Patents by Inventor Tosio Ichida

Tosio Ichida 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 indicating incomplete and complete fastening of screw components
    Patent number: 4988246
    Abstract: Apparatus for indicating incomplete and complete fastening of a screw includes a washer and a ring of a generally flat synthetic resin sheet. The washer includes a pair of washer portions of a generally flat, round shape and a joint portion interconnecting the washer portions to face them in opposite directions to enable the washer portions to receive a shank of a screw in the openings thereof. The lengthwise section of the joint portion forms generally a U shape. The ring is made of a generally round, deformable material and is inserted between the pair of washer portions thus facing each other. The deformable material is expanded radially outward, when compressed by the washer portions receiving the shank of the screw when fastened. Upon the compressive force reaching a predetermined value, the ring will be broken due to the pair of washer portions overlaying one another.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: January 29, 1991
    Assignee: Kyodo Electric Co., Ltd.
    Inventors: Minoru Yoshida, Teruo Arai, Toshiro Ishikawa, Masaji Shimada, Shigeru Susaki, Yukihiko Yamada, Hisao Ohta, Katsuyoshi Nagami, Kazutami Hayajiri, Takaharu Yoshioka, Shigo Hirai, Tosio Ichida, Nobuyuki Ishii