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:
Oct. 06, 2020
Filed:
Sep. 14, 2017
Applicant:
Rolls-royce Corporation, Indianapolis, IN (US);
Inventors:
Grace Aker, Indianapolis, IN (US);
Alex Ertman, Indianapolis, IN (US);
Jonathan Acker, Westfield, IN (US);
Assignee:
Rolls-Royce Corporation, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 17/16 (2006.01); F01D 25/24 (2006.01); F04D 29/56 (2006.01);
U.S. Cl.
CPC ...
F01D 17/162 (2013.01); F01D 25/24 (2013.01); F04D 29/563 (2013.01); F05D 2230/10 (2013.01); F05D 2230/60 (2013.01); F05D 2240/12 (2013.01); F05D 2240/14 (2013.01); F05D 2240/50 (2013.01); F05D 2260/79 (2013.01);
Abstract
The bearing surface between a thrust bushing and a boss/or face is increased with the addition of a ring or tab that extends radially into a casing bore configured to receive a bushing and cooperating spindle of a variable stator/guide vane. The addition of the ring adds additional bearing surface area without increasing the size of the vane penny, reducing spindle diameter or reducing the bushing bore diameter.