Patents by Inventor Ottmar Neuwirth

Ottmar Neuwirth 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 COMPRESSOR
    Publication number: 20170211575
    Abstract: A screw compressor, in particular for refrigeration systems, comprising a compressor housing (1) which at least partly encloses the compressor, an integrated suction gas filter (2) and a non-return valve (7) that is to be actuated by pressurized gas; the compressor housing (1) has grooves, in particular drilled or cast ducts (13, 16 22, 23, 24) to which pressurized gas can be fed in order to control the non-return valve (7).
    Type: Application
    Filed: July 10, 2015
    Publication date: July 27, 2017
    Inventors: Ole FREDRICH, Ottmar NEUWIRTH, Stefan LOSCH
  • Rotor pair for high pressure screw compressor and screw compressor using same
    Patent number: 5096399
    Abstract: A rotor pair for a high-pressure screw compressor having main and secondary rotors, the main rotor having essentially convex teeth arranged outside its reference circle and the secondary rotor having essentially concave teeth arranged inside its reference circle. The distance between the axes of the rotors, which limits the size of the possible bearings, is enlarged only by increasing the number of teeth and the diameter of the secondary rotor so that it is larger than the main rotor.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: March 17, 1992
    Assignee: Bauer Kompressoren GmbH
    Inventors: Dieter Mosemann, Hans-Ulrich Pews, Andreas Rietzke, Horst Maier, Ottmar Neuwirth, Peter Kolberg