Patents by Inventor Takeo Fukaya

Takeo Fukaya 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).

  • Method of and apparatus for measuring pile skin friction
    Patent number: 4640118
    Abstract: Measurement of the skin friction of piles, according to which a skin-friction measuring device having a cylindrical testing part which is rotatable relative to a main body of the device is introduced into a bored hole in a ground and is rotated by a boring rod, and by rotating the boring rod, the friction force then generated between the cylindrical testing part and the wall of the bored hole is determined in terms of the torque required for rotating the cylindrical testing part.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: February 3, 1987
    Assignee: Toa Harbor Works, Co., Ltd.
    Inventors: Takao Kishida, Takeo Fukaya