Patents by Inventor Leif Sjogren

Leif Sjogren 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: 4781513
    Abstract: An apparatus for unloading bulk material, particularly asphalt and the like, from the deck (3) of a load-carrying vehicle, and spreading the material (49) over ground (37) contiguous to the vehicle, includes a spreader unit connectable for support to the rear end of the deck (3). The unit comprises a part (5) arranged for connection to the end of the deck for receiving material from the deck, and with the aid of a transverse conveyor (7) to give this material a suitably agitated or comminuted state and convey it further, and a cantilever arm-like conveyor (9), adapted at its first end to receive the material conveyed according to the above and at its second free end to discharge received material, the conveyor (9) being controllably swivelably suspended (at 11) at said first end, so that it can be caused to sweep over ground (37) contiguous to the vehicle, thereby to spread the discharged material (49) over said ground.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: November 1, 1988
    Inventors: Leif Sjogren, Kjell A. Sjogren