| Patents for E02F 7 - Equipment for conveying or separating excavated material (1,526) |
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| 07/04/1991 | DE3942983A1 Excavator optional accessory with release mechanism |
| 06/13/1991 | WO1991008351A1 Installation for shifting won minerals |
| 06/06/1991 | CA2015433A1 Conveyor system for hauling debris |
| 06/04/1991 | US5020858 Method of and apparatus for forming and transporting mud clogs |
| 05/15/1991 | EP0427013A1 Floating dredger |
| 04/23/1991 | US5009548 Apparatus for and a method of facilitating the excavating and refilling of a trench |
| 04/03/1991 | CN1012271B Amphibious blower for feeding mud or earth |
| 03/28/1991 | DE4017107A1 Continuously operating open-cut mining device |
| 03/26/1991 | US5002656 Rotary grid-structure bucket for separating from each other fine and coarse particles of sizable materials or products |
| 03/21/1991 | DE3930590A1 Enclosed conveyor belt for earth or loose material - has horizontal belt and two fixed vertical side walls of low frictional resistance |
| 03/19/1991 | US4999934 Dredging apparatus |
| 02/26/1991 | US4995175 For underwater debris |
| 01/31/1991 | DE3943536A1 Excavator optional accessory with release mechanism |
| 01/31/1991 | DE3943515A1 Excavator optional accessory with release mechanism |
| 01/30/1991 | EP0409873A1 Conveyor apparatus |
| 01/10/1991 | DE3920392A1 Verfahren zum abbau und zur foerderung einer unter wasser lagernden bodenschicht und vorrichtung zur durchfuehrung des verfahrens A method for degrading and foerderung a ground layer overlying underwater and apparatus for performing the method |
| 01/10/1991 | DE3920011A1 Winning equipment in mine - is mounted on self-propelled tracked vehicle and has toothed milling roller and conveyor belt system |
| 01/01/1991 | US4981548 Apparatus for use in removing tile from a floor |
| 12/25/1990 | US4979781 Bench mining method and apparatus |
| 12/20/1990 | DE3919470A1 Excavator optional accessory with release mechanism |
| 12/20/1990 | DE3919469A1 Excavator optional accessory with release mechanism |
| 12/20/1990 | DE3919467A1 Excavator optional accessory with release mechanism |
| 12/19/1990 | EP0402619A2 Continual digging-transport-loading accessory for earth moving equipment |
| 12/11/1990 | CA1277633C Method and apparatus for separating from excavated materials the fine and coarse constituents thereof |
| 11/20/1990 | US4971157 Apparatus for the removal of spoil when making trenches of great depth |
| 11/01/1990 | WO1990012929A1 A device for a sorting shovel |
| 08/22/1990 | EP0382726A1 Process and device for dredging silt in ports, waterways and the like. |
| 08/07/1990 | US4945661 Dredging apparatus |
| 07/03/1990 | US4937956 Ocean floor dredging |
| 06/06/1990 | EP0371588A2 Dredging apparatus |
| 03/14/1990 | EP0357652A1 Pneumatic extraction head. |
| 02/27/1990 | US4903419 Method of and apparatus for dredging sludge in high density |
| 01/31/1990 | EP0353152A1 Device for withdrawing dug material for making deep trenches |
| 01/30/1990 | US4896445 Method for reducing costs and environmental impact of dredging |
| 01/17/1990 | CN1006478B Swing anti-impact dredger with multiple grab buckets |
| 01/03/1990 | CN1038478A Amphibious blower for feeding mud or earth |
| 12/19/1989 | US4887371 Dredges |
| 10/26/1989 | DE3912215A1 Mobile two-section slope conveyor |
| 10/19/1989 | WO1989009659A1 Screening apparatus for bulk material |
| 10/18/1989 | EP0337822A1 Screening apparatus for bulk material |
| 10/10/1989 | US4872275 Ditch cleaning machine |
| 10/05/1989 | WO1989009174A1 Conveyor apparatus |
| 10/04/1989 | EP0335800A1 Vehicle for continuously gathering and loading materials |
| 10/03/1989 | US4871213 Excavating apparatus with adjustable breaker bar |
| 09/27/1989 | EP0334143A1 Apparatus for breaking materials, especially stone, and building and road building materials |
| 09/26/1989 | CA1260965A1 Bench mining method and apparatus |
| 09/19/1989 | CA1259635A1 Diluvial diving dredge |
| 08/31/1989 | DE3805344A1 Machine for civil engineering work, in particular for constructing trenches |
| 08/22/1989 | US4858347 Continuous excavating apparatus and methods |
| 05/02/1989 | US4826251 Dredging apparatus |
| 04/19/1989 | EP0311714A2 Washing device |
| 04/18/1989 | US4822106 Golf ball dredge |
| 02/21/1989 | US4805703 Method and apparatus for separating fine and coarse materials from excavated materials |
| 02/16/1989 | DE3725595A1 Crawler mounted bucket wheel excavator - has flexible conveyor belt and carrier system giving greater manoeuvrability |
| 02/09/1989 | DE3725022A1 Underwater rope cutting process |
| 02/08/1989 | EP0302762A1 Ocean floor dredging |
| 02/02/1989 | DE3744695A1 Method for dredging and dressing silt from harbours, waterways etc. |
| 02/02/1989 | DE3724251A1 Verfahren und vorrichtung zum baggern von schlick aus hafen, wasserstrassen oder dergleichen Method and device for dredging of silt from harbor, water roads or the like |
| 01/26/1989 | WO1989000630A1 Process and device for dredging silt in ports, waterways and the like |
| 01/25/1989 | CN2031381U Oxygen increasing macine for agricultural paddle ship |
| 12/28/1988 | CA1247664A Apparatus for working deposits by the open-cast working process |
| 11/22/1988 | US4785560 Continuous excavating apparatus |
| 11/03/1988 | WO1988008470A1 Pneumatic extraction head |
| 10/25/1988 | CA1243694A1 Excavation apparatus |
| 10/06/1988 | DE3710285A1 Apparatus for extracting contaminated earth |
| 10/06/1988 | DE3710283A1 Apparatus for extracting and removing contaminated earth |
| 10/05/1988 | EP0284643A1 Rotary grid-structure bucket for separating from each other fine and coarse particles of sizable materials or products |
| 08/16/1988 | US4764137 Floatable dredge hose |
| 07/26/1988 | US4759664 Method of building or restoring marshes and beaches |
| 06/22/1988 | EP0271584A1 Apparatus for sending earth and sand under pressure |
| 06/15/1988 | CN86108042A Swing anti-impact dredger with multiple grab buckets |
| 06/07/1988 | US4749326 Continuous loading apparatus |
| 03/09/1988 | EP0258886A1 Combined device for feeding, conveying, separating and crushing stony material |
| 02/24/1988 | EP0256597A1 Device for removing explosive material from soil |
| 01/13/1988 | EP0169199B1 Dredging apparatus |
| 12/03/1987 | WO1987007317A1 Apparatus for sending earth and sand under pressure |
| 11/12/1987 | DE3638599C1 Dredging apparatus for dredging light mud |
| 09/29/1987 | US4696607 Slurry trench method and apparatus for constructing underground walls |
| 09/24/1987 | DE3541955A1 Quick-action coupling for all sizes of jetting pipes |
| 08/27/1987 | DE3605040A1 Apparatus for filling cable trenches |
| 08/11/1987 | US4685742 Equipment for extracting ores from sea beds |
| 07/14/1987 | CA1224174A2 Apparatus for separating bitumen from tarsand |
| 07/09/1987 | DE3600235A1 Arrangement for transporting earth spoil |
| 07/07/1987 | US4678236 Apparatus for working deposits by the open-cast working process |
| 06/10/1987 | EP0224920A2 Washing plant and method of washing materials in said plant |
| 03/31/1987 | US4653961 Mobile pipe conveyor system and method of using said system for reclaiming and leveling grounds |
| 03/10/1987 | US4648776 Continuous loading apparatus and method |
| 03/04/1987 | CN85106133A Bucket transfer machine of chain-bucket dredger |
| 03/03/1987 | CA1218535A1 Mobile pipe conveyor system and method of using said system for reclaiming and leveling grounds |
| 02/19/1987 | DE3529315A1 Bucket-wheel machine |
| 02/03/1987 | CA1217511A1 Suction dredger |
| 10/15/1986 | EP0197833A1 Public works machine such as a scraper-loader |
| 09/24/1986 | CN86101640A Excavating machine |
| 07/15/1986 | CA1207632A1 Universal joint for connecting separate frames in movable pipe conveyor |
| 07/02/1986 | EP0186021A2 Device for recovering of sand, in particular finest sand |
| 07/02/1986 | CA1206930A Pipelaying appliance |
| 06/03/1986 | US4592155 Dredger with transport basin having loading and unloading mechanism |
| 04/23/1986 | EP0178656A1 Method and apparatus for separating from excavated materials the fine and coarse constituents thereof |
| 04/09/1986 | EP0176807A1 Lifting conveyor |
| 04/09/1986 | EP0176502A1 Excavation apparatus |