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. 15, 2009
Filed:
Apr. 14, 2006
Thomas Wunderlich, Rangsdorf, DE;
Peter Broadhead, Derby, GB;
Thomas Wunderlich, Rangsdorf, DE;
Peter Broadhead, Derby, GB;
Rolls-Royce Deutschland Ltd & Co KG, Blankenfelde-Mahlow, DE;
Abstract
A passive internal control system for rotor blade tip clearance of a high-pressure turbine is based on inner rings that expand in a radial direction under the influence of heat and radially adjust the clearance delimited by liner segments () on the casing side. It comprises a radially expandable U-shaped downstream inner ring () mounted to inner platforms () of guide vanes () on a side where the rotor does not have a static bearing, said ring providing expansion compensation in the axial and peripheral directions and forming a torsion box () with struts () that absorbs rolling and tilting moments.