| Patents for E02F 9 - Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups (23,883) |
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| 08/22/1991 | CA2036561A1 Skid steer vehicle |
| 08/22/1991 | CA2036552A1 Skid steer vehicle |
| 08/22/1991 | CA2036551A1 Skid steer vehicle |
| 08/21/1991 | EP0442449A2 Replaceable wear element |
| 08/20/1991 | US5040851 Pneumatic circuit for wheel mounted shovel |
| 08/20/1991 | US5040428 Swing reduction gear assembly |
| 08/14/1991 | EP0440807A1 Hydraulic driving apparatus of civil engineering/construction equipment |
| 08/14/1991 | EP0440802A1 Device for controlling hydraulic pump |
| 08/14/1991 | EP0440801A1 Hydraulic circuit |
| 08/13/1991 | US5040119 Draft control apparatus and method |
| 08/13/1991 | US5038633 Transmission for mini shovel car |
| 08/08/1991 | WO1991011622A1 Pressure compensated hydraulic system |
| 08/07/1991 | EP0440070A2 Energy saving circuit in a hydraulic apparatus |
| 08/07/1991 | EP0439621A1 Pressure oil feed circuit device for hydraulic cylinder of operation machine |
| 08/07/1991 | EP0287670B1 Driving control apparatus for hydraulic construction machines |
| 08/06/1991 | CA1287329C Method and apparatus for attaching a loader to a tractor |
| 07/31/1991 | EP0439166A1 Stacked type hydraulic control valve system |
| 07/31/1991 | EP0438606A1 Valve device and hydraulic circuit device |
| 07/25/1991 | WO1991010833A1 Valve device and hydraulic driving device |
| 07/25/1991 | WO1991010785A1 Device for changing over flow rate for attachment |
| 07/25/1991 | WO1991010784A1 System for changing over running speed of hydraulic excavator |
| 07/25/1991 | WO1991010783A1 Automatic vibration method and apparatus for hydraulic excavator |
| 07/23/1991 | US5034892 Apparatus for suppressing vibratory or quaky movements of mobile type crane |
| 07/18/1991 | DE4000830A1 Ball-bearing slewing rim - incorporates two=part T=shaped ball-race and is used in dredgers or cranes |
| 07/17/1991 | EP0436740A1 Linear excavation control apparatus in hydraulic excavator |
| 07/17/1991 | EP0436707A1 Method of producing dipotassium-ascorbate-2-sulphate. |
| 07/17/1991 | EP0414751A4 Bit assembly utilizing carbide insert |
| 07/16/1991 | US5033031 Underground ultrasonic tillage depth sensor |
| 07/16/1991 | CA1286202C Crowd control system for a loader |
| 07/16/1991 | CA1286106C Remote control system for earth working vehicle |
| 07/13/1991 | CA2032910A1 Sophisticated directing and guiding device for earthmovers |
| 07/11/1991 | WO1991010017A1 Method of automatic control over impact ripper |
| 07/10/1991 | EP0436028A1 Hydraulic circuit for operating cylinder of working machine |
| 07/09/1991 | CA1285961C Vortex counter flow dreding/pumping system |
| 07/03/1991 | EP0434801A1 Process for producing dipotassium ascorbate-2-sulphate. |
| 07/02/1991 | US5029067 Operation control device |
| 07/02/1991 | US5027535 Boltless holding clamp for earth working cutting teeth |
| 06/26/1991 | EP0433454A1 Hydraulic circuit apparatus |
| 06/25/1991 | US5026335 Downshifting work vehicle using differential lock switch |
| 06/25/1991 | US5026246 Backhoe |
| 06/25/1991 | US5025626 Cushioned swing circuit |
| 06/25/1991 | US5025625 Commonly housed directional and pressure compensation valves for load sensing control system |
| 06/20/1991 | DE3941123A1 Schleppzahn fuer schneidraeder Trailing tooth for cutting raeder |
| 06/19/1991 | EP0433244A1 A mobile elevator with backhoe |
| 06/19/1991 | EP0432266A1 Hydraulic driving unit for construction machinery |
| 06/18/1991 | US5024140 Hydraulic control mechanism for a hydraulic actuator |
| 06/14/1991 | WO1991009181A1 Traction tooth for cutting wheels |
| 06/14/1991 | CA2072119A1 Traction tooth for cutting wheels |
| 06/13/1991 | WO1991008395A1 Hydraulic motor driving circuit device |
| 06/13/1991 | WO1991008352A1 Connecting pin device of working machine link |
| 06/13/1991 | WO1991008351A1 Installation for shifting won minerals |
| 06/12/1991 | EP0431011A1 An implement positioning control system for construction machines. |
| 06/12/1991 | EP0270674B1 Automatic transmission of wheel loader |
| 06/11/1991 | CA1284758C Valve control lockout |
| 06/06/1991 | CA2015433A1 Conveyor system for hauling debris |
| 05/29/1991 | EP0429413A1 An articulation with rotating hydraulic connection, in particular for mobile work machines |
| 05/29/1991 | EP0428610A1 Cutting using high energy radiation. |
| 05/28/1991 | US5018934 Backhoe hydraulic cylinder decelerator |
| 05/28/1991 | US5018283 Loader bucket tooth |
| 05/22/1991 | EP0427865A1 Hydraulic driving device of construction equipment |
| 05/22/1991 | EP0427758A1 Cemented carbide tip |
| 05/21/1991 | US5016721 Full-turn type working machine |
| 05/21/1991 | US5016365 Wear parts for excavation apparatus |
| 05/16/1991 | WO1991006465A1 Sound- and heat-proofing apparatus of hydraulic operation valve |
| 05/14/1991 | US5015847 Device for measuring the radioactivity of a load of ore on an extraction machine such as a mechanical shovel or digger |
| 05/14/1991 | US5015148 Frame adapted for a tractor |
| 05/14/1991 | US5015147 Excavating apparatus |
| 05/14/1991 | US5015008 Stabilizer pad assembly for an earth moving apparatus |
| 05/08/1991 | EP0425552A1 Cutter bit and tip. |
| 05/07/1991 | US5012599 Protective pad assembly for the loader bucket of a backhoe |
| 05/07/1991 | CA1283939C Positive keeper means for pins of earthworking tips |
| 05/02/1991 | WO1991005958A1 Hydraulic driving apparatus of civil engineering/construction equipment |
| 05/02/1991 | WO1991005920A1 Armoring structure for construction machines |
| 05/01/1991 | CN1012513B Driving and controlling device for hydraulic building machine |
| 04/30/1991 | US5011184 For a utility vehicle |
| 04/30/1991 | US5010962 Indicating apparatus for a coupling |
| 04/24/1991 | EP0423372A1 Driving control device for vehicle and control method therefor |
| 04/24/1991 | EP0423353A1 Hydraulic driving apparatus of caterpillar vehicle |
| 04/23/1991 | US5009017 Retaining pin having a positive keeper means |
| 04/18/1991 | WO1991005113A1 Operation automating apparatus of hydraulic driving machine |
| 04/18/1991 | WO1991004938A1 Process and system for monitoring an installation, such as an automobile crane, large excavator or the like |
| 04/18/1991 | DE4028773A1 Excavator for steep inclines - has adjustable wheels at front and jointed thrust arms at rear |
| 04/18/1991 | DE3933634A1 Power supply controller for loader and drill wagon - implements sequential switching of circuits for monitoring different machine functions independently using single power supply cable |
| 04/17/1991 | EP0422200A1 Control lever assembly. |
| 04/17/1991 | EP0421994A1 Synchronized hydraulic hammer arrangement |
| 04/16/1991 | US5007882 Belt transmission for very small size shovel car |
| 04/16/1991 | US5007685 Trenching tool assembly with dual indexing capability |
| 04/11/1991 | DE3932555A1 Combined excavator and loader - has excavator mounted on driver's cab so that it does not obstruct driver's view |
| 04/10/1991 | EP0420995A1 Hydraulic motor equipped with reduction gear |
| 04/09/1991 | US5005466 Cavitation-preventing pilot valve control system for power shovel hydraulic circuit |
| 04/09/1991 | US5005358 Hydraulic drive system for crawler-mounted construction vehicle |
| 04/09/1991 | US5005304 Replaceable wear element |
| 04/09/1991 | CA1282812C Resilient flex pin apparatus for excavating tooth point and adapter assemblies |
| 04/09/1991 | CA1282670C Backhoe creep lever mechanism for an excavating vehicle |
| 04/04/1991 | WO1991004466A1 Gauging shovel head |
| 04/03/1991 | EP0419816A1 Transmission for mini shovel car |
| 04/03/1991 | EP0419673A1 Hydraulic drive unit for civil engineering and construction machinery |
| 04/03/1991 | EP0419667A1 Service machine stopping apparatus for midget rotary power shovel |
| 04/02/1991 | CA1282378C Sideshift mounted backhoe locking mechanism |
| 03/29/1991 | CA2026415A1 Stepping vehicle |