F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
123/169, 230/3,
F04D 23/00 (2006.01)
Patent
CA 2009970
TITLE: VARIABLE PITCH FAN INVENTOR: CLARENCE ISERT ABSTRACT A fan assembly has variable pitch blades adjustable from outside the assembly while the fan is operating so as to alter the volume and direction of the induced airflow. The fan blades have an airfoil configuration such that air is moved by the fan in either direction with equal inefficiency. The fan assembly includes a non rotating secondary shaft axially moveable in a main shaft. The secondary shaft has a spider interconnected with the crank arms of the blade arms by a snugly fitted universal joint assembly. The airfoil configuration of the blades is neutral and the blades are straight. The fan assembly is lubricated by a pick-up non-rotatably mounted in a reservoir formed by the pulley hub and blade hub. The pick-up feeds lubrication directly to the bearing assemblies on which the spider and pulley hub are mounted.
Flexxaire Manufacturing Inc.
Isert Clarence
Lambert Anthony R.
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