Patents by Inventor Daniel A. Cardozo

Daniel A. Cardozo 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).

  • Sealing system between a metal insert and plastic coupling, and resulting product
    Patent number: 4790573
    Abstract: Provision is made for installation, in the interior of a plastic coupling, of a cylindrical tubular-shaped metal insert with internal threads and having an externally knurled external flange at one end, followed by an intermediate section whereon external teethlike serrations or the like are provided, finally followed by a circumferential recess to house an elastic sealing ring, which insert is installed in the plastic coupling after the latter has been molded, and by embedding through transmission of pressure and heat.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: December 13, 1988
    Assignee: Tubos e Conexoes Tigre S/A
    Inventor: Daniel A. Cardozo