Continuous centrifugal filter for various filtering and automatic coffee making
AssigneesSociete Normande de Services, Agence Nationale de Valorisation de la Recherche (ANVAR), Societe Generale pour le Financement de l'Innovation Soginnove, Bertrand Cor, Arnaud Gastinne
InventorSerge Cailliot
Life of this patent
Estimating the term…
Abstract
Continuous centrifugal filtering device for precipitation, washing or draining. The rotative cylindrical sleeve is constituted of a helical winding with continuous coils of a long strip mounted in a rotative case including cylindrical rollers engaging the exterior of the cylndrical sleeve, and driven in rotation at slow speed, all in the same direction. The strip forming the cylindrical sleeve is looped in an endless assembly by a return coil which extends from one extremity to the other of the helical winding so that the porous cylindrical sleeve thus formed advances slowly axially renewing itself constantly. The device can be used for making coffee.
Claims13
A centrifugal separator comprising a support assembly comprising plural guide rods, endless band means on said support assembly, said endless band means being sufficiently stiff to provide means for positioning a helically wound wall portion entirely within said guide rods, a such helically wound wall portion defining a separator, and a return portion mounted around said rods and extending along a generally helical path between the ends of said helically wound wall portion, said guide rods being rotatably mounted on said support assembly and circumferentially spaced around and engaging said helically wound wall portion of said band, combined drive means for driving the entire support assembly in rotation about the central axis of said assembly and for simultaneously driving at least one of said plural guide rods so as to revolve said helical wall portion relative to said support and provide movement of said band relative to said support along said helical path, generally about the central axis of said assembly to thereby cause continuous unwinding of the band from one end of the helical wall portion and rewinding of the band at the other end of the helical wall portion, said combined drive means being designed so that said rotation is substantially faster than said movement of said band along said helical path.
Dependencies are inferred from the claim text.