Crest gate
OwnerHenry K. Obermeyer, Charles E. Snowinventors
Life of this patent
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Abstract
A crest gate for a dam spillway has a plurality of pivotably mounted panels provided end-to-end across the spillway structure and each hinge joint is a flexible neoprene strip. Strips are also provided between adjacent panels for sealing the spaces between panels. These panels are raised by inflatable elongated tubular bladders secured to the spillway by a harness. The hinge strip and harness are secured in place by common clamping means.
Claims9
A crest plate for a dam spillway comprising a horizontally extending member adapted to be secured to the spillway, a least on rectangular panel, means pivotably supporting said panel for movement between angularly spaced positions on an axis adjacent said horizontally extending member, said axis located adjacent one marginal edge of said panel and said panel having an opposite marginal free edge movable vertically between a down and an up position, elongated inflatable bladder means of generally cylindrical cross section when inflated, harness means for supporting and protecting said elongated bladder means in relationship to said panel;
- and means for inflating said bladder to engage and to move said panel and thereby raise said marginal free edge thereof, said means pivotably supporting said panel comprising an elongated strip of elastomeric material having one marginal edge portion secured to said horizontally extending member and having an opposite marginal edge portion secured to said panel adjacent said one panel marginal edge.
Dependencies are inferred from the claim text.