Patents by Inventor Lars Rydström

Lars Rydström 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).

  • Mechanical tailgate
    Patent number: 8500206
    Abstract: A mechanical tailgate (3) for a dump body (1) of an underground truck, the purpose of the mechanical tailgate is to increase the loading capacity of the dump body, which mechanical tailgate is pivotably arranged between an opened and a closed position, comprising a tailgate sheet (4) attached to two lifting arms (5), which are pivotably arranged to the dump body (1), the dump body (1) comprises also a controlled tailgate (2) arranged to be controlled between opened and closed position of the dump body, the opening and closing movement of the controlled tailgate (2) is effected in the form of a circular movement. In the closed position of the mechanical tailgate (3) and the controlled tailgate (2), the tailgate sheet (4) and the controlled tailgate (2) are arranged to be positioned overlapping each other in such a way that a lower edge of the tailgate sheet (4) is placed on the inside of an upper edge of the controlled tailgate (2) for locking the tailgate sheet (4) towards the controlled tailgate (2).
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: August 6, 2013
    Assignee: Atlas Copco Rock Drills AB
    Inventor: Lars Rydström
  • MECHANICAL TAILGATE
    Publication number: 20090302629
    Abstract: A mechanical tailgate (3) for a dump body (1) of an underground truck, the purpose of the mechanical tailgate is to increase the loading capacity of the dump body, which mechanical tailgate is pivotably arranged between an opened and a closed position, comprising a tailgate sheet (4) attached to two lifting arms (5), which are pivotably arranged to the dump body (1), the dump body (1) comprises also a controlled tailgate (2) arranged to be controlled between opened and closed position of the dump body, the opening and closing movement of the controlled tailgate (2) is effected in the form of a circular movement. In the closed position of the mechanical tailgate (3) and the controlled tailgate (2), the tailgate sheet (4) and the controlled tailgate (2) are arranged to be positioned overlapping each other in such a way that a lower edge of the tailgate sheet (4) is placed on the inside of an upper edge of the controlled tailgate (2) for locking the tailgate sheet (4) towards the controlled tailgate (2).
    Type: Application
    Filed: August 24, 2007
    Publication date: December 10, 2009
    Inventor: Lars Rydström