Patents
Patents for E02F 5 - Dredgers or soil-shifting machines for special purposes (6,683)
07/1996
07/30/1996US5540003 Padding machine with shaker for separator
07/24/1996EP0722654A1 Boom mounted treatment apparatus for roadside maintenance
07/23/1996CA2078688C Method and apparatus for laying undersea pipes or cables featuring rotating or oscillating jets and block removal
06/1996
06/26/1996EP0718233A2 Device for winding a hose
06/26/1996CN2229946Y Water power dredging machine for cleaning watercourse
06/25/1996US5529129 Hand-held trenching tool
06/11/1996CA2094944C Ditch digging apparatus and method
05/1996
05/29/1996CN1123354A Apparatus for obtaining sands from bottom of river
05/17/1996WO1996014553A1 Device for recovering explosive objects buried in the ground
05/17/1996CA2204533A1 Device for recovering explosive objects buried in the ground
05/14/1996US5515625 Rake attachment with scarifying teeth for a skid steer
05/08/1996EP0521032B1 Improvements in fluid-based excavating
05/08/1996CN1121976A Method and apparatus for dredging canal
05/01/1996EP0709526A2 Back-filling device for pipe trenches
04/1996
04/30/1996US5511326 Rotating disk-type ditcher
04/25/1996DE19539249A1 Rotary tool for digging trenches
04/24/1996EP0708270A1 Supporting chain for pipes
04/23/1996CA2045656C Trenching apparatus
04/18/1996WO1996011305A1 Automatic depth control for trencher
04/17/1996EP0419484B1 Improvements relating to dredgers
04/04/1996DE4434906A1 Underground excavating shovel
04/03/1996CN1119882A Process and device for precisely maintaining the vertical excavation direction of a subterranean curtain
03/1996
03/28/1996DE19535647A1 Dredger with pumping of dredged material
03/20/1996EP0478749B1 Ripper assembly with pitch control and integral frame and push block
03/20/1996CN2222742Y Expansion excavating skip in manhole
03/12/1996US5497567 Excavating machine for digging a ditch
03/07/1996DE4431562A1 Method of preparing trench floor for laying pipeline
03/06/1996CN1118031A Barge-loading type seabeach pipeline excavator
03/05/1996US5496135 Articulated vehicle for use in confining trench work
02/1996
02/29/1996WO1996006232A1 Apparatus for laying sub-surface pipes and cables
02/28/1996EP0499602B1 Linear impact ripper apparatus
02/28/1996CN1117749A Sensor positioning apparatus for trench excavator
02/27/1996US5493796 Pipeline padding apparatus
02/20/1996US5491914 Bucket equipped with mixing device, excavation machine having the bucket, and soil improvement method using the excavation machine
02/15/1996WO1996004500A1 Underground cable anode installment system
02/15/1996DE4439617C1 Equipment for recovering explosive objects in ground
02/13/1996US5490339 Trenching system for earth surface use, as on paved streets, roads, highways and the like
01/1996
01/31/1996EP0694100A1 Method and device for continuously laying and burying a flexible submarine cable
01/30/1996US5487229 Apparatus for pneumatic excavation
01/24/1996CN2218201Y Water power dredger for water reservoir
01/17/1996EP0494196B1 Tunnel drilling apparatus and method to remove drill waste
01/10/1996EP0690943A1 Process and device for precisely maintaining the vertical excavation direction of a subterranean curtain
01/09/1996US5482121 Vibratory cable plow assembly
01/02/1996US5480291 Underwater excavation apparatus
01/02/1996US5479728 Apparatus for backfilling and tamping a trench
01/02/1996US5479726 For moving along one side of a pipeline ditch
12/1995
12/27/1995CN2216083Y Air flow type dredger
12/26/1995US5478139 Mobile digging/cutting system
12/21/1995DE4426598C1 Hose chain with U=shaped links
12/20/1995EP0687331A1 Device for filling a trench in the sea bed to cover a pipe placed therein
12/20/1995CN2215522Y Bucket type mud dredger
12/13/1995EP0687048A1 Process and device for laying an underground telecommunication cable
12/13/1995EP0494197B1 Control method for drilling apparatus
12/05/1995US5471771 Method and apparatus for cooling chain type diggers
12/01/1995CA2148397A1 Ground thaw apparatus
11/1995
11/30/1995WO1995032121A1 Supplied ship for underwater excavator
11/15/1995CN2212607Y Bridge-type earthwork machine for making embankment on seabeach
11/14/1995USRE35088 Trenching machine with laterally adjustable chain-type digging implement
11/14/1995US5465511 Trenching machine
11/07/1995US5464308 Process and apparatus for simultaneously laying long product and protective tube in the ground
10/1995
10/31/1995US5462389 Undersea cable burial plowshare and sled apparatus
10/31/1995CA2045766C Compactor and blade attachment for loader
10/26/1995WO1995028529A1 Apparatus for burying an elongated article underwater
10/26/1995WO1995028076A1 Soil working device
10/19/1995WO1995027832A1 Method and vessel for treating an underwater bed
10/19/1995DE4413289A1 Bodenbearbeitungsgerät Harrow
10/18/1995EP0677616A1 Method for compacting and consolidating the underwater bed
10/18/1995EP0677129A1 Sensor positioning apparatus for trench excavator
10/18/1995EP0456692B1 Cutting apparatus
10/18/1995CN1110353A Channel trench digger
10/11/1995CN2209693Y Cambered grid-type sewage disposal equipment
10/10/1995US5456551 Underwater trenching system
10/05/1995WO1995026445A1 Levelling blade with vibrating shoes for making road embankments
09/1995
09/27/1995CN2208593Y Hydraulic dredge ship
09/26/1995US5452969 Apparatus for screening and spreading bedding material in a ditch
09/13/1995CN1108333A Endless chain type cutter
09/06/1995EP0521978B1 Rotary rockwheel assemblies
09/05/1995CA2037202C Universal excavator with auxiliary tool supply means and bucket scraper
08/1995
08/30/1995EP0669377A1 Water-resistant gypsum compositions and emulsion for making same
08/30/1995CN1107643A Process and tool for laying underground collector mains for liquids and gases
08/29/1995CA2049484C Method and tool for seabed excavation
08/15/1995US5441038 Ground thaw apparatus
08/10/1995WO1995021303A1 Method for dredging using a hopper suction dredger and hopper suction dredger therefor
08/09/1995CN1029489C Reservoir water power mud-removing system
08/01/1995US5437722 An aqueous slurries comprising paraffin hydrocarbon, montan wax and polyvinyl alcohol derived from completely or partial hydrolyzed polyvinyl acetate; asphalt-free; wallboard
07/1995
07/29/1995CA2114483A1 Pipeline plow
07/27/1995WO1995020076A1 Pipeline trenching plough
07/19/1995EP0663478A1 Combination of a digger with a vibrating device
07/18/1995US5433277 Soil implement
07/18/1995US5433033 Excavating tooth and shank plate assembly
07/13/1995WO1995018895A1 Device for filling a trench in the sea bed to cover a pipe placed therein
07/13/1995CA2157685A1 Device for filling a trench in the sea bed to cover a pipe placed therein
07/11/1995US5430962 Pipeline padding apparatus with rotary feeder
07/11/1995CA2045628C Retractable excavator cutting tooth apparatus
07/05/1995CN1029252C Cleaning apparatus for streight sliding-door guiding groove
06/1995
06/28/1995EP0659944A1 Endless chain type cutter
06/28/1995EP0659943A1 Excavating apparatus
06/20/1995US5425188 For removing material
06/14/1995EP0656988A1 Apparatus for cutting and excavating solids
06/14/1995EP0656976A1 Excavating and pipe laying machines
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