Patents by Inventor Risto Lehtonen

Risto Lehtonen 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).

  • Method and arrangement for forming a group of rolls
    Patent number: 6601368
    Abstract: The present invention relates to a method and apparatus for forming a group of rolls of at least two rolls of paper, board or cellulosic material web, said method comprising the steps of separating apart from each other the rolls (3, 4, 5, 6, 7) of a roll set received from said slitter-winder (1), and combining desired rolls (3, 4, 5) of the roll set into a multi-roll pack. At least one of the desired rolls (3, 4, 5) to be included in the multi-roll pack is taken apart from the other rolls (6, 7) of the roll set resting on a conveyor (8, 9) and is moved to a waiting station (10) and is then moved back from the waiting station (10) onto the conveyor (9) in a manner allowing the desired rolls (3, 4, 5) of the multi-roll pack to be sorted into a desired order having the adjacent ends of the rolls facing each other.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: August 5, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Risto Lehtonen, Esko Nieminen