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Class Information
Number: 405/92
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control > Water gate or adjustable weir > Condition responsive
Description: Method or apparatus wherein a characteristic or a change in a characteristic is effective to change the position of the water gate.










Sub-classes under this class:

Class Number Class Name Patents
405/96 Float 51
405/94 To pressure on pivoted water gate 33
405/93 To weight of liquid separated from a main body 6


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8608404 Smart sustainable agricultural/aquacultural system and methods Dec. 17, 2013
8591149 Secured fusegate for flood control Nov. 26, 2013
8591147 Combined water storage and detention system and method of precipitation harvesting and management Nov. 26, 2013
8511938 Flood flaps vent for sealed crawlspace Aug. 20, 2013
8246272 Actuated spill barrier Aug. 21, 2012
8240951 Diverting storm surge-apparatus and method Aug. 14, 2012
8033753 Automatic flooding protection for underground ventilation ducts Oct. 11, 2011
7926539 Flood vent access door assembly Apr. 19, 2011
7744310 Hydrostatically operated variable height bulkhead Jun. 29, 2010
7658572 Tide apparatus and tide structure Feb. 9, 2010
7600944 Flood vent Oct. 13, 2009
7461999 Flow measurement and control Dec. 9, 2008
7429147 Anti-flooding device for the exploitation of water energy Sep. 30, 2008
7270498 Flood vent Sep. 18, 2007
7229234 Method for preventing and discharging flood Jun. 12, 2007
6884001 Farm pond sediment diverter Apr. 26, 2005
6779947 Gate systems and methods for regulating tidal flows Aug. 24, 2004
6692187 Flood gate for door Feb. 17, 2004
6623210 Guidance method and guidance system of flood water Sep. 23, 2003
6609854 Structure and method for detecting an inflated state of a flexible membrane dam Aug. 26, 2003
6490506 Method and apparatus for monitoring hydroelectric facility maintenance and environmental costs Dec. 3, 2002
6485231 Foundation flood gate with ventilation Nov. 26, 2002
6427718 Automated farm turnout Aug. 6, 2002
6338594 Movable barrier wall Jan. 15, 2002
6287050 Foundation flood gate with ventilation Sep. 11, 2001
6273639 Method and apparatus for facilitating migration of fish past dams and other barriers in waterways Aug. 14, 2001
6213684 Telescoping weir Apr. 10, 2001
6210072 Method and apparatus for erosion protecting a coast Apr. 3, 2001
6196764 Automatic wicket for a hydraulic structure Mar. 6, 2001
6171023 Water control gate Jan. 9, 2001
5984575 Flood flow modulator Nov. 16, 1999
5944445 Device and method for relieving flooding from enclosed space Aug. 31, 1999
5800077 Method and apparatus for monitoring a hydroelectric facility trash rack Sep. 1, 1998
5758989 Linear action hurter Jun. 2, 1998
5613803 Method and apparatus for the automated control of canals Mar. 25, 1997
5577863 Self-Actuating sluice gate Nov. 26, 1996
5516230 Gate for controlling upstream water level May. 14, 1996
5472293 Multipurpose automatic gate control Dec. 5, 1995
5460462 Liquid and flood water barrier wall forming-apparatus Oct. 24, 1995
5372456 Irrigation control structure Dec. 13, 1994
5342144 Stormwater control system Aug. 30, 1994
5160216 Drainage distribution amount determining method and drainage system Nov. 3, 1992
5139364 Automatic swing fishway apparatus Aug. 18, 1992
5092707 Crest gate operating system Mar. 3, 1992
5067850 Apparatus for detection and containment of pollutants in a drainage system Nov. 26, 1991
5035535 Device for regulating the flow in a drainage siphon tube Jul. 30, 1991
4963057 Sluice gate for automatically regulating a level Oct. 16, 1990
4869617 Portable highway barrier Sep. 26, 1989
4836711 Hinge-assembly, particularly for underwater mounting Jun. 6, 1989
4797027 Automatic level-regulating sluice Jan. 10, 1989

1 2










 
 
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