Patents by Inventor Paul Schlager

Paul Schlager 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).

  • Apparatus for extending ventilating conduits
    Patent number: 4361079
    Abstract: Apparatus for continuously extending ventilating conduits in tunnelling or mining environments includes a tubular store to which a funnel guide is releasably connected. A folded flexible ventilating pipe is received on the store and fastening means are provided to connect an end of the ventilating pipe to the end of the ventilating conduit to be extended. In use, the apparatus is advanced and the ventilating pipe is gradually pulled off the store and unfolded by being passed over the funnel guide.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: November 30, 1982
    Assignees: Ruhrkohle AG, Maschinenfabrik Korfmann GmbH
    Inventors: Hans Christensen, Paul Schlager, Werner Korfmann