Patents by Inventor Toshiyuki Tamatsu

Toshiyuki Tamatsu 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).

  • Escalator apparatus and method of operation
    Patent number: 5526919
    Abstract: Escalator apparatus of the invention is of the type that has a step whose step board can be raised to provide a surface for carrying a wheelchair. In order to realize conveyance of a large size wheelchair or handcart without changing the installation space for the escalator, the escalator apparatus of the invention is structured such that the step boards of a plurality of adjacent steps are movable upwardly and downwardly.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: June 18, 1996
    Assignees: Hitachi, Ltd., Hitachi Mito Engineering Co., Ltd.
    Inventors: Kazuhira Ojima, Chuichi Saito, Kazutoshi Takeda, Toshiyuki Tamatsu
  • Escalator apparatus and method of operation
    Patent number: 5386904
    Abstract: Escalator apparatus of the invention is of the type that has a step whose step board can be raised to provide a surface for carrying a wheelchair. In order to realize conveyance of a large size wheelchair or handcart without changing the installation space for the escalator, the escalator apparatus of the invention is structured such that the step boards of a plurality of adjacent steps are movable upwardly and downwardly.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: February 7, 1995
    Assignees: Hitachi, Ltd., Hitachi Mito Engineering
    Inventors: Kazuhira Ojima, Chuichi Saito, Kazutoshi Takeda, Toshiyuki Tamatsu