| Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683) |
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| 04/23/2009 | WO2009006201A3 Track trencher propulsion system with component feedback |
| 04/23/2009 | WO2008135728A3 A plough for excavating a subsea channel and a sea-going vessel comprising a plough |
| 04/22/2009 | CN201224892Y Hard drawing type cable direct-buried machine |
| 04/22/2009 | CN101413282A Hydraulic claw bucket of slotting machine |
| 04/22/2009 | CN101413281A Grooving construction method for pipeline crossing river at river course bottom |
| 04/22/2009 | CN101412414A Folding crawler type walking device and vehicle |
| 04/22/2009 | CN101412412A Jaw crawler type walking device and vehicle |
| 04/15/2009 | CN201221100Y Ditch excavator |
| 04/15/2009 | CN201219355Y Furrowing machine |
| 04/15/2009 | CN100478528C Cable or pipe retrieval and burial apparatus and methods |
| 04/15/2009 | CN100477902C A turf cutter/de-compactor/trencher |
| 04/14/2009 | US7516702 Track renewal machine |
| 04/14/2009 | US7516563 Excavation control system providing machine placement recommendation |
| 04/12/2009 | CA2618498A1 Travel support machanism for movable conveyor bridge |
| 04/08/2009 | CN201217819Y Inflation type silt flushing device |
| 04/08/2009 | CN201217818Y Underground excavator |
| 04/08/2009 | CN201217817Y Optical cable pipeline imbedding machine |
| 04/08/2009 | CN101403223A Rock breaking device, protection valve and a method of operating a rock breaking device |
| 04/08/2009 | CN101403221A Underwater sand-suction cover and apparatus |
| 04/07/2009 | US7513070 Work support and management system for working machine |
| 04/02/2009 | US20090084003 Excavating Machine |
| 03/26/2009 | US20090077836 Walk-behind trenching machine |
| 03/25/2009 | EP2039971A2 Method and device for monitored laying of pipes |
| 03/25/2009 | EP1409797A4 Trenching machine |
| 03/25/2009 | CN101392542A High-temperature crushing dredger |
| 03/19/2009 | WO2005060435A3 Soil stabilizer with track apparatus |
| 03/19/2009 | DE102007043307A1 Behandlung von Erdbaustoffen mit Kohlendioxid Treatment of Erdbaustoffen with carbon dioxide |
| 03/18/2009 | EP2035629A1 Sensor device for interrupting irrigation |
| 03/18/2009 | CN201209260Y Channel dredging apparatus |
| 03/17/2009 | US7503134 Inclined slope vacuum excavation container |
| 03/12/2009 | US20090064543 Walk-behind trenching machine |
| 03/12/2009 | DE202008016851U1 Vorrichtung zum Einbringen einer Erdbohrung in das Erdreich Means for introducing a well bore into the ground |
| 03/11/2009 | CN101381997A Suction dredger with dredging tube of variable length |
| 03/11/2009 | CN101381851A Drill rod of digger capable of high temperature crushing operation and producing method thereof |
| 03/05/2009 | WO2006065292A3 Trencher guidance via gps |
| 03/04/2009 | CN201202127Y Self-propelled trailing suction hopper dredger steel pile trolley positioning system |
| 03/04/2009 | CN201202126Y Environment-protective desilting head and environment-protective desilting system therewith |
| 03/04/2009 | CN201202115Y Pile-formation apparatus for dry construction reinforced concrete filling pile |
| 03/03/2009 | US7497038 Trench cutter |
| 02/26/2009 | WO2009026262A1 Devices and methods for trenchless replacement of underground pipe |
| 02/26/2009 | US20090050340 Scarifier |
| 02/25/2009 | CN101372835A Hydraulic-mechanical integrated sand discharge apparatus |
| 02/24/2009 | CA2517533C Non-rotatable wear ring and retainer sleeve for a rotatable tool |
| 02/18/2009 | CN201195853Y Mobile water-bed sullage suction conveyer |
| 02/17/2009 | US7490421 Method and construction machine for producing ground surfaces |
| 02/11/2009 | CN201193536Y Soil discharging apparatus for sump |
| 02/11/2009 | CN201193339Y Pearl shell type wire rope crab bucket for dredging underwater |
| 02/11/2009 | CN201193338Y Cross suspension unit for hydraulic crab bucket |
| 02/11/2009 | CN201193337Y Pearl shell type wire rope crab bucket for dredging underwater |
| 02/11/2009 | CN201193336Y Vertical quick change furrow opener |
| 02/10/2009 | US7487609 Hydraulic circuit device of hydraulic working machine |
| 02/10/2009 | US7487608 Walk-behind self-propelled snow removing machine |
| 02/05/2009 | US20090035110 Backfilling apparatus with dual telescopically positionable material dispensers |
| 02/05/2009 | US20090031591 Apparatus and a method for constructing an underground continuous filling wall and stratum |
| 02/05/2009 | US20090031590 Foundation construction device for producing trenches in the soil |
| 02/04/2009 | CN201191731Y Electric tackle |
| 02/04/2009 | CN100458026C Yellow river riverway refitting device, namely, Gunhelong |
| 02/03/2009 | US7484323 Excavating tool for hydraulic shovel |
| 02/03/2009 | US7484321 Anti-freeze backhoe bucket insert |
| 01/28/2009 | CN201187065Y Hydraulic claw bucket of trench cutter |
| 01/28/2009 | CN201186429Y Handle for gardening earth auger |
| 01/27/2009 | US7481604 Machine for digging a trench and making a wall in said trench |
| 01/27/2009 | US7481168 Off-track railroad track undercutter apparatus |
| 01/21/2009 | CN201183968Y Double-crushing type full-automatic remote-controlled submersible dredging vehicle |
| 01/21/2009 | CN201183967Y Full-automatic amphibious dredging vehicle |
| 01/21/2009 | CN201183966Y Electric excavator for vertical shaft construction |
| 01/21/2009 | CN100453746C Cutter and method for working the soil |
| 01/08/2009 | WO2009006204A1 Track trencher propulsion system with load control |
| 01/08/2009 | WO2009006201A2 Track trencher propulsion system with component feedback |
| 01/08/2009 | US20090010716 Strand-like material laying device for cutting the ground and inserting strand-like material into the ground |
| 01/08/2009 | US20090007462 Hydraulic system with thermal shock protection |
| 01/08/2009 | US20090007460 Earth saw |
| 01/07/2009 | CN201176601Y Underwater magnetic separation dredging machine |
| 01/07/2009 | CN101338572A Posthole digger |
| 01/07/2009 | CN101338571A Hydraulic dibhole digging machine |
| 01/01/2009 | US20090000155 Cutting Element Supported on a Chain |
| 01/01/2009 | US20090000154 Trencher with Auto-Plunge and Boom Depth Control |
| 12/31/2008 | WO2008125942A8 Soil milling machine |
| 12/31/2008 | CN201173138Y Coal mine downhole water storehouse dredging machine |
| 12/30/2008 | US7470100 Material handling apparatus and method for operating |
| 12/30/2008 | US7470089 Plow blade with water passageway and method of constructing same |
| 12/30/2008 | US7469488 Control of process humidity to produce large, porous particles |
| 12/30/2008 | CA2521725C Multi-shank ripper |
| 12/30/2008 | CA2512758C Cutting wheel for a trench wall cutter |
| 12/25/2008 | US20080313933 Backfill attachment device |
| 12/24/2008 | WO2008156442A1 Hydraulic function auto-control mode deactivation |
| 12/24/2008 | EP1681913A4 Earth scraper with track apparatus |
| 12/24/2008 | EP1379219B1 Large, porous particles produced by controlling humidity during a spray draying process |
| 12/24/2008 | CN201169790Y Sliding amphibious dredging machine |
| 12/24/2008 | CN201169789Y Dredging device |
| 12/24/2008 | CN201169788Y Rotary enlarging machine |
| 12/18/2008 | WO2008153529A1 Hydraulic function control with auto- control mode override |
| 12/17/2008 | EP2002062A1 Auger for use with trenching assembly |
| 12/17/2008 | CN201165675Y Deep water plate nail ridger |
| 12/17/2008 | CN201165674Y Deep water route float sludge wheel type destabilization machine |
| 12/17/2008 | CN201165673Y Depth increasing machine of deep water route |
| 12/17/2008 | CN201165672Y Dome cutting machine |
| 12/17/2008 | CN201165630Y Single hydraulic arm road maintenance vehicle |
| 12/16/2008 | US7464493 Work machine |
| 12/11/2008 | DE102007025833A1 Module carrier vehicle for area of graveyard, has support units arranged at steel frame construction hydraulically changed in length and breadth to ensure application of vehicle in application areas with different ground coverages |