Patents by Inventor Alfred Freh

Alfred Freh 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).

  • Patent number: 7191547
    Abstract: The present invention relates to a novel installation (100) for drying products (70) of the most varied type, the dehumidifying apparatus (10) of which comprises two silica-gel adsorbent bodies (20, 20?) which work in alternating operation and which—in a periodically mutually alternating manner—pass through an adsorption or dehumidifying phase (EB) and a regeneration phase (RB), the periodic changeover to the respective other phase and vice versa being effected by means of a control unit (8), which can be supplied with moisture data or the like from moisture sensors or the like, e.g. as a function of the moisture of the air after passing through the adsorbent body (20, 20?) which is in the regeneration phase (RB), the dehumidified air (lt) being drawn by means of a suction fan (71) through a drying chamber (7) containing the product (70) to be dried.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: March 20, 2007
    Inventors: Alfred Wiedl, Alfred Freh, Alois Reiterbauer
  • Publication number: 20050268481
    Abstract: The present invention relates to a novel installation (100) for drying products (70) of the most varied type, the dehumidifying apparatus (10) of which comprises two silica-gel adsorbent bodies (20, 20?) which work in alternating operation and which—in a periodically mutually alternating manner—pass through an adsorption or dehumidifying phase (EB) and a regeneration phase (RB), the periodic changeover to the respective other phase and vice versa being effected by means of a control unit (8), which can be supplied with moisture data or the like from moisture sensors or the like, e.g. as a function of the moisture of the air after passing through the adsorbent body (20, 20?) which is in the regeneration phase (RB), the dehumidified air (lt) being drawn by means of a suction fan (71) through a drying chamber (7) containing the product (70) to be dried.
    Type: Application
    Filed: November 12, 2003
    Publication date: December 8, 2005
    Inventors: Alfred Wiedl, Alfred Freh, Alois Reiterbauer