Patents by Inventor Masaaki Imafuku

Masaaki Imafuku 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: 10693258
    Abstract: The present invention relates to a high-voltage submersible motor and a waterproof connector for use in the submersible motor. The submersible motor includes a motor body (36), a power cable (37a), a cable contact (50) electrically connected to the power cable (37a), a cable-side insulating member (49) to which the cable contact (50) is liquid-tightly coupled, a motor contact (42) connected to the cable contact (50), a motor-side insulating member (41) to which the motor contact (42) is liquid-tightly coupled, and an insulating resin (93) that fills an enclosed space (60) formed between the cable-side insulating member (49) and the motor-side insulating member (41). A connecting portion of the cable contact (50) and the motor contact (42) is covered with the resin (93).
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: June 23, 2020
    Assignee: EBARA CORPORATION
    Inventors: Masaaki Imafuku, Takuro Watanabe
  • Publication number: 20190267752
    Abstract: The present invention relates to a high-voltage submersible motor and a waterproof connector for use in the submersible motor. The submersible motor includes a motor body (36), a power cable (37a), a cable contact (50) electrically connected to the power cable (37a), a cable-side insulating member (49) to which the cable contact (50) is liquid-tightly coupled, a motor contact (42) connected to the cable contact (50), a motor-side insulating member (41) to which the motor contact (42) is liquid-tightly coupled, and an insulating resin (93) that fills an enclosed space (60) formed between the cable-side insulating member (49) and the motor-side insulating member (41). A connecting portion of the cable contact (50) and the motor contact (42) is covered with the resin (93).
    Type: Application
    Filed: November 22, 2017
    Publication date: August 29, 2019
    Inventors: Masaaki IMAFUKU, Takuro WATANABE
  • Publication number: 20050212300
    Abstract: A vertical shaft windmill is provided in which: a casing (7) extends further upward than a lowest arm (5L); a radial bearing (BI) is fixed to the outer part of the casing (7); and the arm (5L) is mounted for rotation to the casing (7) through the radial bearing (BI). Unstable conditions in the overhang region can be eliminated without decreasing its wind receiving area and without interference with other members.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 29, 2005
    Inventors: Katsumi Kimura, Yoshihiko Ando, Masaaki Imafuku, Yoshiyuki Maruta, Masanori Goto, Kazuya Hirata, Kenji Ichihara, Kazuhiko Sugiyama, Kimi Sakurai, Yukio Suzuki