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).

  • 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
  • Publication number: 20180112805
    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: Application
    Filed: August 10, 2016
    Publication date: April 26, 2018
    Inventors: Kohei Shigyou, Takashi Hirose, Kouji Nishino, Ryousuke Dohi, Naofumi Yasumoto
  • Patent number: 9625047
    Abstract: A flow control valve for a flow controller includes a valve main body provided with an open-top valve chamber hole, a metal diaphragm valve element, a lower support cylinder having notches facing each other, an upper support cylinder attached to the lower support cylinder, a support frame horizontally disposed through the notches of the lower support cylinder, a disc spring placed between the support frame and a bottom of the lower support cylinder, a lower cradle placed on the support frame, a piezoelectric element inserted into the support cylinder above the lower cradle, a guide fixed to the valve main body together with the support frame with the support cylinder being inserted through the guide cylinder in a vertically movable manner. The support cylinder is pressed upward by the extension of the piezoelectric element, whereby the metal diaphragm valve element is separated from the valve seat by the elastic force.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: April 18, 2017
    Assignee: FUJIKIN INCORPORATED
    Inventors: Takashi Hirose, Michio Yamaji, Toshihide Yoshida, Kohei Shigyou
  • Publication number: 20160363231
    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: Application
    Filed: February 10, 2015
    Publication date: December 15, 2016
    Applicant: Fujikin Incorporated
    Inventors: Naofumi Yasumoto, Ryousuke Dohi, Kouji Nishino, Nobukazu Ikeda, Kohei Shigyou
  • Publication number: 20160047483
    Abstract: A flow control valve for a flow controller includes a valve main body provided with an open-top valve chamber hole, a metal diaphragm valve element, a lower support cylinder having notches facing each other, an upper support cylinder attached to the lower support cylinder, a support frame horizontally disposed through the notches of the lower support cylinder, a disc spring placed between the support frame and a bottom of the lower support cylinder, a lower cradle placed on the support frame, a piezoelectric element inserted into the support cylinder above the lower cradle, a guide fixed to the valve main body together with the support frame with the support cylinder being inserted through the guide cylinder in a vertically movable manner. The support cylinder is pressed upward by the extension of the piezoelectric element, whereby the metal diaphragm valve element is separated from the valve seat by the elastic force.
    Type: Application
    Filed: March 17, 2014
    Publication date: February 18, 2016
    Applicant: Fujikin Incorporated
    Inventors: Takashi HIROSE, Michio YAMAJI, Toshihide YOSHIDA, Kohei SHIGYOU
  • Patent number: 9163748
    Abstract: This invention provides a fluid control device capable of making compact a fluid control device in which a valve and a limit switch are combined. A valve 6 includes a piston 26 as a moving member which includes a protruding portion protruding from an opening of a casing 21, and which linearly moves according to opening and closing of the valve 6 so as to abut against a limit switch 7. The limit switch 7 is made to face the piston 26 and is attached via a limit switch positioning unit 8 so as to be adjustable about its position. The limit switch positioning unit 8 includes a first bolt 42 fixed to a body 2, a second bolt 43 fixed to the limit switch 7, and a connection screw 44 which connects both the bolts 42, 43. The first bolt 42 and the second bolt 43 have different pitches from each other.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: October 20, 2015
    Assignee: FUJIKIN INCORPORATED
    Inventors: Takashi Hirose, Hiroshi Ogawa, Toshihide Yoshida, Kohei Shigyou
  • Patent number: 9127796
    Abstract: A gasket type orifice includes a first orifice base having a through-type passage in a central area thereof, a second orifice base having in a central area thereof a through-type passage communicating with the passage of the first orifice base, and an orifice plate having an orifice hole formed in a central area thereof, wherein the orifice plate is mounted by insertion in an airtight manner between both orifice bases, and the gasket type orifice is installed in a fluid passage, in which the outer end faces of both orifice bases respectively serve as sealing faces, and an outer diameter of the second orifice base, located on the downstream side, is larger than an outer diameter of the first orifice base located on the upstream side, and an outer peripheral edge portion of an inner end face of the second orifice base serves as another sealing face.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 8, 2015
    Assignee: FUJIKIN INCORPORATED
    Inventors: Takashi Hirose, Tsutomu Shinohara, Toshihide Yoshida, Kohei Shigyou, Michio Yamaji
  • Patent number: 9115813
    Abstract: This invention provides a fluid control device which is capable of visually recognizing its opening and closing states with a simple configuration. The casing 3 is formed so as to be opened upward. The piston 8 is disposed at an upper end portion of a valve rod 7 such that a piston upper end portion is exposed from an opening of the casing 3 when the valve rod 7 is located at the upper position.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: August 25, 2015
    Assignee: FUJIKIN INCORPORATED
    Inventors: Takashi Hirose, Hiroshi Ogawa, Toshihide Yoshida, Kohei Shigyou
  • Patent number: D820394
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: June 12, 2018
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kohei Shigyou, Takashi Hirose, Kouji Nishino, Ryousuke Dohi, Naofumi Yasumoto
  • Patent number: D820395
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: June 12, 2018
    Assignee: 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