Patents by Inventor Yasuhiro Shimida

Yasuhiro Shimida 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).

  • Parallel plane holding mechanism and apparatus using such a mechanism
    Patent number: 5554851
    Abstract: A parallel plane holding mechanism is constructed as follows. Beams are provided on the peripheral portion of a flat plate-shaped weight member. A base plate is provided so as to face the weight member. First and second electrodes are provided on both surfaces of the weight member and the base plate to face each other. A voltage is applied between the first electrode and the second electrode so that the distance between the weight member and the base plate is controlled to move the weight member to thereby hold a reference surface of the weight member to be parallel to a predetermined reference surface.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: September 10, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Hirai, Osamu Takamatsu, Katsunori Hatanaka, Masaru Nakayama, Hiroyasu Nose, Takayuki Yagi, Yasuhiro Shimida