Patents by Inventor George Finkelshteyn

George Finkelshteyn 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: 7918380
    Abstract: A tapered tube manufacturing apparatus and method of operation comprises an entry station adapted to receive a tapered tube having an open, longitudinal seam with spaced longitudinal edges extending the length of the tapered tube. A feed line section moves the tapered tube from the entry section into a welding station while maintaining the longitudinal seam coincident with a pass center line which defines a direction of movement of the tapered tube through the entry station, the feed line section and the welding station. A pair of squeeze rolls in the welding station move the tapered tube through the welding station where the edges of the seam are heated, squeezing the open seam closed for welding the edges of the seam together, and then move the welded tapered tube into a cooling and transition station while maintaining the welded seam coincident with the pass center line.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: April 5, 2011
    Inventors: Kenneth R. Letzkus, George Finkelshteyn