Patent ID: 8430122

Claim:
A hydraulic storage tank system comprising: a storage tank defining a reservoir for storing hydraulic fluid; a contaminant containment chamber including a boundary wall positioned within the storage tank radially bounding a cavity of the contaminant containment chamber and a contaminant containment chamber outlet fluidly communicating the cavity with a portion of the reservoir surrounding the contaminant containment chamber, the contaminant containment chamber outlet being radially inward from the boundary wall; a tube defining a discharge passage operably fluidly connecting the cavity of the contaminant containment chamber with a supply of return fluid; the tube including an outlet dispensing return fluid into the contaminant containment chamber; and wherein the outlet of the tube directs the return fluid in an angular direction about and radially spaced outward from a central axis defined by the contaminant containment chamber outlet, the outlet of the tube being positioned vertically below the contaminant containment chamber outlet such that the return fluid flows vertically upward from the outlet of the tube to the contaminant containment chamber outlet.