Patents by Inventor Lennart Hjert

Lennart Hjert 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 an arrangement for preventing overturning a dump vehicle
    Patent number: 7810887
    Abstract: A method for preventing overturning a dump vehicle, the vehicle including a forward vehicle section with a forward frame and a wheel axle supported by the frame. The dump vehicle further includes a rear vehicle section with a rear frame and at least one wheel axle supported by the frame. The dump vehicle further includes an articulation joint, which connects the forward frame and the rear frame and allows the forward frame and the rear frame to pivot in relation to each other about an axis extending in a longitudinal direction of the vehicle. During a tilting procedure for unloading material from a container of the dump vehicle, the method includes determining if there is a risk for a pair of wheels of the wheel axle of the forward vehicle section to lose ground contact or if the pair of wheels have already lost ground contact.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: October 12, 2010
    Assignee: Volvo Construction Equipment Holding Sweden AB
    Inventors: Kjell-Owe Hjerth, Lennart Hjert
  • METHOD AND AN ARRANGEMENT FOR PREVENTING OVERTURNING A DUMP VEHICLE
    Publication number: 20100045092
    Abstract: A method for preventing overturning a dump vehicle, the vehicle including a forward vehicle section with a forward frame and a wheel axle supported by the frame. The dump vehicle further includes a rear vehicle section with a rear frame and at least one wheel axle supported by the frame. The dump vehicle further includes an articulation joint, which connects the forward frame and the rear frame and allows the forward frame and the rear frame to pivot in relation to each other about an axis extending in a longitudinal direction of the vehicle. During a tilting procedure for unloading material from a container of the dump vehicle, the method includes determining if there is a risk for a pair of wheels of the wheel axle of the forward vehicle section to lose ground contact or if the pair of wheels have already lost ground contact.
    Type: Application
    Filed: March 1, 2005
    Publication date: February 25, 2010
    Applicant: VOLVO CONSTRUCTION EQUIPMENT HOLDING SWEDEN AB
    Inventors: Kjell-Owe Hjerth, Lennart Hjert