Patent ID: 8764407

Claim:
A fluid level control mechanism comprising: a reservoir assembly, a flow line assembly, a resilient force assembly, an upper centralizer, and a lower centralizer; said reservoir assembly comprising a cylindrical outer float tube and a cylindrical inner float tube, wherein an upper portion of the outer float tube is connected to an upper portion of the inner float tube by an upper end plate disposed between the outer and inner float tubes and a lower portion of the outer float tube is connected to a lower portion of the inner float tube by a lower end plate disposed between the outer and inner float tubes, wherein the upper end plate has at least one hole; said flow line assembly positioned below the reservoir assembly and comprising a main flow line capable of passing a fluid therethrough, a diverter flow line in fluid communication with the main flow line, and a diverter valve disposed within the diverter flow line, wherein the diverter valve is connected to the lower end plate of the reservoir assembly via a lever arm; said resilient force assembly positioned above the reservoir assembly, wherein an upper portion of the resilient force assembly is attached to the main flow line, a lower portion of the resilient force assembly is attached to the reservoir assembly, and the resilient force assembly comprises at least one resilient device capable of exerting a vertical force against the reservoir assembly; wherein the reservoir assembly is disposed along a length of the main flow line and capable of sliding movement along the length of the main flow line, wherein a downward movement of the reservoir assembly opens the diverter valve and an upward movement of the reservoir assembly closes the diverter valve; and wherein the lower centralizer is positioned along the main flow line below the flow line assembly and the upper centralizer is positioned along the main flow line above the resilient force assembly, wherein the upper and lower centralizers each have a diameter larger than the reservoir assembly.