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| Number | Title | Issue Date |
| 8118111 | Grader stabilizer The present device is generally a stabilizer bracket for small to mid-sized skid steer vehicles used to grade earth using a dozer blade in conjunction with remote grade control equipment (such as laser automation or other automated leveling system). The device is mo... | 02/21/2012 |
| 7284621 | Ground levelling apparatus Tractor towed ground levelling apparatus includes an elongate cutting edge mounted on a cylindrical steel beam. The beam carries road wheels and is connected to a foldable drawbar hitched to the plough arms of the tractor. Alternatively, the drawbar may be connected... | 10/23/2007 |
| 6948267 | Device for optimization of the thickness of an ice layer An ice resurfacing machine laser control is used to optimize the ice layer on an artificial ice track, such as an ice hockey rink and is adapted for use in ice resurfacing machines. The thickness of an ice layer is optimized with a beam for a laser transmitter. The ... | 09/27/2005 |
| 6286606 | Method and apparatus for controlling a work implement A method and apparatus for controlling a work implement movably connected to a work machine. An implement controller automatically controls simultaneous first and second control modes of operation assigned to the work implement. A sensor applies a signal ... | 09/11/2001 |
| 6032746 | Road leveller A bogie is attached to a three point hitch of a tractor and serves to control the up and down movement of a scraper blade. The bogie comprises an articulated frame having a pair of spaced side rails each connected to a separate lower link of the hitch. An... | 03/07/2000 |
| 4239251 | Compensating hitch A compensating hitch adapted to be coupled between a three-point draft system at the rear end of a wheeled tractor and the front end of a trailing earthworking implement which is wheel supported rearwardly of an earthworking blade thereof; the hitch inclu... | 12/16/1980 |
| 4236587 | Ground-working apparatus and hitch assembly therefor Land leveling apparatus includes a leveling attachment drawn by a tractor with the attachment having pivotally connected side blade sections on a central blade section affording a substantially greater leveling capacity. The side blade sections fold up to... | 12/02/1980 |
| 4236586 | Land leveling apparatus with section blade assembly Land leveling apparatus includes a leveling attachment drawn by a tractor with the attachment having pivotally connected side blade sections on a central blade section affording a substantially greater leveling capacity. The side blade sections fold up to... | 12/02/1980 |
| 4053018 | Automatic control system for earth-moving equipment The cutting angle or cutting depth of the blade of an earth-moving equipment such as a bulldozer is adjusted by a hydraulic pressure cylinder and the supply of pressurized liquid to and from the hydraulic pressure cylinder is controlled in accordance with... | 10/11/1977 |
| 4019268 | Apparatus for compacting snow for skiing This invention is directed to an apparatus for compacting snow for skiing and snowmobiling. It includes an elongated snow compacting member with means which permit its ends to move upwardly and downwardly so that when one end contacts an elevated snow sur... | 04/26/1977 |
