Hydraulic and earth engineering – Drainage or irrigation – Control means responsive to sensed condition
Patent
1990-01-08
1991-03-05
Taylor, Dennis L.
Hydraulic and earth engineering
Drainage or irrigation
Control means responsive to sensed condition
1372361, 405 36, 405 43, E02F 100, E02B 1100
Patent
active
049973126
ABSTRACT:
A water backup monitoring system for a buried sewer line is provided, the sewer line being provided at a given point therealong with at least one overflow opening into which opening water which cannot be handled by the sewer line will rise and overflow. A manhole extends between the sewer line and the surface and surrounding said overflow opening to permit a man to gain access to the area of said overflow opening. A standpipe in the manhole communicates with the overflow opening, into which standpipe water rises when backflow conditions exist in the sewer line. A backflow-indicating tube is provided outside of this standpipe, and into which backflow water flows from the overflow opening so that the water in the backflow-indicating tube and the standpipe are at the same level. The tube provides an indication of the level of the water therein. A one-way valve in the tube permits water to rise in the tube, but prevents it from draining therefrom. When flow conditions abate and water drains from the standpipe, a permanent record remains in the tube of the level to which the water rose in the standpipe.
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Arnold Stephen R.
Hattis Russell E.
Taylor Dennis L.
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