Centrifugal oil filter

Claim 1

In a gas turbine engine a centrifugal filter assembly for removing contaminant particles from lubricating oil comprising: a hollow shaft rotatably mounted in a gear box of the gas turbine engine, said hollow portion being axially divided into separate input and output passageways; a cylindrical member closed at one end to form an interior chamber removably mounted on the shaft for rotation therewith; a disc shaped gear fixed to the shaft for rotation therewith and removably secured to the cylinder member in a position causing a side face of the gear to form a closure for the interior chamber, said gear being operatively associated with a gear train of the gear box to rotatably drive the shaft; and a disc concentric with and fixedly secured to said shaft for rotation therewith, said disc being radially disposed within said chamber to divide said chamber into radially extending first and second channels and being spaced from the circumferential periphery thereof, to allow communication between said channels over the edge of the disc, said shaft openings connecting said input and output passageways with the first and second channels respectively in order to direct the flow of lubricating oil, in turn, from said input passageway radially outward, past the annular collection zone, and then radially inward to the output passageway.