Patents Assigned to Elfi Elektrofilter AB
  • Air filtering system
    Patent number: 7132010
    Abstract: An air filtration system including a filter (4) for separation of particles and an ionizer (3) for ionization of the air. In use of the system, ionization of the air occurs before the air passes the filter (4). The filter (4) is made up of fibers of polypropylene mixed with acrylic.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: November 7, 2006
    Assignees: Scandfilter AB, Elfi Elektrofilter AB
    Inventor: Thomas Carlsson
  • Electrostatic precipitator for air cleaning
    Patent number: 4259093
    Abstract: An electrostatic precipitator for air cleaning wherein the air passes through in two steps: first passing through a charging portion and next through a separation portion. The charging portion includes wires positioned parallel to and between parallel metal sheets, the wires having an electric potential other than that of the metal sheets. The separation portion includes plural parallel metal sheets, each of which has an electric potential other than that of adjacent metal sheets. The charging portion includes two or more wires between each pair of metal sheets, and the metal sheets of the charging portion extend through and constitute some of the metal sheets of the separation portion, between which are disposed addition metal sheets of an odd number.
    Type: Grant
    Filed: December 12, 1978
    Date of Patent: March 31, 1981
    Assignee: Elfi Elektrofilter AB
    Inventors: Antonios Vlastos, Peter Albertsson, Rolf Eriksson
  • Fixing and connecting device for wires and plates in electrostatic filters
    Patent number: 4240811
    Abstract: Fixing and connecting device for wires and plates in electrostatic filter, where the charging section comprises two or more parallel wires between plates and the separation section comprises mutually parallel plates, with the device also comprising a frame consisting of two parallel gables fixed by two identical parallel spacing parts for supporting wires and plates in the charging section and including fore and aft suppporting legs intended to support the plates in the face and aft vertical corners of the separation section.The gables and the supporting legs comprise slits and grooves for positioning wires and plates.According to a preferred embodiment there is a contact strip on each of the aft supporting legs where one of the contact strips connects every other plate in the separation section and the other contact strip connects intervening plates to two separate voltage levels.The device brings about a simple mounting in respect of fixing, positioning and connecting of plates and wires.
    Type: Grant
    Filed: June 12, 1979
    Date of Patent: December 23, 1980
    Assignee: Elfi Elektrofilter AB
    Inventor: Bertil Jacobsson