Patents by Inventor Masahiro Nakazumi

Masahiro Nakazumi 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).

  • Patent number: 6312019
    Abstract: A pipe joint is provided in which a simple means improves the sealing performance produced by an elastic sealing member housed in a joint body. At one end of a fluid passage 4 that penetrates through the inside of a joint body 1, there is disposed an enlarged diameter recess 8 in which the inner rear side thereof is made into a housing for sealing member 5 and the mouth side thereof is made into a housing for tube holding mechanism 7 having an engaging groove 6 for a tube holding mechanism 2. This joint body 1 is constructed as a cold-forged component of a metal material. An elastic sealing member 3 is housed in the above-mentioned housing for sealing member 5.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: November 6, 2001
    Assignee: SMC Corporation
    Inventors: Masahiro Nakazumi, Shizuo Mori