| Patents for E03F 9 - Arrangements or fixed installations for cleaning sewer pipes, e.g. by flushing (1,182) |
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| 05/25/1993 | US5213120 Method and apparatus for generating foam within a pipe |
| 05/19/1993 | EP0542212A1 Device for the cleaning of pipes |
| 04/20/1993 | US5203361 Recreational vehicle holding tank hose cleaning |
| 04/06/1993 | US5199129 Torque monitoring system for rotary drain and sewer cleaning apparatus |
| 03/16/1993 | US5193245 Apparatus for opening drains |
| 03/16/1993 | US5193242 Wasteline cleanout apparatus |
| 03/10/1993 | EP0530650A1 Pipe cleaning device |
| 02/04/1993 | DE4125315A1 Equipment for cleaning water pipes etc. - delivers alternate water and air pulses from injector pump whose mixer tube is uncovered as float controlled water level drops in container |
| 01/19/1993 | CA2010185C Portable drain cleaning apparatus |
| 12/29/1992 | US5173984 Self-drying powered drain auger |
| 11/24/1992 | US5165434 Apparatus for applying dry herbicides to flora infestations within sewer lines |
| 11/05/1992 | DE4113344A1 Unloading bays for large storage waste disposal - has bays arranged circumferentially to allow for safer inspection and processing of discharged materials |
| 10/15/1992 | DE4111438A1 Cleaning device for water drainage pipes and sewers - consists of small pipe with holes in its wall which sprays water onto surface of main pipe |
| 10/01/1992 | DE4137768C1 Automatic hoist with downwards open bell - has outlet tube, whose top end retains movably top-open float pot |
| 09/03/1992 | DE4102624A1 Sewage pipe cleaning system - uses pressurised water to remove, dissolve and suspend deposits, screened from sewage |
| 08/18/1992 | US5139751 Transport vehicle with rotatable reel |
| 07/22/1992 | EP0494934A1 Apparatus and method for clearing sewers |
| 07/22/1992 | CN2110670U Civil cleaner for sewer pipe |
| 06/17/1992 | EP0467962A4 Foundation drain cleaning apparatus and method |
| 06/16/1992 | US5122193 Cleaning module for towing through pipeline |
| 05/20/1992 | EP0486379A1 Material transporting apparatus, engine provided with such system and method for cleaning ducts |
| 05/01/1992 | WO1992007786A1 Apparatus for projecting devices through tubes and conduits |
| 05/01/1992 | CA2094385A1 Apparatus for projecting devices through tubes and conduits |
| 04/28/1992 | US5107550 Sewer pipe unplugging tool |
| 04/21/1992 | US5105504 Apparatus and method for opening drains |
| 04/21/1992 | US5105498 Device for cleaning a sewer |
| 03/11/1992 | EP0428509A4 Improved drain-cleaning implement |
| 02/25/1992 | US5090079 Apparatus for cleaning pipe |
| 02/20/1992 | WO1992002285A1 Improved pipe cleaning modules and systems and methods for their use |
| 01/29/1992 | EP0467962A1 Foundation drain cleaning apparatus and method |
| 01/28/1992 | US5083500 Radon treatment system and method |
| 01/21/1992 | US5081800 Vehicular device designed to operate in enclosed canals |
| 01/16/1992 | DE4021858A1 Inserting pipe or tube into elongated duct - involves compressor, discharge piece, outlet and deflector |
| 01/14/1992 | WO1992001121A1 Apparatus and method for cleaning pipe |
| 01/14/1992 | US5080004 Clean-out pipe receptacle |
| 01/14/1992 | CA2087269A1 Apparatus and method for cleaning pipe |
| 01/02/1992 | EP0333859B1 Device for cleaning pipelines |
| 11/13/1991 | CN2088571U Sewer dredging device |
| 10/17/1991 | DE4104795A1 Cleaning pipes and ducts - involves valve which also stems flow of or diverts water in them |
| 10/15/1991 | US5056269 Apparatus for working in pipes |
| 10/15/1991 | US5056178 Plumbing tool which has a novel chuck and method of joining the shaft to the case |
| 10/15/1991 | US5056177 Cleanout apparatus |
| 10/15/1991 | US5056176 Cutter assembly for rotary drain cleaner |
| 08/28/1991 | EP0443290A2 Drain cleaning machine |
| 08/28/1991 | EP0443109A1 Device for cleaning of sewer conduits |
| 08/27/1991 | US5042515 Operator protection for high pressure hose machines |
| 08/22/1991 | CA2035858A1 Device for cleaning a sewer |
| 07/25/1991 | DE4038719A1 Passage-flushing equipment with siphon - has vent pipe connected to bell sliding vertically and lockable |
| 07/16/1991 | US5031276 Drain cleaning machine |
| 07/16/1991 | US5031263 Drain cleaning machine |
| 07/09/1991 | US5029356 Sewer augering apparatus |
| 06/19/1991 | EP0432230A1 Use of a device for power supply |
| 05/29/1991 | EP0428654A1 Vacuum collecting vessel for flushing water |
| 05/29/1991 | EP0428653A1 Flushing siphon bag for flushing sewers or the like. |
| 05/29/1991 | EP0428509A1 Improved drain-cleaning implement. |
| 05/28/1991 | US5018234 Drain auger |
| 04/23/1991 | US5009715 Cleaning upper interior walls of sewage pipes to prevent build-up of acid-producing bacteria |
| 04/23/1991 | US5009242 Apparatus for monitoring sewer cleaning tool extension |
| 04/18/1991 | WO1991005116A1 Apparatus and method for clearing sewers |
| 04/18/1991 | WO1991005115A1 Sewage flushing apparatus |
| 04/09/1991 | CA1282560C Drain-cleaning implement |
| 03/07/1991 | WO1991002602A1 Device for cleaning vertical ducts in buildings |
| 02/26/1991 | US4995132 Guiding device for spiral pipe cleaners |
| 02/21/1991 | DE3927064A1 Clean-out device for partly full sewers - with pneumatic transport through hoses on polyurethane foam floats |
| 02/19/1991 | US4993443 Sewer pipe cleaning accessory |
| 02/13/1991 | CN2071220U Hand press grab bucket |
| 01/09/1991 | EP0407327A1 Portable drain cleaning apparatus |
| 01/01/1991 | US4981524 Herbicidal foam application |
| 01/01/1991 | US4981150 Foundation drain cleaning apparatus and method |
| 12/27/1990 | EP0403509A1 Advertising device |
| 12/13/1990 | WO1990015201A1 Vacuum collecting vessel for flushing water |
| 12/13/1990 | WO1990015200A1 Flushing siphon bag for flushing sewers or the like |
| 12/13/1990 | WO1990015199A1 Pressure-generating hollow body |
| 12/13/1990 | WO1990015198A1 Pipe system |
| 12/06/1990 | WO1990015290A1 Radon treatment system and method |
| 12/06/1990 | CA2033212A1 Radon treatment system and method |
| 12/04/1990 | US4974617 Using liquid harmonic longitudinal pressure waves |
| 12/04/1990 | US4974280 Snake directing tool |
| 11/07/1990 | EP0395646A1 Root-repelling pipe joints |
| 11/01/1990 | WO1990012661A1 Foundation drain cleaning apparatus and method |
| 09/18/1990 | US4957123 Device for cleaning a drain |
| 09/18/1990 | US4956889 Portable drain cleaning apparatus |
| 08/28/1990 | CA1273163A1 Multiple use drain cleaning apparatus |
| 08/28/1990 | CA1273161A1 Pipe cleaning machine |
| 07/31/1990 | US4944465 Spring driving and winding machine |
| 07/31/1990 | US4944320 Chemical control of root growth in sewers and the like |
| 07/31/1990 | US4944258 Operator protection for high pressure hose machines |
| 06/28/1990 | DE3843514A1 Method for preventing sintering of drainages and apparatus for carrying out the method |
| 06/27/1990 | EP0375592A1 Retainer mechanism for drain cleaner drum |
| 06/12/1990 | US4933018 High pressure hose pulsation cleaning method |
| 06/12/1990 | US4933017 Vacuum source, pressure source and control manifold |
| 05/30/1990 | CN2057683U Hand managing cleaning machine |
| 05/10/1990 | DE3836277A1 Manipulator arm |
| 05/02/1990 | EP0365921A2 Device for navigating closed canals |
| 04/26/1990 | DE3836278A1 Device for blasting, or the like, the inner surfaces of channels with granular material |
| 04/25/1990 | CA2001305A1 Vehicular device designed to operate in enclosed canals |
| 04/24/1990 | US4919558 Pipe cleaning head adapter |
| 04/18/1990 | EP0363424A1 Apparatus for working in pipes |
| 04/17/1990 | US4916772 Portable drain cleaning apparatus |
| 04/10/1990 | US4914775 Retainer mechanism for drain cleaner drum |