Patents by Inventor Masatake Hattori

Masatake Hattori 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).

  • Insulation means for a centrifugal pump
    Patent number: 6655930
    Abstract: A centrifugal pump for pumping low temperature fluid includes a motor portion driving an impeller of a pump portion. The motor portion and impeller are coaxial. A pot, sealed to the pump portion, receives the low temperature fluid. The low temperature fluid contacts only the pump portion in the pot, thereby reducing the overall heat capacity of the centrifugal pump to reduce start time. A heat insulating jacket is in tight contact with the motor portion. A vent pipe extends from the pot, through the pump portion and within the heat insulating jacket, to a rear of the motor portion to increase safety and provide double-insulation to the vent pipe. The heat insulating jacket reduces the size and surface area of the centrifugal pump to resist heat flow and increase safety.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: December 2, 2003
    Assignee: Nikkiso Co., Ltd.
    Inventors: Hitoshi Sato, Motoyasu Ogawa, Masatake Hattori
  • Centrifugal pump
    Publication number: 20020114714
    Abstract: A centrifugal pump for pumping low temperature fluid includes a motor portion driving an impeller of a pump portion. The motor portion and impeller are coaxial. A pot, sealed to the pump portion, receives the low temperature fluid. The low temperature fluid contacts only the pump portion in the pot, thereby reducing the overall heat capacity of the centrifugal pump to reduce start time. A heat insulating jacket is in tight contact with the motor portion. A vent pipe extends from the pot, through the pump portion and within the heat insulating jacket, to a rear of the motor portion to increase safety and provide double-insulation to the vent pipe. The heat insulating jacket reduces the size and surface area of the centrifugal pump to resist heat flow and increase safety.
    Type: Application
    Filed: December 19, 2001
    Publication date: August 22, 2002
    Inventors: Hitoshi Sato, Motoyasu Ogawa, Masatake Hattori