An intermittent-action apparatus for filtering liquid has a sealed casing (1) in which a hollow cylinder (8) is mounted so as to define with the casing (1) an annular space (9) communicating with a system for removing precipitate. A driven drum (12) is provided in the upper part of the casing (1), and...http://www.google.es/patents/US4839047?utm_source=gb-gplus-sharePatente US4839047 - Intermittent-action apparatus for filtering liquid
Intermittent-action apparatus for filtering liquid
