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. 01, 2013
Filed:
Jun. 29, 2010
Leo V Lewis, Kenilworth, GB;
Bengt E G Blidmark, Madrid, ES;
Leo V Lewis, Kenilworth, GB;
Bengt E G Blidmark, Madrid, ES;
Rolls-Royce PLC, London, GB;
Abstract
Some embodiments control rotor blade over-tip leakage of a working fluid in a rotating machine, which includes a circumferential row of rotor blades. A circumferential row of seal segments seal with the radially outer tips of the rotor blades to reduce over-tip leakage of the working fluid. The seal segments have an inboard abradable layer adapted to be abraded by the blade tips to form a wear track for the blade tips. Tip wearing bodies are adapted to wear down the blade tips. The abradable layer thickness and cold build radial positions of the blade tips, seal segments, and tip wearing bodies are arranged such that, during running-in of the machine, a wear track having a uniform radius is formed in the abradable layer by the blade tips, and the tip wearing bodies wear down the blade tips to provide a uniform blade tip radius.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile