| Patents for E03F 7 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools (2,571) |
|---|
| 11/20/2001 | US6318395 Method and apparatus for sewer system flow control to reduce wastewater treatment electrical costs |
| 11/13/2001 | US6314988 Flood control valve assembly |
| 10/17/2001 | EP1144895A2 Method for redeveloping or renovating sewer drains and sewer ducts |
| 10/11/2001 | DE10014703A1 Verfahren zum Wiederauffinden von vorgebbaren Stellen in Kanal- und Rohrleitungssystemen A method for retrieving predetermined locations in sewer and pipeline systems |
| 10/10/2001 | CN2453065Y Drainage pipeline maintaining and probing device |
| 10/10/2001 | CN1072630C Method and device for collection and treatment of excrement |
| 10/04/2001 | WO2001073232A1 Method for retrieving predetermined locations in sewer and pipeline systems |
| 09/27/2001 | WO2001071230A1 Backflow valve with float on obturator |
| 09/27/2001 | US20010023708 Backflow valve |
| 09/12/2001 | EP1132532A2 Water back-up closure to be retrofitted in manhole shafts |
| 09/04/2001 | CA2149109C Pipe blocking technique |
| 08/30/2001 | DE10113351A1 Rückstauklappe mit Schwimmer und Gegengewicht Return flap with float and counterweight |
| 08/16/2001 | WO2001058605A1 Well-cleaning system |
| 08/16/2001 | EP0760039B1 A vacuum unit and a vacuum toilet system comprising such a unit |
| 08/16/2001 | DE10006457A1 High water backwash closure for retrospective inspection shaft installation has hydraulic or pneumatic device for inflating body from collapsed state to inflated state closing channel opening |
| 08/09/2001 | DE10004296A1 System to prevent a backflow of sewage into a building during a flood or high water conditions has a float on a guide to block an outflow when the external conditions would force a flow back from the outside |
| 07/25/2001 | EP1118040A1 Device with a probe for investigating pipe interiors |
| 07/24/2001 | US6263747 Remote installation method and tool |
| 07/17/2001 | US6262801 Laser reference level setting device |
| 06/14/2001 | WO2001042147A1 Apparatus for removing deposits and/or pollutants from water |
| 06/14/2001 | WO2001017916A3 Mud suction unit |
| 05/17/2001 | WO2001034919A1 Sewer system flow control to reduce wastewater treatment costs |
| 05/09/2001 | CN2429580Y Hard PVC water draining pipe with double walls |
| 05/09/2001 | CN1065582C Vacuum valve controller for vacuum sewer system |
| 05/03/2001 | WO2001031241A1 Method and apparatus for testing plumbing installations |
| 05/03/2001 | DE10033396A1 Shut-off device for testing chamber for channel joint consists of slide with form-stable plug and sponge rubber sealing strip |
| 04/24/2001 | CA2219218C Sump-vented controller mechanism for vacuum sewerage transport system |
| 04/17/2001 | US6216543 Method and device for controlling liquid fluxes in pipes lines |
| 04/17/2001 | US6216285 Waste transport arrangement |
| 04/11/2001 | CN1064429C A cacuum unit and a vacuum toilet system comprising such a unit |
| 04/10/2001 | US6213139 Hybrid solids conveying system |
| 03/29/2001 | DE19942187A1 Schlammsauger Sludge Pump |
| 03/15/2001 | WO2001017916A2 Mud suction unit |
| 03/15/2001 | CA2382911A1 Mud suction unit |
| 03/14/2001 | EP0879131B1 An extrusion apparatus and method, a tubular product, and a pipe |
| 03/13/2001 | US6199576 Bi-directional cleanout with backflow preventer |
| 03/07/2001 | CN2422361Y Long handle article-taking device |
| 03/01/2001 | WO2001014653A1 Drain blockage sensor |
| 02/28/2001 | CN2421350Y Mouse preventing floor drain for drain pipe system |
| 02/28/2001 | CN1062643C Method and apparatus for controlling pumps in drainage system |
| 02/20/2001 | CA2024024C Pipe connection structure and vacuum-type sewage collecting apparatus incorporating the pipe connection structure |
| 02/15/2001 | WO2001011155A1 Method and system for the recuperation of septic tank content |
| 02/08/2001 | WO2001009443A1 A system to prevent the rise of insects and other animals in drainpipes of hydraulic installations in building industry and roads |
| 02/08/2001 | DE10022874A1 Vehicle for freeing and removing by suction deposits from road gullies |
| 02/07/2001 | CN1061592C 管状产品和挤压设备及其方法 Tubular products and extrusion apparatus and method |
| 02/06/2001 | CA2279697A1 Mobile waste treatment unit |
| 02/05/2001 | CA2279723A1 Animal control gate for culverts and the like |
| 01/16/2001 | CA2074065C Low-speed septic tank sludge dewatering apparatus |
| 12/26/2000 | US6164869 Device for influencing a flow of waste water |
| 12/19/2000 | US6161563 Plumbing tool |
| 12/07/2000 | WO2000073199A2 Device for accommodating aggressive liquids |
| 12/07/2000 | DE19926682C1 Waste water collection system has water collection shaft sunk in ground coupled to above ground connection fitting for coupling to water collection vehicle at spaced location |
| 11/30/2000 | DE10020342A1 Sewage pipe check unit |
| 11/08/2000 | EP1051037A2 Inspection system and method |
| 11/08/2000 | EP1050634A2 Apparatus for unwinding/rewinding a suction hose for draining cesspools, septic tanks and sewers in general |
| 11/03/2000 | CA2307731A1 Apparatus for unwinding/rewinding a suction hose for draining cesspools, septic tanks and sewers in general |
| 11/02/2000 | WO2000065164A1 Device for receiving material that can be drawn up by suction |
| 11/02/2000 | DE19919155A1 Vorrichtung zur Aufnahme von aufsaugbarem Material Apparatus for recording aufsaugbarem material |
| 10/31/2000 | US6138697 Hydrodynamic apparatus for cleaning channels and for monitoring channels |
| 10/31/2000 | CA2228826C Animal control gate for culverts and the like |
| 10/26/2000 | WO2000063864A1 A waste collection monitoring system |
| 10/24/2000 | US6135139 Apparatus for draining hoses |
| 10/17/2000 | US6131595 Automatic back water valve system |
| 10/11/2000 | EP1043453A2 Method and device to remove a liquid residue from equipment of water carrying vehicles |
| 10/03/2000 | US6125878 Sewer inspection chamber with back-flow prevention valve and method and apparatus for installing valve in sewer inspection chamber |
| 09/28/2000 | DE19910254A1 Hebeanlage für Abwasser Lifting plant for wastewater |
| 09/26/2000 | CA2020514C Retractable guard for sewage pipes |
| 09/21/2000 | DE10012556A1 Shut-off device for surface drainage channel etc. has freely moveable plug-shaped closure part held on suspension fork for open drain, and fitted by a tool |
| 09/20/2000 | CN2397192Y Deodorant non-return valve for sewer pipe |
| 09/20/2000 | CN1266932A Floor drain |
| 09/13/2000 | EP1035262A2 Sewage lifting device |
| 09/13/2000 | EP0858587B1 Sewer construction |
| 09/06/2000 | CN2394977Y Mouse preventer for drainage pipeline system |
| 08/31/2000 | DE19916420C1 Residual fluid removal from lines and plant involves direct flow from compressor or by sludge tank underpressure using multi-way valves thus also drying lines inside. |
| 08/30/2000 | EP1030951A1 A mobile unit and method for purifying sludge and waste water |
| 08/29/2000 | US6111600 Extended-reach sewer inspection device |
| 08/22/2000 | US6108597 Autonomous mobile robot system for sensor-based and map-based navigation in pipe networks |
| 08/15/2000 | US6101951 Robot for the repair of sewer pipes |
| 08/09/2000 | CN2390931Y Four-protection of sewer outlet |
| 08/01/2000 | US6095179 Flood control valve assembly |
| 07/27/2000 | DE19902660A1 Pipe inspection camera has pivoting head and external illumination mounted on the outer dia. of the camera housing in a circle |
| 07/19/2000 | CN1260429A Excrement and urine conveying apparatus |
| 07/18/2000 | US6089254 Sewer construction |
| 07/05/2000 | CN1258789A Choke-preventing screen for sewer |
| 06/29/2000 | DE19858314A1 Installation for central recording of volumetric rate of flow of waste water |
| 06/28/2000 | EP1013838A1 Waste transport arrangement |
| 06/27/2000 | CA2053243C Apparatus for use in renovation of tube systems in particular sewer tube systems |
| 06/27/2000 | CA2024023C Vacuum-type sewage collecting apparatus |
| 06/23/2000 | CA2291664A1 Waste transport arrangement |
| 05/30/2000 | CA2200617C Filter cartridge for separating liquid hydrocarbons from water |
| 04/27/2000 | DE19848770A1 Arrangement for detecting changes in quantity of liquid in ducting or storage systems has buoyant body partially immersed in liquid coupled via a force transfer device to weighing device |
| 04/26/2000 | EP0995848A2 Intake device for sucking up loose material, particularly waste, mud, faeces or the like |
| 04/05/2000 | CN2372380Y One-way drainer |
| 03/30/2000 | DE19943282A1 Process to remove sludge sediment from a waste water treatment basin in layers minimizes disruption to continuing water treatment processes |
| 03/30/2000 | DE19843272A1 Two or more maintenance robots operated simultaneously from the same control unit reduces the cost of robotic sewer maintenance |
| 03/08/2000 | CN2367644Y Floor drain |
| 02/29/2000 | US6029684 Sewer inspection chamber with back-flow prevention valve |
| 02/16/2000 | CN2364095Y Circular theftproof antisoiling manhole cover device |
| 02/10/2000 | WO2000006932A2 Method for redeveloping or renovating sewer drains and sewer ducts |
| 02/10/2000 | CA2338731A1 Method for redeveloping or renovating sewer conduits and sewer ducts |