Patent 10287981 was granted and assigned to United Technologies on May, 2019 by the United States Patent and Trademark Office.
One exemplary embodiment of this disclosure relates to a gas turbine engine. The engine includes a compressor section, a combustor section, a turbine section, and at least one rotatable shaft. The engine further includes a bearing assembly including an inner race, an outer race, and a plurality of rolling elements. A seal assembly is also included. The seal assembly includes a seal plate mounted for rotation with the rotatable shaft. The seal plate establishes a boundary of a tortuous passageway.