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. 08, 2012
Filed:
May. 04, 2009
Applicants:
Loc Q. Duong, San Diego, CA (US);
Shiv C. Gupta, San Diego, CA (US);
Xiaolan HU, San Diego, CA (US);
Inventors:
Loc Q. Duong, San Diego, CA (US);
Shiv C. Gupta, San Diego, CA (US);
Xiaolan Hu, San Diego, CA (US);
Assignee:
Hamilton Sundstrand Corporation, Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 11/00 (2006.01); B64C 11/04 (2006.01); B63H 1/26 (2006.01); B63H 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gas turbine engine includes a radial compressor having first and second blades. The first blade has a tuned leading edge that prevents either blade from exciting at a natural frequency at speeds within an expected operating speed range.