Patents by Inventor David Georg Lindeborg

David Georg Lindeborg 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 of conveying and desintegrating refuse and the like, and apparatus for carrying out this method
    Patent number: 4040571
    Abstract: Method and apparatus for conveying and disintegrating refuse and the like comprising a plurality of mutually cooperating, rotatable feed screws arranged in a common feeding-in chamber. The direction of rotation of at least one of said screws is intermittently reversed relative to at least one other of said screws according to a predetermined program for temporarily feeding part of said refuse backwards.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: August 9, 1977
    Assignee: Norba Aktiebolag
    Inventor: David Georg Lindeborg