Patents by Inventor Bertil Tenn

Bertil Tenn 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).

  • Patent number: 4321977
    Abstract: A hauling vehicle in the form of a so-called terminal tractor intended for transporting containers, but which also can be used for transporting different kinds of trailers provided only with rear wheels, is two-axled and provided at its rear end with connecting means designed to provide essentially rigid interconnection of the vehicle frame with the front end of the container or trailer to be hauled. The rear wheels of the hauling vehicle are steerable as well as drivable from the driving motor of the vehicle. The rear axle is connected to the vehicle frame by means, e.g., hydraulic cylinders, enabling adjustment of the vertical position of the vehicle frame relative to the rear axle. After the rear end of the vehicle frame has been rigidly interconnected with the front end of the container, the vehicle frame can be raised relative to the rear axle, whereby the front end of the container is lifted up into the air.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: March 30, 1982
    Inventor: Bertil Tenn