Patents by Inventor Masataka Kikuchi

Masataka Kikuchi 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).

  • Bearing retainer
    Patent number: 4473260
    Abstract: A retainer for bearing having a ball confining pocket in an oval shape, which is defined by a pair of semi-circles and a rectangular space between the semi-circles, each semi-circle having a radius substantially corresponding to the radius of the ball, and the rectangular space having a short side length corresponding to a clearance between the ball and the pocket surface and a long side length corresponding to a diameter of the ball.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: September 25, 1984
    Assignee: The Director of National Aerospace Laboratory of Science and Technology Agency
    Inventors: Masataka Nosaka, Masataka Kikuchi