Patents by Inventor Ole FREDRICH

Ole FREDRICH 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
    Patent number: 10648473
    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: Grant
    Filed: July 10, 2015
    Date of Patent: May 12, 2020
    Assignee: GEA REFRIGERATION GERMANY GMBH
    Inventors: Ole Fredrich, Ottomar Neuwirth, Stefan Losch
  • 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