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Class Information
Number: 405/95
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control > Water gate or adjustable weir > Condition responsive > To pressure on pivoted water gate > With latch for closed position
Description: Method or apparatus including a restraining means to retain the water gate in its closed position, wherein the water gate is opened by the pressure of the liquid only after the restraining means is released.

Patents under this class:

Patent Number Title Of Patent Date Issued
8590560 Opening/closing device Nov. 26, 2013
7467911 Storm drain basin gate system Dec. 23, 2008
6779947 Gate systems and methods for regulating tidal flows Aug. 24, 2004
6692187 Flood gate for door Feb. 17, 2004
6485231 Foundation flood gate with ventilation Nov. 26, 2002
5678956 Navigational bypass, gate and pump device for use in water Oct. 21, 1997

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