Patents by Inventor Harry Hellwig

Harry Hellwig 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).

  • Jib system for cranes, especially mobile cranes
    Patent number: 4892201
    Abstract: A telescopic outrigger is swivel mounted and disposed so that it can be moved in the longitudinal direction in an jib trough. When the telescopic jib is in its horizontal or slightly inclined operating position, it is situated in the jib trough. In order to achieve a steep operating position, it is moved lengthwise in the jib trough in the direction of the jib tip, and is raised up about a pivot.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: January 9, 1990
    Assignee: VEB Schwermaschinenbaukombinat Takraf
    Inventors: Harry Hellwig, Klaus-Dietrich Sturm