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. 17, 2022
Filed:
Oct. 20, 2014
Applicant:
Nuovo Pignone Srl, Florence, IT;
Inventors:
Assignee:
NUOVO PIGNONE SRL, Florence, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/32 (2006.01); F01D 5/30 (2006.01); F01D 11/00 (2006.01); F01D 5/14 (2006.01); B23C 3/18 (2006.01); B23H 9/14 (2006.01); F01D 5/02 (2006.01); F01D 5/12 (2006.01);
U.S. Cl.
CPC ...
F01D 5/3069 (2013.01); B23C 3/18 (2013.01); B23H 9/14 (2013.01); F01D 5/021 (2013.01); F01D 5/12 (2013.01); F01D 5/14 (2013.01); F01D 5/147 (2013.01); F01D 5/3038 (2013.01); F01D 11/006 (2013.01); F01D 11/008 (2013.01); F01D 25/32 (2013.01); B23C 2215/44 (2013.01); F05D 2220/31 (2013.01); F05D 2230/10 (2013.01); F05D 2230/12 (2013.01); F05D 2230/51 (2013.01); F05D 2230/53 (2013.01); F05D 2300/10 (2013.01); F05D 2300/431 (2013.01);
Abstract
A method for manufacturing a stage of a steam turbine comprising the steps of milling a block of material to define a sector having a plurality of blades, each blade having an external surface; machining an opening in the external surface of at least one of the blades; machining a cavity in fluid communication with the opening; the step of machining the cavity being performed by wire electric discharge machining.