Patent ID: 8210200
Filing Date: 2012-07-03
Classification: F03B,F05B,F23N,G05D,Y02E,Y10T

Abstract:
1. A device for regulating fluid flow comprising (a) a stationary duct having a first end and a second end, said duct defining a path for fluid flow therethrough from said first end to said second end; (b) a movable member having a forward end essentially similarly shaped and sized to the first end of the duct, said forward end being spaced apart from said first end to form an opening through which fluid can enter the duct, with the member being movable relative to the duct between a fully retracted position where the opening is at a maximum size and a forward position at which the forward end is adjacent to said first end and the opening is at a minimum size or is closed, and all positions intermediate, wherein the movement of the member is controlled by the movement of a float located within the duct which is impacted by the flow of fluid through the duct; (c) a pneumatic cylinder that applies a force on the float and movable member in the direction opposite the movement of fluid through the flow regulator, said pneumatic cylinder being adjustable during the operation of the flow regulator.