Patent ID: 8017010

Claim:
A device for filtering a molten material, said device comprising: a housing; a feed channel; a discharge channel; backflow channels; and a filter slide slidably arranged in said housing, said filter slide having at least two filter chambers, each filter chamber having a filter element; wherein said feed channel subdivides into split-feed channels that correspond in number to a number of said filter chambers, each split-feed channel having an orifice that opens into a corresponding one of said filter chambers, each split-feed channel having a minor diameter d 1 at said orifice and a major diameter d 2 of said split-feed channel, said minor diameter being smaller than said major diameter; and wherein, said filter slide is slidably movable in a direction transverse to a direction of flow of said molten material so as to selectively allow flow of said molten material from said orifice of said split-feed channel through said respective filter chamber to said discharge channel.