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:
Jun. 27, 1978
Filed:
Jan. 06, 1977
Applicant:
Inventor:
Mark R Kulina, Franklin Lakes, NJ (US);
Assignee:
Curtiss-Wright Corporation, Wood-Ridge, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
416175 ; 416228 ; 416500 ;
Abstract
A rotor for compressors, turbines or the like and having a plurality of circumferentially-spaced blades in which every other blade is modified so that the average natural frequency of said modified blades differs from that of the other blades by at least 4% but by no more than 15% so as to reduce the maximum amplitude of turbine blade vibration.