Patents by Inventor Dieter Sprandel

Dieter Sprandel 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).

  • Publication number: 20080085824
    Abstract: The invention discloses a device for folding and bonding plastic-laminated pre-cut blanks, in particular PE-laminated cardboard packages for beverages, comprising a peeling station for selectively peeling off a plastic lamination of a pre-cut blank; a creasing station for production of a folding line in a blank; a heating station for selectively heating up a plastic lamination on a blank that is to be bonded; a folding station for folding a blank about a folding line; a pressing station for pressing and bonding a folded blank; and conveying means for conveying blanks through the stations. The heating station comprises a burner having an oblong burner chamber which is provided on its top with a series of flame openings arranged one behind the other in the axial direction, for permitting flames to exit the chamber, and a liquid cooling system.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 10, 2008
    Applicants: FORTUNA SPEZIALMASCHINEN GMBH, INTERNATIONAL PAPER BOX MACHINE COMPANY
    Inventors: Dieter Sprandel, Hans Lassnig, Markus Hoffmann, Werner Wattinger
  • Patent number: 6698325
    Abstract: A machine for skiving or splitting nonmetallic planar workpieces, in particular plastic-coated paper-like workpieces, is disclosed. The machine has a motor-driven moving knife, in particular a bell knife or hoop knife, whose cutting edge moves around a closed loop and has a specific contour. A grinding device for grinding the knife is provided. In order to increase the service life, a cleaning device is provided, which can be displaced towards the cutting edge for removing contaminants adhering to the cutting edge.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: March 2, 2004
    Assignee: Fortuna Spezialmaschinen GmbH
    Inventor: Dieter Sprandel