Patents by Inventor Akihide Umada

Akihide Umada 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).

  • Tightening structure using high-strength self-forming screws
    Patent number: 7938609
    Abstract: The present invention provides a tightening structure with which a reduction in processing steps is achieved without modifying the shape of a partner member an improvements in bolt strength and fatigue strength are achieved, and with which the fitting length of a thread ridge is not altered greatly in comparison with a conventional tightening structure such that a size reduction can be achieved, thereby contributing greatly to a reduction in the weight of a vehicle.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: May 10, 2011
    Assignee: Kabushiki Kaisha Topura
    Inventors: Shigeto Mori, Akihide Umada, Mayumi Matsuno
  • Tightening structure using high-strength self-forming screws
    Publication number: 20100008716
    Abstract: The present invention provides a tightening structure with which a reduction in processing steps is achieved without modifying the shape of a partner member an improvements in bolt strength and fatigue strength are achieved, and with which the fitting length of a thread ridge is not altered greatly in comparison with a conventional tightening structure such that a size reduction can be achieved, thereby contributing greatly to a reduction in the weight of a vehicle.
    Type: Application
    Filed: December 3, 2008
    Publication date: January 14, 2010
    Inventors: Shigeto Mori, Akihide Umada, Mayumi Matsuno