Patents by Inventor Daimon Abe

Daimon Abe 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).

  • Single-shaft multistage pump
    Patent number: 7198457
    Abstract: A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device adapted to apply, to the rotary shaft, a balance thrust force opposing an impeller thrust force. A water-lubricated bearing is used as each of the radial bearings, and the rotary shaft is supported by the water-lubricated bearings with a balance member of the balance device interposed therebetween.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: April 3, 2007
    Assignee: Hitachi Industries Co., Ltd.
    Inventors: Yoshimasa Chiba, Choichi Ishikawa, Hiroyuki Katsura, Daimon Abe
  • Single-shaft multistage pump
    Publication number: 20050158165
    Abstract: A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device adapted to apply, to the rotary shaft, a balance thrust force opposing an impeller thrust force. A water-lubricated bearing is used as each of the radial bearings, and the rotary shaft is supported by the water-lubricated bearings with a balance member of the balance device interposed therebetween.
    Type: Application
    Filed: August 6, 2004
    Publication date: July 21, 2005
    Applicant: Hitachi Industries Co., Ltd.
    Inventors: Yoshimasa Chiba, Choichi Ishikawa, Hiroyuki Katsura, Daimon Abe