Bladeless fan

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The Dyson Air Multiplier

A "bladeless" fan U.S. Patent 8,454,322 blows air from a ring with no external blades. Its blades are hidden in its base. Dyson claims that bladeless fans produce a more constant airflow than traditional fans.[1]

The air is drawn in by a fan in the base and then directed up into a ring. It comes out of a crack all around the ring and passes over a shape like that of an aircraft wing. Industrial designer Sir James Dyson named his fan the Air Multiplier.[2]

Dyson sued Chinese companies because they began selling bladeless fans for much less than Dyson.[3] The Chinese responded that Dyson can not patent an invention that has already been invented, that Toshiba invented the fan in 1981 and its patent expired after 20 years.[4]

References[edit]

  1. ^ Samiljan, Tom (2009-10-12). "James Dyson Explains How New Bladeless 'Air Multiplier' Fan Works". Switched.com. Retrieved 2014-01-09. 
  2. ^ "Sir James Dyson explains his bladeless fan". YouTube. Retrieved 2014-01-09. 
  3. ^ Dan Milmo. "Dyson seeks to block copycat manufacturers in China". The Guardian. Retrieved 2014-01-09. 
  4. ^ "Dyson fan: was it invented 30 years ago?". Telegraph. Retrieved 2014-01-09.