Patents by Inventor Nariaki SEIKE

Nariaki SEIKE 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: 20200408142
    Abstract: A variable nozzle device includes: a first plate-shaped member having a first plate portion having an annular shape and being fixed to a bearing housing; a second plate-shaped member having a second plate portion which has an annular shape and which defines a nozzle flow passage between the first plate portion and the second plate portion, the second plate portion having a surface disposed so as to face the first plate portion and another surface disposed so as to face at least partially a scroll flow passage formed inside a turbine housing; at least one nozzle support having, with respect to an axial direction of the nozzle support, an end coupled to the first plate portion and another end coupled to the second plate portion; at least one nozzle vane rotatably supported between the first plate portion and the second plate portion; and a variable nozzle mechanism configured to change a vane angle of the at least one nozzle vane.
    Type: Application
    Filed: March 16, 2017
    Publication date: December 31, 2020
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo SAKAMOTO, Shigeyoshi SAKUMA, Eigo KATOU, Yosuke DAMMOTO, Yoji AKIYAMA, Nariaki SEIKE, Hiroyuki ARIMIZU
  • Publication number: 20200232383
    Abstract: A variable geometry turbocharger (100) includes a bearing housing (10) including a bearing-housing side support portion (40) configured to support a radially outer portion (38) of a nozzle mount (16) from a side opposite to a scroll flow passage (4) in an axial direction of a turbine rotor (2), and wherein at least one of the following condition (a) or (b) is satisfied: (a) the bearing-housing side support portion (40) includes at least one bearing-housing side recess portion (46) formed so as to be recessed in the axial direction so as not to be in contact with the radially outer portion (38); (b) the radially outer portion (38) of the nozzle mount (16) includes at least one nozzle-mount side recess portion (62) formed so as to be recessed in the axial direction so as not to be in contact with the bearing-housing side support portion (40).
    Type: Application
    Filed: March 28, 2016
    Publication date: July 23, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo SAKAMOTO, Yosuke DAMMOTO, Eigo KATOU, Yoji AKIYAMA, Nariaki SEIKE, Toyotaka YOSHIDA, Takeru CHIBA
  • Patent number: 10578116
    Abstract: A rotational body 1 includes a rotational shaft 2, an impeller 3, and a nut 6. The impeller includes a hub portion 4 having a peripheral surface 4s inclined to the axial direction of the rotational shaft and having an insert hole 4h in which the rotational shaft is inserted, and a blade portion 5. At least one of the rotational shaft or the insert hole of the hub portion has an interference fit portion 10 for fit between the rotational shaft and the impeller, where the outside diameter of the rotational shaft is larger than the inside diameter of the insert hole of the hub portion. The interference fit portion is formed in a region which does not include the largest outside diameter portion 4B where the hub portion has a largest outside diameter, with the rotational shaft and the impeller mating with each other.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: March 3, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Noriyuki Hayashi, Makoto Ozaki, Nariaki Seike, Hiroshi Kanki, Hiroshi Suzuki
  • Publication number: 20200056505
    Abstract: A turbocharger includes a shaft, a bearing housing, a turbine housing, and a uniting member. The bearing housing includes a first connection section protruded in a radial direction of the shaft, the first connection section having a first face extended in the radial direction, the turbine housing includes a second connection section protruded in the radial direction of the shaft, the second connection section having a second face extended in the radial direction and being faced to the first face, the uniting member interposes the first connection section and the second connection section by being fitted to the first connection section and the second connection section from the outside, and the first face and/or the second face include a ring-shaped concave portion on an inner side in the radial direction of the shaft with a sealing member arranged at the ring-shaped concave portion.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 20, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Keigo SAKAMOTO, Nariaki SEIKE, Sosuke IRIE
  • Patent number: 10520386
    Abstract: This vibration measurement device is configured to measure the balancing vibration of the cartridge, a kind of rotating machines, who has a rotor and a cartridge body to support the rotor rotatably for variable operating speed, and is provided with a rigidly fixed support structure, acceleration sensors which detect the vibration of the cartridge, and a flat spring which elastically supports the cartridge with respect to the support structure and has a variable spring constant of elastic support.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tomoaki Inoue, Katsuya Yamashita, Rimpei Kawashita, Hiroshi Nakagawa, Nariaki Seike, Noriyuki Hayashi, Hideo Mori
  • Patent number: 10465713
    Abstract: An object is to provide a rotary fluid element and a method of correcting unbalance of a rotary fluid element, whereby unbalance of the rotary fluid element can be corrected multiple times in a necessary and sufficient amount without sacrificing strength of blades. A rotary fluid element includes: a plurality of blades extending in a centrifugal direction on an outer peripheral surface of a boss portion and disposed at intervals in a circumferential direction; and a cut-remove portion for reducing unbalance disposed in a blade gap between the blades adjacent in the circumferential direction. The cut-remove portion includes a first cut-remove portion which is cut and removed on a radially-outer rim portion between the blades, and an additional cut-remove portion which is cut and removed on a radially-inner portion disposed inside the first cut-remove portion with respect to a radial direction.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Nariaki Seike, Hideo Mori, Hiroshi Nakagawa
  • Patent number: 10077679
    Abstract: Provided is a turbine housing that comprises: a scroll unit; a flat annular cover (6) that is disposed in a state where one end face abuts a flanged portion (20a) of the scroll unit and that is welded to the flanged portion (20a); an annular seal portion (4) that extends from a basal end (4a) welded to the inner circumferential side of the other end face of the annular cover (6) to the distal end (4b) disposed further to the exterior than the basal end (4a) in the radial direction and that comprises a member that can be elastically deformed; and a plurality of threaded bushings (16) that are each welded in a plurality of locations on the outer circumferential side of the other end face of the annular cover (6) and that have fastening holes (16a) for fastening bolts (40) inserted along the direction of the axis of rotation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: September 18, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Daigo Watanabe, Nariaki Seike
  • Publication number: 20180230851
    Abstract: A variable nozzle mechanism for a variable capacity turbocharger includes: a first plate having an annular shape; a second plate facing the first plate and having an annular shape, the second plate and the first plate defining an exhaust gas path in between; a plurality of nozzle vanes rotatably supported between the first plate and the second plate; and an annular member inserted on an inner circumference side of the first plate. The first plate includes a front surface facing the exhaust gas path and a back surface on an opposite side to the front surface, the annular member includes a front surface facing the exhaust gas path and a back surface on an opposite side to the front surface, and a gap is provided between the first plate and the annular member, the gap extending along a thickness direction of the first plate, from a point between an inner circumference edge of the front surface of the first plate and an outer circumference edge of the front surface of the annular member.
    Type: Application
    Filed: November 21, 2014
    Publication date: August 16, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Eigo KATOU, Keigo SAKAMOTO, Noriyuki HAYASHI, Hiroyuki ARIMIZU, Nariaki SEIKE
  • Publication number: 20170138811
    Abstract: This vibration measurement device is configured to measure the balancing vibration of the cartridge, a kind of rotating machines, who has a rotor and a cartridge body to support the rotor rotatably for variable operating speed, and is provided with a rigidly fixed support structure, acceleration sensors which detect the vibration of the cartridge, and a flat spring which elastically supports the cartridge with respect to the support structure and has a variable spring constant of elastic support.
    Type: Application
    Filed: June 27, 2014
    Publication date: May 18, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tomoaki INOUE, Katsuya YAMASHITA, Rimpei KAWASHITA, Hiroshi NAKAGAWA, Nariaki SEIKE, Noriyuki HAYASHI, Hideo MORI
  • Publication number: 20160363134
    Abstract: An object is to provide a rotary fluid element and a method of correcting unbalance of a rotary fluid element, whereby unbalance of the rotary fluid element can be corrected multiple times in a necessary and sufficient amount without sacrificing strength of blades. A rotary fluid element includes: a plurality of blades extending in a centrifugal direction on an outer peripheral surface of a boss portion and disposed at intervals in a circumferential direction; and a cut-remove portion for reducing unbalance disposed in a blade gap between the blades adjacent in the circumferential direction. The cut-remove portion includes a first cut-remove portion which is cut and removed on a radially-outer rim portion between the blades, and an additional cut-remove portion which is cut and removed on a radially-inner portion disposed inside the first cut-remove portion with respect to a radial direction.
    Type: Application
    Filed: March 5, 2014
    Publication date: December 15, 2016
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Nariaki SEIKE, Hideo MORI, Hiroshi NAKAGAWA
  • Publication number: 20160273545
    Abstract: An object is to provide a rotational body in which a gap is not formed between a rotational shaft and an impeller even during rotation at high speed in the interference fit portion between the rotational shaft and the impeller, and in which misalignment between the center positions of the rotational shaft and the impeller does not arise, and a manufacturing method thereof. A rotational body 1 includes a rotational shaft 2, an impeller 3, and a nut 6. The impeller includes a hub portion 4 having a peripheral surface 4s inclined to the axial direction of the rotational shaft and having an insert hole 4h in which the rotational shaft is inserted, and a blade portion 5. At least one of the rotational shaft or the insert hole of the hub portion has an interference fit portion 10 for fit between the rotational shaft and the impeller, where the outside diameter of the rotational shaft is larger than the inside diameter of the insert hole of the hub portion.
    Type: Application
    Filed: December 11, 2013
    Publication date: September 22, 2016
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Noriyuki HAYASHI, Makoto OZAKI, Nariaki SEIKE, Hiroshi KANKI, Hiroshi SUZUKI
  • Publication number: 20160258325
    Abstract: Provided is a turbine housing that comprises: a scroll unit; a flat annular cover (6) that is disposed in a state where one end face abuts a flanged portion (20a) of the scroll unit and that is welded to the flanged portion (20a); an annular seal portion (4) that extends from a basal end (4a) welded to the inner circumferential side of the other end face of the annular cover (6) to the distal end (4b) disposed further to the exterior than the basal end (4a) in the radial direction and that comprises a member that can be elastically deformed; and a plurality of threaded bushings (16) that are each welded in a plurality of locations on the outer circumferential side of the other end face of the annular cover (6) and that have fastening holes (16a) for fastening bolts (40) inserted along the direction of the axis of rotation.
    Type: Application
    Filed: December 27, 2013
    Publication date: September 8, 2016
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Daigo WATANABE, Nariaki SEIKE