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:
Apr. 17, 2018
Filed:
Feb. 19, 2014
Applicant:
Nuovo Pignone Srl, Florence, IT;
Inventors:
Assignee:
Nuovo Pignone Srl, Florence, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 17/10 (2006.01); F04D 29/28 (2006.01); F04D 29/62 (2006.01); B23K 20/12 (2006.01); B23P 15/00 (2006.01); F01D 5/34 (2006.01); B23K 101/00 (2006.01);
U.S. Cl.
CPC ...
F04D 29/284 (2013.01); B23K 20/12 (2013.01); B23P 15/006 (2013.01); F04D 17/10 (2013.01); F04D 29/624 (2013.01); B23K 2201/001 (2013.01); F01D 5/34 (2013.01);
Abstract
A manufacturing technique for impellers for a centrifugal rotating machine is provided. The impeller is made by composition of single vanes pieces that fit to the hub or directly to the rotor shaft by welding, friction welding or a mechanical locking system. The manufacturability of the segments is easy fast and cheap and make it possible to use advanced manufacturing technologies like additive manufacturing of the type of Direct Metal Laser Melting.