Patents by Inventor Takashi Ichinose

Takashi Ichinose 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).

  • Commutating type DC circuit breaker arrangement
    Patent number: 5402297
    Abstract: A commutating type DC circuit breaker arrangement comprising: a vacuum circuit breaker having a movable electrode and stationary electrode; a series circuit of a capacitor, a saturation reactor and a commutating switch which is connected in parallel with the vacuum circuit breaker; and an electrical relay for detecting a predetermined electrode open position at which a sufficient insulating distance between the movable electrode and the stationary electrode is maintained via movement of a predetermined position on an actuating rod for the movable electrode and for closing the commutating switch in response to the detection of the predetermined electrode open position.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: March 28, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Shigetoshi Ouchi, Haruo Honda, Toru Yoshida, Yukio Kugoh, Fumihisa Ichikawa, Tutomu Kanno, Takashi Ichinose, Hideaki Tsuda