Patents by Inventor Wiking Gunnarsson

Wiking Gunnarsson 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).

  • Two arms system
    Patent number: 6260720
    Abstract: Unit cranes consist of three hinged arms (13-15), the middle arm (14) being in the form of a polygon comprising a number of units jointed together, the flexibility of the units being arranged by influencing the units internally. The object of the invention is to achieve improved traction curves and speed curves, and this is effected by influencing the movement of the units from the outside by means of a hydraulic mechanism (38).
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: July 17, 2001
    Inventors: Wiking Gunnarsson, Karl Gustav Lindqvist
  • Two arms system
    Patent number: 6193087
    Abstract: Unit cranes consist of three jointed arms (13-15), the middle arm (14) being in the form of a polygon comprising a number of units jointed together, the mobility of the units being arranged by influencing the units internally. The object of the invention is to achieve improved traction curves and speed curves, and this is effected by influencing the movement of the units from the outside by means of a hydraulic mechanism.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: February 27, 2001
    Assignee: Motrac AB
    Inventors: Wiking Gunnarsson, Karl Gustav Lindqvist