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:
Jul. 17, 2012
Filed:
Apr. 08, 2008
Applicants:
Ralf Greim, Birmenstorf, CH;
Said Havakechian, Baden, CH;
Ivan Mcbean, Nussbaumen, CH;
Simon-pierre Monette, Baden, CH;
Inventors:
Ralf Greim, Birmenstorf, CH;
Said Havakechian, Baden, CH;
Ivan McBean, Nussbaumen, CH;
Simon-Pierre Monette, Baden, CH;
Assignee:
Alstom Technology Ltd, Baden, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/14 (2006.01); F01D 1/02 (2006.01); F01D 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A blade of a turbomachine, especially of a steam turbine, is characterized in that the chord length (s) in the middle region of the blade airfoil is shorter than the chord lengths (s, S) in the tip-side region or root-side region of the blade airfoil. As a result of this, a distribution of a Zweifel parameter over the longitudinal extent of the blade airfoil is achieved which minimizes the losses of a blade cascade of the blades.