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. 03, 1991
Filed:
Nov. 22, 1989
Applicant:
Inventors:
Alec G Dodd, Derby, GB;
Terence R Pellow, Watford, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
4151733 ;
Abstract
The low pressure turbine of a gas turbine engine has an array of rotor blades and a shroud which surrounds the blade tips. The shroud is made up of a plurality of segments which are pivotally mounted from the turbine casing at their midpoints. The upstream portions of the shroud segments are fixed to the casing so that localised cooling of the casing in the region of pivotal attachment of the shroud segments causes the shroud segments to tilt and thereby improve the gas seal between the tips of the rotor blades and the shroud segments.