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Class Information
Number: 405/87
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control > Water gate or adjustable weir
Description: Method or apparatus relating to movable regulators which control the volume of water flowing through an open channel.










Sub-classes under this class:

Class Number Class Name Patents
405/88 Center flow 5
405/92 Condition responsive 61
405/90 Removable 32
405/98 Roller or flexible 2
405/103 Sliding 22
405/99 Swinging 22
405/89 Uniform discharge 2


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
5758991 Underground dam Jun. 2, 1998
5758989 Linear action hurter Jun. 2, 1998
5709502 Connection system for reinforced composite structures Jan. 20, 1998
5678956 Navigational bypass, gate and pump device for use in water Oct. 21, 1997
5672028 Flood control system Sep. 30, 1997
5642963 Spillway gate system Jul. 1, 1997
5634742 Bulkhead for and method for dry isolation of dam gates Jun. 3, 1997
5622448 Panel ditch check for temporary erosion and sediment control Apr. 22, 1997
5595457 Storm drainage underflow dam unit Jan. 21, 1997
5577863 Self-Actuating sluice gate Nov. 26, 1996
5472293 Multipurpose automatic gate control Dec. 5, 1995
5460462 Liquid and flood water barrier wall forming-apparatus Oct. 24, 1995
5388928 Flexible membraneous weir Feb. 14, 1995
5330289 Serpent sediment-sluicing system Jul. 19, 1994
5284402 System for the manufacture and installation of selective intake towers in reservoirs Feb. 8, 1994
5255999 Water-level control device Oct. 26, 1993
5244309 Fluid flow release regulating device Sep. 14, 1993
5217557 Process for the production of thermoplastic levee gates Jun. 8, 1993
5178490 Wicket dam lifting module Jan. 12, 1993
5171102 Wier construction Dec. 15, 1992
5092708 Barrier, in particular for damming a tidal waterway during storm tides Mar. 3, 1992
4998847 Drainage conduit which is resistant to clogging by beavers Mar. 12, 1991
4934867 Sealing device ensuring lateral tightness of a weir gate Jun. 19, 1990
4877352 Method and apparatus for control of an upstream water level Oct. 31, 1989
4836711 Hinge-assembly, particularly for underwater mounting Jun. 6, 1989
4832527 Vertically reciprocable gates for the control of a liquid media May. 23, 1989
4797027 Automatic level-regulating sluice Jan. 10, 1989
4735525 Irrigation channel gates Apr. 5, 1988
4685828 Irrigation channel gate Aug. 11, 1987
4662783 Flexible membraneous weir May. 5, 1987
4657434 River control structures Apr. 14, 1987
4648742 Tainter gate system Mar. 10, 1987
4606672 Constant upstream level gate Aug. 19, 1986
4600359 Indexing method and apparatus Jul. 15, 1986
4578188 Sewerage flow diverter Mar. 25, 1986
4576512 Rotary sluice gate Mar. 18, 1986
4514110 Gate assembly for ponds Apr. 30, 1985
4394098 Radial gate having fine tuning of flow control Jul. 19, 1983
4352591 Pneumatic toroidal weir Oct. 5, 1982
4310262 Collapsible dam and apparatus for raising and lowering the dam Jan. 12, 1982
4300858 Variable dam Nov. 17, 1981
4199274 Flow measuring flume of adjustable capacity Apr. 22, 1980
4167358 Open-channel flow control system Sep. 11, 1979
4146346 Apparatus and method for controlling tide waters Mar. 27, 1979

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