Patents by Inventor Takashi Sumida

Takashi Sumida 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).

  • Patent number: 4635879
    Abstract: In a tape cartridge comprising a case body having an opening for viewing the amount of roll of tape, at least one hub accommodated in the case body for winding a recording tape, a plate for closing the opening and a braking member for stopping rotation of the hub when not in use, the plate is composed of a support plate and a transparent window plate portion and is assembled in the case body defining a gap g between the support plate and the inner face of the top wall of the case body. The brake member is slidably inserted in the gap g with a part of the brake member engaging a part of the hub to stop rotation thereof.
    Type: Grant
    Filed: September 11, 1985
    Date of Patent: January 13, 1987
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Takashi Sumida, Sigeo Sasaki, Takao Ketori, Kazuhiro Fujita