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:
Sep. 21, 2021
Filed:
Mar. 18, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/16 (2006.01); F01D 25/04 (2006.01); F16C 27/04 (2006.01); F16F 15/023 (2006.01);
U.S. Cl.
CPC ...
F01D 25/164 (2013.01); F01D 25/04 (2013.01); F16C 27/045 (2013.01); F16F 15/0237 (2013.01); F05D 2220/32 (2013.01); F05D 2240/54 (2013.01); F05D 2260/96 (2013.01); F16C 2360/23 (2013.01); F16F 2222/12 (2013.01); F16F 2230/22 (2013.01); F16F 2230/30 (2013.01);
Abstract
A multi-film oil damper has an annular damper cavity defined within a housing between a radially outward wall, a first radially extending side wall and a second radially extending side wall. Nested damper rings are disposed within the annular damper cavity for defining squeeze film annuli therebetween. The squeeze film annuli are fluidly connected in parallel to an inlet gallery.