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| Number | Title | Issue Date |
| 7353885 | Apparatus for coupling an implement to a working vehicle The present invention relates to an apparatus for coupling an implement to a working vehicle, having two lower link bars, a length-adjustable upper link bar, and two lifting elements. The end closest to the working vehicle, of each of the lower link bars and the upp... | 04/08/2008 |
| 7174966 | Process of setting the length of an upper steering arm A process of setting the length of an upper steering arm of an attaching device of a tractor. The attaching device includes the upper steering arm with a power drive provided for length setting purposes; a length sensor to determine the actual length of the upper st... | 02/13/2007 |
| 7163068 | Hitch assembly A hitch assembly for use between a prime mover having a pair of moveable arms and a trailed vehicle. The hitch assembly includes a transverse member attached by a pivot attachment to each movable arm at spaced locations on the transverse member. Each of the movable ... | 01/16/2007 |
| 7163216 | One end adjustable torque rod A length adjustment system for a torque rod assembly includes a tubular rod attached to one joint assembly and a solid rod attached to another joint assembly. The solid rod extends into the tubular rod. An adjustment nut attached to the tubular rod threadingly recei... | 01/16/2007 |
| 6971453 | Control system for a three point implement hitch assembly A control system controls a three point implement hitch assembly of a tractor. The three point implement hitch assembly includes an upper link and two lower links. The upper link includes an adjustable length double acting hydraulic unit. The position of each lower ... | 12/06/2005 |
| 6915862 | Three point hitch for utility vehicle A three point hitch for a cart-type utility vehicle wherein the utility vehicle comprises a vehicle frame that includes an axle housing and an upper frame cross member. The three point hitch comprises a pair of spaced apart lower draft links, each pivotally mounted ... | 07/12/2005 |
| 6655468 | Device for attaching farm implements to a tractor A device for attaching farm implements to a tractor incorporates a top link having a central body inserted inside a sleeve. Two handles are integral with the sleeve on opposing sides and having respective projecting ends. A hook is provided on the top lin... | 12/02/2003 |
| 6253859 | Lifting device for the lower steering arms of an attaching device of a tractor A lifting device for lower steering arms of a tractor has a position recording device (25). The position recording device (25) generates a position signal representing the pivot position of the lower steering arms (2, 3). A piston-cylinder unit (11, 12) a... | 07/03/2001 |
| 6062321 | Lifting device, particularly a front lift for an agricultural tractor or the like A lifting device comprising: a backframe (1) equipped at its bottom with a pair of arms (4); lifting element (R) between the pair of arms (4) and the backframe (1), and two forearms (10a) mounted on each side of the pair of arms (4) on an articulation spi... | 05/16/2000 |
| 6044916 | Agricultural implement with down-force control Down-force control is provided by a top-link, which presses down the rear end of a tool-bar carrying multiple rows of seeder tools. The height of the tool bar is set front and rear during operation. The top-link includes a hydraulic ram. The ram is suppli... | 04/04/2000 |
| 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 |
| 5931234 | Multi-purpose retractable tractor toolbar device The present invention is a multi-purpose tractor toolbar device which is designed to be attached to a conventional tractor. The toolbar includes a first frame section and a second frame section. The first frame section is slideably mounted to the second f... | 08/03/1999 |
| 5730227 | Hitching device for attachment to a tractor A hitching device for attachment to a three-point hitch of a tractor has a frame removably coupled to and extending between the draft links of the three-point hitch. The frame has a horizontal member adapted to allow attachment of an implement. The horizo... | 03/24/1998 |
| 5697454 | Three-point hitch assembly A hitch assembly is disclosed for use with endless track land vehicles that allows an implement mounted by a three-point hitch arrangement up to about 15 degrees arcing movement off the longitudinal axis oriented in the direction of travel of the land veh... | 12/16/1997 |
| 5397200 | Spreader/grader with adjustable transverse blades A spreader/grader attachable to a three point hitch of a tractor and including a pair of longitudinally extending, parallel, transversely spaced side pans or frame members oriented in fixed relation to each other and operatively connected to a three point... | 03/14/1995 |
| 5332046 | Agricultural machine with plow having changeable penetrating angle An agricultural machine including a fixed mast secured to a frame body so as to be projected from a front end portion of the frame body, a movable mast which is pivotably mounted to the fixed mast so as to be arcuately movable in an agricultural working d... | 07/26/1994 |
| 5228522 | Lift assist and cushion spring tool bar wheel for agricultural implements A agricultural implement incorporates a frame which is adapted to engage a three point hitch of a tractor. The frame employs a longitudinally extending member which is pivotally connected to a link member. A resilient yielding assembly is disposed between... | 07/20/1993 |
| 5092409 | Coupling and lifting system for an implement, in particular an agricultural implement, that can be mounted on the front of a tractor A system includes two lower articulated longitudinal arms (6, 7) provided on their front ends with two bottom hitching points (8, 9), and an upper arm (10) in the middle, for hitching an implement at a third point; valves for controlling the rise and desc... | 03/03/1992 |
| 5029650 | Adjustable quick attaching hitch coupler A vertical angle adjustable quick-attaching coupler for attaching an implement to the three point hitch of a vehicle. The coupler comprises a coupler frame, attachment means for pivotally mounting the coupler to the three point hitch of the vehicle, hook ... | 07/09/1991 |
| 4858698 | Weight transfer linkage arrangement A weight transfer linkage arrangement for connection between the three-point hitch of a tractor, a tool bar carrying agricultural implements and a hitch. The linkage arrangement includes a first parallel linkage connecting the tool bar and the hitch and a... | 08/22/1989 |
| 4821810 | Agricultural and construction utility blade The utility blade assembly for use on tractors having a three-point hitch connection. The blade assembly includes an elongated boom having a turntable mounted on the rear end thereof. The turntable carries a utility blade. Hydraulic piston and cylinder su... | 04/18/1989 |
| 4817730 | Hydraulic weight transfer system for an implement with a lift assist wheel An improved hydraulic circuit for raising and lowering a three-point hitch-mounted implement having a lift assist assembly and for selectively lowering the lower draft links of the three-point hitch to transfer implement weight to the rear wheels of the t... | 04/04/1989 |
| 4805322 | Excavating blade assembly A blade assembly is adapted to be connected to the conventional three-point hitch of a farm tractor. A generally horizontal boom pivotally carries at its rear end a blade bucket which is swingable by means of a pair of double-action hydraulic jacks pivote... | 02/21/1989 |
| 4778194 | Tractor hitch and adjustable arm A multi-arm tractor hitch with an improved adjustable arm having a pair of threaded end members with slots therealong, a middle member engaged with the end members in turnbuckle fashion, a locking member movably, preferably pivotably, attached to the midd... | 10/18/1988 |
| 4715770 | Power lift for a lifting device A power lift system includes a lifting device with lower links. The lower links are connected to a frame of the tractor by arms of an upper link. The lower links may be either vertically pivotably or rigidly coupled to the arms. The arms may be either rig... | 12/29/1987 |
| 4709941 | Telescopic adjusting crank for tractor 3-point hitch The telescopic adjusting crank for adjusting a lift link of a tractor 3-point hitch consists of an upper outer tube, an inner shaft and a slide tube wherein the slide tube is fixedly connected to the upper end of the inner shaft and is slidably positioned... | 12/01/1987 |
| 4558881 | Tractor-mounted implement hitch arrangement An improved, integrated three-point hitch arrangement is disclosed which includes a mounting arrangement for conveniently effecting a fixed connection to a tractor or the like. The hitch includes a pair of upper and lower arms pivotally connected to a mou... | 12/17/1985 |
| 4553605 | Work-vehicle with rolling-control mechanism A work vehicle with a rolling-control mechanism, having a ground-engaging implement to be connected via a three-point link mechanism adapted to be free to effect adjustment with respect to the connection positions, has a sensor to detect slanting of the v... | 11/19/1985 |
| 4531757 | Tractor hitch arrangement A tractor hitch assembly including clamps mounted to the lower frame portion of a tractor. Each clamp comprised of a lug having a plurality of vertically elongated seats, and a clip pivotally mounted to the lug and having a plurality of vertically aligned... | 07/30/1985 |
| 4529041 | Soil scraper and leveler The soil scraper of the present invention is adapted for use with a tractor or vehicle having a three point hitch. The device includes an elongated frame having a three point hitch receptacle mounted on its forward end and having an elongated scraper blad... | 07/16/1985 |
| 4506741 | Levee gate cutter A farm implement adapted to install plastic lined irrigation gates in rice levees and the like to aid in flood control. The machine comprises an elongated, rigid frame comprised of a trio of rigid struts. The rear of the frame terminates in a rigid scoop ... | 03/26/1985 |
| 4409911 | Listing and bed shaping apparatus with planter attachment and method A combination listing and bed shaping apparatus for use with a self-propelled vehicle having a three-point hitch. A tool bar assembly is provided which is secured to the three-point hitch so that tool bar assembly extends in a generally horizontal directi... | 10/18/1983 |
| 4397359 | Tractor hitch with yoke having pivotally supported upper end A hitch system includes a yoke pivotally supported by the ends of a rockshaft extending from the sides of the tractor housing. The yoke includes left and right side panels and a two-piece bottom. A drawbar is pivotally coupled to the yoke between the two ... | 08/09/1983 |
| 4356644 | Root grubbing plow A grubbing plow mounted on two lower arms and an upper attachment point of a 3-point tractor hitch includes a frame having (1) a horizontal pivotal bar journaled at opposite ends thereof on the lower hitch arms; (2) an upper crank arm; and (3) a lower mem... | 11/02/1982 |
| 4355475 | Root grubbing plow A grubbing plow mounted on two lower arms and an upper attachment point of a 3-point tractor hitch includes a frame having (1) a horizontal pivotal bar journaled at opposite ends thereof on the lower hitch arms; (2) an upper crank arm; and (3) a lower mem... | 10/26/1982 |
| 4337834 | Implement to be mounted on a tractor for the loosening of soil An implement for loosening soil arranged to be propelled by a tractor includes at least one supporting structure extending transversely of the direction of travel of the tractor and at least two agricultural tools releasably connected to the supporting st... | 07/06/1982 |
| 4336844 | Farm implement There is disclosed a farm implement having a frame connectible to a tractor by means of a three-point hitch to permit it to be moved forwardly over the ground level, a first set of chisels supported on the frame in laterally spaced-apart relation, a secon... | 06/29/1982 |
| 4299290 | Grading machine and blade moving structure therefor A mobile grading machine and method with a scraper structure including a grading blade supported by caster wheels trailing therebehind. A trailing connection is disposed between the scraper structure and the caster wheels in fixed lateral relation relativ... | 11/10/1981 |
| 4234129 | Mounting device for agricultural spreading machines A mounting device for mounting a spreading machine on a tractor. The device (FIG. 2; a front view) comprises an upright frame 2 outfitted with linkages for connection to the tractor and the spreader and a hydraulic system 20 for adjusting the elevation of... | 11/18/1980 |
| 4193458 | Tractor and implement and hydraulic system therefor A hydraulic system is provided for an integrally-mounted agricultural implement which permits control of the tractor three-point hitch rockshaft cylinder, upper draft link hydraulic cylinder and lift assist hydraulic cylinder through a single valve contro... | 03/18/1980 |
