Patent ID: 8491267

Claim:
A gas turbine engine rotary assembly comprising: a first component mounted for rotation about an axis of the gas turbine engine, a second component mounted on said first component, a retaining ring received in a circumferential groove defined in a radially outer surface of the first component, the retaining ring providing an axially facing shoulder for axially retaining the second component onto the first component, the retaining ring having at an inner diameter thereof a radially inner surface defining a plurality of circumferentially spaced-apart grooves for engagement with at least one anti-rotation lug projecting from one of said first and second components, thereby restraining the retaining ring against rotation relative to said one of the first and second components, the retaining ring having a split ring body which is spring-loaded radially inwardly at said inner diameter against a circumferential seat provided on a radially outer surface of one of said first and second components, and an outer sleeve surrounding the split ring body to limit radial expansion of the split ring body and thereby prevent disengagement of the anti-rotation lug from the split ring body as a result of centrifugal forces transferred to the retaining ring during gas turbine engine operation.