Patents by Inventor Tiziana Pietrobon

Tiziana Pietrobon 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).

  • Process for manufacturing hollow one-piece metal elements
    Patent number: 5097689
    Abstract: A process for producing hollow one-piece elements having a highly curved lateral wall from metal, in particular copper or copper alloy, pipes. A cylindrical pipe is widened via permanent deformation between two appropriately shaped dies, by simultaneously applying hydraulic pressure directly inside the pipe and axial pressure on the opposite ends of the pipe; the required finished shape being achieved in successive stages, by inserting inside the dies molds having a predetermined profile and of gradually increasing size.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: March 24, 1992
    Assignee: Europa Metalli-LMI S.p.A.
    Inventor: Tiziana Pietrobon