Patents by Inventor Tadashi Masuda

Tadashi Masuda 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).

  • Cast wheel
    Patent number: 4861113
    Abstract: A full face type cast wheel, wherein a rim portion holding a tire and a disk portion connected to the rim portion are integrally cast, includes a side wall portion extending from a dropped portion of the rim portion to a bead seat portion of the rim portion and a plurality of recessed portions defined intermittently in the circumferential direction of the wheel on a surface of the side wall portion facing the inside of the tire. By formation of the recessed portions, the weight of the wheel can be decreased, generation of blowholes in a casting process can be prevented and air capacity of the tire can be increased.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: August 29, 1989
    Assignee: Topy Kogyo Kabushiki Kaisha
    Inventors: Tadashi Imamura, Kazuyuki Shigaki, Yuji Yamazaki, Tadashi Masuda, Tsunemasa Okumura