초록 ▼

A subterranean drainage and fluid filtration system includes an inlet conduit defined by fluid filtering fabric encasing a fluid pervious panel with raised lands and depressions to define passageways for the fluid. The fluid flows downwardly into a filtration system comprising the serpentine wrapped

A subterranean drainage and fluid filtration system includes an inlet conduit defined by fluid filtering fabric encasing a fluid pervious panel with raised lands and depressions to define passageways for the fluid. The fluid flows downwardly into a filtration system comprising the serpentine wrapped filter fabric in which core sheets and spacers are provided. These core sheets and spacers may be identical to one another and each includes raised lands so as to achieve flow of fluid downwardly and horizontally through the fluid filter.

대표청구항 ▼

A subterranean drainage system for fluid filtration, said system comprising fluid conduit means oriented generally horizontally to provide an elongated subterranean cavity for receiving fluid to be filtered, said fluid conduit means including at least one layer of filter fabric provided around at le

A subterranean drainage system for fluid filtration, said system comprising fluid conduit means oriented generally horizontally to provide an elongated subterranean cavity for receiving fluid to be filtered, said fluid conduit means including at least one layer of filter fabric provided around at least a portion of said elongated cavity and having laterally outwardly extending marginal edge portions, said fluid conduit means providing communication between said cavity and the region below said marginal edge portions, fluid filtering means below said inlet conduit means and including a plurality of fluid impervious core sheets, said sheets oriented parallel to one another and having non-planar opposed faces arranged in spaced relation to one another to form a generally rectangular elongated stack of width (W) and height (H), fluid pervious filter fabric wrapped in serpentine fashion around said non-planar faces of said core sheets to provide at least one layer of fabric of width (W) and height (H) adjacent said non-planar faces of said core sheets.