Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8176992 | Electronically controlled hydraulic system for an agricultural implement A hydraulic control apparatus for a foldable farm includes first hydraulic control system is used to control weight transfer to ground engaging tools mounted to a stationary and foldable wing frame sections. A second hydraulic system is used to fold and unfold the w... | 05/15/2012 |
| 7861795 | Implement transport An implement apparatus includes a hitch frame, center frame section, and right and left wing sections pivotally attached to the center section. An actuator pivots the center frame section upward about the hitch frame axis at the rear of the hitch frame to raise the ... | 01/04/2011 |
| 7438137 | Method and apparatus for locking a wing frame of an implement A method and apparatus for use with an agricultural implement assembly that includes a support frame, a wing frame and a cylinder assembly that includes a cylinder and a rod, each of the support frame, wing frame, cylinder and rod being an assembly component, the ro... | 10/21/2008 |
| 7401657 | Ground scraper A ground scraper designed to be pulled by a tractor or the like includes a pair of parallel frame rails with a scraper blade between them and perpendicular to them. The scraper blade can lowered to a preferred depth of scraping and can be raised above the bottom of ... | 07/22/2008 |
| 7367407 | Towed snowplow and method of plowing A towed snowplow includes a frame which is carried by at least one wheel. The frame includes at least one moldboard and is arranged to be towed behind a vehicle and movable from a transport position directly behind the vehicle to a deployed position in which the fra... | 05/06/2008 |
| 7036604 | Structure for converting an integral implement to a drawn type A forward acting wheel arm for a drawn hitch includes a pivot point directly below the rear rank of the machine frame, and the wheels are rotated directly in front of the front rank during field operation. For transport, the wheels rotate below the front rank to min... | 05/02/2006 |
| 7021394 | Articulating and locking mechanism for farm implement chassis An articulating and locking mechanism of agricultural implement chassis is disclosed, intended for disc harrows and other implements with great working width, which are characterized by articulation to reduce the total width so as to facilitate transportation and st... | 04/04/2006 |
| 7017676 | Support assembly for a flexible line of an agricultural implement A support assembly is configured to carry a series of flexible lines associated with operation of an agricultural implement. The agricultural implement generally includes a main frame bar pivotal about a platform. The support assembly includes a mounting bracket, a ... | 03/28/2006 |
| 6966388 | Offset hitch A heavy gauge agricultural implement hitch is disclosed which is offset such that the implement and the tractor are not directly in line with one another, but allows the tractor to follow the previous crop rows and the implement to be offset of the previous crop row... | 11/22/2005 |
| 6915863 | Planter bar support wheel assembly An agricultural apparatus comprising a carrier frame including a support surface defining an arcuate track about a pivot point, a mainframe mounted to the carrier frame at the pivot point for rotation thereabout between an operating position and a transportation pos... | 07/12/2005 |
| 6810968 | Parallel cylinder lift structure for an implement Double acting cylinders on wheel lift structures of an agricultural implement are connected in parallel and include pilot operated check valve structure connected to the base ends of the cylinders to maintain timing of the lift wheel structure even under large diffe... | 11/02/2004 |
| 6758284 | Structure for converting an integral implement to a drawn type Attachment structure for converting an integral implement to a pull-type implement includes wheel modules which can be placed at different locations along the frame to avoid interference with tool standards or other hardware. Each module includes both a forward gaug... | 07/06/2004 |
| 6745848 | Tower and wheel arm assembly A tower and wheel arm assembly for an implement frame includes a pair of identical single piece pivot castings which are selectively connectible at different locations along the frame and provide both wheel arm pivoting and a cylinder anchor tower pivoting. The whee... | 06/08/2004 |
| 6732812 | Staggered frame element with overlap A transverse rank particularly useful with implement split frame construction includes first and second transversely extending tubular members welded to the fore-and-aft tubes on first and second halves of the frame. The locations of the first and second tubular mem... | 05/11/2004 |
| 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 |
| 6691629 | Planter coulter apparatus with hydraulic overload protection An overload protection apparatus for use with a planter apparatus including a coulter bar and coulter/fertilizer units mounted thereto, the coulter bar pivotally mounted to the underside of a wheel supported carrier frame designed for transport in a trans... | 02/17/2004 |
| 6681866 | Planter hitch apparatus An agricultural apparatus comprising a carrier frame including a support surface defining an arcuate track about a pivot point, a mainframe mounted to the carrier frame at the pivot point for rotation thereabout between an operating position and a transpo... | 01/27/2004 |
| 6679339 | Implement lift and level system with a front mounted direct coupled rockshaft A rockshaft is mounted over the front rank of the implement frame and is operated by cylinders located at opposite ends of the rockshaft connected to lift arms extending radially adjacent bearing mounts. Fore-and-aft extending links aligned with the lift ... | 01/20/2004 |
| 6666155 | Planter with centrally mounted coulter apparatus A planter/fertilizer assembly that can be configured to facilitate either rapid seeding/fertilizing or transport and including an implement bar mounted on a wheel supported carrier frame for rotation between a transport position where the implement bar is... | 12/23/2003 |
| 6581530 | Folding walkway for seeding machine A seeding machine having a wing frame with planting units. The planting units are coupled to the wing frame by a pivot arm. The pivot arms move the planting units between a horizontal working configuration and a vertical transport configuration. An operat... | 06/24/2003 |
| 6530332 | Agricultural earth working apparatus An earth working apparatus is disclosed. The apparatus generally includes a frame, a harrow cultivator connected to the frame and adapted to be angled and adjusted for height with respect to the frame, a plow cultivator connected to the frame and adapted ... | 03/11/2003 |
| 6401832 | Agricultural implement lift wheel structure Lift wheel structure for an implement includes four bar linkage having a curved lower link connected to the frame closely adjacent a first tool-carrying rank. A caster wheel is supported at the forward end of the linkage for castering in an accommodation ... | 06/11/2002 |
| 6382327 | Hinge structure for an implement A hinge structure for a folding implement frame includes a reversible mounting bracket on the wing side of the hinge to accommodate positioning of the mounting around obstructions such as the tool mounting brackets for certain tool spacing arrangements on... | 05/07/2002 |
| 6371215 | Locking rockshaft for tillage implements A frame for a tillage implement includes a pair of opposing frame sections pivotally connected to a central kingpost for a folding movement between a transversely extending working position and a longitudinally extending transport position. The frame sect... | 04/16/2002 |
| 6321852 | Agricultural implement frame having a transport configuration and a working configuration An agricultural implement frame comprises a main frame having ground engaging wheels, a mast extending upwardly and forwardly from the main frame, a truck slidably mounted on the mast, and a carrier frame pivotally mounted to the truck. Two hydraulic lift... | 11/27/2001 |
| 6318477 | Toolbar wing lift control An agricultural implement has a central section and wing sections with ground engaging tools. A hydraulic cylinder is disposed between the wings and the central frame to raise and lower the wings with respect to the central section. A hydraulic control ci... | 11/20/2001 |
| 6213034 | Planter apparatus and method A planter apparatus includes a carrier frame including a curved track portion, and a mainframe rotatably attached to the carrier frame and rotatable along the curved track portion and about a pivot point, which is offset from a centerline of the carrier f... | 04/10/2001 |
| 6205937 | Folding planter frame An agricultural device for transporting planting units which has a first stationary toolbar and a pair of toolbars spaced away and separate from the stationary toolbar and carrying a plurality of planting units thereon at fixed intervals. The pair of tool... | 03/27/2001 |
| 6119792 | Land smoother and packer system A land smoother and packer system for smoothing and packing irregularities in a ground surface. The inventive device includes a frame, a plurality of wheels, a right blade pivotally attached to the frame, a center blade attached to the frame, a left blade... | 09/19/2000 |
| 6112827 | Transport lock for forwardly folding agricultural implements An agricultural planter is provided with wing members that fold forwardly from a laterally extending operating position to a compact transport position. The wing members are supported on wheel assemblies when in both the operating and transport positions.... | 09/05/2000 |
| 6089329 | Implement wing weight transfer apparatus An implement wing weight transfer apparatus is provided according to the invention for an implement having a first panel hinged to a second panel, with the first panel capable of folding with respect to the second panel. The implement wing weight transfer... | 07/18/2000 |
| 5913369 | Air cart manifold lift The present invention relates to an automatic lift mechanism for a manifold in a pneumatic delivery system of an agricultural air cart for seed and fertilizer delivery. The unitary manifold is composed of a plurality of pneumatic passages and mixing valve... | 06/22/1999 |
| 5829536 | Manually pivotable plow using a ratchet wheel and lever connected to a tiebar assembly to vertically adjust a soil cultivating tool A plow having a wheeled frame for towing by a land vehicle. The plow includes a tool carrier pivotally secured to the frame for carrying soil cultivating tools. A ratchet wheel and a lever are pivotally secured to the frame in a side-by-side relationship.... | 11/03/1998 |
| 5810097 | Attachment system for mounting road-maintenance equipment on a vehicle An attachment system for mounting road-maintenance equipment on a vehicle such as a motor grader includes a frame for mounting on the nose plate of the vehicle to support the conditioning equipment forwardly and partly outboard of the vehicle. The system ... | 09/22/1998 |
| 5737859 | Earth leveling apparatus An earth leveling apparatus includes a vehicle having runners for movement in an operative direction, an elongated screw mounted to the vehicle and rotatable on its axis, and extending transversely of the operative direction of movement of the vehicle, an... | 04/14/1998 |
| 5641026 | Frame for agricultural cultivator An agricultural cultivator includes a single elongate tubular tool bar of circular cross section which is split into a center section and two wing sections interconnected with the center section at outer ends thereof through pivot couplings. The center se... | 06/24/1997 |
| 5586603 | Spikes for field aerator Spikes are described for use in apparatus useful for aerating soil, especially grass or hay ground. The elongated spikes are secured to a cylindrical drum. As the apparatus is towed across a field, the spikes penetrate the soil and loosen it as well as pr... | 12/24/1996 |
| 5429195 | Operable coulter frame for farm implements An operable coulter frame is removably mounted on a farm implement of the type having a tool bar with foldable ends. The operable frame includes a central shaft rotatably mounted on the tool bar, and a pair of auxiliary shafts rotatably mounted on the fol... | 07/04/1995 |
| 5161622 | Field cultivator leveling device In combination with a wheeled first cultivator which is pulled by a prime mover and which has a frame assembly to which ground engaging members are attached, an improved implement comprising a frame, a mounting unit for attaching the frame to the rear of ... | 11/10/1992 |
| 5143160 | Chain harrow carts A cart or "caddy" is provided for operation and transport of one or more chain harrows, the cart consisting of a frame running on a pair of road wheels. Different harrow mountings can be mounted on the frame, all of which include a draw bar to which the h... | 09/01/1992 |
