Patents by Inventor Vilim Cvitas

Vilim Cvitas 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: 4789469
    Abstract: For the purpose of introducing or removing gases into liquids or out of liquids, in particular substrates being subject to a biological conversion, rotating plates (3) are immersed into the liquid phase. The plates (3) are rotatably arranged within a tubular receptacle (1) and arranged in at least one axial section such that they alternately include with the axis (2) of rotation extending in parallel relation to the liquid level an angle of more and less than 90.degree.. Shut-off valves (9) for the gas supply conduit and for the gas discharge conduit are connected to the tubular container (1). The plates (3) are provided with a rough surface and are preferably formed of a porous, in particular foamed, material, wire mesh, wire grating or expanded metal sheet. (FIG.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: December 6, 1988
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Vilim Cvitas, Karl Faltejsek, Gottfried Klinar, Reinhart Hanke
  • Patent number: 4749651
    Abstract: In an enzymatic saccharification process, a sugar solution of constant sugar content is obtained by adding to the starch-containing raw materials, prior to the enzymatic saccharification step, part of the sugar solution obtained after the saccharification step and being separated from solid material and having been brought to a higher concentration, so that a higher sugar content, in particular within the range from 15 to 22% by weight and preferably approximately 20% by weight, can constantly be maintained, independent of the concentration and quality of the raw materials.
    Type: Grant
    Filed: January 12, 1984
    Date of Patent: June 7, 1988
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Vilim Cvitas, Karl Faltejsek, Reinhart Hanke, Bertalan Treso
  • Patent number: 4741827
    Abstract: The apparatus for removing liquid films floating on liquids, in particular oil films floating on water, has a plurality of rotatably supported plates (3) which are driven for rotation around an axis (2) and which are immersed into the liquid level. The oil entrained by the surface of the plates (3) on emersion from the liquid level is stripped by means of strippers (4) and supplied to a collecting launder (5).
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: May 3, 1988
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Gottfried Klinar, Vilim Cvitas
  • Patent number: 4738930
    Abstract: Apparatus for continously producing ethanol from fermentable sugar solutions comprises horizontal, tubular mixing and separating vessel having internal rotating plates inclined relative to the horizontal axis of rotation. The yeast charged to the vessel is extracted from the vessel and is subjected to a multi-stage fermentation within horizontal fermentation vessels. Within the fermentation vessels there are again arranged inclined rotating plates. The ethanol is separated in a gaseous phase, the pressure being reduced stepwise in succeeding fermentation vessels tubes.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: April 19, 1988
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Karl Faltejsek, Vilim Cvitas, Reinhart Hanke, Gottfried Klinar
  • Patent number: 4734193
    Abstract: The apparatus for continuously separating liquid phases of different density consists of a separating basin (1) within which are arranged partition walls (5) for being lifted and lowered and for being moved one in direction to the other or for being swivelled. Swivelling of the partition walls (5) is effected about an eccentrically arranged axis (7) such that during the swivelling movement the partition walls (5) are simultaneously lifted or lowered. The partition walls (5) can be driven by push rods (8) and thus be swivelled in the contrary sense. When swivelling the partition walls (5) in one direction, the liquid level is lifted in the chamber defined between the partition walls and is lowered in the adjacent chamber, noting that the portion having the lower specific gravity flows over the upper edge, assuming a lower level, of the one partition wall in one direction (11) and that the proportion having the higher specific gravity flows in direction of the arrow (12), i.e.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: March 29, 1988
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Vilim Cvitas, Karl Faltejsek, Reinhart Hanke, Gottfried Klinar
  • Patent number: 4685899
    Abstract: The solid jacket centrifuge is a plural chamber centrifuge (1). A housing (2) is, together with the centrifuge, stationarily supported, noting that a carrier (6) for cylindrical mantle surfaces (7 and 8) is provided within the housing (2). The cylindrical mantle surfaces (7 and 8) delimit annular chambers (9 and 10) and are shiftable in the direction of the axis of the shaft (3). There is further provided a screw conveyor (12) for introducing the material to be dewatered. The material to be dewatered enters the first annular chamber (9) via radial channels (15). By shifting the cylindrical mantle surface (7) in the axial direction, the material is discharged in a radial direction into the concentric greater annular chamber (10). When subsequently the mantle surface (8) is moved in the axial direction, discharge is again effected in the radial direction.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: August 11, 1987
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventors: Vilim Cvitas, Karl Faltejsek, Reinhart Hanke, Alois Janusch, Gerhard Larch