Patent ID: 7931407

Claim:
A system for supplying oil from an oil source to a bearing assembly, the bearing assembly including a cage having a forward rail and an aft rail, and at least one bearing disposed therebetween, the system comprising: a forward ring having an inner surface, an outer surface, a distribution annulus, a first plurality of axial channels, a first plurality of radial holes, an annular well, and a first annular dam, the distribution annulus, the first plurality of axial channels, the annular well, and the first annular dam formed on the forward ring inner surface, the first annular dam formed adjacent the annular well, the first plurality of axial channels extending axially between the distribution annulus and the annular well, and each radial hole of the first plurality of radial holes extending between a corresponding axial channel and the forward ring outer surface and configured to provide a portion of the oil to the forward rail; and an aft ring having a forward face disposed adjacent the forward ring, the aft ring having an inner surface, an outer surface, a second plurality of axial channels, a plurality of radial face slots, and a second plurality of radial holes, the second plurality of axial channels extending along a length of the aft ring inner surface and configured to receive oil from the first annular dam, the plurality of radial face slots formed in the forward face and configured to supply a portion of the oil from a first portion of the second plurality of axial channels to the bearing, and each radial hole of the second plurality of radial holes extending from a corresponding axial channel to the aft ring inner surface to the outer surface and configured to provide a portion of the oil from a second portion of the second plurality of axial channels to the aft rail.