Patents by Inventor Ake Ekelund

Ake Ekelund 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).

  • Screw conveyor
    Patent number: 4717014
    Abstract: A screw conveyor has a feeder device for promoting the supply of material to the screw, said feeder device and said screw being rotatable in opposite directions. The feeder device has blades (14, 15) which are curved in the manner of a trawl to draw in the material both from above and from below and to guide it inwardly towards the interior of said feeder device.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: January 5, 1988
    Assignee: AB Siwertell
    Inventor: Ake Ekelund