The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2021
Filed:
Jul. 22, 2019
Applicant:
Rolls-royce Corporation, Indianapolis, IN (US);
Inventor:
John Munson, Indianapolis, IN (US);
Assignee:
Rolls-Royce Corporation, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/447 (2006.01); F04D 29/10 (2006.01); F01D 11/02 (2006.01); F01D 5/02 (2006.01); F16J 15/44 (2006.01);
U.S. Cl.
CPC ...
F16J 15/4476 (2013.01); F01D 5/026 (2013.01); F01D 11/02 (2013.01); F04D 29/102 (2013.01); F16J 15/441 (2013.01); F05D 2240/55 (2013.01); F05D 2240/61 (2013.01); Y02T 50/60 (2013.01);
Abstract
An intershaft seal assembly comprises an annular seal ring disposed between a pair of annular runners connected to a hollow outer rotating shaft, and a surface of a co-axial inner rotating shaft. The centrifugal force resulting from rotation of the hollow outer rotating shaft effects engagement of the annular seal ring with the surface of the co-axial inner rotating shaft. The surface may be a radially-inward-facing surface of a retaining arm connected to the co-axial inner rotating shaft.