Patents by Inventor Nobukazu Fujii

Nobukazu Fujii 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: 10711705
    Abstract: There is provided a method including: performing an upgrade of reducing a supply amount of cooling air supplied to a turbine and replacing at least some of components provided in the turbine with components adapted to the supply amount of cooling air; and changing a set value calculation function according to the post-upgrade supply amount of cooling air and the replaced components.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 14, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD
    Inventors: Nobukazu Ishii, Keita Fujii, Atsushi Kakiuchi
  • Patent number: 10654104
    Abstract: A sintered bearing comprises: a bearing sleeve that is formed of a sintered material and has a shaft hole; an annular ring-shaped seal member that is disposed such that one surface thereof comes into contact with the bearing sleeve; and a washer member that comes into contact with the other surface of the seal member on a side opposite to the one surface and is configured for the seal member to engage with the bearing sleeve. The washer member is fixed to the bearing sleeve.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: May 19, 2020
    Assignees: Diamet Corporation, MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Tsuneo Maruyama, Yoshinari Ishii, Nobukazu Fujii, Takayuki Suenaga
  • Patent number: 10612783
    Abstract: A combustor replacement method and a gas turbine plant capable of efficiently replacing a combustor using an existing facility. The combustor replacement method includes a step of separating, from a plurality of fuel supply systems, a first combustor that includes a plurality of nozzle systems connected to any of the plurality of fuel supply systems and supplied with fuel from the connected fuel supply systems, and removing the first combustor from a gas turbine plant. The method includes a step of attaching a second combustor that includes fewer nozzle systems than the first combustor to the gas turbine plant, and a step of providing communication between the fuel supply systems connected to the same nozzle system of the second combustor by a coupling pipe, and coupling the fuel supply systems and the second combustor.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: April 7, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Keita Fujii, Shin Akazawa, Nobukazu Ishii, Masahiro Matsubara, Masayuki Murakami, Fuminori Fujii, Hiroshi Tanabe, Masaru Takamatsu
  • Publication number: 20190366440
    Abstract: A sintered bearing comprises: a bearing sleeve that is formed of a sintered material and has a shaft hole; an annular ring-shaped seal member that is disposed such that one surface thereof comes into contact with the bearing sleeve; and a washer member that comes into contact with the other surface of the seal member on a side opposite to the one surface and is configured for the seal member to engage with the bearing sleeve. The washer member is fixed to the bearing sleeve.
    Type: Application
    Filed: November 16, 2017
    Publication date: December 5, 2019
    Applicants: Diamet Corporation, MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Tsuneo MARUYAMA, Yoshinari ISHII, Nobukazu FUJII, Takayuki SUENAGA
  • Patent number: 9993997
    Abstract: The present invention provides a laminate having a high fluorohydrocarbon resistance even when used at a high temperature and suitable for use as a sealing member such as oil sealing, gasket and the like. In a laminate including a metal member, and an adhesive and a hydrogenated nitrile rubber formed article laminated on the metal member, the adhesive is formed from a cured product of a composition containing a resin containing not less than 90 mass % of a novolac type phenol resin having a gelling time, as measured by Japanese Industrial standard (JIS) K 6910:2007 “gelling time C method”, of 50 sec-150 sec at 150° C., and a curing agent.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: June 12, 2018
    Assignee: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Taishiro Sasaki, Masanori Fujii, Hironori Oida, Nobukazu Fujii
  • Patent number: 9845881
    Abstract: A shaft seal in which a seal element a seal element and a gasket as held members are held between an outer case and an inner case, and, a protruding portion to locally increase holding pressure on the seal element is disposed on a pressing face for held member of the inner case.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: December 19, 2017
    Assignee: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventor: Nobukazu Fujii
  • Patent number: 9506567
    Abstract: A thickness dimension of a peripheral edge of a seal element held by an inner brim wall portion of an outer case and an inner brim wall portion of an inner case is set to be larger than a thickness dimension of a remaining portion of the seal element, and a ring concave groove is formed on the peripheral edge of the seal element.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: November 29, 2016
    Assignee: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventor: Nobukazu Fujii
  • Publication number: 20160001523
    Abstract: The present invention provides a laminate having a high fluorohydrocarbon resistance even when used at a high temperature and suitable for use as a sealing member such as oil sealing, gasket and the like. In a laminate including a metal member, and an adhesive and a hydrogenated nitrile rubber formed article laminated on the metal member, the adhesive is formed from a cured product of a composition containing a resin containing not less than 90 mass % of a novolac type phenol resin having a gelling time, as measured by Japanese Industrial standard (JIS) K 6910:2007 “gelling time C method”, of 50 sec-150 sec at 150° C., and a curing agent.
    Type: Application
    Filed: February 26, 2014
    Publication date: January 7, 2016
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Taishiro SASAKI, Masanori FUJII, Hironori OIDA, Nobukazu FUJII
  • Publication number: 20150337963
    Abstract: A shaft seal in which a seal element a seal element and a gasket as held members are held between an outer case and an inner case, and, a protruding portion to locally increase holding pressure on the seal element is disposed on a pressing face for held member of the inner case.
    Type: Application
    Filed: May 18, 2015
    Publication date: November 26, 2015
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventor: Nobukazu FUJII
  • Publication number: 20150267817
    Abstract: A thickness dimension of a peripheral edge of a seal element held by an inner brim wall portion of an outer case and an inner brim wall portion of an inner case is set to be larger than a thickness dimension of a remaining portion of the seal element, and a ring concave groove is formed on the peripheral edge of the seal element.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 24, 2015
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventor: Nobukazu FUJII
  • Patent number: 9074688
    Abstract: In a rotary shaft seal configured such that first and second seal elements (1) and (2) each having a fundamental thickness (T) and each curved through a curved wall portions (5) of a corresponding one of the first and second seal elements (1) and (2) to have a generally J-shaped cross section are arranged so as to be curved in opposite directions along a shaft center (L), a wide circumferential groove (7) is formed in each of opposed surfaces (6) of the respective curved wall portions (5) of the first and second seal elements (1) and (2). Under use conditions (where the seal is inserted), extreme end portions (8) of the first and second seal elements (1) and (2) are in contact with an outer circumferential surface (9a) of a rotary shaft (9) with a peak contact pressure such that a contact width (E) is equal to or less than twice the fundamental thickness (T).
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: July 7, 2015
    Assignee: Mitsubishi Cable Industries, Ltd.
    Inventors: Nobukazu Fujii, Hironori Oida
  • Publication number: 20130015624
    Abstract: In a rotary shaft seal configured such that first and second seal elements (1) and (2) each having a fundamental thickness (T) and each curved through a curved wall portions (5) of a corresponding one of the first and second seal elements (1) and (2) to have a generally J-shaped cross section are arranged so as to be curved in opposite directions along a shaft center (L), a wide circumferential groove (7) is formed in each of opposed surfaces (6) of the respective curved wall portions (5) of the first and second seal elements (1) and (2). Under use conditions (where the seal is inserted), extreme end portions (8) of the first and second seal elements (1) and (2) are in contact with an outer circumferential surface (9a) of a rotary shaft (9) with a peak contact pressure such that a contact width (E) is equal to or less than twice the fundamental thickness (T).
    Type: Application
    Filed: December 24, 2010
    Publication date: January 17, 2013
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Nobukazu Fujii, Hironori Oida
  • Patent number: D733263
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: June 30, 2015
    Assignee: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Nobukazu Fujii, Hironori Oida