Patents by Inventor Dario Ivan Sassi

Dario Ivan Sassi 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).

  • Mixing device for extruders
    Patent number: 7036974
    Abstract: A mixing device comprises a cylindrical body (14) to be terminally engaged with an extrusion screw (2) and carrying at least one primary mixing thread (15) and at least one secondary mixing thread (16) having a crest diameter (d3) smaller than the crest diameter (d1) of the primary mixing thread (15). The primary mixing thread (15) has a helical extension in the same direction as that of the secondary mixing thread (16), to delimit at least one primary flow channel (17) and at least one secondary flow channel (18) that are substantially parallel. The primary mixing thread (15) further has, on its crest (19), communication grooves (20) between the primary (17) and secondary (18) flow channels.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: May 2, 2006
    Assignee: M.R.S. Italia S.R.L.
    Inventors: Dario Ivan Sassi, Francesco Sant'elia
  • Mixing device for extruders
    Publication number: 20040179425
    Abstract: A mixing device comprises a cylindrical body (14) to be terminally engaged with an extrusion screw (2) and carrying at least one primary mixing thread (15) and at least one secondary mixing thread (16) having a crest diameter (d3) smaller than the crest diameter (d1) of the primary mixing thread (15). The primary mixing thread (15) has a helical extension in the same direction as that of the secondary mixing thread (16), to delimit at least one primary flow channel (17) and at least one secondary flow channel (18) that are substantially parallel. The primary mixing thread (15) further has, on its crest (19), communication grooves (20) between the primary (17) and secondary (18) flow channels.
    Type: Application
    Filed: June 4, 2003
    Publication date: September 16, 2004
    Inventors: Dario Ivan Sassi, Francesco Sant'elia