Earth drains

Details Earth drains Earth drains

E - Fixed Constructions

02

B

E02B 11/00 (2006.01)

Patent

CA 2154239

The invention is an earth drain, comprised of a core consisting of an elongated, flexible web having an array of discrete, longitudinally and transversely spaced projections on at least one surface thereof, and a filter of sheet-like water permeable material encasing the core and adapted to be maintained in spaced relationship to the web by the free ends of the projections. The projections are arranged with regular spacing in parallel rows disposed transversely of the web, and projections in alternating transverse rows are disposed between the projections in an adjacent row. A transverse line touching the outermost periphery of at least some of the projections in each row intersects part of some of the projections of an adjacent row causing an overlap between at least some of the projections in adjacent rows in the longitudinal direction of the web.

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