Patents by Inventor Piotr Doerffer

Piotr Doerffer 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).

  • ACTIVE WINDMILL WITH THE AXIS OF ROTATION TRANSVERSE TO THE DIRECTION OF THE WIND
    Publication number: 20140334912
    Abstract: The active windmill with the rotation axis transverse to the wind direction with at least one windmill module containing an assembly of counter-rotating impellers operating in the tandem setting and provided with a two-part guiding plate that covers the impeller parts moving against the wind, wherein each of the guiding plates is located between the mast and one of the impellers, characterized in that the guiding plate's right and left parts are separate elements and are connected with each other by tensioning assembly.
    Type: Application
    Filed: November 20, 2012
    Publication date: November 13, 2014
    Applicant: WINENERG SPÓLKA Z OGRANICZONA ODPOWIDEDZIALNOSCIA
    Inventor: Piotr Doerffer
  • Method of improving the flow conditions in an axial-flow compressor, and axial-flow compressor for carrying out the method
    Publication number: 20050147497
    Abstract: In a method of improving the flow conditions on the suction side (21) of the blade (12) of an axial-flow compressor (10) provided for compressing air, in which method vortices running in the direction of flow are generated on the suction side (21), a marked improvement is achieved in a simple and reliable manner by the vortices being generated by local air jets (18) formed on the suction side (21).
    Type: Application
    Filed: November 24, 2004
    Publication date: July 7, 2005
    Applicant: ALSTOM Technology Ltd
    Inventors: Piotr Doerffer, Klaus Hubrich, Wolfgang Kappis