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:
Aug. 18, 2009
Filed:
Jul. 01, 2005
Applicants:
Douglas David Dierksmeier, Franklin, IN (US);
Tab Michael Heffernan, Plainfield, IN (US);
Inventors:
Douglas David Dierksmeier, Franklin, IN (US);
Tab Michael Heffernan, Plainfield, IN (US);
Assignee:
Allison Advanced Development Company, Indianapolis, IN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
An active blade clearance control system for a gas turbine engine. The clearance between the tip of a rotatable blade and an inner surface of a blade track is adjusted by moving the blade track relative to the tip of the blades. A split control ring is manipulated to adjust tension therein and a resulting force is transmitted to an inner member. The plurality of blade tracks are coupled to the inner member and move in response to the force transmitted from the split control ring.