Patents Assigned to P.O. Andersson Konstruktionsbyra AB
  • Ventilation arrangement, including filter constructed as sound dampener, flow damper and for filtering purposes
    Patent number: 5766072
    Abstract: A ventilation plant comprising fans for distribution of intake air and exhaust air in branch ducts having openings for the intake air and exhaust air. Tubular filters are sealingly attached to the openings and create a pressure drop of about 200 Pascal, which filters at flow velocities adjusted to about 2-5 m/s are acting also as throttling and sound damping devices of the plant.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: June 16, 1998
    Assignee: P.O. Andersson Konstruktionsbyra AB
    Inventor: Per Otto Andersson