Patent ID: 7788832

Claim:
A system for the forced waving of flags for advertising and similar devices comprising a support to support a flag or similar item through a flag waving shaft and also for securing blowing means which release forced air flows that are applied to the flag or a similar element placed on the waving shaft, wherein: the blowing means provide through their outlet laminar air flows; and the flag waving shaft is positioned perpendicularly to the direction of flow of the laminar air flows on an external side of, and close to the outlets of the blowing means, said zone containing flows with no turbulence; and wherein the blowing means comprise a tangential fan with a turbine whose rotation axis runs parallel the flag waving shaft positioned between an external careening convex outwards and an interference body with a section concave outwards, the respective free ends of such external careening and of such interference body delimiting such air outlet contained in a plane perpendicular to the direction of the air flow through such outlet; and the flag waving shaft lies vertically parallel to the turbine axis in the outer vicinity of the concave section of such interference body.