Patents by Inventor Miwa Hidekura

Miwa Hidekura 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: 20220290675
    Abstract: The present invention relates to a pump apparatus for delivering a liquid. The pump apparatus includes a pump (1) having an impeller (5), an electric motor (7) for rotating the impeller (5), and an inverter (10) for driving the electric motor (7) at variable speed. The impeller (5) has a non-limit load characteristic in a predetermined discharge flow-rate range (R). The inverter (10) is configured to drive the electric motor (7) at a preset target operating point (TO) with a rotation speed higher than a rotation speed corresponding to a power frequency of a commercial power source.
    Type: Application
    Filed: June 10, 2020
    Publication date: September 15, 2022
    Applicant: Ebara Corporation
    Inventors: Hiroyuki KAWASAKI, Takayuki MIYAMOTO, Miwa HIDEKURA, Hoechun KIM, Satoshi YAMAZAKI, Xinshuai FAN
  • Publication number: 20210381521
    Abstract: The impeller (1) includes a main plate (3) formed from a metal plate; and vanes (5) each formed from a metal plate. Each of the vanes (5) has a three-dimensional portion (5A) having a surface inclined with respect to a rotation axis (CA) of the impeller (1) and a two-dimensional portion (5B) having a surface parallel to the rotation axis (CA) of the impeller (1), and the two-dimensional portion (5B) is fixed to the main plate (3) by a first weld (10) formed by projection welding.
    Type: Application
    Filed: November 14, 2019
    Publication date: December 9, 2021
    Applicant: Ebara Corporation
    Inventors: Miwa HIDEKURA, Ryoken YOMOGIDA
  • Patent number: 10030814
    Abstract: A coupling guard for covering a coupling which couples a drive shaft of a prime mover and a rotational shaft of a rotary machine to each other. The coupling guard includes a cylindrical guard body having an upper semicylindrical member and a lower semicylindrical member coupled to the upper semicylindrical member, and a guard leg supporting the guard body. The guard body has a flange portion to which the guard leg is attached. The guard leg includes a vertical wall parallel to a central axis of the guard body, an upper wall, a bottom wall, a left-side wall, and a right-side wall which project perpendicularly outwardly from the vertical wall. The vertical wall, the upper wall, the bottom wall, the left-side wall, and the right-side wall are made of a single plate material.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 24, 2018
    Assignee: EBARA CORPORATION
    Inventors: Wei Wei, Junya Kawabata, Shoji Ito, Miwa Hidekura
  • Publication number: 20160312954
    Abstract: There is disclosed a coupling guard that can easily be installed and removed while a drive shaft of a prime mover and a rotational shaft of a rotary machine are coupled to each other. The coupling guard includes a cylindrical guard body having an upper semicylindrical member and a lower semicylindrical member coupled to the upper semicylindrical member, and a guard leg supporting the guard body. The guard body has a flange portion to which the guard leg is attached. The guard leg includes a vertical wall parallel to a central axis of the guard body, an upper wall, a bottom wall, a left-side wall, and a right-side wall which project perpendicularly outwardly from the vertical wall. The vertical wall, the upper wall, the bottom wall, the left-side wall, and the right-side wall are made of a single plate material.
    Type: Application
    Filed: April 22, 2016
    Publication date: October 27, 2016
    Inventors: Wei Wei, Junya Kawabata, Shoji Ito, Miwa Hidekura