Patents by Inventor Rolf Ljungtström

Rolf Ljungtström 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).

  • Apparatus for simultaneous cleaning of a liquid and a gas
    Patent number: 7156901
    Abstract: An apparatus for simultaneous cleaning of a liquid and a gas includes a centrifugal rotor delimiting in a casing a separation chamber that is arranged for through flow and cleaning of the liquid. On the outside of the casing separation discs are mounted for rotation with the centrifugal rotor. Between the separation discs there are formed axially extending separation passages formed for through flow and cleaning of the gas.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: January 2, 2007
    Assignee: Alfa Laval Corporate AB
    Inventors: Ingvar Hällgren, Leif Larsson, Rolf Ljungtström
  • Apparatus for simultaneous cleaning of a liquid and a gas
    Patent number: 7081146
    Abstract: An apparatus for simultaneous cleaning of a liquid and a gas includes a centrifugal rotor delimiting in a casing a separation chamber that is arranged for through flow and cleaning of the liquid. On the outside of the casing separation discs are mounted for rotation with the centrifugal rotor. Between the separation discs there are formed axially extending separation passages formed for through flow and cleaning of the gas.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: July 25, 2006
    Assignee: Alfa Laval Corporate AB
    Inventors: Ingvar Hällgren, Leif Larsson, Rolf Ljungtström