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:
Jul. 16, 1985
Filed:
Jan. 31, 1985
Wilfred H Wilkinson, Turnditch, GB;
Rolls-Royce Limited, London, GB;
Abstract
To minimize leakage of high pressure compressor air from the high pressure side of an aixal flow compressor rotor back to the low pressure side by the outside of a ring of shroud segments, the shroud segments, or at least their front and rear edge portions, are made relatively thin and springy and are retained to a carrier ring so that those edge portions are held sprung against circumferentially extending sealing lands on the supporting structure. It is arranged that the bending in the shroud segments is effective to accommodate predetermined manufacturing tolerances in the shroud segments and the supporting structure, thus avoiding unwanted clearances at the sealing lands. Alternatively, or in addition, the bending can accommodate reductions in bending due to differential expansion between the components during operation of the compressor rotor at elevated temperatures.