Patents by Inventor Mitsuyoshi ITAHARA

Mitsuyoshi ITAHARA 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: 20220170554
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Publication number: 20220170553
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Patent number: 11274750
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 15, 2022
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi Itahara, Kazuhiro Yoneshige, Hiroshi Kawazoe, Makoto Fukui, Sadatsugu Nagata
  • Publication number: 20200173562
    Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 4, 2020
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
  • Patent number: 10007277
    Abstract: A pressure regulating valve to regulate a pressure of fuel gas includes a valve seat, a valve element movable into or out of contact with the valve seat to shut off or allow a flow of fuel gas, and a piston placed facing the valve element by interposing the valve seat and being located downstream of the valve element in a flowing direction of the fuel gas. The pressure regulating valve further includes a holder placed more upstream than the valve element in the flowing direction of fuel gas. The holder includes a bottom-closed cylindrical part opening toward the upstream side, and a through hole formed through the bottom-closed cylindrical part from its inner peripheral surface to outer peripheral surface.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: June 26, 2018
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masahiro Kobayashi, Mitsuyoshi Itahara, Kazuhiro Nakamura, Hideyuki Fukuda
  • Publication number: 20170130862
    Abstract: A pressure reducing valve includes a valve seat, a valve element configured to contact with or separate from the valve seat to close or open a flow passage, a piston to move the valve element into or out of contact with the valve seat, and a spring urging the piston in a valve opening direction of the valve element. The pressure reducing valve further includes a rattling prevention part for preventing rattling which may occur between the piston and the spring due to unevenness of a polished surface of the spring.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 11, 2017
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masahiro KOBAYASHI, Mitsuyoshi ITAHARA, Hideyuki FUKUDA, Takehide NAKAMURA, Hirofumi HASHIBA, Seitaro ITO, Sumito TAKEDA, Hiroshi KAWAZOE
  • Publication number: 20170115673
    Abstract: A pressure regulating valve to regulate a pressure of fuel gas includes a valve seat, a valve element movable into or out of contact with the valve seat to shut off or allow a flow of fuel gas, and a piston placed facing the valve element by interposing the valve seat and being located downstream of the valve element in a flowing direction of the fuel gas. The pressure regulating valve further includes a holder placed more upstream than the valve element in the flowing direction of fuel gas. The holder includes a bottom-closed cylindrical part opening toward the upstream side, and a through hole formed through the bottom-closed cylindrical part from its inner peripheral surface to outer peripheral surface.
    Type: Application
    Filed: October 4, 2016
    Publication date: April 27, 2017
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Masahiro KOBAYASHI, Mitsuyoshi ITAHARA, Kazuhiro NAKAMURA, Hideyuki FUKUDA