Patents by Inventor Shiro Okubo

Shiro Okubo 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).

  • Apparatus for opening and closing working areas of machine tool
    Patent number: 6405483
    Abstract: In an apparatus for opening and closing a working area of a machine tool (1) which comprises a front door (6) for opening and closing an operation opening (5a) formed in a cover (5) serving as a partition between the working area A and an operator, and a ceiling shutter (8) covering an upper part of the above working area A so as to be opened and closed, there is provided a detection switch for detecting a closed condition of the front door (6), and an interlocking mechanism (9) for blocking a closing operation of the front door (6) while the ceiling shutter is open.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: June 18, 2002
    Assignee: Mori Seiki Co., Ltd.
    Inventors: Naoya Tamada, Shiro Okubo