| Patents for E02B 8 - Details of barrages or weirs (2,159) |
|---|
| 12/27/1995 | EP0688905A1 Caseless gate valve |
| 12/12/1995 | US5473787 Method and apparatus for cleaning tubes of heat exchangers |
| 12/06/1995 | EP0586493B1 Separating grid |
| 12/06/1995 | CN2214443Y Gravity lifting floating drainage weir |
| 12/05/1995 | US5472293 Multipurpose automatic gate control |
| 11/30/1995 | WO1995032044A1 An apparatus, components and a method for the filtering of liquid |
| 11/22/1995 | EP0682551A1 Strainer for removing particles from effluent. |
| 11/22/1995 | CN1112035A Bar screen having compound fine screen bar rack |
| 11/21/1995 | US5468376 Pressure sealed chain |
| 11/15/1995 | EP0581770B1 Screening rake |
| 11/14/1995 | CA2057772C Spillway in case of exceptional floods for dams comprising at least two sluices |
| 11/07/1995 | CA2032258C Spillway weir for dams and like structures |
| 10/11/1995 | EP0676227A1 Conveyor belt filter device |
| 10/11/1995 | EP0676226A1 Conveyor belt filter device |
| 10/10/1995 | US5456826 Separating grid |
| 10/09/1995 | CA2146620A1 Conveyor-bank filter apparatus |
| 10/05/1995 | DE19515924A1 Filter unit to retain solids in waste water flow appts. |
| 09/20/1995 | EP0672800A2 Bar screen having compound fine screen bar rack |
| 08/31/1995 | DE4406122A1 Rake for cleaning grating |
| 08/24/1995 | DE4404976A1 Device for separation of water-born animal life and substances |
| 08/23/1995 | CN1029537C Electric net placed at culvert of reservoir for holding up fish |
| 08/10/1995 | DE19501381A1 Self cleaning continuous belt effluent filter |
| 08/08/1995 | US5439600 Water pollution control |
| 07/20/1995 | WO1995019471A1 Method and apparatus for sewage treatment |
| 07/18/1995 | US5433554 Salt concentration gradient fishway |
| 06/20/1995 | US5425875 Screen scraper for trash racks |
| 06/06/1995 | US5422000 Device for cleaning large quantities of water from rakings |
| 05/31/1995 | CN1102941A 天然鱼塘 Natural ponds |
| 05/31/1995 | CN1028661C Vortex eliminating type hole-plate energy eleminating device |
| 05/30/1995 | US5419832 Guide lock for a traveling water screen |
| 05/24/1995 | EP0654293A1 Screening apparatus for the mechanical purification of waste water |
| 05/18/1995 | WO1995013430A1 Pipe for fishway |
| 02/28/1995 | US5393418 Water intake, in particular for industrial installations |
| 02/22/1995 | CN1027709C Pressure flow air permeable corrosion reducing technology |
| 02/15/1995 | EP0638003A1 Screening apparatus. |
| 02/07/1995 | US5387336 Screening rake |
| 01/26/1995 | DE4315869A1 Valve (slide) without a housing |
| 12/01/1994 | DE4339295C1 Screen installation for the mechanical cleaning of sewage |
| 11/29/1994 | CA2050341C Trash rack cleaning apparatus |
| 11/22/1994 | CA2032275C Spillway weir for dams and like structures |
| 11/16/1994 | CN1095124A Jet type pipeline device for fish passing through dam |
| 10/27/1994 | WO1994024373A1 Strainer for removing particles from effluent |
| 09/15/1994 | WO1994020226A1 Screening apparatus |
| 08/13/1994 | CA2089420A1 Inlet control device |
| 06/23/1994 | DE4305511C1 Biological mechanical waste water and sewage cleaner |
| 05/25/1994 | CN1087152A Apparatus for removing of objects seperated by grate from large amount of water |
| 05/11/1994 | EP0596332A1 Device for cleaning large quantities of water from debris |
| 03/23/1994 | EP0587813A1 Apparatus for removing of particles from the bottom of water reservoirs and other water ways |
| 03/16/1994 | EP0586865A1 Cleaner for bar screens |
| 03/16/1994 | EP0586493A1 Separating grid. |
| 02/24/1994 | DE4226709A1 Waste water tank with water overflow edge - has sound proofing cover fitted over spillway |
| 02/23/1994 | CN1082648A Air mixing corrosion reducing technology for pressure flow |
| 02/23/1994 | CN1082647A Eddy-eliminating orifice dissipater |
| 02/10/1994 | DE4241854C1 Rake for hydroelectric power-station water intake - has smaller-radius second segment behind and above and coaxial to first with radial plate bridging intervening gap |
| 02/09/1994 | EP0582542A1 Sieve grid for rain water spillway |
| 02/09/1994 | EP0581770A1 Screening rake. |
| 02/09/1994 | CN1023723C Spillway for discharging extraordinary floods at dams having at least two floods discharge structures |
| 02/09/1994 | CN1023722C Overflow spillway for dams structure |
| 01/12/1994 | EP0578559A1 Endless chain screen cleaner and filterarm for this chain |
| 11/23/1993 | US5263833 Fish guiding assembly and method utilizing same |
| 11/11/1993 | WO1993022513A1 Rotary sieving rake |
| 11/03/1993 | CN1022639C Sandsucker for reservoir |
| 10/27/1993 | EP0566869A1 Process for fixing a gate valve frame to a wall or a concrete surface |
| 10/13/1993 | CN1022428C Leakage-removing device for dam body |
| 10/06/1993 | CN1022340C Energy-relief method of soft base spillway dam |
| 09/21/1993 | US5246573 Cog rake bar screen |
| 09/01/1993 | CN2141433Y Water way for fish crossing dam |
| 07/28/1993 | EP0502973B1 Grid cleaner |
| 07/15/1993 | DE4200366A1 Flowing water filter grid - has alternating fixed and swing filters at powered conveyor |
| 07/14/1993 | CN2138145Y Underneath fish tunnel under dam |
| 07/07/1993 | EP0549768A1 Machine for cleaning gratings by means of an oscillating arm for hydraulic weirs |
| 06/23/1993 | EP0547425A1 Strainer for water and waste water purification plant |
| 06/15/1993 | CA2085286A1 Screening installation for water and waste water treatment plants |
| 06/02/1993 | EP0544096A1 Device for removing solid matter from a liquid flowing in a channel |
| 05/19/1993 | EP0542191A1 Separation device |
| 05/06/1993 | DE4135707A1 Method to reduce solid deposits in hydroelectric power station - uses swirl plate, to generate backflow on rake, to churn-up deposits, and flush through small solids |
| 03/23/1993 | US5195846 Spillway for discharging extraordinary floods at dams having at least two flood discharge structures |
| 02/10/1993 | EP0527075A1 Water-intake, particularly for industrial installation |
| 01/20/1993 | WO1993002255A1 Machine for cleaning gratings by means of an oscillating arm for hydraulic weirs |
| 01/20/1993 | CA2091901A1 Machine for cleaning gratings by means of an oscillating arm for hydraulic weirs |
| 12/30/1992 | CN1067465A Drainage pipe in dam body and arrangement thereof |
| 12/17/1992 | DE4119593A1 Rake for fine strainer grille of sewage-cleaning appts. - has arm swinging through right-angle only |
| 12/16/1992 | CN1067085A Counter-pull dam |
| 12/15/1992 | US5171436 Apparatus for the conveyance of screening |
| 12/10/1992 | WO1992021824A1 Separating grid |
| 12/10/1992 | WO1992021823A1 Apparatus for removing of particles from the bottom of water reservoirs and other water ways |
| 12/10/1992 | DE4215003A1 Grid and combing arrangement for rainwater collection chamber - has motor-oscillated grids arranged over combs to remove obstructions |
| 12/10/1992 | DE4215002A1 Grid and combing arrangement for rain water collection chamber - has comb swung to=and=fro through grid by motor to clear grid of obstructions |
| 12/01/1992 | US5167803 Mechanically cleaned bar screen |
| 11/19/1992 | DE4126647A1 Removal of trapped material for gate supply of small power stations - with trapped material directed to run-off channel via interlinked secondary grid or chain bucket system |
| 11/18/1992 | CN2122172U Dirt blowoff machine having internal teeth self-overturned |
| 11/10/1992 | US5161913 Method and apparatus for migratory fish passage to the sea |
| 10/14/1992 | WO1992018221A1 Screening rake |
| 10/14/1992 | CN1065305A Separating sand and mud for water conservancy and hydropower project |
| 10/11/1992 | CA2058643A1 Shield apparatus for travelling water screen |
| 09/16/1992 | EP0502973A1 Grid cleaner. |
| 08/18/1992 | US5139364 Automatic swing fishway apparatus |
| 07/22/1992 | CN1062942A Spillway for discharging extraordinary floods at dams having at least two floods discharge structures |
| 07/01/1992 | EP0493183A1 Spillway for exceptional floods for barrages comprising et least two spillways |
| 06/04/1992 | DE4037884A1 Rake cleaner in hydroelectric plant - incorporates frame with cleaning hooks rotating on horizontal axis |