A roll off trailer having a stepped out neck is provided. The trailer frame may be formed largely of an aluminum alloy or other metal.

This invention is directed toward a self-contained heated portable vacuum slurry box which is manufactured from steel rated for cold temperatures. The slurry box generally includes a vacuum tank, a structure attached to the tank, a mechanical bay containing a power unit, and a tailgate, a The invention herein utilizes a selection of steel that allows for a vacuum slurry box to function in the cold environmental conditions.

Methods and systems are provided for loading and unloading an item onto a vehicle. In one embodiment, a system includes: a loading system configured to receive a locker configured to store the item; a shuttle transfer system configured to transfer the locker to a storage position within the vehicle; and a swing arm system that couples to the loading system and the shuttle transfer system, the swing arm system configured to adjust a position of the loading system relative to the vehicle.

A transportable slurry box includes a structure comprising an interior to contain a cuttings slurry; a door movable between a closed position and an open position to provide access to the interior of the structure, wherein the door is located within a top surface of the transportable slurry box; a mechanical bay in the structure; and a heating unit removably mounted within the mechanical bay of the transportable slurry box for heating the cuttings slurry within the interior.

A cargo hauler for hauling cargo that includes a rack assembly with a stationary frame and a tilting frame pivotally connected to the stationary frame, a rail assembly detachably connected to and extending rearwardly from the tilting frame, a carriage assembly including a carriage frame configured for supporting the cargo, and an actuating mechanism. The actuating mechanism is configured for tilting the tilting frame relative to the stationary frame, and for towing the carriage assembly from the ground over the rail assembly and onto to the tilting frame, and for lowering the carriage assembly from the tilting frame over the rail assembly and onto the ground.

A rapid loading sled for use during the transportation of wheeled vehicles via trailer or truck. The sled includes a body with a frame and deck that provide a low profile surface for loading and securing a wheeled vehicle to before the sled is loaded on a trailer or truck for transportation. The sled includes a sliding assembly to improve maneuverability during loading and a winch system for guiding the retractable cable of a winch during operation.

Provided in this disclosure is a hoist for raising and mounting an interchangeable vehicle body onto a vehicle chassis. The hoist includes a hoist frame having a pivot end and an elevated end for slidably supporting the interchangeable body. A subframe with a bolt-on assembly is provided for fixedly connecting to the vehicle chassis. A linkage connects the hoist frame to the subframe. The linkage also includes a hinge joint member for raising the elevated end of the hoist frame. A mounting bracket pivotally connects to the pivot end of the hoist frame. The mounting bracket has a bolt-on assembly for fixedly connecting to the vehicle chassis. A winch assembly is retained in the elevated end of the hoist frame and extending to the pivot end for raising the interchangeable body onto the hoist frame.

A self-contained heated portable vacuum slurry box which is constructed to hold both a positive pressure and a vacuum pressure. The slurry box generally includes a vacuum tank, a structure attached to the tank, a vertical tailgate, and a hook for pulling the slurry box onto a vehicle. The slurry box meets space restriction requirements while functioning within the environmental conditions of winter and summer seasons.

A tailgate assembly includes a tailgate hinge that is operable to attach a tailgate to a vacuum tank such that the tailgate is movable between an open position and a closed position, the vacuum tank operable to withstand vacuum pressure when the tailgate is in the closed position. A tailgate warming tube loop is operable to circulate a heated fluid through the tailgate, the tailgate warming tube loop attached to an interior surface of the tailgate and a first rear pipe flange that includes a first rear pipe flange warming channel in communication with the tailgate warming tube loop.

Provided in this disclosure is a hoist for raising and mounting an interchangeable vehicle body onto a vehicle chassis. The hoist includes a hoist frame having a pivot end and an elevated end for slidably supporting the interchangeable body. A subframe with a bolt-on assembly is provided for fixedly connecting to the vehicle chassis. A linkage connects the hoist frame to the subframe. The linkage also includes a hinge joint member for raising the elevated end of the hoist frame. A hinge assembly pivotally connects to the pivot end of the hoist frame. The hinge assembly has a bolt-on mounting bracket for fixedly connecting to the vehicle chassis. A winch assembly is retained in the elevated end of the hoist frame and extending beyond the pivot end for raising the interchangeable body onto the hoist frame.