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| Number | Title | Issue Date |
| 7677587 | Trailer and hitch mechanism for a robot A trailer and hitch system for a mobile robot. The trailer includes a front Ackerman steering linkage, a releasable locking mechanism for releasably positioning the Ackerman steering linkage in a turned position to arrest the trailer, a tow bar extending upwardly fr... | 03/16/2010 |
| 7363132 | Method and system for controlling steering deadband in a mobile machine Embodiments of the present invention recite a method and system for controlling steering dead band in a mobile machine. In one embodiment, a first dead band value for actuating a steering mechanism in a first direction is determined. Then, a second dead band value f... | 04/22/2008 |
| 7219913 | Articulated vehicle wheel tracking mechanism The invention provides a trailer for use as part of an articulated vehicle (15) with improved cornering characteristics. The trailer includes: a main chassis (18) connectable to a wheeled section (16) of the vehicle immediately ahead of the trai... | 05/22/2007 |
| 7147241 | Steering device for towed implements The present invention relates to a steering device for facilitating the steering of an implement towed by a work vehicle. The towed implement, for example, a farm implement such as a seeding device, comprises a main frame having front and rear ends and at least one ... | 12/12/2006 |
| 7143863 | Articulated harvester and method for converting a harvester and towed grain trailer into an articulated harvester An articulated harvester includes a powered harvester having a pair of forward wheels or tracks, having a pair of rotatable rearward caster wheels, and carrying an on-board harvester grain bin for housing harvested grain. The harvester tows a grain cart, which carri... | 12/05/2006 |
| 7134829 | Cargo trailer A trailer for carrying cargo includes a frame, at least two axles mounted to the frame, and a deck. The axles have wheels at opposite ends of the axles for movably supporting the frame above the ground. The deck is pivotally mounted to the frame and is pivotable abo... | 11/14/2006 |
| 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 |
| 6938699 | Variable angle powered work implement A walk-behind power unit is configured to detachably mount a variety of work implements to perform a corresponding variety of operations from a single power unit. The power unit includes an implement mounting mechanism that is pivotable about a generally vertical pi... | 09/06/2005 |
| 6431564 | Add-on self tracking axle for a vehicle The present invention is a self steering "add on" axle system for use with a vehicle such a dump truck in order to increase the legal weight capacity of the vehicle and provide effective steering in both the forward and reverse directions. The system comp... | 08/13/2002 |
| 6290248 | Universal dolly attachment device An improved trailer dolly having a fifth wheel and also carrying a ball-type trailer hitch to give the driver the option of towing either type of trailer and having steering means built into the dolly to provide sure and positive steering and control of t... | 09/18/2001 |
| 6131691 | System for guided steering of at least one set of wheels of a semi-trailer or a trailer The system for guided steering of a set of rear wheels of a semi-trailer comprises a pulling vehicle and a semi-trailer having rear wheels which are turnable with respect to a chassis of the trailer to turn from a neutral position to one or the other side... | 10/17/2000 |
| 5924716 | Method and apparatus for connecting a towed vehicle to a towing vehicle An apparatus (110) is provided for connecting a towed vehicle (111) to a towing vehicle that includes a support structure (216) with a self-steer axle system (290) connected to the support structure. The self-steer axle system has a reversible axle caster... | 07/20/1999 |
| 5630604 | Remotely-steered trailers A remotely-steered trailer, and a sensor for sensing the direction of motion of a vehicle towing the trailer. The sensor includes a source of varyng electrical potential, rigidly fastened to the trailer; a pointer in electrical contact with the source of ... | 05/20/1997 |
| 5607028 | All-wheel steering system A full-time all wheel steering system is provided whereby the rear wheel angle is determined by the front wheel angle and a relational curve, polynomial equation or set of tabulated values. The front wheel angle is measured and the desired rear wheel angl... | 03/04/1997 |
| 5417299 | All-wheel steering systems A full-time all wheel steering system is provided whereby the rear wheel angle is determined by the front wheel angle and a relational curve, polynomial equation or set of tabulated values. The front wheel angle is measured and the desired rear wheel angl... | 05/23/1995 |
| 5232238 | Remote steering of on-highway vehicles Motor vehicles in which steerable wheels aft of the front wheels are steered by the same steering wheel which steers the front wheels. In one aspect the present invention provides an extended motor vehicle thus steered, and in a second aspect a tractor-tr... | 08/03/1993 |
| 4824135 | Automatic self-steering trailer axle An automatic self-steering trailer axle wherein the wheel spindles are pivotally mounted upon the steering knuckle plate and may be pivoted in front of or behind the kingpin by means of a ratchet wheel which is engaged or disengaged by changing the direct... | 04/25/1989 |
| 4720119 | Steering system for a four-wheeled trailer A four-wheeled freight trailer adapted particularly to farm use has its front axle beam fixed with respect to the frame of the trailer, and has steerable wheels at the opposite ends of this beam. The tongue of the trailer is fixed with respect to the fram... | 01/19/1988 |
| 4463966 | Trailer towing and steering system A trailer steering hitch system for towing and trailer vehicles in which a tongue extends between the vehicles and in which a cable system extends along the tongue from a stationary elliptical pulley disposed beneath the towing vehicle to a rotating ellip... | 08/07/1984 |
| 4460194 | Towed vehicle with means for connection to fifth wheel of a towing vehicle A towed vehicle includes a frame, front and rear ground-engaged wheel assemblies mounted along said frame in such a manner that the center of gravity of said vehicle is situated between said front and rear wheel assemblies, and a gooseneck secured to said... | 07/17/1984 |
| 4451058 | Transport converter dolly with forced steering The invention provides a transport converter dolly for use as the front wheels of a trailer towed by another vehicle, when it is required to provide a substantial spacing between the vehicle and the trailer so as to meet axle loading requirements of the r... | 05/29/1984 |
| 4449726 | Control for follow-up steering axles A control arrangement for a follow-up steering axle in single- or multiple-unit vehicles with at least three axles. The follow-up steering axle may be stabilized in dependence upon a load of the vehicle in a direction toward a straight-ahead driving posit... | 05/22/1984 |
| 4405147 | Trailer steering device for spaced axle trailer A steering device for steering a spaced axle trailer includes a pair of pivots connecting a tongue to a frame of the trailer. The steering device includes a primary arm pivotally connected to the trailer frame. The primary arm is coupled to pivotal spindl... | 09/20/1983 |
| 4345775 | Automatic steering system for a towed vehicle An automatic steering system for a towed vehicle, or trailer, wherein the wheels of the trailer are steered while backing by means of a lockable, in length, rod extending longitudinally from a towing vehicle, the rod being positioned to the side of a towi... | 08/24/1982 |
| 4304086 | Lawn mower attachment for small tractors An independently powered mowing attachment for small or medium sized lawn and garden tractors of the low profile type having a rotary mower mounted on the underside of the tractor frame. The attachment has spaced mower assemblies that cut swaths on both s... | 12/08/1981 |
| 4192525 | Steering sulky for two-wheel tractors A two-wheel tractor is provided with an improved type of steerable two-wheel trailer having a steering mechanism which enables an operator of the tractor seated in the trailer to bring about turning movement of the tractor-trailer assembly in a natural an... | 03/11/1980 |
| 4171825 | Steerable towing device A steerable towing device having at least two wheels, a frame, a tongue having at one end a socket adapted for connection to a first ball on a towing means and having the other end connected to said frame, at least two axially aligned wheels, a steering a... | 10/23/1979 |
