Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 10, 2023
Patent Application Number
17168768
Date Filed
February 5, 2021
Patent Citations Received
Patent Primary Examiner
A turbomachine has a bearing in a bearing compartment. A first seal system isolates the bearing compartment and has: a first runner; a second runner; an inner seal encircling the first runner; and an outer seal encircling the second runner. The inner seal has a static clearance with the first runner. The outer seal has a static clearance with the second runner, greater than the inner seal static clearance. The first runner has an inner portion cantilevered inward. The second runner has an outer portion cantilevered outward.
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