Patents by Inventor Shuichi Isayama

Shuichi Isayama 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: 10161265
    Abstract: A bearing device for a turbocharger according to one embodiment of the present invention includes: a rotational shaft; a journal bearing device including a compressor-side journal bearing and a turbine-side journal bearing; a bearing housing including a compressor-side bearing supporting portion, a turbine-side bearing supporting portion, and a bearing housing main body; and a lubricant oil guide member extending along a circumference direction of the rotational shaft, at an outer circumference side of at least one of the compressor-side bearing supporting portion and the turbine-side bearing supporting portion.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: December 25, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Shuichi Isayama, Takashi Nambu, Takaya Futae, Yuya Kojima
  • Publication number: 20180186050
    Abstract: Upper and lower temperature control plates of upper and temperature control plate members are attacked so as to interpose a manifold body of a manifold therebetween. Upper and lower oil flow circuits provided in the respective upper and lower temperature control plates control the temperature of the manifold body heated by a plurality of coil heaters to a temperature suitable for preventing carbonization of a molten resin flowing in a flow-dividing type flow path of the manifold body.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 5, 2018
    Applicant: SHOKI CO., LTD.
    Inventor: Shuichi ISAYAMA
  • Publication number: 20180003105
    Abstract: A turbocharger according to an embodiment of the present invention includes a rotating shaft, a compressor, a turbine, a compressor-side floating bearing and a turbine-side floating bearing that rotatably support the rotating shaft, and a bearing housing that houses the compressor-side floating bearing and the turbine-side floating bearing, the bearing housing being internally provided with a turbine-side oil feeding passage through which oil to be fed to the turbine-side floating bearing flows and a compressor-side oil feeding passage through which oil to be fed to the compressor-side floating bearing flows. A ratio of an oil feeding pressure for oil at an outlet of the compressor-side oil feeding passage to an oil feeding pressure for oil at an outlet of the turbine-side oil feeding passage is configured to be higher than 1.0 and lower than 1.5.
    Type: Application
    Filed: September 14, 2015
    Publication date: January 4, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yuya KOJIMA, Takashi NAMBU, Naomichi SHIBATA, Takaya FUTAE, Shuichi ISAYAMA
  • Publication number: 20180003081
    Abstract: A bearing device for a turbocharger according to one embodiment of the present invention includes: a rotational shaft; a journal bearing device including a compressor-side journal bearing and a turbine-side journal bearing; a bearing housing including a compressor-side bearing supporting portion, a turbine-side bearing supporting portion, and a bearing housing main body; and a lubricant oil guide member extending along a circumference direction of the rotational shaft, at an outer circumference side of at least one of the compressor-side bearing supporting portion and the turbine-side bearing supporting portion.
    Type: Application
    Filed: September 10, 2015
    Publication date: January 4, 2018
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Shuichi ISAYAMA, Takashi NAMBU, Takaya FUTAE, Yuya KOJIMA
  • Patent number: 8790213
    Abstract: A planetary gear unit including a ring gear, a sun gear provided on an inner circumferential side of the ring gear, at least one planetary gear arranged between the ring gear and the sun gear to mesh with the ring gear and the sun gear, a planetary pin fixed to a carrier and inserted in a shaft hole of the planetary gear, and a slide bearing arranged between the planetary gear and the planetary pin, wherein the slide bearing is formed of a resin material and is provided on an outer periphery of the planetary pin at least in a region where the planetary pin slides relative to the planetary gear.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: July 29, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Shuichi Isayama, Hideaki Nishida
  • Patent number: 8425360
    Abstract: A planetary bearing structure which does not require forcible oil supply of planetary bearing using slide bearing, and which can reliably supply oil to a sliding surface and lubricate the sliding surface with a simple structure.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 23, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hideaki Nishida, Shuichi Isayama
  • Patent number: 8298108
    Abstract: In a planetary bearing structure equipped with a slide bearing mounted to a shaft hole of a planetary gear, the planetary gear rotating about the outer periphery of a planetary pin fixed to a carrier via the slide bearing, one or a plurality of oil supply grooves are formed in the outer peripheral surface of the planetary pin so as to extend in the axial direction. An oil supply port of a lubricant oil channel opens in the oil supply groove so as to forcedly supply lubricant oil. Furthermore, a discharge groove for trapping foreign matter, which is shallower than the oil supply groove, communicates from the oil supply groove to the wake flow side in the rotating direction of the planetary gear.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: October 30, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hideaki Nishida, Shuichi Isayama
  • Publication number: 20120177311
    Abstract: Provided is a planet bearing structure for a wind turbine generator, capable of reducing the risk of causing seizure or wear in a planet bearing of the wind turbine generator in which a slide bearing is used in a bearing portion, by improving and stabilizing formation of an oil film on a sliding surface having division surfaces. In a planet bearing structure that includes a slide bearing (50A) attached on the inner circumferential surface of a shaft hole of a planet gear constituting a gearbox, and in which the slide bearing (50A) rotates about a planet pin that is secured to a carrier, together with the planet gear, the sliding surface of the slide bearing (50A) has one or more division lines (La) that are formed by axis-wise joint surfaces and that intersect with the rotational direction, and the division lines (La) are formed in an inclined state with respect to the axial direction.
    Type: Application
    Filed: August 26, 2010
    Publication date: July 12, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Shuichi Isayama, Hideaki Nishida
  • Publication number: 20110172048
    Abstract: A planetary bearing structure which does not require forcible oil supply of planetary bearing using slide bearing, and which can reliably supply oil to a sliding surface and lubricate the sliding surface with a simple structure.
    Type: Application
    Filed: August 20, 2010
    Publication date: July 14, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideaki Nishida, Shuichi Isayama
  • Publication number: 20110092330
    Abstract: In a planetary bearing structure equipped with a slide bearing mounted to a shaft hole of a planetary gear, the planetary gear rotating about the outer periphery of a planetary pin fixed to a carrier via the slide bearing, one or a plurality of oil supply grooves are formed in the outer peripheral surface of the planetary pin so as to extend in the axial direction. An oil supply port of a lubricant oil channel opens in the oil supply groove so as to forcedly supply lubricant oil. Furthermore, a discharge groove for trapping foreign matter, which is shallower than the oil supply groove, communicates from the oil supply groove to the wake flow side in the rotating direction of the planetary gear.
    Type: Application
    Filed: October 15, 2010
    Publication date: April 21, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideaki NISHIDA, Shuichi ISAYAMA