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:
Mar. 24, 2020
Filed:
May. 13, 2015
Applicant:
Nuovo Pignone Srl, Florence, IT;
Inventors:
Filippo Cappuccini, Florence, IT;
Stefania Stramare, Florence, IT;
Marco Romanelli, Florence, IT;
Marco Anselmi, Florence, IT;
Riccardo Paoletti, Florence, IT;
Alessio Bandini, Florence, IT;
Assignee:
Nuovo Pignone SRL, Florence, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/22 (2006.01); F04D 29/26 (2006.01); F01D 5/34 (2006.01); F01D 25/00 (2006.01); F04D 29/02 (2006.01); B05D 1/12 (2006.01); C23C 4/12 (2016.01); C23C 18/16 (2006.01); C23C 18/32 (2006.01); C23F 11/00 (2006.01); C25D 3/04 (2006.01); C25D 3/12 (2006.01); F04D 29/043 (2006.01); F04D 29/053 (2006.01); F04D 29/28 (2006.01); F04D 29/62 (2006.01);
U.S. Cl.
CPC ...
F04D 29/2294 (2013.01); B05D 1/12 (2013.01); C23C 4/12 (2013.01); C23C 18/1633 (2013.01); C23C 18/32 (2013.01); C23F 11/00 (2013.01); C25D 3/04 (2013.01); C25D 3/12 (2013.01); F01D 5/34 (2013.01); F01D 25/007 (2013.01); F04D 29/023 (2013.01); F04D 29/043 (2013.01); F04D 29/053 (2013.01); F04D 29/266 (2013.01); F04D 29/28 (2013.01); F04D 29/624 (2013.01); F04D 29/628 (2013.01); F05D 2230/90 (2013.01); F05D 2260/95 (2013.01); F05D 2300/132 (2013.01); F05D 2300/16 (2013.01); F05D 2300/17 (2013.01); F05D 2300/171 (2013.01); F05D 2300/611 (2013.01);
Abstract
A method for preventing corrosion of an impeller-shaft assembly of a turbomachine comprises the steps of assembling an impeller on a shaft in order to define an impeller-shaft assembly; plating the assembly by inserting the assembly into a plating bath; and coating at least a first predefined surface on the impeller and a second predefined surface on the shaft wherein the coating step is performed by spraying the predefined surfaces.