Patents
Sitemap › E02 - Hydraulic engineering; Foundations; Soil-shifting › E02F - Dredging; Soil-shifting › E02F 3 - Dredgers; Soil-shifting machines
Patents for E02F 3 - Dredgers; Soil-shifting machines (20,930)
10/1981
10/06/1981US4293270 Excavators
10/06/1981US4293269 Conversion or extension beam
10/06/1981US4292747 Compressed air dredge
09/1981
09/30/1981EP0036850A2 A working machine for demolition and excavation work
09/30/1981EP0036455A1 Improved load handling vehicle
09/29/1981US4291474 Dredge swell compensator apparatus
09/22/1981US4290488 Driving machine including speed synchronized earth working traction wheel
09/22/1981US4290214 Earthworking implement side plate wear member
09/22/1981CA1109428A1 Backhoe grapple assembly
09/22/1981CA1109427A1 Coupler
09/22/1981CA1109254A1 Mounting mechanism for angle dozer blade
09/17/1981WO1981002598A1 Floor support for mobile scraper
09/17/1981WO1981002597A1 Slide rail assembly for a work vehicle
09/17/1981WO1981002596A1 Swing motor mounting arrangement
09/15/1981US4289355 Attachment flange for flexible conduit
09/08/1981US4288196 Computer controlled backhoe
09/08/1981CA1108551A1 Method of loading and unloading railroad cars
09/02/1981EP0034900A1 Civil engineering and construction machinery with hydraulic drive system
09/02/1981EP0034857A1 Movable dredging device
09/01/1981US4286705 Scraper elevator drive mounting
09/01/1981US4286674 Replaceable bearing assembly for construction vehicles
09/01/1981US4286432 Lock valve with variable length piston and hydraulic system for a work implement using the same
08/1981
08/26/1981EP0034289A1 Device for extracting bulk material, especially sand, pebbles and the like situated under water
08/25/1981US4285628 Grapple system
08/25/1981US4285627 Undercarriage for adverse terrain vehicle
08/25/1981CA1107768A1 Scooper-excavator
08/20/1981WO1981002318A1 Earthworking implement side plate wear member
08/19/1981EP0033966A2 Excavating bucket
08/19/1981EP0033866A2 Silo-extraction device for agricultural operations
08/18/1981US4284265 Dual drive system for dragline with power interlock
08/18/1981US4283867 Backfilling apparatus with adjustable filling augers
08/18/1981US4283866 Convertible bucket attachment capable of excavation and clasping
08/18/1981CA1107325A1 Air-gap adjusting means for a magnetic proximity switch
08/18/1981CA1107308A1 Pivotable means for decreasing drag effects on a generally cylindrical dredge pipe
08/11/1981US4282933 Automatic control device for an earth working equipment
08/11/1981US4282664 Dipper door retainer
08/11/1981US4282662 Rotary trench digging machine
08/11/1981US4282661 Towing suction device for a dredging craft
08/11/1981CA1106596A1 Adjustment mechanism for dozer blade
08/04/1981US4281721 Bulldozer blade mounting assembly
08/04/1981CA1106325A1 Loader device and method of mounting
07/1981
07/28/1981US4280783 Lost motion linkage assembly for a front loader
07/28/1981US4280289 Underwater trenching machine for burying pipeline and the like
07/28/1981CA1105800A1 Overload relief valve
07/28/1981CA1105727A1 Apparatus for the subaqueous entrenching of pipes
07/23/1981WO1981002045A1 Replaceable fastener for cover plates and the like
07/21/1981US4279566 Backhoe frame wedge mount
07/21/1981US4279543 Device for conveying a medium from means provided in a fixed position on a bottom below the water surface to a buoy body
07/21/1981US4279312 Dual tractor road grader with double arched center frame
07/21/1981US4279085 Excavating buckets
07/21/1981CA1105524A1 Lip and tooth combination for a bucket wheel excavator
07/21/1981CA1105504A1 Means for driving the back walls of a bucket excavator
07/21/1981CA1105415A1 Material handling apparatus
07/15/1981EP0032086A2 Water pumping installation with a regulable floating water intake
07/14/1981US4278394 Releasable boom lock
07/14/1981US4278393 Slack prevention system for a crowd rope of a power shovel
07/14/1981US4278365 Control system for controlling a plant including a mobile suction device for sucking suspendible material
07/14/1981US4278141 Undercarriage for adverse terrain vehicle
07/14/1981US4278140 Undercarriage for adverse terrain vehicle
07/14/1981US4277899 Excavating machine with position indication of its work implement
07/14/1981US4277898 Hydraulic control system for excavating machine
07/07/1981CA1104526A1 Stand device for boom-type working implements
06/1981
06/30/1981US4275985 Hay bale handling device
06/30/1981US4275984 Parking stand
06/30/1981US4275542 Welded structure of a power arm
06/23/1981US4274797 Backhoe excavating apparatus
06/23/1981US4274796 Machine comprising a rotatable boom assembly
06/23/1981US4274493 Cushioned bulldozer blade
06/23/1981US4274213 Scraper blade mounting assembly
06/17/1981EP0023901A4 Router bit assembly for an earth working apparatus.
06/16/1981US4273502 Boom lock means
06/16/1981US4273196 Automatic control system for maintaining blade in predetermined relationship to laser beam
06/16/1981CA1103020A1 Land plane
06/09/1981US4272222 Boom apparatus
06/09/1981US4272221 Undercarriage for adverse terrain vehicles
06/09/1981US4271614 Floating soil fracture tool
06/09/1981US4271613 Excavator with articulated arms
06/09/1981CA1102750A1 Differential case and push-frame assembly
06/09/1981CA1102749A1 Load carrying apparatus
06/09/1981CA1102747A1 Backhoe boom transport locking means
06/03/1981EP0029469A1 A method of dredging and dredging implement
06/02/1981US4270617 Earth moving machine of the scraping blade type
06/02/1981US4270616 Bulldozer blade mounting assembly
06/02/1981US4270286 Tool suspension with supply means for hydraulic medium
06/02/1981CA1102116A1 Earthworking attachment for tractors
05/1981
05/26/1981US4269276 Plow attachment assembly for a crawler-type tractor
05/26/1981US4269275 Replaceable edge bit assembly
05/26/1981US4269273 Land surfacing apparatus
05/26/1981CA1101803A2 Power shovel and crowd system therefor
05/19/1981US4268217 Load carrying apparatus
05/19/1981US4268214 Excavator front end
05/19/1981US4268174 Concrete mixer
05/19/1981US4267674 Guard structure for fluid conduits of hydraulic cylinders of mobile apparatus
05/19/1981US4267652 Dredging system and apparatus
05/15/1981EP0022853A4 Two way side dump bucket attachment for front end loader.
05/14/1981WO1981001320A1 Protective sleeve
05/13/1981EP0028427A1 Device for mounting and removing a cutter at the end of the cutter shaft from a cutter dredge
05/12/1981US4266909 Means for hydraulic self-leveling of a loader bucket
05/12/1981US4266908 Excavating apparatus
05/12/1981US4266906 Materials handling device and the method of mounting the same on a tractor
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