| Patents for E03F 3 - Sewer pipe-line systems (3,593) |
|---|
| 07/26/1991 | WO1991011283A1 Lateral cutter device |
| 07/26/1991 | CA2074731A1 Lateral cutter device |
| 07/23/1991 | CA1286581C Process and apparatus for installing a new pipe inside an existing pipe |
| 07/16/1991 | CA1286337C Quick disconnect for sewage system |
| 07/11/1991 | WO1991010862A1 Method for lining the inside of an accessible pipe and tunnel ring for implementing same |
| 07/11/1991 | CA2073433A1 Method for lining the inside of an accessible pipe and tunnel ring for implementing same |
| 07/09/1991 | US5029907 Band for effecting a seal |
| 06/26/1991 | EP0433440A1 Pipe connection for advance working pipes laid underground by an advance working technique. |
| 06/26/1991 | EP0433333A1 Constructional member and method. |
| 06/26/1991 | CN2079635U Improved water back bending |
| 06/20/1991 | DE4031741A1 Repair and renovation of sewage pipe - by applying sealing liq. at high pressure to inside surface |
| 06/20/1991 | DE3941884A1 Concrete water drainage pipe - consists of lengths joined end-to-end with sealing ring between end faces |
| 06/20/1991 | DE3941513A1 Drain-pipe carrying waste water - has circular cross=section and is divided in separate ducts by a parabolic wall |
| 06/12/1991 | EP0430936A1 Method and apparatus for internally lining a duct |
| 06/06/1991 | DE3939599A1 Plastics branch pipe and concrete sewer - are connected by joint sealed with two-component adhesive applied by hand |
| 06/05/1991 | CN2078349U Flexible joint drain pipe with hard polyvinyl chloride clamping sleeve |
| 05/29/1991 | DE3938765A1 Drainage pipe renewal process - uses driving tube surrounding old pipe and fitted with guide body |
| 05/29/1991 | DE3938721A1 Drainage channel system for prefab. concrete elements - uses clamping device and clamp bracket for element jointing |
| 05/23/1991 | DE4030238A1 Pluggable drain pipe of recycling material - is cast in mixt. of shredded tyres, non-gasifying plastics and binder |
| 05/22/1991 | CN2077462U T-type water storage |
| 05/08/1991 | EP0426147A2 Concrete pipe having a corrosion resistant inner lining, suitable pipe connection pieces and sealing arrangements integrated into the end pieces of the pipes |
| 05/08/1991 | DE4034953A1 Concrete pipe with anti-corrosion inner living |
| 05/08/1991 | DE3936625A1 Grooved gutter or pipe - causes inner spiral flow and secondary flow |
| 05/04/1991 | CA2029144A1 Concrete pipe with a lining resistant to corrosion and with fitting connecting members and furthermore with sealing means integrated in the terminal parts of the pipe |
| 04/25/1991 | DE3934980A1 Renovating buried pipe underground - involves using storage drum for plastics hose, with outlet and duct shaft |
| 04/24/1991 | EP0423640A2 Device for constructing a sealing connection between a main conduit and a side conduit with a connector |
| 04/11/1991 | DE3932864A1 Drain gutter for surface drainage system - has pipeline coupled to gutter line, with pipeline outlet below gutter line bottom |
| 04/11/1991 | DE3931616A1 Verfahren und einrichtung zum sanieren von abwasserkanaelen Method and device for clean up of abwasserkanaelen |
| 04/04/1991 | WO1991004437A1 Process and device for cleaning drains |
| 04/04/1991 | DE3931775A1 Coating machine for interior of sewers - consists of cylinder drawn along in sewer and has outer inflated rubber sleeves with annular space fed with sealing material |
| 03/23/1991 | CA2025725A1 Large-calibre pipe of thermoplastic material |
| 03/20/1991 | EP0417876A1 Pipe element for assembling a canal |
| 03/19/1991 | US5000621 Apparatus for forming a trench |
| 03/07/1991 | DE4021456A1 Renovation of localised damage in sewer pipes - in which resin impregnated mat is expanded against damaged wall and tapered resin rings are formed by inflation jacket at repair ends |
| 03/07/1991 | DE3929558A1 Sealing joint between mains drain and house connection - involves resin-impregnated insert, placed into house pipe without excavation of ground |
| 03/06/1991 | EP0415361A2 Pipe connection structure and vacuum-type sewage collecting apparatus incorporating the pipe connection structure |
| 03/06/1991 | EP0415360A2 Vacuum-type sewage collecting apparatus |
| 02/27/1991 | EP0413767A1 Process for waterproofing a deteriorated drainage channel and giving it mechanical strength and chemical resistance |
| 02/27/1991 | CN1011804B Device of suctorial transfer system used for liquid |
| 02/21/1991 | WO1991001943A1 Combined structure for drainage and/or partial or complete purification of flowing liquids, in particular waste water and/or rain water, and waste water clarification reactor |
| 02/21/1991 | DE3926879A1 Coupling seal for concrete drainage pipes - has inner elastomeric hose seal fitted in radial space between pipe ends and subjected to internal gas pressure |
| 02/19/1991 | US4993878 Method and apparatus for forming a trench |
| 02/19/1991 | US4993877 Method and apparatus for forming a trench |
| 02/19/1991 | US4993722 Apparatus and method for improved pipe to manhole sealing |
| 02/05/1991 | US4990028 Anti-friction composition containing MgO and method |
| 01/31/1991 | DE3923707A1 Machine for replacing underground pipes - consists of pipe thrust drive with starting and finishing pits |
| 01/30/1991 | CN2070327U Compound material thermo-insulated pipe line |
| 01/30/1991 | CN1011425B Pipe line or pipe components |
| 01/17/1991 | DE3922481A1 Flow regulator esp. for waste water channels - varies plane of curvature of curved tube section to adjust flow cross-section, ensuring uniform flow |
| 01/13/1991 | WO1991000974A1 Pipe connection for advance working pipes laid underground by an advance working technique |
| 01/08/1991 | US4982490 Method of lining a fluid conduit |
| 01/02/1991 | EP0405163A1 Plastic piping for ducting reconstruction |
| 12/28/1990 | CA2019405A1 Plastic pipe for sewer pipe reconstruction |
| 12/27/1990 | EP0403737A1 Method and device for sealing the branch junctions of sewer pipes |
| 12/19/1990 | EP0402844A2 Arrangement at a hollow construction embedded in the ground for the transportation or storage of polluting liquids |
| 12/13/1990 | WO1990015198A1 Pipe system |
| 12/12/1990 | CN2067301U Five-way joint |
| 11/29/1990 | DE3916761A1 Concrete structure forming part of water drainage system - has socket fitted with sealing sleeve to receive concrete pipe |
| 11/22/1990 | DE3914736A1 Pipe laying machine for concrete or stone pipes - consists of milling unit, with basket with back outlet and underneath cutter, with retainer |
| 11/15/1990 | DE3915714A1 Piping mains repairing machine - applies lining from inside which is resistant to acid and alkali and adjustable |
| 11/14/1990 | EP0397448A2 Device for working inside of pipes |
| 11/07/1990 | EP0395934A1 Method and device for the construction and/or the reconditioning of pipelines and conduits |
| 11/07/1990 | EP0395646A1 Root-repelling pipe joints |
| 11/07/1990 | CN2065213U Special building-drainage pipe with double spigot and socket joint |
| 11/06/1990 | CA1275813C Large diameter burried pipe |
| 11/05/1990 | CA2014902A1 Method and device for the construction and/or the reconditioning of pipelines and conduits |
| 10/31/1990 | EP0395628A2 Machining device for working the inner wall of an underground channel profile, in particular when non-circular |
| 10/31/1990 | CN2064790U Tee pipe with cleaning mouth |
| 10/27/1990 | WO1990012979A1 Apparatus for use in renovation of tube systems, in particular sewer tube systems |
| 10/25/1990 | DE3913325A1 Municipal services conduit seal - comprises protruding rubber frame fitting in peripheral recess in cover |
| 10/25/1990 | DE3913318A1 Non-passable pipe repair - by packer and polyurethane resin injection |
| 10/25/1990 | DE3913317A1 Non-passage pipe repair - by packer and silicate resin injection |
| 10/25/1990 | DE3912765A1 Sealant swollen by water for concrete sewage pipe - obtd. by curing (meth)acrylate monomer, polymer of bitumen dispersion, swelling filler etc. |
| 10/18/1990 | DE3912103C1 Underground replacement of damaged sewer pipe sections |
| 10/17/1990 | EP0392894A1 Underground tubular construction and method for its construction |
| 10/17/1990 | EP0392583A2 Device for replacing damaged sewage pipes |
| 10/10/1990 | EP0391270A1 Use of low shrinkage systems on the basis of unsaturated polyester resins in the restoration of pipe-lines |
| 10/09/1990 | CA1275058A1 Branch members for soil and waste systems |
| 10/04/1990 | WO1990011405A1 Apparatus for forming a trench |
| 10/03/1990 | EP0389885A1 Appliance for breaking open and depressing old pipes into the surrounding earth |
| 09/20/1990 | DE4007296A1 Drainage flume - made of polyester concrete with metallic rim protection profile |
| 09/18/1990 | WO1990011406A1 Method and apparatus for forming a trench |
| 09/18/1990 | CA2048610A1 Method and apparatus for forming a trench |
| 09/18/1990 | CA2048607A1 Apparatus for forming a trench |
| 09/13/1990 | DE3907477A1 Plug-in connection which is secured with respect to axial displacement and is intended for socket pipes |
| 09/12/1990 | EP0386403A1 Separator with a shaft construction for light and/or heavy liquids |
| 09/12/1990 | EP0386096A1 Improvements in or relating to the re-lining of sewers. |
| 09/11/1990 | US4956032 Method of grouting using a vacuum |
| 09/11/1990 | US4955755 Device for the in situ repair of a pipe |
| 09/04/1990 | US4954393 Multilayer; nylon and weldable plastic |
| 09/04/1990 | US4954015 Gutter seal |
| 08/29/1990 | EP0384638A2 Drainage channel |
| 08/28/1990 | US4951914 Pipe seal assembly for poured concrete on-site waste disposal system components |
| 08/28/1990 | US4951758 Method of drilling a branch line aperture after internal lining of a pipeline and a water plug used in the method |
| 08/16/1990 | DE3904524A1 Process for lining pipelines |
| 08/16/1990 | DE3904519A1 Precast concrete members as ditch or water culvert under tracks, roads and other surfaces |
| 08/14/1990 | US4948298 Process for restoring channels threatening to collapse, in particular profiled channels |
| 08/08/1990 | EP0380492A1 Process for repairing structures, objects, in particular sewers and pipes of defective stability and watertightness, without dismantling |
| 08/01/1990 | EP0379707A2 Pneumatic pipe-expanding device |
| 07/19/1990 | DE3900873A1 Plug-in socket seal which is concreted into a pipe socket |