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. 06, 2004
Filed:
Nov. 08, 2002
Applicant:
Inventors:
Eugenio Rossi, Viareggio, IT;
Gianluca Rocchi, Florence, IT;
Assignee:
Nuovo Pignone Holdings S.p.A., Florence, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/14 ;
U.S. Cl.
CPC ...
F01D 5/14 ;
Abstract
A cylindrical blade for a rotor of the purely radial type of a centrifugal compressor with a medium flow coefficient comprises a first surface ( ) of the pressure side and a second surface ( ) of the suction side of equal curvature, both having generatrices parallel to the axis (Z) of rotation of the rotor, in which the line ( ) of curvature of the said surfaces ( ) is defined, in a Cartesian reference system, by the ratio between the coordinates of a discrete set of points ( ) belonging to the line and the outer radius (R) of the rotor ( ).