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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7874377 | Circle drive arrangement for motor grader A motor grader is equipped with a circle drive arrangement including a variable displacement motor capable of operating at a high speed for driving the circle at a high speed, as when the blade is elevated above the ground and the grader is turning around for revers... | 01/25/2011 |
| 7021398 | Box scraper assembly A box scraper attachment is provided for mounting on the boom arms of a skid-steer vehicle or the like. The box scraper attachment includes a main frame having castor wheel assemblies mounted at the forward end thereof. A box scraper is selectively vertically movabl... | 04/04/2006 |
| 6851485 | Circle structure of motor grader A circle structure of a motor grader excellent in durability at low maintenance cost. For this purpose, the circle structure includes a drawbar (105), at least one guide shoe (213) attached to the drawbar, an integrated ring-shaped circle gear (211 | 02/08/2005 |
| 6523617 | Motor grader vehicle control arrangement An intuitive control for a motor grader controls the blade high lift assembly by adjustment of a miniature representation available at the operator's station. This miniature representation allows the direction of adjustment of various hydraulic components... | 02/25/2003 |
| 6129156 | Method for automatically moving the blade of a motor grader from a present blade position to a mirror image position A system and method for automatically moving the blade of a motor grader from a present blade position to a mirror image position. The method includes the steps of: providing an electronic controller, blade controls having position sensors, and an input s... | 10/10/2000 |
| 5996706 | Grader circle and beam assembly A circle and beam assembly for a motor grader. The circle and beam assembly of the present invention includes a circle from which two beams extend wherein the beams are oppositely disposed. An opening is defined at the lower end of each beam. A hinge rod ... | 12/07/1999 |
| 5813150 | Scarper apparatus A scraper apparatus is disposed beneath a truck for moving and scraping materials such as snow and ice. The scraper apparatus includes a moldboard scraper which is disposed beneath the truck for moving and scraping materials. A supporting table is dispose... | 09/29/1998 |
| 5782016 | Underbody scraping apparatus with pitch control A scraper apparatus is disclosed for mounting under a body of a truck. The apparatus includes a table having a forward and a trailing end. The forward end is pivotally secured to the body of the truck. The arrangement is such that the table is permitted t... | 07/21/1998 |
| 5529131 | Grading attachment A grading attachment for loader type utility vehicles is provided. The attachment secures to the front of the loader and has an overarching beam which ends in a set of ground engaging wheels. A drawbar is secured to the front of the beam at a ball and soc... | 06/25/1996 |
| 5411102 | Grader blade attachment for small tractors A grader blade unit is provided for ready attachment to small tractors in place of an underslung mower deck. A grader blade is attached to a turntable for pivotable adjustment to selected angular settings. An extensible draw bar affixed to the turntable h... | 05/02/1995 |
| 4700786 | Drag-type road grader A drag-type road grader including a skewable frame and a plurality of blade assemblies extending transversely across the frame. A tongue assembly is mounted on the frame and includes hydraulic cylinders for skewing the frame to alternative parallelogram-s... | 10/20/1987 |
| 4324055 | Moldboard support assembly A moldboard support assembly including a drive frame assembly having one end connectable to the front end of a vehicle. A blade and moldboard support frame is pivotally connected to the other end of the drive frame for pivotal movement about a vertical ax... | 04/13/1982 |
| 4304307 | Scraper blade attachment for tractors A scraper blade attachment including a blade assembly located between the front and rear wheels of the tractor and supported by forwardly extending rail members swingably coupled to the forward end of a tractor frame. The rail members and the blade assemb... | 12/08/1981 |
| 4258797 | Scraper blade undercarriage mounting assembly A scraper blade supporting and positioning assembly is used for mounting a scraper blade on a vehicle having an undercarriage frame and a longitudinal axis corresponding to its direction of travel. The assembly comprises a scraper blade and first and seco... | 03/31/1981 |
| 4213507 | Grading vehicle A grading vehicle including a bridging vehicle chassis between a front axle and its corresponding wheels and a rear vehicle section having at least one axle with corresponding rear wheels, and control equipment mounted on said chassis, which equipment pro... | 07/22/1980 |
| 4206818 | Work vehicle and ring bearing arrangement therefor A work vehicle and method for assembling the vehicle with a ring gear that is rotatably supported by a frame of the vehicle through contact only with bearing strips which maintain the ring gear against movement in any direction other than rotationally abo... | 06/10/1980 |
| 4185700 | Circle mounting and circle assembly for a motor grader An improved motor grader circle mounting and circle assembly has a mounting in which an annular upright wall with an outwardly extending integral top flange and a removable bottom flange form an outwardly open annular cavity. A circle structure of welded ... | 01/29/1980 |
| 4161987 | Tractor grader A tractor grader in which the tractor is lengthened by forwardly spacing the front wheels and having a grader blade mounted between the front and rear wheels. The blade is mounted on a lower turntable and supported adjacent an upper turntable plate by rol... | 07/24/1979 |
| 4099577 | Work vehicle and ring gear bearing arrangement therefor A ring gear bearing arrangement for motorgraders and method for assembling the vehicle with a ring gear that is rotatably supported by a frame of the vehicle through contact only with organic plastic bearing strips which maintain the ring gear against mov... | 07/11/1978 |
| 4084644 | Motor grader or the like with hydraulic control system for circle gear A motor grader including a main frame mounted on steerable wheels, a drawbar frame mounted on the main frame, a working implement carried by a circle gear rotatably mounted on the drawbar frame and a hydraulic control circuit is described. An improvement ... | 04/18/1978 |
| 4074768 | Blade support and control arrangement for a motor grader A motor grader comprises a tractor having a frame extending forwardly therefrom and supported on a plurality of road wheels. A first bracket is universally connected to the frame and is pivotally connected to a second bracket, disposed forwardly thereof, ... | 02/21/1978 |
| 4016936 | Motor grader having improved guide shoes for circle-mounted implement A motor grader including a wheeled main frame and a drawbar structure attached thereto is disclosed wherein a circle-mounted working implement, such as a blade or the like, is supported on the drawbar by improved guide shoes. The improved guide shoes incl... | 04/12/1977 |
| 4015669 | Circle mounting bar and circle assembly for a motor grader An improved circle mounting bar and circle assembly for a motor grader includes a beam with a connecting end, and integral with the other end of the beam is a circle carrying structure in which an annular upright wall with an outwardly extending integral ... | 04/05/1977 |
| 4004641 | Motor grader drawbar assembly with safety clutch mechanism The motor grader drawbar assembly has a blade mounted on a circle gear and a drive gear selectively rotates the circle gear and the blade via a pinion gear engaged with the circle gear and mounted on a rotatable shaft. A slip clutch is interposed between ... | 01/25/1977 |
| 3999615 | Motor grader with circle mounting blade and wedge control system A control system for circle mounted motor grader blades to enable adjustment of the circle and blade supported thereby about the axis of the circle is disclosed. The system includes a circle holding mechanism for reducing wear between the circle and the m... | 12/28/1976 |
| 3989112 | Motor grader drawbar assembly with fluid-operated cylinders for restraining circle gear The motor grader drawbar assembly has a blade mounted on a circle gear and a drive unit operatively connected to the circle gear to selectively rotate it and the blade. A plurality of radially mounted pistons operate against an upright wall of the circle ... | 11/02/1976 |
