Dow Global Technolgoies LLC

Gerald Drouin Corcoran

Peter J Schulz

Chad V Schuette

Scott T Burr

John H Mallard

George D Caffell

Michael J Vosberg

Mark O Labonville

Abhishek Shrivastava

Rashi Tiwari

David A Voth

Tanya K Krueger

Jim M Grider, Jr

Thomas W Stroud

A filter assembly including a filter screen () comprising a band (') of porous material extending between two axially aligned opposing ends (&#x2032;) and defining a cylindrical periphery (), wherein the ends (&#x2032;) are each secured to a dynamic tensioning mechanism () that permits the ends (&#x2032;) to move bi-directionally relative to one another about the periphery () of the filter screen ().

Cylindrical filter screen with tensioning mechanism

A hydroclone comprising: a tank () including a fluid inlet (), a filtered fluid outlet () and an inner peripheral wall () enclosing at least one chamber (); a filter assembly () located within the chamber () and comprising a circular filter screen () centered about an axis (X); and a cleaning assembly () comprising at least one cleaning member () biased against and adapted to rotate about the periphery () of the filter screen (); and at least one of: a) the filter screen () is reversibly deformable a radial distance (D) of from 0.1 to 10 times the average pore size by the cleaning member () biased against the periphery () of the filter screen (); and b) a compressive member () providing a continuous radially inward force that biases the cleaning member () against the periphery () of the filter screen ().

Hydroclone with improved cleaning assembly

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Santa Clara, CA, United States of America

Gerald Drouin Corcoran