Patents Assigned to Howden Netherlands B.V.
  • Axial fan
    Patent number: 7771168
    Abstract: The invention relates to an axial fan comprising a boss and a number of blades evenly distributed and arranged to the boss, wherein the blades have an aerofoil profile, each blade is arranged to the boss with a strip, wherein each blade is hollow and the strip is at least partially inserted into the blade, and that at least one fastener runs from the surface of the blade through a corresponding opening in the strip to the opposite surface of the blade, wherein the corresponding opening in the strip is a slot, such that the pitch of the blade is adjustable, by rotation of the blade relative to the strip along the axial axis of the blade.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: August 10, 2010
    Assignee: Howden Netherlands B.V.
    Inventors: Henricus Johannes Bernardus Olthof, Giorgio Cipelletti, Hendrik Fedde Van Der Spek
  • Axial fan
    Publication number: 20080031726
    Abstract: The invention relates to an axial fan comprising a boss and a number of blades evenly distributed and arranged to the boss, wherein the blades have an aerofoil profile, each blade is arranged to the boss with a strip, wherein each blade is hollow and the strip is at least partially inserted into the blade, and that at least one fastener runs from the surface of the blade through a corresponding opening in the strip to the opposite surface of the blade, wherein the corresponding opening in the strip is a slot, such that the pitch of the blade is adjustable, by rotation of the blade relative to the strip along the axial axis of the blade.
    Type: Application
    Filed: April 11, 2007
    Publication date: February 7, 2008
    Applicant: HOWDEN NETHERLANDS B.V.
    Inventors: Henricus Bernardus Olthof, Giorgio Cipelletti, Hendrik Fedde Van Der Spek