FLEXXAIRE MANUFACTURING INC.
|FLEXXAIRE MANUFACTURING INC. Patent applications|
|Patent application number||Title||Published|
|20090196747||COMPACT VARIABLE PITCH FAN - A compact variable pitch fan has a hydraulic pitch change mechanism. A pitch change piston is constrained to follow reciprocating motion under hydraulic control within a peripheral hub from which fan blades extend outward. An additional feature is the use of separated guiding and seal surfaces. A still further feature is the use of a pitch sensor, particularly on the hydraulic line leading to the variable pitch fan.||08-06-2009|