Patent attributes
A segmented intershaft seal assembly for counter-rotating and co-rotating turbine engines is described. The assembly includes a pair of end rings, an annular seal element, and at least one resilient element. At least one end ring has a flange that extends from one side thereof. The flange has a lower annular surface. The seal element includes at least two seal segments. Each seal segment includes a ring segment and a ring flange segment. The ring segment has an upper radial surface. The ring flange segment directly contacts and extends from the upper radial surface forming either a substantially “T”-shaped or “L”-shaped cross section. The seal segments are disposed between the end rings. At least one resilient element biases each seal segment away from the inner shaft so that the upper radial surface contacts the lower annular surface and a portion of the ring flange segment extends beyond the flanges.
