Patents by Inventor Yasunori Hatano

Yasunori Hatano 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).

  • Brush and commutator motor having brush device using the same
    Patent number: 5481150
    Abstract: A binded carbon brush includes a brush main portion formed mainly of carbon, and an electric conductor formed by a material, such as a copper powder, having an electric resistivity lower than that of the brush main portion and extending along a main current direction of the brush. In the cross section of the brush perpendicular to the main current direction, the diameter or the vertical and horizontal sizes of the conductor is so set as to be smaller than both the vertical and horizontal sizes of the brush main portion.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: January 2, 1996
    Assignee: Kabushiki Kaisha Tec
    Inventors: Motoyuki Tanaka, Yasunori Hatano, Tadashi Ozawa
  • Brush and commutator motor having brush device using the same
    Patent number: 5387832
    Abstract: A binded carbon brush includes a brush main portion formed mainly of carbon, and an electric conductor formed by a material, such as a copper powder, having an electric resistivity lower than that of the brush main portion and extending along a main current direction of the brush. In the cross section of the brush perpendicular to the main current direction, the diameter or the vertical and horizontal sizes of the conductor is so set as to be smaller than both the vertical and horizontal sizes of the brush main portion.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: February 7, 1995
    Assignee: Tokyo Electric Co., Ltd.
    Inventors: Motoyuki Tanaka, Yasunori Hatano, Tadashi Ozawa, Tatsuya Ikegami, Hiroyuki Yoshizawa