Patents by Inventor Kouzou Maeta

Kouzou Maeta 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).

  • Circuit breaker
    Patent number: 7482901
    Abstract: A circuit breaker is comprised of a make-and-break mechanism part disposed between frame plates opposite to each other; a base in which a breaking portion including cross bar, moving contact, fixed contact and arc-extinguishing device, and an over-current trip device are contained; a middle base, in which a partition wall separating the breaking portion from the make-and-break mechanism part, and the breaking portion from the over-current trip device, is provided; and a cover for covering the base and middle base. A frame of the make-and-break mechanism part is secured to the base through the middle base, and the secured part of the frame and the inner bottom face of the base are disposed in the proximity.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: January 27, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kazumasa Watanabe, Hiroyuki Kakisako, Shigeki Koumoto, Takashi Iitsuka, Kouzou Maeta
  • Circuit breaker
    Publication number: 20070139147
    Abstract: A circuit breaker is comprised of a make-and-break mechanism part disposed between frame plates opposite to each other; a base in which a breaking portion including cross bar, moving contact, fixed contact and arc-extinguishing device, and an over-current trip device are contained; a middle base, in which a partition wall separating the breaking portion from the make-and-break mechanism part, and the breaking portion from the over-current trip device, is provided; and a cover for covering the base and middle base. A frame of the make-and-break mechanism part is secured to the base through the middle base, and the secured part of the frame and the inner bottom face of the base are disposed in the proximity.
    Type: Application
    Filed: June 8, 2006
    Publication date: June 21, 2007
    Inventors: Kazumasa Watanabe, Hiroyuki Kakisako, Shigeki Koumoto, Takashi Iitsuka, Kouzou Maeta