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:
Jul. 25, 2017
Filed:
Jun. 18, 2015
Applicant:
United Technologies Corporation, Hartford, CT (US);
Inventor:
Robert J. Morris, Portland, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 27/04 (2006.01); F01D 25/16 (2006.01); F16C 19/52 (2006.01); F01D 25/18 (2006.01); F16F 15/02 (2006.01); F16F 9/30 (2006.01); F16C 35/077 (2006.01); F16C 19/16 (2006.01); F16C 27/06 (2006.01);
U.S. Cl.
CPC ...
F01D 25/164 (2013.01); F01D 25/18 (2013.01); F16C 19/527 (2013.01); F16C 27/045 (2013.01); F16F 9/30 (2013.01); F16F 15/02 (2013.01); F05D 2220/32 (2013.01); F05D 2240/50 (2013.01); F16C 19/163 (2013.01); F16C 27/066 (2013.01); F16C 35/077 (2013.01); F16C 2360/23 (2013.01);
Abstract
A damping treatment is applied to the ligaments of a squirrel cage type bearing support. The damping treatment reduces the vibrations transmitted to the engine casing as the engine passes through various resonance frequencies of the various parts of the gas turbine engine. A squeeze-film damper damps engine vibrations, but the oil in the squeeze-film damper can act as a stiffener during certain operational ranges, which increases the transmission of vibrations to the engine structure. Applying a damping treatment to the ligaments of the squirrel cage provides effective vibration damping.