Patent ID: 9458923
Filing Date: 2016-10-04
CPC Classification: B64C,B64D,F16H

Claim Text:
1. A lubrication system for a gearbox, the lubrication system comprising: a reserve housing configured to retain a lubrication fluid; a supply line in fluid communication with the reserve housing, the supply line configured to provide pressurized lubrication fluid to the reserve housing; an overflow tube directly coupled between the reserve housing and the gearbox, the overflow tube having an overflow entry port and an overflow exit port, the overflow tube being configured to prevent a volume of the lubrication fluid in the reserve housing from exceeding a predefined level; and a metering jet coupled to the reserve housing adjacent the overflow tube being configured to allow the lubrication fluid to flow from the reserve housing onto a component in the gearbox at a predetermined rate, the metering jet metering the flow of lubrication fluid through at least one orifice, the metering jet filtering contaminants from the lubrication fluid and providing passive filtration and flow of lubrication fluid; wherein the metering jet provides flow of the lubrication fluid onto the component for a period of time subsequent to a cessation of flow of the lubrication from the supply line to the reserve housing; wherein the metering jet includes an exit port on a lowest surface of the metering jet relative to the predefined level in the reserve housing, the exit port being configured to allow the lubrication fluid to exit the metering jet; wherein the overflow exit port is located below the overflow entry port; wherein the overflow exit port is configured to allow the lubrication fluid to flow from the reserve housing directly into the gearbox; and wherein the overflow tube is configured to act as a vent to allow air to exchange between an interior of a gearbox housing and the interior of the reserve housing.