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| Number | Title | Issue Date |
| 7992650 | Air spring down-pressure system for implement An implement with a ground working tool mounted on an arm pivotably movable between raised and lowered positions includes a pneumatic down pressure control system. The down pressure control system includes upper and lower mounts with an air spring located between th... | 08/09/2011 |
| 7823651 | Trip mechanism for a ground working tool A system and method for operating a ground working tool having attached thereto an implement includes a trip mechanism. The trip mechanism includes a generally horizontally oriented hydraulic cylinder configured to be biased into an extended position to engage the i... | 11/02/2010 |
| 7543656 | Breathing for single acting hydraulic cylinders A single acting hydraulic cylinder apparatus includes a mechanism operated by a single acting hydraulic cylinder, the mechanism including a hollow member. A breathing chamber is provided by sealing at least a portion of the hollow member such that outside air is pre... | 06/09/2009 |
| 7168226 | Independent hydraulic header lift and flotation system A hydraulic lift/flotation system for the header of a crop harvesting machine wherein each side of the header is supported by a single cylinder, which performs both the flotation and lift functions. For even lifting and flotation of an unbalanced header, each cylind... | 01/30/2007 |
| 6986313 | Dual material agricultural delivery system for seeder A compression system for a dual material delivery assembly for mounting on a frame alongside a plurality of similar assemblies is described. The assembly includes a furrowing knife for producing a furrow in the ground as it is towed across the ground. A fertilizer t... | 01/17/2006 |
| 6142085 | Hydraulic compression system for seeder A compression system for a dual material delivery assembly is described. The assembly includes a furrowing element for producing a furrow in the ground as it is towed across the ground. A fertilizer tube and a seed tube are provided for depositing fertili... | 11/07/2000 |
| 5954139 | Tillage knife with hydraulic reset apparatus Soil tillage apparatus with a hydraulic reset mechanism has a rigid vertical shank mounted to an elongate arm fixed below a lower plate which is pivotable upon an upper plate. The upper plate is adapted for mounting to an agricultural tool bar. A hydrauli... | 09/21/1999 |
| 5921010 | Flow blade operating system A plow blade operating system having a plow or scraper is configured to quickly and retractably overcome obstacles that are encountered during plowing, scraping, and leveling activities without the need to recharge or reset the system pressure after the o... | 07/13/1999 |
| 5372204 | Power tractor hitch relief system A power hitch relief system for a three-point hitch used in tractors and similar vehicles. The power hitch relief system includes an inclination detector in the form of a weight pivotally mounted to the tractor frame. The weight is also coupled to a relie... | 12/13/1994 |
| 5234060 | Pressure and depth control in agricultural implement A soil contacting implement and depth gauging wheel at a predetermined vertical distance from the implement are provided for attachment to a tractor. Upward or downward movement of the wheel on the soil causes a deviation from the predetermined vertical d... | 08/10/1993 |
| 5210964 | Spot mounder method and apparatus Method and apparatus for forming spot mounds used in assisting the germination and growth of tree seedlings in reforestation. A crawler moves forwardly while a digging blade connected to a frame is lowered into the soil in order to overturn the soil and f... | 05/18/1993 |
| 5094017 | Direct driven type shock ripper device A direct driven shock ripper device according to the present invention is capable of efficiently transferring blows of a hydraulic breaker (10) to a base rock. It includes a bracket (2) which can be affixed to the rear end of a construction machine vehicl... | 03/10/1992 |
| 4945663 | Apparatus and method for forming and compacting planting mounds Planting mounds for afforestation purposes and the like are formed by an apparatus wherein a device having at least one mound-forming and compacting body is provided on a movable support arm or boom of a carrier vehicle adapted to be driven along the grou... | 08/07/1990 |
| 4924946 | Apparatus for deep plowing highly compacted soil Apparatus for deep plowing highly compacted soil includes successively forming troughs of loosened soil immediately adjacent a previously formed trough. After each pass the plow leaves a trough of loosened soil having a transverse vertical profile (called... | 05/15/1990 |
| 4923014 | Agricultural implement with gas springs and control An agricultural implement is provided with trailing swing arms, each of which has a trailing wheel. Each swing arm is provided with a lifting device in the form of a piston operating in a cylinder. This lifting device establishes the height at which the i... | 05/08/1990 |
| 4867247 | Bedding plow A bedding plow providing a plurality of disks as plowing members each independently supported by a rearwardly located bearing supported by a trailing arm, which is supported, in turn, by a pivotal connection perpendicular to a fore to aft alignment of the... | 09/19/1989 |
| 4828043 | Device for adjusting the distance between soil-working tools A device for adjusting the distance between soil working tools such as plow bodies (5) disposed beside each other and fitted to sleeves (7) movable along a bar (3). Slewing brackets (11, 14, 15) for defining the movements of the sleeves (7) along the bar ... | 05/09/1989 |
| 4679635 | Self-tripping rippers A ground ripping attachment for pivotal connection to the drawbar of a winch, and liftable by cable on a towing vehicle to clear the ground, or releasable so as to be free of the tractor save for its drawbar connection. The attachment has a main frame whi... | 07/14/1987 |
| 4660652 | Hydraulic trip mechanism A trip mechanism which allows the ground working tool of an implement to pivot about three orthogonal axes. The tool is connected to a shank which is attached to a carriage. The carriage is pivotally connected to the frame of an implement through a ball j... | 04/28/1987 |
| 4648466 | Furrow opener operating apparatus There is described a furrow opener apparatus capable of operating in a furrowing mode and a carrying mode. The apparatus consists of a double acting hydraulic cylinder having one end connected to a furrow opener drag arm and the other end connectable to a... | 03/10/1987 |
| 4605072 | Soil cultivating apparatus Soil cultivating apparatus is provided including a cultivating tool for entering into the soil, and control means responsive to the force exerted on said tool by an obstacle encountered by said tool as the tool is drawn through the soil to lift the tool o... | 08/12/1986 |
| 4546832 | Agricultural implement with spring cushion for vertically adjustable subframe An agricultural implement has a main pull-type frame carrying a first set of ground-engaging tillage tools and a subframe carrying a second set of tillage tools. A lift mechanism including an hydraulic cylinder operated from the operator's position on the... | 10/15/1985 |
| 4506464 | Hydraulic breakaway system for mobile cutting apparatus A prime mover (A) has an arm assembly (B) pivotally connected thereto. A cutting assembly (C) is operatively connected with the arm assembly to be positioned thereby. The arm assembly is connected to the tractor to pivot about both vertical and horizontal... | 03/26/1985 |
| 4506609 | Trash seeder An agricultural implement for seed planting having a series of independent planter units at the rear of a frame with the planter units connected to the frame in such a manner that the press wheels of the planter units form the rear wheels of the implement... | 03/26/1985 |
| 4505337 | Plow jump mechanism A jump mechanism for a plough having a frame and at least one digging shank, the jump mechanism includes a main draw bar pivotally coupling the shank to the frame so that the shank can pivot about each end of the bar and a movement control bar also pivota... | 03/19/1985 |
| 4422511 | Hydraulic reset for tillage and seeding equipment An hydraulic ram is situated between the tillage tool and the frame and is normally fully extended and acts as a rigid link. The ram has a predetermined and adjustable pressure so that if an obstruction is encountered by the tool, it only retracts when th... | 12/27/1983 |
| 4393943 | Telescoping carrier for forestry equipment A forestry cultivation instrument, particularly a scarifier, is attached to a telescoping carrier. In operation, the carrier is connected to a vehicle and, when an obstacle is encountered, the carrier may telescope outwardly thereby reducing shock loading... | 07/19/1983 |
| 4387910 | Coupling member An overload coupling member is used as a strut to interconnect the upper link of a tractor lift device with an implement, such as a cultivator. The member includes two portions that are moved towards one another upon overload to allow the implement to piv... | 06/14/1983 |
| 4364191 | Piling rake A rake for use with tractors has a blade connectable to a tractor and a plurality of teeth extending from the bottom of the blade. The teeth are pivotally connected to permit movement of the teeth away from objects encountered when the tractor moves. Flui... | 12/21/1982 |
| 4353421 | Soil preparing device for preparing forest soil A soil preparing device for preparing forest soil to a planting bed. The device comprises a frame intended to be mounted on a forest tractor, a support arm mounted on the frame pivotally around a horizontal link, and a preparing element supported by a sli... | 10/12/1982 |
| 4353423 | Hydraulic reset for tillage and seeding equipment An hydraulic ram is situated between the tillage tool and the frame and is normally fully extended and acts as a rigid link. The ram has a predetermined and adjustable pressure so that if an obstruction is encountered by the tool, it only retracts when th... | 10/12/1982 |
| 4341149 | Selectively actuatable fluid control system for a work element A fluid control system for selectively holding a work implement, such as a blade in a motor grader or the like, in a fixed position in a first operation mode, and for selectively providing a shock absorbing system (70,72) for the implement in a second ope... | 07/27/1982 |
| 4320589 | Snowplow apparatus An improved snowplow apparatus provided with articulated quadrilateral means permitting vertical movement of a snow clearing blade which is kept in a lowered position by a compressed gas accumulator communicating with one or two hydraulic cylinders connec... | 03/23/1982 |
| 4269535 | Earth working implement control system An operating and down-pressure hydraulic control system for vehicle-mounted implements such as earth compactors and the like. The assembly of hydraulic cylinders, valving and a hydraulic accumulator provided herein operates as a hydraulic system to raise,... | 05/26/1981 |
| 4249614 | Implement An implement has subsoil tines interconnected to a beam of the frame. At least one of the tines has an upper fastening portion pivoted to a beam of the frame. An overload device also interconnects the fastening portion to the beam so that upon overload on... | 02/10/1981 |
| 4209067 | Draft control and tail beam device for ground working discer type agricultural implements and the like A cultivating implement such as a discer is provided with a coulter disc engageable with the ground and secured to the tail beam with the depth being preset by the hydraulic setting of the main disc gang. A fluid operator is included at a preset pressure ... | 06/24/1980 |
| 4187763 | Overload relief valve An overload relief valve for use in preventing damage to the hydraulic system for adjustably positioning a working element, such as a blade. A single relief valve permits relief of high fluid pressure developed in either of the control cylinders by provid... | 02/12/1980 |
| 4123859 | Shock absorbing system for suction dredgers A dragged suction dredger, comprising a suction pipe provided with a dragged suction head having a housing with a recessed suction nozzle and a cutting tool extending, in the cutting position, into the ground and being pivotally mounted on the housing and... | 11/07/1978 |
| 4102402 | Subsoiler An implement having an elongated tool extendable into the subsoil to break up the hardpan and open the subsoil for moisture and tap roots of plants. The tool has orbital motion generated with power driven eccentric structures coupled to the tool. Power is... | 07/25/1978 |
| 4062410 | Adjustable moldboard for variable speed plowing A plow bottom is pivotally connected to the stub beam on a substantially vertical axis and yieldable biasing devices are provided which permit the moldboard to pivot about the axis as plowing speed is increased. Both mechanical and fluid biasing devices a... | 12/13/1977 |
