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| Number | Title | Issue Date |
| 7699334 | Fifth wheel slide rail A slide rail assembly for a fifth wheel hitch assembly is disclosed that includes an angle member for directly mounting the assembly to a truck frame member, and a t-shaped slide rail attached to a horizontal portion of the angle member, the t-shaped slide rail incl... | 04/20/2010 |
| 7404466 | Locking pin locator A compact, portable locking pin locator device adapted to assist the driver of a semi truck including a tractor and a trailer to locate the trailer over the tandem axle under the back end of the trailer to achieve proper weight and balance of the load carried in the... | 07/29/2008 |
| 7325822 | Trailer tandem release handle tool This invention is a multi-functional tool designed to stop injury, save time, and minimize aggravation to truck drivers when sliding trailer tandems and or releasing fifth wheel devices The device can be used as an extension handle facilitating the safe manual pulli... | 02/05/2008 |
| 7287947 | Front loading trailer and method of use A trailer for hauling heavy equipment includes front end loading assembly that allows hitching and loading, a trailer bed, and a set of rear wheels. Longitudinally aligned support beams from the trailer bed, ends terminating at the front end loading assembly. The fr... | 10/30/2007 |
| 7261177 | Pneumatic locking pin operating system for a trailer slider A locking pin system is operated through an air spring which rotates a torque tube to remove a spring bias from a multiple of locking pins. Operation of the locking pin system is controlled by a trailer spring brake valve which operates in response to actuation of t... | 08/28/2007 |
| 7229098 | Frame rail torsion attenuator The present invention provides a torsion attenuator for a vehicle frame having first and second longitudinal frame rails extending substantially parallel to a longitudinal axis. A torsion attenuator in accordance with one embodiment of the present invention includes... | 06/12/2007 |
| 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 |
| 7171289 | Trailer tandem adjustment indication apparatus An alignment indication apparatus is provided that indicates whether a selected position of a first portion of a trailer is aligned with a selected position of a second portion of the trailer. The first and second portions are adjustably moveable relative to one ano... | 01/30/2007 |
| 7165777 | Front suspension A suspension for coupling a steer axle assembly to a vehicle frame is provided that moves one or more of the spring reaction points outboard to increase roll stiffness and enable the use of a lighter axle. In one embodiment of the invention, the suspension includes ... | 01/23/2007 |
| 7126458 | Sliding axle alarm An alarm system that indicates to an operator the status of locking pins of a vehicle sliding axle assembly. The alarm system includes an alarm valve coupled to the locking pins and in fluid communication with an alarm. When the pins are unlocked from a vehicle comp... | 10/24/2006 |
| 7108274 | Carrier assembly for movably supporting a fifth wheel assembly A carrier assembly is mounted on the spaced frame members of a tractor for movably supporting a fifth wheel assembly thereon. An integral one piece slide rail is secured to each of the frame members and has a plurality of individual rack sections separately welded t... | 09/19/2006 |
| 7097192 | Trailer slider locking pin interlock with parking brake A slider locking pin control receives feedback of the actual position of the locking pins. If the locking pins are not engaged in the trailer frame rails, then the interlock valve will vent air to release a parking brake. Once the locking pins are engaged, the inter... | 08/29/2006 |
| 7072763 | Intelligent load distribution system A vehicle information system has a first load sensor for generating a first load signal based on a first vehicle load. A first position sensor generates a first position signal based on a position of a vehicle axle. A second position sensor generates a second positi... | 07/04/2006 |
| 7044250 | Detachable suspension mounting A detachable suspension mounting includes a pair of plates each having an upper surface and a lower surface. The upper surface of a first of the plates is fixedly coupled to a bottom side of the trailer. A plurality of securing members selectively secures a second p... | 05/16/2006 |
| 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 |
| 6997468 | Control rod suspension with outboard shock A control rod suspension has at least one dampening structure having an outboard end and an inboard end. The inboard end is pivotally mounted to the vehicle frame. The outboard end is pivotally mounted to a king pin. A king pin rotatably connects the knuckle with a ... | 02/14/2006 |
| 6962473 | Apparatus for transferring containers and flat racks from a truck to a trailer A system for loading cargo containers and flat racks off of a truck having a hook lift system onto a trailer and from the trailer back onto the truck comprising a carriage that is moveable along a track system that runs the length of the trailer. The carriage includ... | 11/08/2005 |
| 6921100 | Axle weight distribution system The present invention relates to a system for adjusting weight distribution throughout all axle groups of the truck and trailer. The trailer has at least one axle group mounted on a pair of rails attached to the frame of the trailer. These axle groups are locked in ... | 07/26/2005 |
| 6793233 | Trailer slider pin control system A trailer slider pin control system is provided including a vehicle body and a rail supported along the body. The rails are moveable between a plurality of positions defined by a plurality of holes in the rail. A pin assembly is supported on the vehicle body and inc... | 09/21/2004 |
| 6641157 | Method for securing slider to trailer A system for connecting a slider to a trailer frame includes a rotatable locking member having a plurality of teeth that engage with a plurality of openings in the trailer from. The locking member is biased by a rotary biasing in a locked position.... | 11/04/2003 |
| 6488303 | Collapsible suspension slider pin An improved suspension system includes a plurality of slider pins which are biased radially outwardly into engagement with openings in the suspension rails of the suspension system and the mating openings in the slider rail. The slider pins are provided w... | 12/03/2002 |
| 6471227 | Method for securing slider to trailer A number of improved ways of connecting a slider to a trailer frame are disclosed. In one general type of solution, a wedge-shaped locking surface is formed on both the slider and the trailer. The wedged surfaces provide a very secure connection. In anoth... | 10/29/2002 |
| 6435536 | Operating system for locking pins for sliding undercarriages A operating system for slider locking pins includes an air compressor connected to an air supply tank. An air pressure protection valve is connected to the air tank to protect the brake system of the trailer. A flipper valve is connected to the air pressu... | 08/20/2002 |
| 6409192 | Slider pin release mechanism for a semi-trailer A slider pin release mechanism for a slider suspension system of a semi-trailer which includes a trailer body and a slider suspension which is movable longitudinally forwardly and rearwardly relative to the trailer body. Locking pins carried on the slider... | 06/25/2002 |
| 6398250 | Trailer hitch An extension coupling for releasably interconnecting a trailer to a fifth wheel tow hitch. This extension coupling includes a mount that is secured to the trailer, and an elongated arm that is pivotally secured to the mount and one end. A universal joint ... | 06/04/2002 |
| 6384716 | Trailer slider repositioning alarm A suspension repositioning system for a trailer is provided that includes a trailer frame having spaced apart rails with a plurality of sets of holes in the rails. A suspension unit is movable relative to the frame along the rails. The suspension unit has... | 05/07/2002 |
| 6345832 | Axle adjustment apparatus An apertured track and brace system for mounting a slider for adjusting the weight distribution of a semi-trailer. The apertured track is adapted to be mounted to both a semi trailer and to a carriage carrying a rear axle tandem, while a single type of br... | 02/12/2002 |
| 6322091 | Pin retractor operator A pin retractor operator is provided for use on a trailer having a movable bogie secured to the trailer frame with pins which are retractable by pulling on a handle of a pin retractor. The pin retractor operator includes a case for engaging the bogie, a h... | 11/27/2001 |
| 6279933 | Locking mechanism for movable subframe of semi-trailers A locking mechanism for a movable subframe of a semi-trailer includes at least a pair of transversely spaced pins. Each pin is extendable into and retractable from an opening formed in its respective longitudinally extending main member of the subframe an... | 08/28/2001 |
| 6240339 | Vehicle rear axle load relief method and system A method and apparatus involves selectively relieving the load from the rearmost wheels of a trailer to shorten the effective wheel base of the trailer. When the effective wheel base is shortened, off-tracking of the trailer during turning is reduced. The... | 05/29/2001 |
| 6231064 | Automotive transport tractors, semi-trailers, trailers and combinations thereof The invention provides a new automotive tractor unit for use with a new semi-trailer unit to form a rigidly-coupled tractor/semi-trailer combination. The tractor has a long wheel base and has its fifth wheel assembly mounted for extended longitudinal move... | 05/15/2001 |
| 6213489 | Operating system for locking pins for sliding undercarriages A operating system for slider locking pins includes an air compressor connected to an air supply tank. An air pressure protection valve is connected to the air tank to protect the brake system of the trailer. A flipper valve is connected to the air pressu... | 04/10/2001 |
| 6203045 | System for automatically controlling weight distribution among truck axles A control system and method provides automatic adjustments in a heavy duty vehicle that effectively redistributes the weight among the various wheel axles. A plurality of sensors are associated with the plurality of wheel axles on the vehicle. An electron... | 03/20/2001 |
| 6120051 | Apparatus for the transportation of trucks Two vehicles are transported in tandem by a beam assembly connecting a lead vehicle to a trailing vehicle which is reversed end-for-end. The beam assembly includes an elongated beam which is connected to the rear and extends lengthwise of the trailing veh... | 09/19/2000 |
| 6036207 | Slide axle trailer A trailer including a longitudinally extending frame comprised of longitudinally extending frame members having rearward and forward ends. Each of the frame members has a first section modulus which is positioned forwardly of the rearward end thereof, at ... | 03/14/2000 |
| 5863057 | Semitrailer load balancing system A system for adjusting a sliding undercarriage along a length of a semitrailer and adjusting a sliding fifth wheel along a length of a tractor. The tractor used for pulling the semitrailer. The system is used for balancing a load on the semitrailer, adjus... | 01/26/1999 |
| 5860668 | Semitrailer having an extendible dolly A convertible chassis for a dual axle semitrailer for converting the semitrailer to a single axle trailer having an attached dolly to pull a second trailer thereon.... | 01/19/1999 |
| 5833253 | Locking mechanism for movable subframe of tractor-trailers A movable subframe for tractor-trailers, commonly referred to as a slider, includes an improved retractable pin mechanism for locking the movable subframe in a selected position relative to the tractor-trailer body. A manually operated handle is used to p... | 11/10/1998 |
| 5797615 | Heavy equipment trailer with adjustable tower Heavy equipment trailer having a main deck with a rear gooseneck which is connected to a turntable mounted on a lifting tower carried by a dolly positioned to the rear of the deck. The lifting tower is mounted in a box which is suspended between the side ... | 08/25/1998 |
| 5785341 | Pneumatic isolator stabilizing assembly A novel pneumatic isolator stabilizing assembly is provided for use with a tow vehicle and a trailer for improving ride characteristics for a driver and passengers and for minimizing the possibility of damage to the tow vehicle and the trailer. The assemb... | 07/28/1998 |
