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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 |