This present disclosure describes an automatically sealing tailgate mechanism for the transport of fluidic materials in vessels such as roll off containers and truck bodies. Currently, preventing material leakage from such vessels is ensured using manually operated locks, which put operating personnel of such vessels at risk. The automatic vessel locking system disclosed does not require manual operating intervention other than actions taken to perform a dumping operation.

In a dump truck of the type having a frame mounted on ground wheels, a dump box having a floor, two side walls, a front wall at a front end and an open rear end with a tail gate where the dump box is supported on the frame for movement between a lowered position for storing and transporting materials and a raised position where the front end is elevated for dumping the materials out of the open rear of the dump box under gravity, the side walls are tapered so that a spacing at the front end is less than a spacing at the rear end so that the materials as they slide forwardly come away from the side walls to reduce pressure on the side walls and aid the sliding.

Methods and systems for adjusting a position of a tailgate of a vehicle. The system includes a cable connecting the tailgate to a spool configured to turn in a first direction to wind the cable, and turn in a second direction to unwind the cable. The system includes a cable release located between the spool and the tailgate, the cable release, when in the unengaged state, allowing the cable to move through the cable release when the spool turns in the first direction, and preventing movement of the cable through the cable release when force is applied to the cable from the tailgate, and the cable release, when in the engaged state, allowing the cable to move through the cable release when the spool turns in the second direction. The system includes a button configured to toggle the cable release between the engaged state and the unengaged state.

Methods and systems for adjusting a position of a tailgate of a vehicle. The system includes a cable connecting the tailgate to a spool configured to turn in a first direction to wind the cable, and turn in a second direction to unwind the cable. The system includes a cable release located between the spool and the tailgate, the cable release, when in the unengaged state, allowing the cable to move through the cable release when the spool turns in the first direction, and preventing movement of the cable through the cable release when force is applied to the cable from the tailgate, and the cable release, when in the engaged state, allowing the cable to move through the cable release when the spool turns in the second direction. The system includes a button configured to toggle the cable release between the engaged state and the unengaged state.

A modular gate combined with multiple functions which can be easily employed with existing tailgates without any hardware or mounting modifications to existing truck beds. There is provided a modular tailgate system having a tailgate portion in combination with a plurality of functions. The modular tailgate system integrates any combinations of at least two of the plurality of features without affecting existing body sides and/or existing truck beds. Integrated features include a multi-functional gate (e.g., swing, drop, etc), storage (e.g., normal, sealed, refrigerated, heated, etc), step(s), lighting (e.g., ingress/egress, bed interior, removable, trailer hitch, parking, etc), bed extension(s), power (e.g., 12v and/or 110v), tie downs (e.g., ratchets, anchors, etc), sawhorse, magnet(s), table(s), bench(es), seat(s), net(s), any other predetermined desired function, etc., and combinations thereof.

A dump body for a truck has rear left and right pillars, a tailgate pivotally connected to the pillars, left and right upper rails connected to the rear left and right pillars at their rear ends, a front wall connected to the front ends of the upper rails, a left side wall connected to the front wall, the left upper rail and the rear left pillar, a right side wall connected to the front wall, the right upper rail and the rear right pillar, a floor connected to the front wall, the rear pillars, and the lower ends of the side walls, and front and rear support assemblies connected to an underside of front and rear portions of the floor. A majority of an underside portion of the floor located longitudinally between the support assemblies is free of structural support members. A truck having the dump body is also disclosed.

A container for transporting material including a main body and a liner disposed within the interior space of the main body. A gap is provided between a perimeter of the main body and a perimeter of the liner to allow the liner to move with respect to the main body. Also, a container for transporting material including a main body defining an interior space with a lift gate pivotably attached at an open end of the main body. When the container is placed on a transportation vehicle and the main body is raised, the engagement of a link between the lift gate and the vehicle automatically transitions the lift gate from a position in which the open end of the main body is covered by the lift gate to a position in which the open end of the main body is not covered by the lift gate.

A container for transporting material including a main body and a liner disposed within the interior space of the main body. A gap is provided between a perimeter of the main body and a perimeter of the liner to allow the liner to move with respect to the main body. Also, a container for transporting material including a main body defining an interior space with a lift gate pivotably attached at an open end of the main body. When the container is placed on a transportation vehicle and the main body is raised, the engagement of a link between the lift gate and the vehicle automatically transitions the lift gate from a position in which the open end of the main body is covered by the lift gate to a position in which the open end of the main body is not covered by the lift gate.

A tailgate lifting apparatus is provided that includes: a first cog, a second cog, and a housing fixedly attached to a dump body. Preferably, the first cog is fixedly attached to a lower hinge pin of the tailgate, the second cog is rotatably coupled to the housing, and the second cog meshes with the first cog. The housing includes a ratcheting mechanism that selectively engages the second cog, the device therewith operable therewith to maintain the tailgate in a plurality of positions between a fully opened and fully closed positions.

Retention system for a load carrying container, comprising a retention portion arrangeable at or near a rear end of a load carrying container. The retention portion is pivotable between a first, raised position and a second, lowered position; and a drive element is used for moving the pivotable retention portion between the first and second positions.