Patents by Inventor Horofumi Hirano

Horofumi Hirano 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: 4762434
    Abstract: A ribbon feed device includes; a drive gear capable of rotating about a first shaft in clockwise and counter-clockwise directions by a rotation force transmitted from a drive source; a ribbon feed gear for feeding an ink ribbon capable of rotating about a second shaft; and an intermediate gear which swings about the first shaft while meshing with the drive gear, meshes with the ribbon feed gear at a first position during the rotation of the drive gear in the clockwise direction, meshes with the ribbon feed gear at a second position during the rotation of the drive gear in the counter-clockwise direction, and renders the ribbon feed gear rotate always in the same direction irrespective of the rotation direction of the drive gear.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: August 9, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventor: Horofumi Hirano