A trailer includes a housing including an internal frame and an external frame. The external frame is coupled to the internal frame. In certain embodiments, the internal frame is positioned between interior panels and exterior panels of the housing. In certain embodiments, the external frame is spaced from exterior panels.

A cylindrical cargo container is formed of longitudinal, extruded arcuate panels joined pairwise at abutting edges to form a cylindrical tube. The container is mountable on a separate wheeled chassis to form a semi-trailer or railcar, or a chassis integral with a truck. The container may be substantially smooth on inner and outer surfaces, to provide optimal aerodynamics and freedom of motion of cargo within the container. The panels may have inner and outer skins bridged by multiple webs. Such structure may provide protection from punctures to the outer or inner skins. The container is useful to transport waste including municipal or industrial waste, and may be part of a tipper trailer. The container, trailer, truck, or railcar may be used with a compactor for compacting the waste within the container.

A cylindrical cargo container is formed of longitudinal, extruded arcuate panels joined pairwise at abutting edges to form a cylindrical tube. The container is mountable on a separate wheeled chassis to form a semi-trailer or railcar, or a chassis integral with a truck. The container may be substantially smooth on inner and outer surfaces, to provide optimal aerodynamics and freedom of motion of cargo within the container. The panels may have inner and outer skins bridged by multiple webs. Such structure may provide protection from punctures to the outer or inner skins. The container is useful to transport waste including municipal or industrial waste, and may be part of a tipper trailer. The container, trailer, truck, or railcar may be used with a compactor for compacting the waste within the container.

A roofing material bundle transport trailer includes a steering assembly and a pair of transport wheels movably supporting a frame upon a support surface. An inner end of a brake pedal grips one of a plurality of frame rollers rotatably mounted to the frame spaced from each other along a longitudinal axis. The brake pedal can be moved by pivoting a handle relative to the frame for sliding a locking pin extending through the brake pedal. A ramp is pivotably mounted to the frame between an unloading position extending to the support surface and an upright position extending away from the support surface and being removably held by a pair of locking plates pivotably mounted to the frame. Rollers are rotatably mounted to the ramp and aligned with the frame rollers.

A cart for transport and storage of items, including odd-size or over-size luggage of airline passengers, comprises a chassis comprising a plurality of wheels, and a storage section comprising at least one shelf. A drawer is provided below the storage section, the drawer comprising a compartment, which is inaccessible when the drawer is in a closed state, in which the drawer is overlapped by a bottom portion of the storage section. The compartment is accessible when the drawer is in an open state, in which the drawer is extracted from and extends beyond the bottom portion of the storage section.

A cart for transport and storage of items, including odd-size or over-size luggage of airline passengers, comprises a chassis comprising a plurality of wheels, and a storage section comprising at least one shelf. A drawer is provided below the storage section, the drawer comprising a compartment, which is inaccessible when the drawer is in a closed state, in which the drawer is overlapped by a bottom portion of the storage section. The compartment is accessible when the drawer is in an open state, in which the drawer is extracted from and extends beyond the bottom portion of the storage section.

A configurable trailer system which includes a chassis supported by one or more axles and any combination of an enclosed trailer, a camper, a livestock trailer, a dump bed and an open-sided trailer. The chassis includes a support surface and, at corners of the support surface, a plurality of locks. Each of the enclosed trailer, camper, livestock trailer, dump bed and open-sided trailer includes a plurality of corner castings configured to selectively and securely couple with the locks. A method for configuring the trailer system includes placing a first one of an enclosed trailer, a camper, a livestock trailer, a dump bed and an open-sided trailer on the chassis and locking to the chassis by engaging the locks with corner castings provided to corners of the first one of the enclosed trailer, camper, livestock trailer, dump bed and open-sided trailer.

A configurable trailer system which includes a chassis supported by one or more axles and any combination of an enclosed trailer, a camper, a livestock trailer, a dump bed and an open-sided trailer. The chassis includes a support surface and, at corners of the support surface, a plurality of locks. Each of the enclosed trailer, camper, livestock trailer, dump bed and open-sided trailer includes a plurality of corner castings configured to selectively and securely couple with the locks. A method for configuring the trailer system includes placing a first one of an enclosed trailer, a camper, a livestock trailer, a dump bed and an open-sided trailer on the chassis and locking to the chassis by engaging the locks with corner castings provided to corners of the first one of the enclosed trailer, camper, livestock trailer, dump bed and open-sided trailer.

A hauling and spreading trailer assembly for spreading loose material includes a trailer, which has a tongue that is engageable to a hitch of a tow vehicle. The trailer comprises a fixed bottom in which a plurality of apertures is positioned. A plurality of sidewalls extends substantially perpendicularly from the fixed bottom. A false bottom is slidably engaged to the trailer so that the false bottom is selectively positionable in first and second positions in which at least one of the apertures is at least partially open and the apertures are closed, respectively. A load of flowable material is positionable in the trailer with the false bottom in the second position. The false bottom can be selectively slid to the first position to dispense the flowable material through the at least one aperture, thereby allowing the flowable material to be spread at the trailer is towed.

A mobile power supply housed within a wheeled trailer which can be towed to various locations, particularly remote locations, for providing electrical power as needed for operating equipment or for charging of batteries or other electrical supply devices at such remote locations. The apparatus includes a unique trailer design including venting means for preventing the accumulation of hydrogen normally associated with high power battery operation, particularly charging thereof and therewith, by monitoring hydrogen at all times within the trailer interior and selectively passively and actively venting the interior environment when hydrogen levels are high or whenever necessary. A unique roof design is included for gathering hydrogen near the upper portion of the interior roof construction adjacent to a venting outlet to facilitate expelling thereof.