Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
Schaufelrad mit zwei umlaufenden, gleichachsig gelagerten Beschauflungskraenzen, bei dem die Schaufeln des einen Kranzes gegenueber dem anderen verstellbar sind