Patents by Inventor Niroyuki Kurio

Niroyuki Kurio 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).

  • Corner seal for rotary piston engines
    Patent number: 4138124
    Abstract: Corner seal for rotary piston engines comprising a substantially cylindrical body which is formed with a groove for accommodating an end of the apex seal. The corner seal has an end surface adapted to be brought into a slidable engagement with the inner surface of a side housing. The end surface of the corner seal is formed with a recess so that the area of the sliding surface is decreased to 45 to 75% of a sum of the area of the sliding surface and the area of the recess.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: February 6, 1979
    Assignee: Toyo Kogyo Co., Ltd.
    Inventor: Niroyuki Kurio