Collapsible dam and apparatus for raising and lowering the dam

Details Collapsible dam and apparatus for raising and lowering the dam Collapsible dam and apparatus for raising and lowering the dam

1980-03-31

1982-01-12

Corbin, David H.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

405 91, 405115, E02B 720

Patent

active

043102620

ABSTRACT:
A collapsible dam comprising a flexible substantially rectangular substantially water repellant web stretched across the width of a waterway with one edge fixed to the bottom of the waterway and the opposite edge supported by a rigid rod adjacent to the water surface. The rigid rod is hinged with respect to the bottom of the waterway and connected at one end to a pressure actuated piston-cylinder assembly which moves the opposite end of the rod and attached web upwardly while the fixed edge remains submerged against the bottom of the waterway.

REFERENCES:
patent: 229136 (1880-06-01), Jennings
patent: 4073147 (1978-02-01), Nomura
patent: 4146346 (1979-03-01), Salo

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