Patent ID: 8727843

Claim:
A self-powered flow control apparatus, said flow control apparatus comprising: a casing having an interior section defined by a plurality of walls, wherein said casing is to be positioned within a fluid flow stream the casing having a divider to create paths of fluid flow; at least one louver positioned within the interior section, wherein the at least one louver is rotatable about an axis, said axis extending along a plane that is perpendicular to a direction of flow of the fluid flow stream; a fluid flow-driven electrical generator having a rotating element positioned within the interior section substantially along the plane such that the at least one louver and the rotating element are in different ones of the paths of fluid flow through the interior section of the casing, wherein said fluid flow-driven electrical generator is to generate an output current when the rotating element is sufficiently driven by a fluid flow stream flow through the generator; a motor coupled to the at least one louver, wherein said motor is to vary a position of the at least one louver to change a resistance to flow of the fluid through the interior section in response to receipt of a control signal; and a controller to generate and provide the control signal to the motor.