Patent ID: 6394766
Filing Date: 2002-05-28
Classification: F04D

Abstract:
A fan apparatus, comprising:a housing; a fan blade assembly in the housing; a motor connected to the fan blade assembly for driving the fan blade assembly; and an adjustable vane assembly connected to the housing for controlling a width of wind generated by the fan blade assembly, wherein the adjustable vane assembly comprises a flat circular track movably attached to an interior circumference of the housing, a plurality of teeth on the track, at least one primary gear disposed on the track for moving the track, a plurality of secondary gears disposed on the track, said plurality of secondary gears move with the track when the track is moved by the at least one primary gear, and an adjustable vane connected to each secondary gear and extending in a direction toward a center of the housing, said adjustable vane rotates in response to movement of the secondary gear.