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:
May. 04, 2010
Filed:
Nov. 29, 2006
Roger E. Paolillo, Vernon, CT (US);
Ioannis Alvanos, West Springfield, MA (US);
Cheng-zhang Wang, Glastonbury, CT (US);
Roger E. Paolillo, Vernon, CT (US);
Ioannis Alvanos, West Springfield, MA (US);
Cheng-Zhang Wang, Glastonbury, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A gas turbine engine is provided with turbine sealing structures including knife edge seals which extend at an angle relative to an axial center line of the engine. Each knife edge seal is associated with a concave pocket defined between a radially inner surface and a spaced radially outer surface. The concave pockets and their associated knife edge seals create a pair of vortices which prevent leakage into radially inner portions of the turbine section.