Patents by Inventor Nobuaki Okanari

Nobuaki Okanari 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).

  • Gas insulated switchgear
    Patent number: 7675738
    Abstract: A gas insulated switchgear has: circuit breakers, circuit breaker vessels, first disconnector and maintenance earthning switches connected to first bus bars connected to circuit breaker vessels and also to main bus bars, second disconnector and maintenance earthning switches connected to second bus bars connected to the circuit breaker vessels, circuit breaker operating mechanisms, first and second disconnector and maintenance earthning switch operating mechanisms, and first and second disconnector and maintenance earthning switch operation links for linking the disconnector and maintenance earthning switches and the operating mechanisms for three phases. The second disconnector and maintenance earthning switch operation links are arranged so as to pass through inter-phases of the first bus bars and the operating panels of the circuit breaker operating mechanism and the first and second disconnector and maintenance earthning switch operating mechanisms of each phase are arranged on a common flat plane.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: March 9, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Fukunaga, Masayuki Kosakada, Nobuaki Okanari
  • GAS INSULATED SWITCHGEAR
    Publication number: 20080049383
    Abstract: A gas insulated switchgear has: circuit breakers, circuit breaker vessels, first disconnector and maintenance earthning switches connected to first bus bars connected to circuit breaker vessels and also to main bus bars, second disconnector and maintenance earthning switches connected to second bus bars connected to the circuit breaker vessels, circuit breaker operating mechanisms, first and second disconnector and maintenance earthning switch operating mechanisms, and first and second disconnector and maintenance earthning switch operation links for linking the disconnector and maintenance earthning switches and the operating mechanisms for three phases. The second disconnector and maintenance earthning switch operation links are arranged so as to pass through inter-phases of the first bus bars and the operating panels of the circuit breaker operating mechanism and the first and second disconnector and maintenance earthning switch operating mechanisms of each phase are arranged on a common flat plane.
    Type: Application
    Filed: July 11, 2007
    Publication date: February 28, 2008
    Inventors: Masayuki FUKUNAGA, Masayuki Kosakada, Nobuaki Okanari