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. 28, 2015
Filed:
May. 20, 2010
David A. Spear, Manchester, CT (US);
Dennis N. Kantor, West Simsbury, CT (US);
Bruce P. Biederman, Meridan, CT (US);
John A. Orosa, Palm Beach Gardens, FL (US);
David A. Spear, Manchester, CT (US);
Bruce P. Biederman, Meridan, CT (US);
John A. Orosa, Palm Beach Gardens, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A swept turbomachinery blade for use in a cascade of such blades is disclosed. The blade () has an airfoil () uniquely swept so that an endwall shock () of limited radial extent and a passage shock () are coincident and a working medium () flowing through interblade passages () is subjected to a single coincident shock rather than the individual shocks. In one embodiment of the invention the forwardmost extremity of the airfoil defines an inner transition point () located at an inner transition radius r-inner. The sweep angle of the airfoil is nondecreasing with increasing radius from the inner transition radius to an outer transition radius r, radially inward of the airfoil tip (), and is nonincreasing with increasing radius between the outer transition radius and the airfoil tip.