Seawall filter

Details Seawall filter Seawall filter

2008-04-18

2009-11-10

Upton, Christopher (Department: 1797)

Liquid purification or separation

Structural installation

Geographic

C210S448000, C210S454000, C210S461000, C210S463000, C210S484000, C210S497300, C405S031000, C405S043000, C405S284000

Reexamination Certificate

active

07615148

ABSTRACT:
A filter assembly for a seawall filters the flow of groundwater through a hole in the wall. The filter assembly includes: (a) a housing containing a flat flange and a perforated conical shell, the shell adapted to extend into the hole with its apex extending toward the landward side, the flange having a seaward side adapted to fit flushly against the seawall, the flange having a landward side connected to the shell, the flange having an opening that defines an open base for the shell; (b) a perforated conical cage having an open base that fits within the shell of the housing; (c) a conical filter element having an open base that fits within the cage; (d) a perforated conical sleeve having an open base that fits within the filter element; and (e) a perforated cap that is removably and flushly fastened to the opening in the flange to secure the cage, filter element, and sleeve within the shell of the housing.

REFERENCES:
patent: 2647636 (1953-08-01), Rafferty
patent: 3456799 (1969-07-01), Musial
patent: 3498464 (1970-03-01), Enosolone
patent: 4211543 (1980-07-01), Tokar et al.
patent: 4460462 (1984-07-01), Arneson
patent: 4645600 (1987-02-01), Filippi
patent: 4666334 (1987-05-01), Karaus
patent: 5015375 (1991-05-01), Fleck
patent: 5916435 (1999-06-01), Spearman et al.
patent: 6394706 (2002-05-01), Gentry
patent: 2007/0181486 (2007-08-01), Ashliman
patent: 2007/0193129 (2007-08-01), Mansfield
patent: 2008/0169228 (2008-07-01), Ventura

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