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. 01, 2014
Filed:
Feb. 13, 2009
Farid Mazzouji, Vourey, FR;
Michel Henri Couston, Seyssins, FR;
Jean Bernard Houdeline, Chirens, FR;
Sylvain Lavigne, Eybens, FR;
Claire Segoufin, Grenoble, FR;
Farid Mazzouji, Vourey, FR;
Michel Henri Couston, Seyssins, FR;
Jean Bernard Houdeline, Chirens, FR;
Sylvain Lavigne, Eybens, FR;
Claire Segoufin, Grenoble, FR;
Alstom Renewable Technologies, Grenoble, FR;
Abstract
The invention relates to a wheel (R) of the Francis type that comprises a ring () with revolution symmetry about the rotation axis (Z) of the wheel (R), and curved blades () connected to the ring () and each having an outer peripheral edge () and an inner central edge (). The connection points (B, B) between the ring () and the inner central edges () of the blades () are located on a same circle (C) centered on the axis (Z). The connection points (A, A) between the ring () and the outer peripheral edges () of the blades () are located on at least two distinct circles (C, C) (D, D) centered on the axis (Z).