| Patents for E03F 3 - Sewer pipe-line systems (3,593) |
|---|
| 11/08/1994 | US5361799 Waste water access fitting |
| 11/03/1994 | DE4400166A1 Method of producing internal plastic coatings or the like in existing pipelines as well as a device for carrying out the method |
| 11/03/1994 | DE4314110A1 Process for fitting a sealing ring onto the end of a concrete pipe, and sealing member for concrete pipe |
| 11/02/1994 | CN2181537Y Multipurpose wastewater discharge pipe installation |
| 10/27/1994 | DE4242073A1 Pipe-laying machine |
| 10/26/1994 | EP0620836A1 Deteriorated structure repair method and substratum for restoring and lining corroded structure |
| 10/19/1994 | EP0620398A1 Apparatus for in-situ lining an underground main |
| 09/29/1994 | DE4309403A1 Mechanical shielding of shaped parts against ground pressure |
| 09/20/1994 | US5348421 Trench forming assembly and method |
| 09/15/1994 | WO1994021018A1 Cable duct element |
| 09/15/1994 | WO1994020687A1 Method for manufacturing a tire containing concrete |
| 09/13/1994 | US5347136 Conduit construction laser system and laser beam receiver |
| 09/13/1994 | US5346658 Method for installing a pipe liner |
| 09/07/1994 | EP0613538A1 Seal between two interlocking components. |
| 09/07/1994 | EP0613537A1 Seal between two interlocking concrete components. |
| 08/24/1994 | CN2175270Y Apparatus for the prevention of sewer pipe during construction |
| 08/23/1994 | US5340234 Trench drain system and installation method |
| 08/17/1994 | EP0610690A1 Method and apparatus for the manufacture of a spigot end on a concrete or reinforced concrete pipe |
| 08/11/1994 | DE4403342A1 Apparatus for working the end of a concrete or reinforced-concrete pipe |
| 08/11/1994 | DE4314222C1 Wall lead-through on a concrete vessel |
| 07/27/1994 | CN2172785Y Concrete sewer pipe |
| 07/12/1994 | US5328608 Mutli-lateral filter underdrain block |
| 07/12/1994 | US5327924 Abandonment of a branch main |
| 07/05/1994 | US5326190 Method and apparatus for stabilizing a trench form during construction |
| 07/05/1994 | US5326189 Method and apparatus for forming a trench with grates or solid covers |
| 06/29/1994 | EP0603775A1 Method for making a sealed connection between a pipe and a pipe connector, and pipe connector used therefor, which can be tightened |
| 06/15/1994 | EP0601445A1 Surface drainage device |
| 06/15/1994 | EP0601442A1 Pipe laying process having simultaneous driving press |
| 06/15/1994 | CN2168899Y Assembled plastic attachment box for drainer |
| 06/11/1994 | CA2111131A1 Surface drainage apparatus |
| 06/09/1994 | DE4325510A1 Joining last pipe to pipeline laid in ditch - involves draw cable operated by power source attached to movable frame spanning ditch with mast extending down to brace against end of front pipe |
| 06/08/1994 | CN2168026Y Glassfibre reinforced plastic drain pipe for buildings |
| 06/07/1994 | US5319187 Laser beam receivers and canal building laser devices |
| 06/01/1994 | EP0530203B1 Improvement in a sewage system |
| 05/26/1994 | WO1994011666A1 Plug-in sleeve joint |
| 05/26/1994 | WO1994010408A3 Deteriorated structure repair method and substratum for restoring and lining corroded structure |
| 05/26/1994 | DE4325090C1 Hydraulic setting cement - contg. additives to ensure high early strength at low temperatures. |
| 05/26/1994 | DE4238982A1 Cover tube for renovating drains or similar - consists of resin-impregnated, e.g., glassfibre tube of suitable shape which is pressed against drain, etc., until its impregnant has set hard |
| 05/25/1994 | EP0598331A1 Spigot and socket joint |
| 05/25/1994 | CN2166171Y Structure for sewer head |
| 05/24/1994 | CA1329753C Liquid level control system |
| 05/11/1994 | WO1994010408A2 Deteriorated structure repair method and substratum for restoring and lining corroded structure |
| 05/10/1994 | US5309947 Apparatus for lining an inside wall of a sewer pipe |
| 04/28/1994 | WO1994009213A1 Method and apparatus for stabilizing a trench form during construction |
| 04/28/1994 | DE4308547C1 Trenchless pipe laying system with hydraulic/pneumatic drive - has pipe sections joined by profiled sleeve and with ram on rear section and flushing head on front of pipeline |
| 04/21/1994 | DE4235268A1 Sleeve connection of hardened material such as steel reinforced concrete, concrete or synthetic resin - has a pointed pipe end acting as insertion piece and includes elastomeric sealing ring and anchor foot |
| 04/13/1994 | CN2161654Y Improved drain pipe |
| 04/13/1994 | CN2161653Y Stereoscopic sewer pipe-line system for draining-off sewage |
| 04/13/1994 | CN2161652Y Closed ring of plain end tube for sewer pipeline |
| 03/31/1994 | WO1994007074A1 Seal between two interlocking components |
| 03/31/1994 | WO1994007073A1 Seal between two interlocking concrete components |
| 03/31/1994 | DE4232907A1 Rubber like sealing material that swells on contact with water - useful for sealing of joints against water penetration and shows good stability to cycling between wet and dry conditions |
| 03/31/1994 | DE4232059A1 Pipe joint renovation - has packer to inject sealing mass into inaccessible pipe joints esp. in sewage system |
| 03/31/1994 | DE4231961A1 Sewage channel or pipe repair - using longitudinal carrier with carrier units to apply radial holding pressure on lining for inner side of channel |
| 03/30/1994 | EP0589829A1 Drainage channel |
| 03/23/1994 | CN2159424Y Automatic controller for drain pedestal |
| 03/17/1994 | DE4237645C1 Steckmuffenverbindung Socket joint |
| 03/10/1994 | DE4230112A1 Liquid-tight sealing together of concrete pipe ends - involves connecting rings and grooves in pipe ends filled with plastic sealing material and excess is squeezed outwards as ends are butted together |
| 03/10/1994 | DE4229829A1 Sealing of branch pipe into side of large-dia. concrete pipe - involves reinforcing plates anchored in grout inside main pipe and liner pipe sealed into branch pipe |
| 03/09/1994 | EP0433440B1 Pipe connection for advance working pipes laid underground by an advance working technique |
| 03/08/1994 | US5291917 Housing for a vacuum valve unit |
| 03/03/1994 | WO1994004758A1 Apparatus for forming a multi-walled containment trench |
| 03/03/1994 | DE4228387A1 Domestic sewage outflow - has sepn. of solid and fluid phases to allow only fluid to pass through collection channel into the sewage disposal system |
| 03/03/1994 | CA2139428A1 Apparatus for forming a multi-walled containment trench |
| 03/01/1994 | US5290045 Seal for joint, and method of installing same seal |
| 02/16/1994 | CN1082135A Method of repairing buried sewage pipes |
| 02/03/1994 | DE4319433A1 Field gap seal for pipelines in concrete jacket - involves plastics strips, surrounding pipeline, wound in gap. |
| 01/25/1994 | US5281053 Underground tubular structural system and process for producing it |
| 01/25/1994 | US5281052 Multi-containment trench system |
| 01/25/1994 | US5281051 Trench forming assembly and method |
| 01/20/1994 | WO1994001907A1 Cable channelling |
| 01/20/1994 | DE4223406A1 Underground drilling appts for domestic sewer pipe laying - is equipped with tubular extension pieces for advancing pipe sections and with clutch arrangements for extn from laid pipe |
| 01/19/1994 | CN2153592Y Protective cover structure for drainage hole |
| 01/18/1994 | CA1326129C Method of renovating and/or protecting sewers and pipes |
| 01/05/1994 | DE4220880A1 Waste water channels in dividing system with storage possibility for rain water - are composed of prefabricated pipes with covers and separate conduits for rain and dirty water, |
| 01/05/1994 | CN1080348A Sewer pipe of glass fibre reinforced plastic and making method thereof |
| 12/29/1993 | EP0576102A1 Cutter comprising several parts, combination of the gutter and paving elements, method for the production of the gutter and auxiliary element used for the production |
| 12/23/1993 | WO1993025771A1 Drywell cover and drywell |
| 12/23/1993 | CA2138386A1 Drywell cover and drywell |
| 12/22/1993 | CN2150261Y Outside anti-theft sewer pipe |
| 12/16/1993 | DE4219528A1 Elastomeric seal for sleeved pipe connection - has seal of independent profile accommodating differences in pipe diameters |
| 12/16/1993 | DE4217583C1 Sealing testing device for drainage pipe connection - monitors raised or reduced pressure of test fluid in hollow space between two elastomer pipe seals supplied with test medium. |
| 12/15/1993 | CN2149434Y Pipe element for water-gas separation |
| 12/09/1993 | DE4227417C1 Cement mix for injection into very long annular gap, e.g. for sewer repair - contains Portland cement, liquidiser and lead cpd. to stabilise viscosity without impairing green strength and final strength |
| 12/08/1993 | CN2148790Y Safety drainage device |
| 12/07/1993 | US5268392 For concrete; applying a hydrogenated resin; curing |
| 12/02/1993 | DE4235355C1 Pipe or cable laying system - has removed trench material used for refilling trench after dosing with cement or lime |
| 12/01/1993 | EP0572083A2 Improved multi-lateral filter underdrain block |
| 12/01/1993 | EP0493415B1 Process and device for overhauling drains |
| 11/28/1993 | CA2096377A1 Dual lateral filter underdrain block |
| 11/18/1993 | DE4215926A1 Lining canalisation pipes - using rigid lining pipe comprising hose-shaped fibre layer saturated with hardenable resin and having plastic foil in both sides |
| 11/17/1993 | CN1078522A Gas-water one-way valve of drainage pipe |
| 11/11/1993 | DE4214476A1 Mechanism for repair cladding of sewers - has inlet duct of spray head with trumpet-shaped transition into annular duct |
| 11/10/1993 | EP0569185A1 Improvements in the lining of sewers and the like |
| 11/02/1993 | CA1323770C Root repelling pipe joints |
| 10/28/1993 | WO1993021399A1 System and process for relining channel pipe sections |
| 10/28/1993 | WO1993021398A1 System and process for relining channel pipe sections with inspection facilities |
| 10/28/1993 | DE4213068A1 System und Verfahren zum Relining von Kanalrohrabschnitten System and Method for relining of sewer pipe sections |
| 10/27/1993 | EP0566978A2 Use of a copper-aluminium-zinc alloy as corrosion resistant material |
| 10/26/1993 | US5256000 Apparatus for forming a multi-walled trench |