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| Number | Title | Issue Date |
| 7866680 | Steering lock indicator for self-steering axle A land vehicle includes a wheeled axle that is operable to be selectively self-steering. The axle includes a ground wheel that is operable to be selectively locked into a straight-ahead position so that self-steering is restricted. The land vehicle also includes a w... | 01/11/2011 |
| 7810823 | Oscillating steering system for an agricultural implement An oscillating in-line steering system for a pulled agricultural implement includes first and second in-line axles pivotably coupled with a frame. The system also includes at least first and second in-line wheel arrangements pivotably coupled with the first and seco... | 10/12/2010 |
| 7398981 | Auxiliary axle system for concrete pump truck A concrete pumping truck having a forward end and a rear end with a hopper attached at the rear end of the concrete pumping truck comprises an auxiliary axle system pivotally attached to the rear end of the truck adjacent the hopper, the auxiliary axle system compri... | 07/15/2008 |
| 7334806 | Torque reaction control link A suspension system for a motor vehicle comprising a chassis, a rigid drive axle, an opposite axle and road wheels attached to the ends of each axle, a torque reaction control link positioned longitudinally of the motor vehicle with longitudinal control arms pivotal... | 02/26/2008 |
| 7322587 | Steerable and liftable independent suspension system A liftable independent suspension system which may also be steerable. In a described embodiment, a liftable suspension system for use on a vehicle includes wheel spindles positioned to extend outwardly at each respective lateral side of the vehicle. The spindles are... | 01/29/2008 |
| 7281721 | Suspension system for dump truck/paver truck hitch A suspension system for a dump truck which is to be connected to a paver using a truck hitch. In one example, a system for connecting a dump truck to a paver includes a liftable and steerable suspension of the truck, the suspension having an adapter with a laterally... | 10/16/2007 |
| 7273217 | Reverse caster platform A reverse caster suspension apparatus includes a tiltable platform assembly that is interposed between a sprung axle assembly and a vehicle structure. This arrangement provides an efficient means for changing the caster angle without harmful distortion of springs, a... | 09/25/2007 |
| 7267348 | Vehicular suspension systems A vehicular suspension system has a hanger to attach beneath a vehicle, a rocker pivoted at a first end to the hanger and attached proximate a second end to an axle, a shock absorber extending between the hanger and an intermediate position on the rocker, as well as... | 09/11/2007 |
| 7234713 | Axle suspension system An axle suspension system for a load-bearing vehicle is described which comprises first and second mounting brackets secured to the longitudinally extending frame members of the vehicle. First and second lower control arms are pivotally secured at their forward ends... | 06/26/2007 |
| 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 |
| 7213824 | Suspension system for a transport vehicle A suspension system for a multi-axle transport vehicle for moving heavy loads includes two fluid activated cylinders and two spaced apart arms for each wheel and axle set which allow the transport vehicle to be raised and lowered with respect to the roadway. The sus... | 05/08/2007 |
| 7195258 | Mobile thick matter pump comprising a support construction and a pneumatic air-cushioned wheel axle A mobile viscous matter pump comprising a hydraulically operated support construction, a distribution boom (16) and a pneumatic cushioned trailing axle (42). To ensure stability during the pump operation, the trailing axle (42) can be lifted by ... | 03/27/2007 |
| 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 |
| 7108272 | Trailer hitch cushioning device and method for using same The present invention includes a base frame or hitch receiver which can be attached to the under surface of a pulling vehicle. A hitch frame is pivotally mounted to the base frame for pivotal movement about a horizontal axis. An air bag is positioned between the bas... | 09/19/2006 |
| 7017941 | Walking beam assembly A walking beam assembly includes a pair of axles in parallel spaced relation. At least one of the pair of axles being a drop axles having end portions and an intermediate portion that extends between the end portions. The intermediate portion drops down and has a se... | 03/28/2006 |
| 6932173 | Steered vehicle The steered vehicle, which may be a road vehicle or a vehicle devised to be usable upon road surfaces and also upon a rail line, has road wheels or a combination of road and rail wheels as required. The wheels are mounted upon a bogie pivoted about a generally verti... | 08/23/2005 |
| 6450285 | Steering device A steering device for steering the wheels of a steering axle of a motor vehicle having at least three axles. The steering axle is designed as a trailing or leading axle, with a hydraulic arrangement which has an actuating assembly for the steering actuati... | 09/17/2002 |
| 6439586 | Spring band for an axle assembly A self-steering auxiliary axle assembly having an elastic member for use as a steering damper is provided. The axle assembly has a frame with an axle supported by the frame in spaced relation therefrom with retracted and highway positions. At least one ai... | 08/27/2002 |
| 6375203 | Front air spring suspension with leading arm trailing and V-link A suspension system for a vehicle frame from a steering axle has first and second controllable rate springs mounted above the steering axle and below the frame to support a portion of vehicle weight. A trailing V-link member is mounted to pivot on its ver... | 04/23/2002 |
| 6247196 | Bogie construction A bogie construction includes at least two stiff axles interconnected by a rocking lever. The rocking lever is pivoted in its middle so that it can move in its longitudinal direction as a result of steering movements. The rocking lever is preferably conne... | 06/19/2001 |
| 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 |
| 6062578 | Trailing arm suspension The invention is a trailing arm suspension with a steerable axle assembly having a caster angle controlling the direction at which the axle steers. A lift axle suspension or a lockout device is provided to lift the wheels from a ground engaging position o... | 05/16/2000 |
| 6007078 | Self-steering, caster adjustable suspension system A self-steering axle suspension system of the parallelogram type is provided with a tri-pivot cradle mechanism for changing the caster of the axle to provide for either a reverse or forward steerable axle mode while equalizing the forces on the pivots in ... | 12/28/1999 |
| 5816605 | Tandem axle suspension with self-steering rear axle A tandem axle vehicle suspension system which includes a rear axle mount that is automatically moveable between a forward caster and rearward caster position of the axle mount relative to the suspension system to cause self-steering of the rearward axle w... | 10/06/1998 |
| 5785330 | Trailer support wheel assembly A trailer support wheel assembly having a wishbone frame pivotally connected to the trailer frame at two rear mounting points and adjustably connected to the trailer frame at a single forward point. A resilient suspension assembly and spindle is contained... | 07/28/1998 |
| 5743562 | Simulator for teaching vehicle speed control and skid recovery An apparatus with a tire that is capable of castering 360 degrees replaces the rear wheels of a front wheel powered automotive vehicle to give drivers an educational experience that simulates the effects excessive speed has upon entry into curves and turn... | 04/28/1998 |
| 5620194 | Self-steering suspension lockout mechanism A lockout mechanism for a self-steering axle suspension system is provided by using the internal fluid reservoir and piston of a shock absorber normally used to dampen oscillations of the wheels in such a suspension, by employing a selectively actuatable ... | 04/15/1997 |
| 5526895 | Rear wheel self-steering system for vehicle The present invention relates a rear wheel self-steering system for a vehicle which can minimize a turning radius of a vehicle and a tire wear by independently steering the rear wheel during cornering. The system includes a side frame, a first spring moun... | 06/18/1996 |
| 5492351 | Axle construction for a vehicle An axle construction for a vehicle has a rigid axle and wheels mounted at opposite ends of the rigid axle. Supports respectively at the opposite ends of the rigid axle respectively support opposite sides of a chassis frame of the vehicle from the rigid ax... | 02/20/1996 |
| 5477937 | Steerable trailer The present invention relates to steering arrangements for trailers and particularly to a four wheel dolly system wherein a pair of wheels on one side of the dolly can move vertically with respect to each other to maintain constant ground contact even whi... | 12/26/1995 |
| 5364113 | Self-steering axle for vehicles A self steering axle system for motor coaches and similar commercial vehicles having a truss which hingedly supports an axle beam for pivotal movement between a normal positive caster angle and a negative caster angle when the vehicle is driven in reverse... | 11/15/1994 |
| 5322328 | Suspension system for heavy-duty vehicles A suspension system for a cart having a pair of longitudinally aligned, oscillating wheel support units pivotally mounted fore and aft within a frame assembly on each side of the cart, a pair of longitudinally aligned wheels mounted on each support unit, ... | 06/21/1994 |
| 5269546 | Self-steering assembly A self-steering assembly for self-steering wheels used on trucks carrying heavy loads includes a kingpin arm unit with a unitary adaptor collar at one end for mounting on a conventional tubular axle and a knuckle at the other end for retaining the clevis ... | 12/14/1993 |
| 5255754 | Axle construction for a commercial vehicle An axle or boggie construction for a commercial vehicle has a triangular support (4) and an axle (1) made turnable by means of positionally adjustable longitudinal supports (16, 17). To stabilize the operation of the turninq axle (1), the springs (5, 6) o... | 10/26/1993 |
| 5246242 | Passively steered tandem axle group A steering system for steering a vehicle, including a subframe disposed at the rear end of the vehicle for supporting the vehicle, the subframe being pivotably connected to the vehicle, a pair of axles attached in tandem to the subframe, the axles having ... | 09/21/1993 |
| 5220972 | Self-tracking, rear vehicle suspension system for trucks, trailers & buses Apparatus and method of providing self-tracking rear axles on non-articulated vehicles having more than one rear axle. In existing suspension systems employing torque rods which lie substantially parallel to the longitudinal center-line of the vehicle, th... | 06/22/1993 |
| 5207443 | Multiple axle trailers A multiple axle trailer comprises a chassis pivotally connected to turn substantially horizontally with respect to a sub-chassis and provided with means at its forward end to enable the trailer to be hitched to a towing vehicle, the sub-chassis carrying f... | 05/04/1993 |
| 5183283 | Apparatus for limiting lateral movement in trailers A device for controlling lateral forces acting on trailers' non-drive axles by utilizing two slewing brackets mounted with one on each side of the trailer chassis so as to control the non-driving axle of a trailer and cause that axle to move in the same d... | 02/02/1993 |
| 5127663 | Tandem trailer truck for transporting elongate objects A truck-trailer-trailer combination including an intermediate trailer that has two load carrying bunk assemblies. The intermediate trailer carries the rearward end of a first set of elongate objects and the forward end of a second set of elongate objects.... | 07/07/1992 |