Patents by Inventor Tomohiro OOTSUKA

Tomohiro OOTSUKA 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: 10746162
    Abstract: The present application discloses a compressor including a crank shaft, a first reciprocation converter, a first cylinder body, a first pressurizing portion, a second reciprocation converter, which is connected to the crank shaft with a phase different by 180 degrees from the first reciprocation converter, a second cylinder body, a second pressurizing portion, and a connecting portion configured to interconnect the compression chambers. The compression chambers are arranged so that a timing at which the gas is discharged from a specific compression chamber among the compression chambers becomes the same as a timing at which the discharged gas is suctioned into another compression chamber at a higher side by one stage than the specific compression chamber.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Takayuki Fukuda, Ryosuke Yamasaki, Tomohiro Ootsuka
  • Publication number: 20200182408
    Abstract: A hydrogen station operation method capable of adjusting pressure in a reservoir to the pressure suitable for liquid hydrogen replenishment while cutting hydrogen waste is for replenishing liquid hydrogen into the reservoir in a hydrogen station including: a gasification path partially gasifying liquid hydrogen out of the reservoir and returning it; and a gas delivery path delivering gasified hydrogen in the reservoir into a path between a vaporizer and a compressor or the vaporizer, when the remainder of liquid hydrogen in the reservoir becomes a first threshold or less, by reducing the liquid hydrogen amount flowing through the gasification path by a valve therein, reducing the gasification amount of liquid hydrogen in the reservoir, and increasing the hydrogen gas amount delivered through the gas delivery path from the reservoir by a valve therein, pressure in the reservoir is reduced, thereby performing operation where suction pressure of the compressor is reduced.
    Type: Application
    Filed: September 27, 2019
    Publication date: June 11, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenji NAGURA, Tomohiro OOTSUKA
  • Publication number: 20190234402
    Abstract: This application discloses a reciprocating compressor including: a piston rod extending along a predetermined central axis that crosses an opening formed in an end of a cylinder, the piston rod being coupled to a piston and a crank mechanism to convey driving force from the crank mechanism to the piston; a rear head penetrated by the piston rod, the rear head closing the opening of the cylinder; and a rod ring portion configured to prevent a gas in the cylinder from leaking out from a gap between the rear head and the piston rod. The piston rod includes an outer circumferential surface on which an annular groove portion surrounding the central axis of the piston rod is formed. The rod ring portion includes an inner circumferential portion inserted into the groove portion, and an outer circumferential portion in sliding contact with an inner circumferential surface of the rear head.
    Type: Application
    Filed: January 11, 2019
    Publication date: August 1, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Tomohiro OOTSUKA, Ryosuke YAMASAKI
  • Publication number: 20190154022
    Abstract: The present application discloses a compressor including a crank shaft, a first reciprocation converter, a first cylinder body, a first pressurizing portion, a second reciprocation converter, which is connected to the crank shaft with a phase different by 180 degrees from the first reciprocation converter, a second cylinder body, a second pressurizing portion, and a connecting portion configured to interconnect the compression chambers. The compression chambers are arranged so that a timing at which the gas is discharged from a specific compression chamber among the compression chambers becomes the same as a timing at which the discharged gas is suctioned into another compression chamber at a higher side by one stage than the specific compression chamber.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 23, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Kenji NAGURA, Takayuki FUKUDA, Ryosuke YAMASAKI, Tomohiro OOTSUKA
  • Publication number: 20190111378
    Abstract: It is an objective of the present invention to provide a gas separation method by which a removal performance to remove a removal object gas component and a recovery rate to recover a recovery object gas component can be satisfied at the same time, and furthermore, a generation efficiency of a product gas can be improved. A raw material gas g0 is fed to one adsorption vessel 11 of an adsorbing device 10 and a permeated gas g1 is sent out. A pressure of the other the adsorption vessels 12 is made lower than a pressure during adsorption and a desorbed gas g2 is sent out. In accordance with an operating cycle of the adsorbing device 10 or according to a condition of the raw material gas g0 or the like, one of the permeated gas g1 and the desorbed gas g2 that has a lower concentration of a priority removal object gas component than the raw material gas g0 is provided as a return gas to the adsorbing device 10, the priority removal object gas component being a gas component to be preferentially removed.
    Type: Application
    Filed: March 27, 2017
    Publication date: April 18, 2019
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Tetsuya ISHII, Yoji FUJIMORI, Kazumi OKADA, Tomohiro OOTSUKA
  • Patent number: 9991058
    Abstract: A method for producing a solar cell, including: an electrolyte-supplying step of supplying an electrolyte onto a plate-shaped first electrode at a region thereof positioned between a pair of first sealing portions respectively provided along two opposing lateral sides of the plate-shaped first electrode; an electrodes-laminating step of superposing a second electrode on the first electrode gradually from one end side toward the other end side as viewed in a direction along the lateral sides of the first electrode while bonding the second electrode to the first electrode at the first sealing portions, the second electrode including a flexible plate-shaped substrate having a hole penetrating through the substrate in a thicknesswise direction thereof and capable of discharging the electrolyte therethrough; and a sealing step of bonding the first electrode and the second electrode at a pair of second sealing portions.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: June 5, 2018
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventor: Tomohiro Ootsuka
  • Publication number: 20170213654
    Abstract: A method for producing a solar cell, including: an electrolyte-supplying step of supplying an electrolyte onto a plate-shaped first electrode at a region thereof positioned between a pair of first sealing portions respectively provided along two opposing lateral sides of the plate-shaped first electrode; an electrodes-laminating step of superposing a second electrode on the first electrode gradually from one end side toward the other end side as viewed in a direction along the lateral sides of the first electrode while bonding the second electrode to the first electrode at the first sealing portions, the second electrode including a flexible plate-shaped substrate having a hole penetrating through the substrate in a thicknesswise direction thereof and capable of discharging the electrolyte therethrough; and a sealing step of bonding the first electrode and the second electrode at a pair of second sealing portions.
    Type: Application
    Filed: July 30, 2015
    Publication date: July 27, 2017
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventor: Tomohiro OOTSUKA
  • Patent number: 9689429
    Abstract: According to a method of assembling a shell type needle roller bearing 10, after both flange portions 11b and 11c of a shell outer ring 11 are formed and a heat treatment 5 is applied to the shell outer ring 11, and either a retainer 13 or a retainer 18 and needles 12 are assembled with the shell outer ring 11, and thus a plating step in the related art is not required. In addition, the retainers 13 and 18 are not thermally affected by the heat treatment, and thus a resin material can be used as the material of the retainers 13 and 18.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 27, 2017
    Assignee: NSK LTD.
    Inventor: Tomohiro Ootsuka
  • Publication number: 20160208855
    Abstract: According to a method of assembling a shell type needle roller bearing 10, after both flange portions 11b and 11c of a shell outer ring 11 are formed and a heat treatment 5 is applied to the shell outer ring 11, and either a retainer 13 or a retainer 18 and needles 12 are assembled with the shell outer ring 11, and thus a plating step in the related art is not required. In addition, the retainers 13 and 18 are not thermally affected by the heat treatment, and thus a resin material can be used as the material of the retainers 13 and 18.
    Type: Application
    Filed: December 13, 2013
    Publication date: July 21, 2016
    Applicant: NSK LTD.
    Inventor: Tomohiro OOTSUKA