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:
Nov. 07, 1989
Filed:
May. 20, 1988
Applicant:
Inventor:
David H Evans, Lake Mary, FL (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
416203 ; 416175 ; 416228 ; 416500 ;
Abstract
Within a rotor blade row of a steam turbine, rotor blades having one resonant frequency alternate with rotor blades having a second, different resonant frequency. The two different resonant frequencies are achieved by profiling the tips of every other rotor blade.