Patents by Inventor John Kondratuk

John Kondratuk 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).

  • Self-valving vacuum distribution for a belt-driven sheet conveyor
    Publication number: 20050156376
    Abstract: A self-valving vacuum distribution system for a belt-driven sheet conveyor utilizes the sheets to automatically open vacuum control valves sequentially in a downstream direction as the sheet is carried on the belts. The system also automatically adjusts for varying sheet widths to automatically apply vacuum holding force only to the belt conveyor area covered by the sheet.
    Type: Application
    Filed: January 19, 2004
    Publication date: July 21, 2005
    Inventors: John Kondratuk, Carl Marschke