Patent ID: 7883438
Filing Date: 2011-02-08
Classification: F01D,F05D,F16C,F16H

Abstract:
1. An epicyclic gear set comprising: a sun gear; a plurality of planet gears arranged around and driven by the sun gear; and a plurality of support shafts each associated with one of the plurality of planet gears, wherein each of the plurality of support shafts has a primary oil flow path for supplying oil during driven gear operation and a secondary oil flow path for supplying the oil when the sun gear is not driving the plurality of planet gears, wherein the primary oil flow path and the secondary oil flow path are non-parallel and non-perpendicular to each other, wherein the oil within the primary oil flow path is supplied from a first oil source, and the oil within the secondary oil flow path is supplied from a second oil source, wherein the first oil source is different from the second oil source.