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:
May. 22, 2012
Filed:
Jul. 16, 2009
Serge Prigent, Le Sappey en Chartreuse, FR;
Serge Prigent, Le Sappey en Chartreuse, FR;
ALSTOM Hydro France, Levallois Perret, FR;
Abstract
The device () serves to separate solid particles from the water of a flow (E) feeding a hydraulic machine of the turbine, pump, or turbine-pump type. The device has flow inlet and outlet zones () for the flow that are spaced apart along an advance axis (X) of flow advance through the device (). The device () comprises a plurality of ducts () placed in parallel, each having a mouth and a downstream end between the inlet zone () and the outlet zone (). In section perpendicular to the advance axis (X), each duct presents a section in the form of a spiral with a radius of curvature that increases from the mouth towards the downstream end or from the downstream end towards the mouth, with each duct () presenting a thickness measured in a generally radial direction relative to the advance axis that is less than 10% of the width (l) of said duct, measured parallel to said axis (X).