Patents by Inventor Yoshimitsu Suganuma

Yoshimitsu Suganuma 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 superfinishing a gothic-arch groove
    Patent number: 5170590
    Abstract: In superfinishing a Gothic-arch-shaped groove of a nut by using a superfinishing stone attached to the tip end of an oscillation arm while oscillating the superfinishing stone about the oscillation axis and, at the same time, moving the superfinishing stone in the longitudinal direction of the Gothic-arch groove, the oscillation axis is inclined by a predetermined angle with respect to the longitudinal direction of the Gothic-arch groove. The shape of the cross section of the Gothic-arch groove orthogonal to the oscillation axis is regarded as a single circular arc and, thus, both flanks of the Gothic-arch groove can be superfinished simultaneously.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: December 15, 1992
    Assignee: Nippon Seiko Kabushiki Kaisha
    Inventors: Chuichi Sato, Yoshimitsu Suganuma