E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/34, 61/43
E02B 11/00 (2006.01) E02B 13/00 (2006.01)
Patent
CA 1281909
A RISER ASSEMBLY FOR A SUB-SURFACE IRRIGATION AND DRAINAGE SYSTEM Abstract of the Disclosure A riser assembly for a sub-surface irrigation and drainage system is disclosed having a molded, housing defining a generally rectangular, elongated cavity. A divider within the housing divides the cavity into an upstream chamber and a downstream chamber. A drainage opening and a whir opening are defined by the divider, and slidable gate valves are disposed over each opening. By adjusting the positions of the gate valves, the upstream water level cable may be readily adjusted.
535884
Ridout & Maybee Llp
Warner James I.
LandOfFree
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