Patents by Inventor Yoshitada Ikuyama

Yoshitada Ikuyama 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).

  • Publication number: 20130055784
    Abstract: An outer joint member which has a cup portion formed, on the inner surface thereof, with a plurality of track grooves extending in the axial direction, the cup portion having a chamfering portion provided in the region between the track grooves at the inner peripheral edge thereof, at least the inner surface and the outer surface of the cup portion being shaped by forging. The chamfering portion includes a first chamfering portion for allowing the angle shift of the joint, and second chamfering portions which are provided adjacent to both peripheral sides of the first chamfering portion and are inclined in the direction different from the first chamfering portion.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 7, 2013
    Inventors: Yoshitada Ikuyama, Kunihiro Shibata, Hideki Fukawa