Abstract: A segment of a seal assembly for sealing a higher pressure area from a lower pressure area is disclosed. The segment comprises a radial external surface, a radial internal surface for sealing against a rotating member, a transverse groove for maintaining a pressure around portions of the segment, and one or more pads including a scooping groove. The scooping groove is positioned at or in proximity to an edge of the transverse groove and provides for a transition flow between the one or more pads and the transverse groove.

Abstract: A segment of a seal assembly for sealing a higher pressure area from a lower pressure area is disclosed. The segment comprises a radial external surface, a radial internal surface for sealing against a rotating member, a transverse groove for maintaining a pressure around portions of the segment, and one or more pads including a scooping groove. The scooping groove is positioned at or in proximity to an edge of the transverse groove and provides for a transition flow between the one or more pads and the transverse groove.

Abstract: An improved rolling element bearing assembly is provided which is particularly applicable for use in gas turbine engine gearboxes. The rolling element bearing includes an inner ring mounted to a rotatable shaft and an outer ring mounted to a stationary structure. The inner and outer rings define a raceway for a plurality of rolling elements. The rolling element bearing assembly includes the bearing and a compliant anti-rotation ring compressed between the bearing outer ring and the stationary structure. The compliant ring provides improved frictional engagement and improved bearing damping between the bearing outer race and the stationary structure preventing outer ring rotation within the stationary housing.

Abstract: A composite seal rotor is provided for sealing between the rotating components of a gas turbine engine held together by the compressive force of a lockup assembly and a housing circumscribing the rotating components and having carbon face seals mounted thereto. The seal rotor is comprised of a metal base portion disposed between two of said rotating components for transmitting said compressive force therethrough, and a ceramic surface for sealingly engaging said carbon face seal.