Collapsible rubber dam

Details Collapsible rubber dam Collapsible rubber dam

1981-02-27

1985-02-12

Corbin, David H.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

405 91, E02B 720

Patent

active

044988109

ABSTRACT:
A collapsible rubber dam secured to a riverbed portion and slope portions of both riverbanks is inflated and deflated by supply and discharge of a fluid. A pipe for supply and discharge of a fluid is communicated with the inside of the rubber dam from the shape portion of at least one riverbank except the riverbed portion securing the rubber dam. Preferably, the pipe for supply and discharge of the fluid is located in a region defined by a top end of the rubber dam located in the slope portion, a line connecting the top end of the rubber dam to substantially a middle position of a deflated width of the rubber dam at a toe of the slope portion, and a securing position of the rubber dam at the toe of the slope portion.

REFERENCES:
patent: 3173269 (1965-03-01), Imbertson
patent: 3786638 (1974-01-01), Fish
patent: 3834167 (1974-09-01), Tabor
patent: 4299514 (1981-11-01), Muramatsu et al.
patent: 4330224 (1982-05-01), Muramatsu et al.

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