Patents by Inventor Isao Hagiya

Isao Hagiya 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: 11255377
    Abstract: A tilting-pad-type journal bearing includes a rotary shaft, a plurality of tilting pads, a housing, a fixing structure, an oil inlet, and side plates. The plurality of tilting pads support the rotary shaft in a radial direction. The housing accommodates the plurality of tilting pads inside. The fixing structure fixes a circumferential relative position with respect to the housing while allowing the tilting pads to swing. The oil inlet supplies lubricating oil between the tilting pads and the rotary shaft. The side plates are provided on both sides of the housing in a rotational-axis direction.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 22, 2022
    Assignee: Hitachi Industrial Products, Ltd.
    Inventors: Isao Hagiya, Naohiko Takahashi, Jun Ichimura
  • Publication number: 20210285486
    Abstract: The purpose of the present invention is to provide a tilting-pad-type journal bearing capable of improving pad cooling performance of lubricating oil and reducing pad temperature. In the tilting-pad-type journal bearing, a tilting pad has a concave part formed to be a down step part from a sliding surface toward the rotational downstream side, and a down step part from the sliding surface from the center of the tilting pad in the rotational-axis direction toward a rotational-axis direction side end, at both side ends of the sliding surface in the rotational-axis direction facing a rotary shaft. Further, in the concave part, the side end side of the tilting pad in the rotational-axis direction is opened toward the inside of a housing.
    Type: Application
    Filed: October 24, 2017
    Publication date: September 16, 2021
    Inventors: Isao HAGIYA, Naohiko TAKAHASHI, Jun ICHIMURA
  • Patent number: 10846715
    Abstract: An energy operation system, apparatus, and method capable of stably supplying energy and providing adjustment control based on prediction precision and planning precision for energy supply and demand. An energy operation apparatus includes a demand predictor, planner, evaluator, and solution quality controller. The demand predictor predicts demand and/or a power generation amount of future energy in a management area. The planner prepares a future energy supply plan in the management area based on a prediction. The evaluator evaluates supply and/or demand conditions including at least one of future weather in the management area, energy demand in the management area, a demand density and/or a generation density of future energy in the management area. The solution quality controller controls the quality of at least one of a prediction solution of the demand predictor and the energy supply plan of the planner based on an evaluation result from the evaluator.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: November 24, 2020
    Assignee: HITACHI, LTD.
    Inventors: Tohru Watanabe, Isao Hagiya, Masamichi Nakamura, Yu Ikemoto, Masato Utsumi, Masashi Fukaya, Jyunpei Ogawa, Hiroaki Ogawa, Ikuo Shigemori, Hiroshi Iimura
  • Patent number: 10797565
    Abstract: A motor with an inner fan includes a rotor rotating with a shaft, a stator opposing the outer peripheral surface of the rotor, an end ring connected to the rotor, stator wiring connected to the stator, a fan rotating with the shaft through a sleeve, a fan guide opposing the tip end of the blade outer periphery of the fan, and a frame storing the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring. The rotor includes an axial duct penetrating the rotor in the axial direction of the rotor and a radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor. The fan is an inner fan arranged inside the frame, the inner fan is of a diagonal flow type, and the discharge direction of the inner fan is the inward direction.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: October 6, 2020
    Assignee: Hitachi Industrial Products, Ltd.
    Inventors: Isao Hagiya, Misato Sato, Takayuki Koyama, Kenichi Sugimoto
  • Publication number: 20200007008
    Abstract: A motor with an inner fan includes a rotor rotating with a shaft, a stator opposing the outer peripheral surface of the rotor, an end ring connected to the rotor, stator wiring connected to the stator, a fan rotating with the shaft through a sleeve, a fan guide opposing the tip end of the blade outer periphery of the fan, and a frame storing the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring. The rotor includes an axial duct penetrating the rotor in the axial direction of the rotor and a radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor. The fan is an inner fan arranged inside the frame, the inner fan is of a diagonal flow type, and the discharge direction of the inner fan is the inward direction.
    Type: Application
    Filed: February 22, 2019
    Publication date: January 2, 2020
    Inventors: Isao HAGIYA, Misato SATO, Takayuki KOYAMA, Kenichi SUGIMOTO
  • Publication number: 20190369572
    Abstract: An energy operation system, apparatus, and method capable of stably supplying energy and providing adjustment control based on prediction precision and planning precision for energy supply and demand. An energy operation apparatus includes a demand predictor, planner, evaluator, and solution quality controller. The demand predictor predicts demand and/or a power generation amount of future energy in a management area. The planner prepares a future energy supply plan in the management area based on a prediction. The evaluator evaluates supply and/or demand conditions including at least one of future weather in the management area, energy demand in the management area, a demand density and/or a generation density of future energy in the management area. The solution quality controller controls the quality of at least one of a prediction solution of the demand predictor and the energy supply plan of the planner based on an evaluation result from the evaluator.
    Type: Application
    Filed: March 11, 2019
    Publication date: December 5, 2019
    Applicant: HITACHI, LTD.
    Inventors: Tohru WATANABE, Isao HAGIYA, Masamichi NAKAMURA, Yu IKEMOTO, Masato UTSUMI, Masashi FUKAYA, Jyunpei OGAWA, Hiroaki OGAWA, Ikuo SHIGEMORI, Hiroshi IIMURA
  • Publication number: 20110073603
    Abstract: The storage case has a structure in which a sample storage case (S) contained in a storage case is cooled and held at a low temperature by a Stirling refrigerator. A detection element is disposed in a room-temperature area of the storage case. The chemical or physical property of the detection element varies when a contaminant adheres to the detection element. Entrance of a contaminant into the storage case can be checked by contactlessly checking the detection element from the outside of the storage case. The storage case includes a server for receiving the result of the check from the detection device, storing the result, and setting up connection via a communication line to at least two out of a terminal operable by the forwarder, a terminal operable by the carrier, and a terminal operable by the recipient to transmit the result to the two.
    Type: Application
    Filed: April 20, 2009
    Publication date: March 31, 2011
    Applicant: HITACHI, LTD.
    Inventors: Norihide Saho, Mami Hakari, Hiroyuki Tanaka, Sachi Tanaka, Yoshihito Yasukawa, Akira Nomiyama, Shinjiro Saito, Azusa Amino, Daisuke Matsuka, Kohtaro Chiba, Hiroyuki Toyoda, Naoko Nakayama, Isao Kitagawa, Isao Hagiya