Patents by Inventor Jouko Virkkunen

Jouko Virkkunen 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 of damping the sway of the load of a crane
    Patent number: 5127533
    Abstract: Procedure for damping the sway of the load (2) moved by the carriage (1) of a crane, said load being suspended on at least one hoisting rope (3). The damping is achieved by using a discrete time control system whose control interval is varied in accordance with the hoisting rope length (L) while the control parameters remain constant.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: July 7, 1992
    Assignee: Kone Oy
    Inventor: Jouko Virkkunen