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:
Dec. 30, 2008
Filed:
Jul. 13, 2006
Paul Huber, Laval, CA;
Andre Coutu, Boucherville, CA;
Eric Theroux, Les Cedres, CA;
Julien Morin, Laval, CA;
Mario Hamel, Pierrefonds, CA;
Paul Huber, Laval, CA;
Andre Coutu, Boucherville, CA;
Eric Theroux, Les Cedres, CA;
Julien Morin, Laval, CA;
Mario Hamel, Pierrefonds, CA;
General Electric Canada, Mississauga, CA;
Abstract
A split runner for a Francis turbine has runner segments that are adapted to be joined together along confronting surface portions thereof to form a composite runner having a crown, a band and a plurality of blades extending between the crown and the band. The confronting surface portions of the runner segments are located only along portions of the crown and portions of the band, and the confronting surface portions of the runner segments are located in between and spaced from adjacent blades of the composite runner. Since the confronting surface portions are located only along portions of the crown and portions of the band, none of the blades are split eliminating the need to weld together blades during formation of the composite runner. Accordingly, the composite runner does not have weld joints formed in the blades which are highly stressed operating parts of the runner.