured to seal between the first block and the second block, wherein the second block has a communication portion formed on a surface facing the gasket, the communication portion being configured such that the first flow path and the second flow path are communicated, and the gasket has a recessed portion formed at a position facing the communication portion.
    Type: Application
    Filed: February 18, 2020
    Publication date: July 7, 2022
    Inventors: KAZUNARI WATANABE, KENJI AIKAWA, KOHEI SHIGYOU, TOMOHIRO NAKATA, TAKAHIRO MATSUDA, TSUTOMU SHINOHARA
  • Patent number: 11365830
    Abstract: A valve device can be compact, low cost and has a bleed function. A valve body defines an accommodation recess which opens at a surface of the valve body and contains a valve element therein, a primary flow path and a secondary flow path connected to the accommodation recess, the valve element having a sealing portion for blocking direct communication between the primary flow path and the secondary flow path through the accommodation recess, a detour passage for making the primary flow path and the secondary flow path communicate through the valve element, and a bleed hole for making the detour passage and the secondary flow path communicate through the accommodation recess.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: June 21, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kazunari Watanabe, Kohei Shigyou, Kenji Aikawa, Tomohiro Nakata, Takahiro Matsuda, Tsutomu Shinohara
  • Publication number: 20220186845
    Abstract: A first flow path member has a first sealing surface for supporting one end surface, in a central axis direction, of an annular seal member, and a second flow path member has a second seal surface including a flat surface for supporting a surface of a plate-like member, and a third seal surface for supporting an outer peripheral surface of the annular seal member, wherein: in the annular seal member, an other end surface of the annular seal member is pressed against the back surface of the plate-like member, the one end surface of the annular seal member is pressed against the first seal surface of the first flow path member, and the outer peripheral surface of the annular seal member is pressed against the third seal surface of the second flow path member; and the plate-like member is pressed by the other end surface of the annular seal member.
    Type: Application
    Filed: January 21, 2020
    Publication date: June 16, 2022
    Applicant: FUJIKIN INCORPORATED
    Inventors: Toshiyuki INADA, Kazunari WATANABE, Kenji AIKAWA, Kohei SHIGYOU, Tomohiro NAKATA, Takahiro MATSUDA, Tsutomu SHINOHARA
  • Patent number: 11339881
    Abstract: Provided is a valve device in which influence of a physical impact on a valve element is further reduced. Valve device includes a valve seat disposed around an opening connected to a flow path formed in a valve body, a diaphragm for opening and closing flow path by moving between a contact position and a non-contact position with respect to the valve seat, a presser adapter that contacts a peripheral portion of the diaphragm, a casing that incorporates an actuator for actuating the diaphragm and is fixed on the valve body by being screwed into a screw hole formed in the valve body, and an adapter fixing ring that is screwed into the screw hole and thereby fixed in the valve body while pressing the presser adapter and the diaphragm.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: May 24, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kazunari Watanabe, Kohei Shigyou, Yohei Sawada, Tomohiro Nakata, Tsutomu Shinohara
  • Patent number: 11320056
    Abstract: The present invention provides a miniaturized valve device capable of dramatically increasing the degree of freedom in arranging a flow path of a valve body while securing a necessary flow rate. The valve device includes a valve seat support provided in an accommodation recess and having a support surface with which a sealing surface of a valve seat abuts and supports a pressing force from the sealing surface; a diaphragm provided in the accommodation recess so as to abut and be separable from a seating surface of the valve seat and seals the opening side of the accommodation recess; the valve seat support having sealing surfaces which cooperates with a part of the inner wall surface of the accommodation recess to bock the communication between a primary flow path and a secondary flow path, and a detour passage that connects the primary flow path and a flow passage of the valve seat.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: May 3, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kazunari Watanabe, Kohei Shigyou, Kenji Aikawa, Tomohiro Nakata, Takahiro Matsuda, Tsutomu Shinohara
  • Publication number: 20220057002
    Abstract: A diaphragm valve includes: a valve body having flow paths of fluids formed therein and having a diaphragm-arrangement portion on one surface; a diaphragm arranged in the diaphragm-arrangement portion and can open and close the flow path and adjust the opening degree of by elastic deformation; and a driving unit having a stem for pressing the diaphragm to elastically deform and an actuator for driving the stem, wherein the stem is axially movably held via a resin sleeve by a bonnet fixed to the valve body side.
    Type: Application
    Filed: September 3, 2019
    Publication date: February 24, 2022
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kohei SHIGYOU, Takashi HIROSE
  • Patent number: 11231026
    Abstract: A valve device includes valve elements each having a valve seat, a valve seat support, and a diaphragm provided so as to be able to abut on and separate from the seat surface of the valve seat, the diaphragm making the flow passage of the valve seat and the corresponding secondary flow path communicate through the gap between the diaphragm and the valve seat, and the valve seat support has seal surfaces that cooperate with a part of the inner wall surface of the corresponding accommodation recess to shut off the communication between the corresponding primary flow path and the secondary flow path, and a detour passage that connects the primary flow path and the flow passage of the valve seat, and the valve body defines a communication passage that makes the secondary flow paths communicates with each other.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: January 25, 2022
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kazunari Watanabe, Kohei Shigyou, Kenji Aikawa, Tomohiro Nakata, Takahiro Matsuda, Tsutomu Shinohara
  • Patent number: 11162597
    Abstract: A flow path assembly incorporating functional components, such as orifices and filters, is provided in which gaps between the functional components and the flow path components defining the flow path are sealed for an extended period of time. An annular elastic member interposed between the flow path members is provided outside the opposing surfaces of the flow path members, the flow path member has a caulking portion, the caulking portion integrates the flow path members and the plate-like member, exerts a force on the flow path member such that one of the opposing surfaces faces the other of the opposing surfaces, seals the gaps between the orifice plate and the opposing surfaces, and the elastic member is crushed between the flow path members to seal the gap between the flow path members.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: November 2, 2021
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kazunari Watanabe, Kohei Shigyou, Kenji Aikawa, Tomohiro Nakata, Takahiro Matsuda, Tsutomu Shinohara
  • Publication number: 20210199205
    Abstract: The present invention provides a miniaturized valve device capable of dramatically increasing the degree of freedom in arranging a flow path of a valve body while securing a necessary flow rate. The valve device includes a valve seat support provided in an accommodation recess and having a support surface with which a sealing surface of a valve seat abuts and supports a pressing force from the sealing surface; a diaphragm provided in the accommodation recess so as to abut and be separable from a seating surface of the valve seat and seals the opening side of the accommodation recess; the valve seat support having sealing surfaces which cooperates with a part of the inner wall surface of the accommodation recess to bock the communication between a primary flow path and a secondary flow path, and a detour passage that connects the primary flow path and a flow passage of the valve seat.
    Type: Application
    Filed: October 22, 2018
    Publication date: July 1, 2021
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kazunari WATANABE, Kohei SHIGYOU, Kenji AIKAWA, Tomohiro NAKATA, Takahiro MATSUDA, Tsutomu SHINOHARA
  • Publication number: 20200370664
    Abstract: Provided is a valve device in which influence of a physical impact on a valve element is further reduced. Valve device includes a valve seat disposed around an opening connected to a flow path formed in a valve body, a diaphragm for opening and closing flow path by moving between a contact position and a non-contact position with respect to the valve seat, a presser adapter that contacts a peripheral portion of the diaphragm, a casing that incorporates an actuator for actuating the diaphragm and is fixed on the valve body by being screwed into a screw hole formed in the valve body, and an adapter fixing ring that is screwed into the screw hole and thereby fixed in the valve body while pressing the presser adapter and the diaphragm.
    Type: Application
    Filed: February 19, 2019
    Publication date: November 26, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kazunari WATANABE, Kohei SHIGYOU, Yohei SAWADA, Tomohiro NAKATA, Tsutomu SHINOHARA
  • Publication number: 20200354835
    Abstract: A valve device with a built-in orifice is manufacturable with low-cost. The valve body defines an accommodation recess which opens at the surface of the valve body and contains a valve element therein, a primary flow path and a secondary flow path connected to the accommodation recess, the valve element having a sealing portion for blocking direct communication between the primary flow path and the secondary flow path through the accommodation recess, and a through flow passage for making the primary flow path and the secondary flow path communicate through the valve element, wherein an orifice is formed in the through flow passage.
    Type: Application
    Filed: November 12, 2018
    Publication date: November 12, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kazunari WATANABE, Kohei SHIGYOU, Kenji AIKAWA, Tomohiro NAKATA, Takahiro MATSUDA, Tsutomu SHINOHARA
  • Publication number: 20200340591
    Abstract: A flow path assembly incorporating functional components, such as orifices and filters, is provided in which gaps between the functional components and the flow path components defining the flow path are sealed for an extended period of time. An annular elastic member interposed between the flow path members is provided outside the opposing surfaces of the flow path members, the flow path member has a caulking portion, the caulking portion integrates the flow path members and the plate-like member, exerts a force on the flow path member such that one of the opposing surfaces faces the other of the opposing surfaces, seals the gaps between the orifice plate and the opposing surfaces, and the elastic member is crushed between the flow path members to seal the gap between the flow path members.
    Type: Application
    Filed: October 24, 2018
    Publication date: October 29, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kazunari WATANABE, Kohei SHIGYOU, Kenji AIKAWA, Tomohiro NAKATA, Takahiro MATSUDA, Tsutomu SHINOHARA
  • Publication number: 20200325887
    Abstract: A valve device includes valve elements each having a valve seat, a valve seat support, and a diaphragm provided so as to be able to abut on and separate from the seat surface of the valve seat, the diaphragm making the flow passage of the valve seat and the corresponding secondary flow path communicate through the gap between the diaphragm and the valve seat, and the valve seat support has seal surfaces that cooperate with a part of the inner wall surface of the corresponding accommodation recess to shut off the communication between the corresponding primary flow path and the secondary flow path, and a detour passage that connects the primary flow path and the flow passage of the valve seat, and the valve body defines a communication passage that makes the secondary flow paths communicates with each other.
    Type: Application
    Filed: October 22, 2018
    Publication date: October 15, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kazunari WATANABE, Kohei SHIGYOU, Kenji AIKAWA, Tomohiro NAKATA, Takahiro MATSUDA, Tsutomu SHINOHARA
  • Publication number: 20200278049
    Abstract: A valve device can be compact, low cost and has a bleed function. A valve body defines an accommodation recess which opens at a surface of the valve body and contains a valve element therein, a primary flow path and a secondary flow path connected to the accommodation recess, the valve element having a sealing portion for blocking direct communication between the primary flow path and the secondary flow path through the accommodation recess, a detour passage for making the primary flow path and the secondary flow path communicate through the valve element, and a bleed hole for making the detour passage and the secondary flow path communicate through the accommodation recess.
    Type: Application
    Filed: November 13, 2018
    Publication date: September 3, 2020
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kazunari WATANABE, Kohei SHIGYOU, Kenji AIKAWA, Tomohiro NAKATA, Takahiro MATSUDA, Tsutomu SHINOHARA
  • Patent number: 10573801
    Abstract: A piezoelectric linear actuator comprising a laminated piezoelectric actuator having a cylindrical shape; a lower support member supporting the laminated piezoelectric actuator and extending laterally to the left and right of the laminated piezoelectric actuator; a pair of displacement transfer members extending along the left and right sides of the laminated piezoelectric actuator, respectively, to slidably intersect the lower support member and transferring displacement due to the piezoelectric effect of the laminated piezoelectric actuator; and an output part locked to the pair of displacement transfer members below the lower support member and coupling lower end portions of the displacement transfer members, wherein the pair of displacement transfer members are formed to have a width dimension that is the same or substantially the same as the width dimension of the laminated piezoelectric actuator.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: February 25, 2020
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kohei Shigyou, Takashi Hirose, Kouji Nishino, Ryousuke Dohi, Naofumi Yasumoto
  • Patent number: 10385998
    Abstract: Passage members each have a required width, a required height, and a required length, and are provided at middle portions in the width direction with fluid passages, respectively. As coupling means, two bolts are used. The middle portion in the width direction of each of the passage members has opposite end portions that are each provided with a female screw and a bolt insertion hole to be faced by the female screw, respectively. The upper bolt is inserted into one of the passage members and is screwed into the female screw of the other passage member. The lower bolt is inserted into the other passage member and is screwed into the female screw of the one of the passage members. The passage members are coupled with use of the two upper and lower bolts whereby a seal member is securely fixed.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 20, 2019
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kohei Shigyou, Takashi Hirose, Kouji Nishino, Ryousuke Dohi, Naofumi Yasumoto
  • Patent number: 10156295
    Abstract: A piezoelectric linear actuator includes a laminated piezoelectric actuator, a lower support member that supports the laminated piezoelectric actuator, a pressing member that biases the laminated piezoelectric actuator from the top thereof, a guide member connected to the lower support member to guide the pressing member; and a displacement transmission member which includes a pair of displacement transmission plates, an adjustment screw connected to the pair of displacement transmission plates, an output section connected to the pair of displacement transmission plates, and an elastic body that biases the output section downward.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: December 18, 2018
    Assignee: Fujikin Incorporated
    Inventors: Naofumi Yasumoto, Ryousuke Dohi, Kouji Nishino, Nobukazu Ikeda, Kohei Shigyou
  • Publication number: 20180240961
    Abstract: A piezoelectric linear actuator comprising a laminated piezoelectric actuator having a cylindrical shape; a lower support member supporting the laminated piezoelectric actuator and extending laterally to the left and right of the laminated piezoelectric actuator; a pair of displacement transfer members extending along the left and right sides of the laminated piezoelectric actuator, respectively, to slidably intersect the lower support member and transferring displacement due to the piezoelectric effect of the laminated piezoelectric actuator; and an output part locked to the pair of displacement transfer members below the lower support member and coupling lower end portions of the displacement transfer members, wherein the pair of displacement transfer members are formed to have a width dimension that is the same or substantially the same as the width dimension of the laminated piezoelectric actuator.
    Type: Application
    Filed: August 9, 2016
    Publication date: August 23, 2018
    Applicant: FUJIKIN INCORPORATED
    Inventors: Kohei SHIGYOU, Takashi HIROSE, Kouji NISHINO, Ryousuke DOHI, Naofumi YASUMOTO
  • Patent number: D879248
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: March 24, 2020
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kohei Shigyou, Takashi Hirose, Kouji Nishino, Ryousuke Dohi, Naofumi Yasumoto