Liquid purification or separation – Processes – Separating
Reexamination Certificate
2006-08-01
2006-08-01
Popovics, Robert James (Department: 1724)
Liquid purification or separation
Processes
Separating
C210S798000, C210S391000, C210S393000, C210S396000, C210S456000
Reexamination Certificate
active
07083735
ABSTRACT:
A high debris content strainer that utilizes a cylindrically-shaped screen having four removal assemblies positioned evenly around the screen periphery. Each removal assembly includes a backwash spray bar on the downstream side of the screen and a scraper/brush and discharge tube on the upstream side of the screen where the debris lodges during filtering. The screen is rotatably-mounted inside a strainer housing. A shroud surrounds ¾ of the screen periphery and includes an opening directly adjacent an input fluid flow line, as well as scoops on opposing sides of the shroud. The shroud evenly distributes the contaminated fluid flow around the screen. When cleaning the screen is desired, the screen is rotated while the backwash spray bars are activated and, in combination with the scraper/brushes, the debris is dislodged from the upstream surface of the screen and directed into the discharge tubes which divert the contaminants to a discharge pipe.
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Caesar Rivise Bernstein Cohen & Pokotilow Ltd.
Popovics Robert James
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