E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
E02B 11/00 (2006.01)
Patent
CA 2131546
2131546 9318239 PCTABS00025 System for draining a land surface (10) which is covered by a waterproof membrane (12), whereby tubular gutters (14) are installed in trenches in the land surface (10) adjacent to the margins of the waterproof membrane (12) and whereby the land surface (10) is slightly sloped such that water falling onto the membrane (12) will flow in a natural manner in the direction of a gutter (14). Each tubular gutter (14) can be assembled from one or more interconnected tubes each comprising one or more aligned apertures (16, 18, 20) in the upwards directed wall section. The marginal section of the membrane (12) adjacent ot said aligned row of apertures (16, 18, 20) in the tubular gutter wall is attached to the tubular gutter (14) by suitable means (17, 22, 32) such that water flowing along the membrane (12) will be received in said gutter (14).
Van Dorp Arie
Arvado Patent B.v.
Mccarthy Tetrault Llp
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