Abstract: A structurally supportive belly pad is connected to a rounded trailer and configured to support the same near the rear end of the trailer. The belly pad may be arcuately curved complementary to the curvature of the rounded trailer. However, if the belly pad were laid flat, it includes a pair of parallel legs aligned in a generally longitudinal direction with a plurality of transverse ribs extending therebetween. The shape of the belly pad is configured to provide structural support for the trailer which is beneficial especially when the trailer is raised and lowered, typically through hydraulic mechanisms.

Abstract: The current disclosure relates to a hopper trailer. The current disclosure is directed to a hopper trailer having an upper portion, a lower portion, and an offset rib, wherein the offset rib is fixedly attached on an upper surface of the upper portion of the hopper trailer. The lower portion comprises a plurality of hopper tanks, wherein an lower rib is placed between two adjacent hopper tanks. The offset rib on the upper portion of the hopper trailer is offset from the lower rib on the hopper tanks.

Abstract: A roll off trailer includes first and second trolley assemblies and a hoisting cable connected at one end to the first trolley assemble and extending about a sheave in each of the first and second trolley assemblies. The cable connects to a container. The second trolley is displaced t in a first direction while simultaneously drawing the container via the cable from the first grounded container to a second container position generally midway atop the trailer. Then, the first trolley is displaced in a second direction while simultaneously drawing the container via the cable from the second container position to a third container position generally adjacent the front of the trailer.

Abstract: A tank trailer may include a plurality of hoppers and a tension bar assembly extending between the hoppers.

Abstract: A roll off trailer includes first and second trolley assemblies and a hoisting cable connected at one end to the first trolley assemble and extending about a sheave in each of the first and second trolley assemblies. The cable connects to a container. The second trolley is displaced in a first direction while simultaneously drawing the container via the cable from the first grounded container position to a second container position generally midway atop the trailer. Then, the first trolley is displaced in a second direction while simultaneously drawing the container via the cable from the second container position to a third container position generally adjacent the front of the trailer.

Abstract: A tank trailer may include a plurality of hoppers and a tension bar assembly extending between the hoppers.

Abstract: A structurally supportive belly pad is connected to a rounded trailer and configured to support the same near the rear end of the trailer. The belly pad may be arcuately curved complementary to the curvature of the rounded trailer. However, if the belly pad were laid flat, it includes a pair of parallel legs aligned in a generally longitudinal direction with a plurality of transverse ribs extending therebetween. The shape of the belly pad is configured to provide structural support for the trailer which is beneficial especially when the trailer is raised and lowered, typically through hydraulic mechanisms.

Abstract: An air fairing device is connected below the bottom a frameless trailer to improve aerodynamic efficiency and improve fuel economy. One embodiment of the air fairing device provides an air deflector positioned forward of a trolley which supports the frameless trailer at a rear end. A second embodiment of the air fairing device provides two deflectors mounted below the frameless trailer. The first deflector is attached and extends downward from an articulating arm, said arm connecting the trailer to a semi-tractor or truck. The second deflector connected to below the bottom of the frameless trailer and positioned rear of the first deflector and forward of the trolley. A third embodiment is similar to the second but further includes a third deflector positioned between two axles of the trolley.

Abstract: A roll off trailer is provided with a bumper assembly which may move between a deployed position and a collapsed position. The roll off trailer may include a trailer frame with a table top pivotally connected to the trailer such that the deployed position may be associated with a home position of the table top and the collapsed position may be associated with a tilted roll off position of the table top.

Abstract: A tank trailer may include a hopper, an end housing forward or rearward of the hopper, and a slide plate inside the end housing. The slide plate may be configured to help prevent breakage along welds which secure the slide plate.

Abstract: An air fairing device is connected below the bottom a frameless trailer to improve aerodynamic efficiency and improve fuel economy. One embodiment of the air fairing device provides an air deflector positioned forward of a trolley which supports the frameless trailer at a rear end. A second embodiment of the air fairing device provides two deflectors mounted below the frameless trailer. The first deflector is attached and extends downward from an articulating arm, said arm connecting the trailer to a semi-tractor or truck. The second deflector connected to below the bottom of the frameless trailer and positioned rear of the first deflector and forward of the trolley. A third embodiment is similar to the second but further includes a third deflector positioned between two axles of the trolley.

Abstract: 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.

Abstract: A tank trailer may include a hopper, an end housing forward or rearward of the hopper, and a slide plate inside the end housing. The slide plate may be configured to help prevent breakage along welds which secure the slide plate.

Abstract: A tank trailer may include a plurality of hoppers and a tension bar assembly extending between the hoppers.

Abstract: An air fairing device is connected below the bottom a frameless trailer to improve aerodynamic efficiency and improve fuel economy. One embodiment of the air fairing device provides an air deflector positioned forward of a trolley which supports the frameless trailer at a rear end. A second embodiment of the air fairing device provides two deflectors mounted below the frameless trailer. The first deflector is attached and extends downward from an articulating arm, said arm connecting the trailer to a semi-tractor or truck. The second deflector connected to below the bottom of the frameless trailer and positioned rear of the first deflector and forward of the trolley. A third embodiment is similar to the second but further includes a third deflector positioned between two axles of the trolley.

Abstract: A roll off trailer is provided with a bumper assembly which may move between a deployed position and a collapsed position. The roll off trailer may include a trailer frame with a table top pivotally connected to the trailer such that the deployed position may be associated with a home position of the table top and the collapsed position may be associated with a tilted roll off position of the table top.

Abstract: A roll off trailer is provided with a bumper assembly which may move between a deployed position and a collapsed position. The roll off trailer may include a trailer frame with a table top pivotally connected to the trailer such that the deployed position may be associated with a home position of the table top and the collapsed position may be associated with a tilted roll off position of the table top.

Abstract: A dump trailer comprising a U-shaped trailer body having a bottom wall and opposing side walls. The trailer includes a curved front wall and a pivotable tailgate. The front wall is U-shaped when viewed from the top and angles upwardly and forwardly from the bottom wall. A support structure provided adjacent the front wall operatively engages hitch and lift assemblies. The support structure includes spaced-apart supports secured to the front wall; and spaced-apart horizontal beams secured to the supports. The beams extend through apertures in the front wall and into the compartment. This enables the trailer body to be lowered relative to the ground, thus lowering the center of gravity of the trailer. A wheel assembly mounts to the rear end of the trailer via a mounting plate curved complementary to the bottom wall. Cut-outs in the plate reduce the overall weight of the trailer.