| Patents for E03F 7 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools (2,571) |
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| 10/08/2003 | EP1266099B1 Method for retrieving predetermined locations in sewer and pipeline systems |
| 09/09/2003 | US6615875 Liner for reinforcing a pipe and method of making the same |
| 08/28/2003 | DE29522428U1 Channel cleaning vehicle - has at least one clearance hose wound on reel and activated with flushing water and at least one suction hose connected to slurry container |
| 08/26/2003 | US6609854 Structure and method for detecting an inflated state of a flexible membrane dam |
| 08/21/2003 | WO2003069082A1 A barrier for preventing a rat from entering a sewage pipe |
| 08/14/2003 | DE10216091C1 Monitoring method for suction valve operating control in reduced pressure drainage system providing acoustic signal upon entry of air into line between operating control and suction valve |
| 08/06/2003 | CN1434236A Block unit for repairing flow passage facillities and method of repairing flow passage facilities |
| 08/05/2003 | US6601248 Drain connector |
| 07/24/2003 | US20030136455 Block unit for repairing flow passage facilities and method of repairing flow passage facilities |
| 07/24/2003 | DE20307233U1 Stop device for preventing rodents, especially rats from entering residential buildings from sewer pipes or refuse chutes, with sewer pipe having tube section, the inner wall of which is fitted with electric conductors |
| 07/24/2003 | DE20307232U1 Device for preventing further ingress of rodents such as rats into waste pipes feeds ultrasonic waves or light flashes into waste pipe downstream of U-bend section of waste pipe |
| 07/10/2003 | DE20303660U1 Safety grid, to cover the open end of a pipe channel, has rods held in a frame holder which can be released wholly or separately, to prevent the entry of children and animals and reduce flood water back-up in the pipe |
| 06/18/2003 | EP1320078A2 Method for recording time, location and use of a working machine |
| 06/18/2003 | CN2556409Y Multi-functional vacuum dirt-absorption tank for diesel engine |
| 06/10/2003 | US6575475 Tear-out rubber coupling |
| 06/05/2003 | DE20303592U1 Rat trap, to be positioned in toilet bowl and comprising swivel mounted bottom flap automatically closing after rat has entered |
| 06/04/2003 | EP1235754B1 Apparatus for removing deposits and/or pollutans from water |
| 05/22/2003 | DE10218441C1 Position and direction determination device for drainage channel entry and exit runs, has tachymeter fitted with attachment for deflection of target beam to variable depth |
| 05/20/2003 | US6565284 Infiltration control system and method |
| 05/20/2003 | US6564823 Method and apparatus for testing plumbing installations |
| 05/15/2003 | WO2000073199A3 Device for accommodating aggressive liquids |
| 05/08/2003 | WO2003038331A1 A liner for reinforcing a pipe and method of making the same |
| 05/07/2003 | EP1308567A2 Non-return valve |
| 04/24/2003 | US20030076116 Method for retrieving predetermined locations in sewer and pipeline systems |
| 04/23/2003 | CN1106491C Floor drain |
| 04/17/2003 | US20030071212 Method of tracing drains |
| 04/10/2003 | WO2003029794A1 Method of tracing drains |
| 04/10/2003 | DE20301683U1 Automatic backflow pipe closure device for manholes or drains, includes float for keeping check valve above water level |
| 04/10/2003 | DE20212817U1 Barrier device, for preventing rats entering drain system in homes or commercial premises, comprises mounting ring with pivoting closure flap for inside of pipe |
| 03/25/2003 | US6538732 Inspection system and method |
| 03/06/2003 | WO2002057727A3 Tear-out rubber coupling |
| 03/06/2003 | DE20214782U1 Barrier for preventing rats from entering toilet via waste pipe connection, comprises raised profile fitted above check valve |
| 02/20/2003 | WO2003014485A1 Reinforcing element of underground pipe, and trenchless repairing and reinforcing method using the same |
| 02/20/2003 | DE29924362U1 Sludge suction unit with motorized pump and container is connected to drain line |
| 02/12/2003 | CN2535467Y Dirt-removing vehicle special for rain-water discharging well |
| 01/22/2003 | EP1278003A2 Device for securing a plugging member |
| 01/09/2003 | WO2002099325A8 Tool-bearing carriage, in particular mobile in a pipe |
| 12/31/2002 | US6499503 Backflow valve |
| 12/26/2002 | US20020197112 Structure and method for detecting an inflated state of a flexible membrane dam |
| 12/24/2002 | CA2284741C Automatic back water valve system |
| 12/18/2002 | EP1266099A1 Method for retrieving predetermined locations in sewer and pipeline systems |
| 12/12/2002 | WO2002099325A1 Tool-bearing carriage, in particular mobile in a pipe |
| 12/04/2002 | EP1261438A1 Well-cleaning system |
| 12/04/2002 | EP0853164B1 Sewage by-pass discharging apparatus for sewage pipe works |
| 11/28/2002 | DE10123393A1 Arrangement for removing sediment impurities from fixed objects such as street drains, e.g. for cleaning sewers, has pressure sensor for detecting weight of impurity removed, and device for storing in database in association with object |
| 11/28/2002 | DE10122397A1 Method for checking sewerage pipes and vehicle suitable for this has data processing equipment carried on vehicle |
| 11/20/2002 | EP1258572A2 Filter device for filtering water leaving a tank holding dirty water |
| 11/20/2002 | CN2521281Y Special pit-cleaning shovel |
| 11/12/2002 | CA2167789C Automatic back water valve system |
| 11/07/2002 | US20020162406 Method and accessories for pipe replacement |
| 11/05/2002 | US6474357 Vacuum sewer system |
| 10/31/2002 | WO2002086666A2 Flow transport analysis method and system |
| 10/31/2002 | WO2002086248A1 Catch basin attachment |
| 10/31/2002 | DE10119884A1 Surveying cap for surveying sewer/drain shafts/gully holes moves over a shaft/shaft cover using a position-recording system to record position coordinates for the surveying cap |
| 10/31/2002 | DE10119883A1 Device for surveying sewer/drain systems has an oblong unit linked to an evaluating device recording data and lowered down into a sewer shaft with a movable surveying bar able to record diverse geometrical data about the sewer shaft |
| 10/24/2002 | US20020156590 Flow transport analysis method and system |
| 10/22/2002 | US6468001 Method for redeveloping or renovating sewer drains and sewer ducts |
| 10/10/2002 | WO2002055796B1 Means for connecting a sliding valve device to a storage basin |
| 09/18/2002 | CN1369601A Flushing toilet |
| 09/12/2002 | US20020124898 Liner for reinforcing a pipe and method of making the same |
| 09/11/2002 | EP1239091A2 Non-return closure for sewer system ducts |
| 09/10/2002 | US6447206 Beaver control screen for culvert pipe |
| 09/04/2002 | EP1235754A1 Apparatus for removing deposits and/or pollutans from water |
| 09/04/2002 | CN1090271C 真空阀控制器 Vacuum valve controller |
| 09/04/2002 | CN1090270C Water flushing closet |
| 08/27/2002 | US6438792 Apparatus for unwinding/rewinding a suction hose for draining cesspools, septic tanks and sewers in general |
| 08/14/2002 | EP1230458A1 Sewer system flow control to reduce wastewater treatment costs |
| 07/25/2002 | WO2002057727A2 Tear-out rubber coupling |
| 07/25/2002 | DE10101613A1 Mittel zur Verbindung einer Schiebevorrichtung mit einer Einlauföffnung eines Sammelbeckens und Verfahren zum Verschließen Means for connecting a pusher with an inlet opening of a collecting basin, and method for closing |
| 07/18/2002 | WO2002055915A2 Lining of pipes |
| 07/18/2002 | WO2002055796A1 Means for connecting a sliding valve device to a storage basin |
| 07/18/2002 | CA2434008A1 Lining of pipes |
| 07/11/2002 | US20020090266 Beaver controlling culvert attachment |
| 07/02/2002 | US6413015 Beaver controlling culvert attachment |
| 06/20/2002 | WO2000006932A3 Method for redeveloping or renovating sewer drains and sewer ducts |
| 06/20/2002 | EP1144895A3 Method for redeveloping or renovating sewer drains and sewer ducts |
| 06/13/2002 | US20020071721 Infiltration control system and method |
| 06/05/2002 | EP1210483A2 Mud suction unit |
| 05/23/2002 | DE10057373A1 Dirt-insensitive methods for detecting and determining the extent of dirt deposits in sewers for use in conjunction with a high pressure cleaning jet so that the effectiveness of cleaning can be accessed |
| 05/21/2002 | US6390118 Apparatus and method for testing plumbing system |
| 05/02/2002 | EP1200682A1 Method and system for the recuperation of septic tank content |
| 04/30/2002 | US6379547 Mobile unit and method for purifying sludge and waste water |
| 04/25/2002 | US20020046776 Pipe |
| 04/25/2002 | US20020046771 Vacuum sewer system |
| 04/17/2002 | EP1197730A2 Method for determining longitudinal profiles and device therefor |
| 04/11/2002 | DE10050303A1 Reptile guard for drainage systems comprises springloaded flap curved against snake entry from outside but permitting free draining water outflow. |
| 04/04/2002 | DE10025645C2 Behälter für ein Reinigungsfahrzeug Container for cleaning vehicle |
| 03/21/2002 | DE10008400A1 Lever device for removing sludge, especially from drains or underwater, comprises lever and spade mounted on common axle |
| 03/12/2002 | US6354330 Lining of pipelines with a flexible lining including a heat curable resin by curling in stages |
| 02/27/2002 | CN1337506A Vacuum dirt-discharging system |
| 02/13/2002 | EP1179643A2 Vacuum sewer system |
| 02/07/2002 | CA2352596A1 Vacuum sewer system |
| 01/30/2002 | EP1175535A1 Device for receiving material that can be drawn up by suction |
| 01/23/2002 | EP0891457B1 Method and apparatus for reducing saline infiltration in coastal sewerage systems |
| 01/03/2002 | DE10029764A1 Moving trolley and trolley system for operating in sewers and ducting has a trolley core, wheels, a camera arm and/or an operating arm fastening on the trolley core having two longitudinal parts interlinked with two parallel grooves |
| 12/20/2001 | DE10045959C1 Mobile examination device for drainage pipe has camera linked to image screen incorporated in elongate container receiving displacement rod for camera |
| 12/06/2001 | US20010049565 System and method for contraband retrieval in drainage/sewer systems |
| 12/06/2001 | DE10025801A1 Rain water introduction detection in sewage pipeline, involves spraying phenolphthalein and soda solution in rain water and sewage water paths to detect mixing of rain and sewage water by monitoring color reaction |
| 12/06/2001 | DE10025645A1 Reservoir for cleaning vehicle, having nozzle aperture sealed through spring-loaded locking element which is adjustable through high-pressure water into opened position |
| 11/28/2001 | CN1075582C Vacuum generator with ejector device |