Patents by Inventor Hiroshi Otsuji

Hiroshi Otsuji 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).

  • Non-gasket sealing structure
    Patent number: 6123339
    Abstract: There is provided a sealing structure including a body portion having an outer surface at which the body portion is kept in contact with an opponent part, the body being formed with a bore therethrough, the body portion being formed at the outer surface thereof with at least one annular projection or recess designed to be swingable in a direction in which the bore extends. Since the annular projection or recess is designed to be swingable, when the body portion is connected to an opponent part through the outer surface thereof, the outer surface can be deformed, resulting in ensuring quite high sealing between the body portion and the opponent part.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: September 26, 2000
    Assignee: Daiso Corporation
    Inventors: Hiroshi Otsuji, Masato Nagawa