| Patents for E03F 3 - Sewer pipe-line systems (3,593) |
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| 10/21/1993 | DE4212487A1 Renewal of sewage pipes etc. - using perforated foil hose, to inflate foil hose with warmed gas, to harden pipe liner |
| 10/20/1993 | EP0565987A2 Moulded concrete body with good resistance to acids |
| 10/20/1993 | EP0565679A1 Method for the replacement of, in particular, sewage pipes, and a device for carrying out the method. |
| 10/14/1993 | CA2093606A1 Concrete molding with improved acid resistance |
| 10/06/1993 | EP0564068A1 Housing for a vacuum valve unit |
| 10/06/1993 | EP0511363A4 Vacuum sewerage system with increased lift capabilities having electric air admission controllers |
| 10/06/1993 | CN1022346C Inside processing apparatus |
| 09/29/1993 | CN2142860Y Gang controlled anti-blocked device for sewage |
| 09/29/1993 | CN1076751A Installing method of auto-sealed sewer and sealing bowl groove |
| 09/23/1993 | DE4209012A1 Pipe puller for underground pipeline laying - has puller press with hollow ram as axial guide for puller element |
| 09/23/1993 | DE4207038A1 Connection to existing main drain by new pipe - where seal is formed by inverting resin soaked packing into joint and holding under pressure until hardened |
| 09/14/1993 | US5244624 Method of installing a new pipe inside an existing conduit by progressive rounding |
| 09/09/1993 | DE4207037A1 Renovation of sewage pipe in region of branch pipe - lines pipe with fibre mat impregnated with synthetic resin |
| 09/07/1993 | US5241993 Method for grouting cavities using a pumpable cement grout |
| 08/26/1993 | DE4303197A1 Device for sealing defect pipe walls - has a balloon fitted into a sealing mat and fillable with a pressurised medium. |
| 08/26/1993 | DE4218569C1 Securing and sealing pipeline comprising individual pipes for concreting into place - involves pipe line having pipe seam in each transition area with external pipe sleeve of thermoplastic and/or elastomer material |
| 08/26/1993 | DE4204497A1 Concrete structure erected from prefab. elements - which are clad with plastics panels and joints between elements fitted with an elastically flexible U-section. |
| 08/25/1993 | EP0556824A1 Method for providing a wall of a protective sheet; system provided with a protective sheet and anchoring means |
| 08/19/1993 | DE4204174A1 Packer with inflatable sealing elements and piston pump - uses second piston cylinder unit to move first piston to apply hardening sealing means to inside wall of pipe |
| 08/18/1993 | CN2140398Y Building sewer clog-proof self-cleaner |
| 08/12/1993 | DE4203718A1 Laying optical cables esp. in storm water drains - providing transitions between lengths of cable accessible to rainwater and portions of network buried in ground |
| 08/04/1993 | EP0553723A1 Sealing joint for construction elements in contact, especially for concrete elements |
| 08/04/1993 | CN2139603Y Sewage and air mixed buffer |
| 07/15/1993 | DE4200593A1 Repair of holes in pipes - inflating rolled-up plastic hose placed inside repair area by fluid and heat-hardening outer layer of pipe |
| 07/14/1993 | CN2138156Y Polyethylene sewer joint |
| 07/14/1993 | CA2059261A1 Culvert extension |
| 07/06/1993 | US5224514 Storm drainage conduit plug |
| 06/30/1993 | EP0548544A1 Device for water-proof connection of plastic sewerage pipes to subterraneous constructions |
| 06/30/1993 | CN2137268Y Sewage tube with mutiple mouth for side tube |
| 06/24/1993 | DE4236643A1 Laser device for structural levelling with laser beam receiver arrangement - contains mechanism for adjusting inclination and lateral direction of laser beam |
| 06/24/1993 | DE4142294A1 Prodn. of double wall branched pipe - by making hole in inner PVC liner, bonding PVC sleeve to it, forming concrete shell round assembly and push=fitting cylinder into sleeve |
| 06/16/1993 | EP0470146B1 Apparatus for use in renovation of tube systems, in particular sewer tube systems |
| 06/16/1993 | EP0355089B1 Method of renovating and/or protecting sewers and pipes |
| 06/16/1993 | CN1073242A Vacuum siphon for sewer pipe |
| 06/09/1993 | CN2135603Y Plastic fix clamp for drainage pipe |
| 06/03/1993 | DE4139565A1 Concrete pipe seal with gas pressure test channels - has corrosion-resistant steel plate cladding tubes with end sleeves for joint seals with test channels |
| 05/27/1993 | DE4138781A1 Base for heavy cylindrical load - has intermediate layer of mortar, plaster or concrete which is spread evenly over base |
| 05/25/1993 | US5213438 Chemical safety trench drain conduit |
| 05/25/1993 | US5213120 Method and apparatus for generating foam within a pipe |
| 05/19/1993 | EP0542032A1 Cover for closing an inspection and cleansing opening in a sewage pipe |
| 05/19/1993 | DE4209204C1 Butt seal for sewer pipes with central coupling ring groove - has in each butt end formed concentric, flat grooves on either side of central groove |
| 05/19/1993 | CN2133618Y Water-storing bend |
| 05/11/1993 | CA1317473C Method and apparatus for forming a trench |
| 05/07/1993 | WO1993009305A1 Method for the replacement of, in particular, sewage pipes, and a device for carrying out the method |
| 05/07/1993 | CA2098918A1 Method for the replacement of, in particular, sewage pipes, and a device for carrying out the method |
| 05/05/1993 | CN2131910Y Steel tube unit with pullable steel bar in front of drainage board |
| 05/04/1993 | US5207031 Apparatus for use in renovation of tube systems, in particular sewer tube systems |
| 04/29/1993 | DE4135433A1 Junctions for double-walled sewage channel - have junction socket, welded directly to inner plastics tube of channel |
| 04/29/1993 | DE4134049A1 Seal for concrete pipes with elastomer ring - has axially undivided free space holding ring and pointed end of other pipe |
| 04/21/1993 | EP0537442A2 Coverplate for gutters, especially for drainage of sports field, playgrounds and the like |
| 04/14/1993 | CN2129787Y Rectangular four-way sewage pipe |
| 04/14/1993 | CN2129786Y Lengthening vertical sweeping outlet sewage pipe |
| 04/14/1993 | CN2129785Y Lengthening three-way sewage pipe |
| 04/07/1993 | EP0535375A1 Process for preventing the introduction of wrongly directed thrash from a rainwater-channel to the receiving channel and installation for carrying out the process |
| 04/01/1993 | DE4132084A1 Lightweight, corrosion-resistant sewer pipe - has plastic lining and casing and load-resistant steel or cast-iron@ core tube |
| 03/25/1993 | DE4131366A1 Cover to increase flow capacity of open drainage channels and chambers - has cylindrical interior conforming to channel and removable fixing or closable openings for venting, inspection, cleaning and repair |
| 03/17/1993 | CN2128267Y Odour plug for sewer |
| 03/11/1993 | DE3943607C2 Flow regulator esp. for waste water channels |
| 03/10/1993 | EP0530203A1 Improvement in a sewage system. |
| 03/04/1993 | DE4216305A1 Spring ring and seal for ceramic pipe connection - has elastomeric seal enabling pipe end to be fixed in sleeve, covering and protecting spring ring |
| 03/02/1993 | US5190705 Method for lining large-diameter pipes |
| 02/03/1993 | EP0433333B1 Constructional member and method |
| 01/27/1993 | EP0524504A1 Rectangular concrete building element with channel shaped cavity for the production of a sealed guttering system |
| 01/26/1993 | US5181746 Sealing sleeve and its use |
| 01/14/1993 | DE4136519C1 Symmetrical sealing ring for sleeve corrugation - has shoulders adjacent to sealing lip, each with reduced inner dia. in direction away from lip |
| 01/12/1993 | CA1312457C Device for the in situ repair of a pipe |
| 12/30/1992 | CN1067403A Method and apparatus for installing pipe liner |
| 12/24/1992 | DE4120483A1 Manhole lining made in concrete - has waste water passage formed in floor with holes made in walls after removal from mould |
| 12/23/1992 | EP0519523A2 Valve control system |
| 12/22/1992 | US5172919 Appliance for preventing water from leaking through joint |
| 12/16/1992 | EP0518174A1 Method and apparatus for applying a coating to the inner surface of a pipe |
| 12/15/1992 | US5171105 Process and device for lining tunnels and ducts having circular and non-circular cross-sections, especially for canal and tunnel construction |
| 12/10/1992 | WO1992021909A1 Deformation device for deforming a sealing element made of plastics material fitted in a pipe |
| 12/09/1992 | EP0517489A1 Method and apparatus for installing a pipe liner |
| 12/09/1992 | EP0463083A4 Method and apparatus for forming a trench |
| 12/08/1992 | US5168682 Plastic liners for concrete structural elements and the elements and structures produced thereby |
| 12/03/1992 | DE4117431A1 Rubbish-dump dewatering pipe - comprises steel tube forming supporting core for plastic inner and outer casings |
| 12/01/1992 | US5167258 Re-lining of sewers |
| 11/26/1992 | WO1992020947A1 Channel element and method for laying pipelines underground |
| 11/26/1992 | DE4217293A1 Laying drainage and sewage pipes without excavating - using water-jet mounted at front of pipe string which removes spoil internally as pipe driven through soil |
| 11/25/1992 | EP0515134A1 Improvements in and relating to vacuum sewage systems |
| 11/25/1992 | CN2122894U Block-proof means for building closet pipe-lines |
| 11/24/1992 | US5165822 Pipe joint for driving pipes laid underground by the driving technique |
| 11/19/1992 | EP0463092A4 Apparatus for forming a trench |
| 11/19/1992 | DE4213898A1 Remote control repair equipment for underground conduits - has TV camera attached to removably insertable extension |
| 11/19/1992 | DE4115638A1 Metal gutter for concrete floor in premises handling foodstuffs - is coated with material, pref. granulate positively securing it to concrete |
| 11/18/1992 | CN2122184U Fixing device for horizontal sewage pipe and verticle downward inserting pipe |
| 11/12/1992 | DE4119305C1 Forming tight connection between concrete pipe and embedded steel sleeve - uses sealing ring fixed at inner periphery of steel sleeve and subsequently deformed by applied force |
| 11/12/1992 | DE4114859A1 Procedure and device for replacement of brick built sewers - old sewer demolishes and spoil removed and new concrete sewer lining introduced |
| 11/12/1992 | DE4108107A1 Sealing ring for bell joint construction of concrete pipes - seals positioned before concrete cast and form integral part of the pipe |
| 11/11/1992 | CN2121491U Counterweight stable speed jet tip device for scum pipeline |
| 11/04/1992 | EP0511363A1 Vacuum sewerage system with increased lift capabilities having electric air admission controllers |
| 11/04/1992 | CN2120833U Double-hole drainage pipeline |
| 10/28/1992 | EP0510089A1 Method for lining the inside of an accessible pipe and tunnel ring for implementing same. |
| 10/27/1992 | US5157982 Rotary actuator |
| 10/24/1992 | CA2054141A1 Earth duct tunnel enlargement apparatus and method |
| 10/14/1992 | EP0508875A1 Prefabricated tubular element |
| 10/08/1992 | DE4110765A1 Applying plaster coating to wall - by using suction source to remove excess moisture to reduce drying-out time |
| 10/01/1992 | WO1992016784A1 Method and apparatus of lining a passageway |
| 10/01/1992 | DE4109871A1 Rohrvorpresseinrichtung und rohrvorpressverfahren zum verlegen von rohrleitungen mit nicht-begehbarem innendurchmesser im erdboden Pipe rough-pressing and rohrvorpressverfahren to the laying of pipelines with non-walk-in internal diameter in the ground |