Air flotation bar for use in floating and drying continuous webs of material in a dryer using dimensionally enlarged air bars. Air flows through three Coanda air slots to provide an air flow distributed over a large area of a passing web to maintain heat transfer capabilities and flotation capabilities....http://www.google.de/patents/US4901449?utm_source=gb-gplus-sharePatent US4901449 - Tri-flotation air bar
