| Patents for E03F 7 - Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools (2,571) |
|---|
| 01/03/1991 | DE3922969A1 Suction pipe coupling for pumping sewage - has by=pass fitted with shut=off valve |
| 12/27/1990 | EP0404170A1 Installation for the suction of fluids |
| 11/27/1990 | US4973950 Sewer blockage alarm |
| 11/20/1990 | CA1276524C Sewer check valve with cutting seat |
| 10/27/1990 | WO1990012979A1 Apparatus for use in renovation of tube systems, in particular sewer tube systems |
| 10/11/1990 | DE3911444A1 Fine filter for purification of liquids |
| 10/09/1990 | US4962370 Off-center cap-level magnetic float sewer alarm |
| 10/02/1990 | US4961068 Domestic sewer alarm |
| 09/20/1990 | DE3908216A1 Apparatus for cleaning sewers |
| 09/19/1990 | EP0387759A2 Sewer cleaning vehicle |
| 09/19/1990 | EP0387758A2 Sludge suction vehicle |
| 09/19/1990 | CN2062353U Open horizontal air-damping basin |
| 09/06/1990 | DE4006785A1 Blocking control for pipeline - incorporates expanding membrane stretched under inspection hatch and inflated to seal pipe |
| 08/21/1990 | US4950356 Method of and apparatus for lining pipes |
| 08/21/1990 | US4949626 Protective system |
| 08/15/1990 | CN2060457U Kitchen edible oil-draining device |
| 08/15/1990 | CN2060456U Coal gas waste water truck |
| 08/14/1990 | US4948298 Process for restoring channels threatening to collapse, in particular profiled channels |
| 08/02/1990 | DE3901632A1 Duct shut-off member |
| 08/01/1990 | CN2059928U Piston type dredger for toilet and floor drain |
| 07/24/1990 | US4942898 Automatic culvert directional flow control device |
| 06/26/1990 | US4936350 Sewage system isolation valve assembly |
| 06/26/1990 | US4935984 Vacuum refuse collecting vehicle |
| 06/14/1990 | WO1990006405A1 Platform vehicle for inspection of tubular shafts |
| 06/13/1990 | EP0258324B1 Process for restoring channels threatening to collapse, in particular profiled channels |
| 06/12/1990 | US4932080 Retractable guard for sewage pipes |
| 06/07/1990 | DE3840747A1 Buehnenfahrzeug fuer schachtroehren-inspektionsarbeiten Buehnenfahrzeug for schachtroehren-inspection work |
| 05/29/1990 | US4928727 In a drainage system for a dwelling having a basement |
| 05/17/1990 | WO1990005267A1 Internal pipe repair sleeve and liner |
| 05/15/1990 | US4924898 Vacuum assisted material mover |
| 05/08/1990 | US4922571 Vacuum loading machine |
| 05/01/1990 | US4922234 Sewer alarm |
| 04/25/1990 | EP0365513A1 Tanker vehicle, especially a sludge suction vehicle |
| 04/25/1990 | CN2056436U Sealed drainage comb-like device |
| 04/11/1990 | CN2055835U Dredging device for lavatory |
| 04/05/1990 | WO1990003474A1 Method of removing and purifying sludges and waste water and apparatus herefor |
| 03/22/1990 | DE3831738A1 Device for sealing manhole covers or the like |
| 03/21/1990 | EP0358672A1 Back flow blocker in sloping pipes. |
| 03/15/1990 | DE3830258A1 Sewage (waste water) fitting |
| 02/22/1990 | WO1990001590A1 Suction waggon for disposal of sludges and liquids |
| 02/08/1990 | WO1990000651A3 Water backup preventing system and monitoring system therefor |
| 02/08/1990 | DE3826140A1 Suction vehicle for disposing of sludge and fluids |
| 02/07/1990 | EP0353547A1 Gulley emptying vehicule for removal of sludge and liquid |
| 02/06/1990 | USRE33160 Method and apparatus for inspecting lateral lines |
| 02/01/1990 | DE3924229A1 Exclusion of small animals from drainage pipes - involves device with swinging arms forming grid which does not impede flow of water |
| 02/01/1990 | DE3900133A1 Shut-off device for ducts, shafts or the like |
| 01/31/1990 | EP0353034A2 Method and apparatus for draining waste pits |
| 01/30/1990 | US4896542 Portable wastewater flow meter |
| 01/25/1990 | WO1990000652A1 Closure device for drainpipes |
| 01/25/1990 | WO1990000651A2 Water backup preventing system and monitoring system therefor |
| 01/18/1990 | DE3823614A1 Method and installation for flow measurement |
| 01/17/1990 | CN1038858A Method and apparatus for controlling pumps in drainage system |
| 01/11/1990 | DE3922400A1 Lorry with a pivotable hose capable of being reeled out and reeled in, for cleaning sewers |
| 01/11/1990 | DE3822107A1 Process for the securing of sieving, discharging and transferring locations for environmentally hazardous liquids |
| 01/09/1990 | US4892440 Water backup preventing system and monitoring system therefor |
| 12/06/1989 | EP0344151A1 Means for repairing pipes by remote-controlled insertion of a lining |
| 11/14/1989 | US4879771 Floor clean-out assembly |
| 10/19/1989 | WO1989009858A1 A rodent barrier |
| 10/19/1989 | DE3909901A1 Backflow preventer |
| 10/19/1989 | DE3811943A1 Method and apparatus for examining waste water (effluent) discharges into waste water channels and bodies of water for heavy metal content |
| 10/04/1989 | EP0334917A1 Process for repairing pipes |
| 10/04/1989 | EP0334870A1 A method of and apparatus for lining pipes. |
| 09/26/1989 | CA1261940A1 Water backup alarm system |
| 09/12/1989 | US4865631 Vacuum sewage system |
| 09/06/1989 | EP0331012A1 Device for the suction removal and delivery of fine deposits from a raw water zone into a sludge collection zone |
| 08/30/1989 | EP0330490A1 Vacuum sewage system, waste tank therefor and transport vehicle incorporating such a system |
| 08/23/1989 | EP0329046A1 Device for sealing gully inlets |
| 07/13/1989 | DE3744409A1 Process and apparatus for reducing gas emissions from flowing, fluid media with volatile contents |
| 06/27/1989 | US4843575 Interactive dynamic real-time management system |
| 06/13/1989 | US4838732 Elastomeric sealing device |
| 06/13/1989 | US4838302 Sewer cleaning equipment |
| 06/08/1989 | DE3833561A1 Device for the liquid-tight closure of building openings, basin (tank) openings, lock openings or the like |
| 06/08/1989 | DE3739303A1 Backflow preventer |
| 06/07/1989 | EP0319179A1 Jet nozzle for propelling an apparatus along a conduit and apparatus provided with such a jet nozzle |
| 05/30/1989 | US4834142 Flow rate controller |
| 05/24/1989 | EP0316584A1 Purging pipe |
| 04/20/1989 | WO1989003459A1 Process for repairing pipes |
| 04/19/1989 | CN2036071U Pipe cleaner |
| 04/06/1989 | WO1989003003A1 Process and means for repairing pipes by remote-controlled insertion of a lining |
| 04/06/1989 | DE3732565A1 Nonreturn valve |
| 03/28/1989 | US4816167 Portable system for dewatering contents of sanitary sewer traps |
| 03/28/1989 | US4815492 Flood control system |
| 03/22/1989 | EP0307698A1 Kit of parts comprising a cleaning pipe for continuous sewage |
| 02/22/1989 | CN2033029U Dredging machineshop car |
| 02/21/1989 | USRE32870 Sewer relief valve |
| 02/08/1989 | EP0302174A1 Drainage gully with a subsequently fittable quick-closure device |
| 01/31/1989 | US4800917 Fluid actuated gate valve assembly |
| 01/24/1989 | US4799388 Apparatus and technique for metering liquid flow |
| 01/10/1989 | US4797028 Beaver control siphon apparatus |
| 12/27/1988 | US4793386 Apparatus and method using portable pump |
| 12/14/1988 | EP0294607A1 Two chamber waste disposal container |
| 11/30/1988 | CN88200642U Automatic controller for multifunctional test of mud-removal |
| 11/23/1988 | EP0291830A1 Waste disposal vehicle |
| 11/23/1988 | EP0291829A2 Hopper for a pneumatic suction or pressure conveyor system |
| 11/17/1988 | WO1988008939A1 Device for operation in pipelines |
| 11/09/1988 | CN88204122U Interconnection device for sewer and branch pipe |
| 11/03/1988 | WO1988008471A1 Back flow blocker in sloping pipes |
| 10/11/1988 | CA1242954A1 Eductor truck |
| 10/05/1988 | EP0285144A2 Mobile device for extracting harmful liquids |
| 09/28/1988 | EP0283864A1 Sewage anti-backflow valve |