Patents by Inventor Wataru Ishizu

Wataru Ishizu 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).

  • Earthquake-proof leg support structure of electronic apparatus
    Patent number: 5310156
    Abstract: An earthquake-proof leg support structure (10) of an electronic apparatus comprising a leg (12) vertically downwardly extending from the outer case (1) and a dish-shaped leg support seat (20) to receive the leg (12). The leg support seat (20) includes a metal element (28) having an upper surface (22) over which the leg (12) slides and a peripheral flange (24) against which the leg (12) abuts, and a plastic liner (30) having a lower flat smooth surface (26) which is slidable on the floor. The lower end surface (14) of the leg is of a convex spherical shape and the upper surface (22) of the leg support seat includes a central surface portion (22a) of a concave spherical shape and a cone-shaped slope portion (22b) arranged around and tangential to the central surface portion, with the radius of curvature of the leg (12) being smaller than that of the upper surface (22) of the leg support seat (20 ).
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: May 10, 1994
    Assignee: Fujitsu Limited
    Inventors: Tadanobu Matsumura, Yasuhide Iwamoto, Yoshio Makino, Osamu Nishina, Katuei Satou, Takasi Watanabe, Yujiro Hata, Toshiro Kubo, Wataru Ishizu, Takashi Simura