Flexxaire Inc

Flexxaire Manufacturing Inc.

George Antoszko

Jonathan Edwards McCallum

Jonathan E Mccallum

Kevin John Dewar

Terry Dean Nelson

Andrew Louis Norell

Brendan Anthony Romano

Andrew L Norell

Cameron Dean Westbrook

Peter Knight

Mariusz Kloza

Cameron D Westbrook

Kevin J Dewar

Brendan A Romano

Terry D Nelson

A fan blade is mounted on a shaft or arranged to vary in pitch via rotation about a pitching axis. The fan blade is mounted with a center of mass offset from the shaft or pitching axis. This offset reduces torque around the shaft or pitching axis.

Blade for a variable pitch fan

A compact variable pitch fan has a drive fluid pitch change mechanism. A pitch change piston is constrained to follow reciprocating motion under drive fluid control within a peripheral hub from which fan blades extend outward. A pitch change sensor is mounted with the rotary union.

Variable pitch fan having a pitch sensor

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.

Compact variable pitch fan

Growing community of inventors

Edmonton, Canada

George Antoszko