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:
Feb. 14, 2017
Filed:
Jul. 20, 2012
Applicants:
Giuseppe Iurisci, Florence, IT;
Riccardo Brogelli, Florence, IT;
Inventors:
Giuseppe Iurisci, Florence, IT;
Riccardo Brogelli, Florence, IT;
Assignee:
Nuovo Pignone SPA, Florence, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 11/02 (2006.01); F04D 29/16 (2006.01); F01D 5/04 (2006.01);
U.S. Cl.
CPC ...
F01D 11/02 (2013.01); F01D 5/043 (2013.01); F04D 29/162 (2013.01);
Abstract
A centrifugal turbomachine comprising a casing, a rotor assembly comprising at least one centrifugal impeller for a fluid flowing from an inlet side to an outlet side of the impeller, and an eye seal extending between an impeller eye of the centrifugal impeller and the casing for preventing the fluid from leaking between the casing and the centrifugal impeller, wherein the eye seal comprises at least a first portion toward the inlet side and a last portion toward the outlet side of the impeller, the last portion being smaller in diameter than the first portion.