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| Number | Title | Issue Date |
| 7434653 | On-demand electro-hydraulic steering system A hydraulic steering system for a work machine may include a first steering actuator having a first and a second chamber. In addition, the steering system may include a second steering actuator having a third and a fourth chamber. A multi-position directional valve ... | 10/14/2008 |
| 7434652 | Hydraulic power steering apparatus An oil pressure regulating valve of rotary type comprising a valve body and a valve spool is constructed inside a housing having a cylindrical shape. An oil supply port for supplying pressure oil fed from an oil pressure generation source is formed at a position hav... | 10/14/2008 |
| 7354222 | Belted asphalt compactor A belted asphalt compactor and method are provided. The compactor includes a first unit with a roller frame. A second unit is coupled to the first unit, and is generally identical thereto. At least one mid roller and two end rollers are mounted in the roller frames,... | 04/08/2008 |
| 7325636 | Front-wheel drive steering compensation method and system A method of controlling the speed of a right front wheel and a left front wheel on a work machine includes receiving a speed command based at least partially on an operator input and monitoring at least one wheel steering angle of at least one front wheel. A first f... | 02/05/2008 |
| 7199536 | Power steering device An electric power steering apparatus provides stable steering assist force by positively precluding actuation of an electric motor while it is rotating in a reverse direction, so as to prevent demagnetization of the electric motor. A motor reverse rotation detecting... | 04/03/2007 |
| 7164978 | Vehicle electro-hydraulic power steering unit A vehicle electro-hydraulic power steering unit includes: a steering mechanism steering a steering wheel in a steering direction; an electro-hydraulic pump; a piston mechanism assisting the steering mechanism in a steering direction; a hydraulic circuit causing an a... | 01/16/2007 |
| 7152709 | Industrial vehicle A steering system for steering front and rear wheels of an industrial vehicle has an upper frame rotatably coupled on an upper side of a lower frame, a steering system rotating the front and rear wheels in a predetermined direction as a steering wheel is rotated, a ... | 12/26/2006 |
| 7142956 | Automatic steering system and method An automatic steering system and method are provided for a vehicle including an hydraulic primary steering system. The automatic steering system includes a guidance module with a GPS receiver and a microprocessor adapted to process and store GPS data defining travel... | 11/28/2006 |
| 7086660 | Forced steering device and trailer The invention refers to a forced steering device of a vehicle, with a master cylinder, which extends between the vehicle-stationary point and a point following the steering movement and is connected to a slave cylinder coupled for the forced steering of a wheel. It ... | 08/08/2006 |
| 7040428 | Chassis structure for a forest machine The invention relates to a chassis structure for a working machine moving on a terrain, the chassis structure comprising a pair of front wheels and a pair of rear wheels supporting the frame, and a controlled frame joint between the frame parts, when the frame is co... | 05/09/2006 |
| 6932373 | Articulated pendulum steering system An articulated pendulum steering system for an articulated vehicle having a front vehicle section and a rear vehicle section, the system including a vertical bearing pin supported by at least one movable joint support, and a movable joint pin supported by at least o... | 08/23/2005 |
| 6874800 | Hospital bed wheel linkage apparatus A patient support including a linkage assembly providing communication between at least one front wheel and at least one rear wheel. ... | 04/05/2005 |
| 6725963 | Energy saving control system and method for reducing power consumption of an electro-hydraulic power steering system for a hybrid vehicle An energy saving system and method reduces power consumption of an electro-hydraulic power steering system of a hybrid vehicle. The electro-hydraulic power steering system includes a first controller that communicates with an electric motor that is coupled to a hydr... | 04/27/2004 |
| 6684975 | Method for steering a vehicle and steering system therefore A method for steering a vehicle and a steering system (1) comprises: a vehicle, with a first wheel steering arrangement (10), and a second articulated steering arrangement (11), a steering unit (2) which is common for both steering (10, 11) arrangements a... | 02/03/2004 |
| 6659218 | Steering system A steering system comprises a hand wheel positioned for manipulation by a driver, a steering shaft extending from the hand wheel, and a magnetic column lock. The steering shaft is supported by a steering column housing so that it can rotate on its own axi... | 12/09/2003 |
| 6655492 | Steering system and method for steering a vehicle A steering system and a method for steering a vehicle, that has a wheel steering and an articulated steering. The steering system (1) has a steering unit (2), a first steering motor arrangement (7), which acts upon steered wheels, a second steering motor ... | 12/02/2003 |
| 6595314 | Hydraulic steering system, for an articulated vehicle with wheel steering A hydraulic steering system (1) for a vehicle with two steering motor arrangements, particularly an articulated vehicle with wheel steering, with a hydraulic steering unit (2) having a measuring motor section (22, 23), with a selection valve (6), which co... | 07/22/2003 |
| 6533061 | Bolt-together hitch for articulated machine A bolt-together hitch for a machine having articulatable first and second sections, including a generally annular yoke member of cast steel having a cylindrical portion which is trunnion mounted by bearings in a longitudinal bore formed by the first secti... | 03/18/2003 |
| 6505701 | Steering system for a vehicle A steering system (1) for a vehicle with a first steering arrangement (6), with a first sensor (7), with a second steering arrangement (8), which includes an articulated steering, which has a second sensor (9), and with a steering unit (5). To improve the... | 01/14/2003 |
| 6488114 | Grain cart An improved grain cart is able to hold more grain with reduced field compaction to derive greater yield from a farm field. The grain cart includes a frame which supports a grain hopper and is supported by a plurality of wheels, some of which are steerable... | 12/03/2002 |
| 6484485 | Steering system for an articulated combine Broadly, one aspect of the present invention is an articulated combine having increased on-board grain storage capacity (e.g., 1,200 bushels) and which is composed of a forward unit having an operator's cab, an engine, a grain harvesting assembly, a grain... | 11/26/2002 |
| 6390228 | Hydraulic power steering apparatus for vehicle A hydraulic power steering apparatus for a vehicle is provided with a main control valve in which a valve opening degree is controlled on the basis of a relative movement between an input shaft interlocking with a steering wheel and an output shaft interl... | 05/21/2002 |
| 6345932 | System for alternately operating steering and offset mechanisms of compacting vehicle A control system for an industrial vehicle having an articulated frame with front and rear movably connected frame halves. The control system includes a steering mechanism disposed between the frame halves and is configured to pivot the rear frame half ab... | 02/12/2002 |
| 6283243 | Method for operating a vehicle steering system A way is provided to simulate the steering handle manual torques which correspond to a steering stop of the steered vehicle wheels for a vehicle steering system which can be operated in a normal mode and in an emergency mode. The steering system is capabl... | 09/04/2001 |
| 6266596 | Method and apparatus for controlling a mobile machine during start-up A method and apparatus for controlling a mobile machine during start-up. The mobile machine has a prime power source, a means for transport, and at least one auxiliary system; the means for transport and the at least one auxiliary system are controllably ... | 07/24/2001 |
| 6240711 | Method and system for steering an articulated combine Broadly, one aspect of the present invention is an articulated combine having increased on-board grain storage capacity (e.g., 1,200 bushels) and which is composed of a forward unit having an operator's cab, an engine, a grain harvesting assembly, a grain... | 06/05/2001 |
| 6167982 | Steering system for an articulated tracked combine One aspect of the present invention relates to a steering system for an articulated tracked combine composed of (i) a forward unit having a pair of differentially-connected powered non-steering wheels or tracks and (ii) a tracked rearward unit having powe... | 01/02/2001 |
| 6039133 | Steering control system for an articulating work machine having a steering fluid cylinder and a fluid-powered differential An articulating work machine, such as a scraper, wheel loader, or truck, is disclosed. The articulating work machine includes a fluid-powered differential and a pair of fluid-powered steering cylinders. The fluid-powered differential and the steering cyli... | 03/21/2000 |
| 5908081 | Steering control system for articulated vehicle A steering system for an articulated vehicle having both steerable axle or wagon-wheel and articulation steering. A steering system is provided which is responsive to the position and rate of change of position of the articulated body portions with respec... | 06/01/1999 |
| 5899292 | Hydraulic drive and steering systems for a vehicle Front and rear wheeled units (13, 14) of vehicle are connected together for articulated steering. Wheels on at least one unit are mounted for swivelling relative to the respective unit to provide kingpin steering in combination with articulation steering.... | 05/04/1999 |
| 5562175 | Steering system for a surface compacting machine The invention relates to a dual steering system for a tandem-type surface compacting machine equipped with two independent steering modes, for example, a machine equipped with both frame steering (3) and with individual steering (6) of one of the rollers ... | 10/08/1996 |
| 5529136 | Articulated machine with powered differential steering Articulated machines normally have a well known mechanical beveled gear arrangement for dividing power between the respective drive wheels and a differential lock that locks the two drive wheels when traveling in a straight direction. Likewise, articulate... | 06/25/1996 |
| 5308216 | Forwarder A forwarder has an elongate rigid chassis with a cab at a forward end, a load carrier on the chassis, and a crane serving the load carrier. Four wheels at the front are mounted as a pair on each side, each pair on a common yoke to form a bogie. The bogies... | 05/03/1994 |
| 5234069 | Steering control system for vehicles having dual steering A steering control system is provided in which one pair of wheels of an articulated steer vehicle are steered in synchronization with the articulation steering. This is accomplished by providing a first two-position valve for directing the fluid exhausted... | 08/10/1993 |
| 5174597 | Damping arrangement for the joint of an articulated omnibus An articulation damping device having a hydraulic piston-cylinder unit 2, connected pivotally at 5 to a front vehicle 3 at a distance y from the longitudinal median plane and on the other side and symmetrically thereto and also at the distance y from the ... | 12/29/1992 |
| 4890684 | Articulated vehicle with hinged joint An articulated vehicle including two wheeled sections hinged together in the middle of the vehicle by a universal movement joint enabling relative pivoting about three axes extending at right angles to each other through the center of the vehicle. A hydra... | 01/02/1990 |
| 4802545 | Steering control system for articulated vehicle A steering system for an articulated vehicle has pivotal wheel steering such as front axle wagon-wheel steering, a hydraulic actuator for pivoting the axle with respect to the vehicle, and a pair of hydraulic actuators for causing articulation of the vehi... | 02/07/1989 |
| 4771851 | Steering control system for articulated vehicle The present invention is a steering system for an articulated vehicle which has at least one axle mounted for wagon-wheel steering with respect to the vehicle, a hydraulic actuator for pivoting the axle with respect to the vehicle and a pair of hydraulic ... | 09/20/1988 |
| 4693331 | Tractor boom An elongated boom is pivotally mounted to the forward portion of a tractor and includes a pair of drive/steering wheels mounted to the forward end portion thereof. An electrically actuated, hydraulic control system provides for direction control and rotat... | 09/15/1987 |
| 4688818 | Method for regulating the bending stability of road vehicles A method for regulating the bending stability of road vehicles with at least two vehicle parts linked by an articulation as well as an articulation unit with an articulation operable by means of a hydraulic adjusting assembly and a hydraulic control mecha... | 08/25/1987 |
