Patents by Inventor Toshitaka Tamano

Toshitaka Tamano 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).

  • Conical washer for a high tensile strength bolt
    Patent number: 3992974
    Abstract: The hollow truncated cone of this washer is characterized in that it deforms plastically before it is flattened and deformation load becomes substantially constant during progress of the plastic deformation. Furthermore, the relationship between the yield stress of the cone, the composition of the metal comprising the cone, and the dimensions of the cone may be defined by a constant .gamma..
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: November 23, 1976
    Assignee: Nippon Steel Corporation
    Inventors: Takeshi Miki, Toshitaka Tamano, Takao Yokokawa