Patents by Inventor Lynn Robb

Lynn Robb 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).

  • Cold chamber magnesium pump assembly
    Patent number: 5630464
    Abstract: The machine has a holding pot containing molten magnesium in which a pumping chamber is submerged, a filling port is provided through a bottom wall of the pumping chamber, defined at least in part by a cylindrical wall surface, and an axially moveable control rod with a cylindrical shut-off part is moved between a position at which it is within the confines of the cylindrical wall surface and a position at which it is free of that wall surface. The clearance of the cylindrical wall surface and the cylindrical shut-off part of the control rod is such as to permit free movement of the rod part through the port, but, by virtue of the wetting of the surfaces by the molten magnesium, to seal the port against the pressures applied to it.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: May 20, 1997
    Assignee: Spartan Light Metal Products, Inc.
    Inventors: Robert Bauman, Frank Wilson, Lynn Robb