Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8028759 | Prescision hoe opener with swing link between cylinder and shank A precision hoe opener assembly is provided with improved accuracy of seeding as well as improved control over the opener and packer wheel assemblies. The opener assembly includes a hydraulically-driven parallel linkage assembly, a lost motion linkage, a hoe opener,... | 10/04/2011 |
| 8011440 | Precision hoe opener assembly with adjustable packer wheel location A precision hoe opener assembly is provided with improved accuracy of seeding as well as improved control over the opener and packer wheel assemblies. The opener assembly features a hydraulically-driven parallel linkage assembly, a ground engaging tool, and an adjus... | 09/06/2011 |
| 7866410 | Precision hoe opener with swing link between cylinder and shank A precision hoe opener assembly is provided with improved accuracy of seeding as well as improved control over the opener and packer wheel assemblies. The opener assembly includes a hydraulically-driven parallel linkage assembly, a lost motion linkage, a hoe opener,... | 01/11/2011 |
| 7798244 | Precision hoe opener with swing link and biasing member A precision hoe opener assembly is provided with improved accuracy of seeding as well as improved control over the opener and packer wheel assemblies. The opener assembly includes a hydraulically-driven parallel linkage assembly, a lost motion linkage, a biasing mem... | 09/21/2010 |
| 7222444 | Coordinated linkage system for a work vehicle A work vehicle with a tool pivotally attached to a linkage, an actuator for controllably moving the tool about its pivot, and a tilt angle sensor for sensing the absolute angle of the work tool relative to the earth. A controller is adapted to perform an auto-hold f... | 05/29/2007 |
| 7140178 | Hydraulic arrangement A hydraulic arrangement is provided, including: a hydraulic cylinder that is provided with a first and a second chamber, a hydraulic reservoir, a hydraulic fluid feeder conveying hydraulic fluid, a hydraulic accumulator, a hydraulic line arranged between the hydraul... | 11/28/2006 |
| 7108075 | Seedbed preparation implement having rotary disc with adjustable gang angle A disc gang is provided that is suitable for use as part of a multifunctional seedbed preparation implement or in a standalone disc harrow. The disc gang is configured to permit a gang angle of the disc gang to be adjusted to accommodate differing soil conditions an... | 09/19/2006 |
| 6935434 | Hitch control system with spring centered control lever A hitch control system controls a vehicle hitch to which implements can be attached. The hitch control system includes a spring-centered primary command lever which is manually moveable from a centered position to deflected positions, and which automatically returns... | 08/30/2005 |
| 6698523 | Electrohydraulic control system for implement lift cylinders Different sections of an agricultural implement can be raised and lowered independently and by varying amounts by a unique hydraulic system. That system incorporates a three-position, four-way primary control valve which selectively connects a supply line... | 03/02/2004 |
| 6382326 | Implement suspension with accumulator An implement frame supported by hydraulically controlled lift wheels includes accumulator structure which is selectively connectable by valve structure to the lift cylinder circuit to control flow between the cylinder and accumulator according to implemen... | 05/07/2002 |
| 6164385 | Automatic depth control system and method An automatic depth control system is disclosed. The system includes a Console and remote Controller mounted in the tractor cab, power beyond Valving, and Depth Sensors, either ground contact or non-ground contact, mounted on the frame of the implement. Th... | 12/26/2000 |
| 6129157 | Bypass system for electronically controlled implement lift An implement lift with a plurality of individual electrohydraulically controlled lift cylinders spaced on a tool frame includes a bypass system for facilitating continued implement operation in the event of a failure of the electronics or wiring. The syst... | 10/10/2000 |
| 6089327 | Bottom cultivating machine and field cultivating machine for forming soil layer having uniform field A bottom cultivating machine including a laser emitter for emitting a plane signal of a laser beam, a laser detector which is secured to a frame and detects the plane signal to output an attitude control signal, a horizontal detector having a horizontal s... | 07/18/2000 |
| 5957218 | Electrohydraulic control of implement lift cylinders An implement lift system including a plurality of individual electrohydraulically controlled cylinders spaced on a tool frame and connected to lift wheel. An implement control unit (ICU) in the towing vehicle cab is connected to feedback potentiometers or... | 09/28/1999 |
| 5709271 | Agricultural planter An agricultural planter comprises a frame with a plurality of wheels and adapted to be towed by a tractor. The planter has a plurality of row planting units mounted on the frame and carrying planting implements, and the planting units are vertically movab... | 01/20/1998 |
| 5682954 | Upper hitch link electronic draft sensing A draft control mechanism for a tractor having a three-point hitch for attachment of a ground-engaging implement. The draft control mechanism utilizes an upper link arm connected to the tractor with a single load pin which houses a strain sensor for gener... | 11/04/1997 |
| 5653292 | Method and apparatus for automatically controlling the soil penetration depth of zone tillage coulters and the like The zone tillage coulters on a drilling or planting implement are maintained at an essentially constant running depth by control apparatus that includes a programmed microprocessor-based controller and a hydraulic operating system that receives commands f... | 08/05/1997 |
| 5499683 | Soil treating system with hydraulically actuated implement controller A soil treating system having a frame, a first implement to engage soil to effect treatment thereof and mounted to the frame in an operative position in which the implement can be moved vertically relative to the frame, and an hydraulic actuator acting be... | 03/19/1996 |
| 5479992 | Agricultural implement controller to compensate for soil hardness variation An apparatus for generating a signal indicative of the hardness of soil. The apparatus has a frame to be moved relative to soil on which a hardness analysis is to be conducted and a sensing element mounted to the frame so that the sensing element engages ... | 01/02/1996 |
| 5450908 | Spring-cushioned hydraulic depth control system for tillage implements A tillage implement has its residue incorporating gangs of discs hydraulically adjustable on-the-go to vary the extent of residue incorporation. Cylinders connected with the gangs are of matching volumetric capacities and are connected in a series hydraul... | 09/19/1995 |
| 5310231 | Shovel depth determiner An improvement to a shovel used while grading or cleaning out the area adjacent to a previously constructed surface such as a curb and gutter adjacent to a road bed comprising a guide for fixing the depth the shovel blade can penetrate the soil, aggregate... | 05/10/1994 |
| 5235922 | Planter with equalizer between gauge wheels For multi-row planting a seed planter having furrow-opening discs and associated gauge wheels the independent support arms of which are operatively interconnected by an equalizer arm whereby the combined load carried by the gauge wheels is distributed sub... | 08/17/1993 |
| 5178220 | Device for controlling the attitude of an implement drawn by an agricultural machine The device is mounted in an agricultural machine comprising two links for drawing an implement, a lifter member and a central control unit for controlling the member. The device comprises: two horizontal bars carried in the form of brackets from the chass... | 01/12/1993 |
| 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 |
| 5046565 | Blade and linkage mechanism with downdraft control Blade mechanisms being operated along the ground have a tendency to draft into the ground unless some positive form of control is provided to prohibit the downdrafting of the blade. In the subject arrangement, a blade and linkage mechanism is provided for... | 09/10/1991 |
| 4932475 | Blade plow with resilient mounting This invention relates to a blade plough suitable for use on undulating ground. The blade plough has a floating blade which is able to pivot irrespective of the drawbar attachment to the tractor. A spring mechanism is provided to bias the blade in an oper... | 06/12/1990 |
| 4837940 | Grader blade height control A height control device for attachment to the end of a grader blade of a motor grader. A gage portion of the device is adjustable for the desired depth of a cut the blade will make with reference to a curb upon which the gage rides.... | 06/13/1989 |
| 4594951 | Regularizing device for the depth of a furrow The device is mounted on a seeder provided with a hopper, with a seed distributor and with a plowshare or work disk. It comprises two lateral gauge wheels mounted on two bearings borne by two arms pivotably articulated around an axis on the chassis of the... | 06/17/1986 |
| 4508178 | Tractor linkage with pitch altitude control connected to sensor ram A plow beam 4 is coupled to a tractor chassis 1 by a three-point linkage having a top link 9 and two bottom links 3. The top link 9 is a double acting control ram 23 which has hydraulic couplings 26,28,25 and 27 which cross-couple the control ram 23 to a ... | 04/02/1985 |
| 4356780 | Equalized furrow forming apparatus for a seed planter An apparatus to be towed that includes a frame supported, rotatably mounted, pair of furrow forming disks that are arranged to substantially contact each other at the approximate point of entry into the soil and diverge apart rearwardly and upwardly, a pa... | 11/02/1982 |
| 4304303 | Three-point hitch draft control The draft control consists of a three-point hitch mechanism which automatically raises or lowers the hitched implement so that a predetermined draft load can be maintained. An increase or decrease draft load on the implement is sensed by an upper hitch ar... | 12/08/1981 |
| 4215495 | Road grade attachment My invention consists of an attachment adapted to be connected to a road grader blade. It has a mounting means in the form of a frame for attachment to the blade, a support carried by said mounting means which in turn carries a curb shoe, the support bein... | 08/05/1980 |
| 4158391 | Soil aerating device Disclosed herein is a soil aerating device which is adapted for connection to a powered vehicle, which includes a first frame rotatably supporting a drum carrying a plurality of core-forming tines adapted to penetrate the ground or turf to be aerated and ... | 06/19/1979 |
