A vehicle body. The vehicle body comprises a fluid transfer system integrated within the vehicle body. The fluid transfer system comprises a fluid evacuation system comprising a first fluid storage container, a fluid refill system comprising a second fluid storage container, a sensing system coupled to the fluid evacuation system and the fluid refill system, and a control circuit coupled to the sensing system, the fluid evacuation system and the fluid refill system. The control circuit is configured to (1) determine an amount of a first fluid in the first fluid storage container based on a first signal from the sensing system, and (2) determine an amount of a second fluid in the second fluid storage container based on a second signal from the sensing system.

A pneumatic tank trailer includes a carriage and a tank supported on the trailer that can selectively discharge fluidizable material through hoppers of the tank. A nose portion of the trailer has a generally conical shape. The nose portion has a top that slopes downward and sides that taper inward as it extends forward. A cross-sectional center point of a front end of the nose portion is lower than a cross-sectional center point of a rear end of the nose portion along the height of the trailer. The length of the nose portion is at least 15% of the length of the trailer. Adjacent hoppers intersect at hopper crotches. The hopper crotches have short heights and the hoppers are arranged relatively close together.

A trailer configured to lower an overall center of gravity. The trailer comprises a tank, a wheel assembly, an upper body height and a trailer length. The tank comprises a cavity contained within a lower body, an upper body, a transitioning body, a front end and a rear end when the cavity within the trailer is filled with a liquid fluid, the liquid fluid is evenly distributed along the trailer length of the trailer since a diameter of the lower body, the upper body and the transitioning body are equal.

A device for storing cryogenic fluid including a sealed internal shell delimiting the storage volume for the cryogenic fluid, a thermal insulation layer disposed around the internal shell, and a sealed external shell disposed around the insulation layer. The space between the internal shell and the external shell being under vacuum, the external shell resting on the periphery of the thermal insulation layer, and the thermal insulation layer having an insulating material of the “pressure-responsive” type. Also including a protective shell disposed around the external shell, and at least one supporting component having an end connected rigidly to the internal shell and a second end rigidly connected to the protective shell such that such that the assembly having the internal shell. The external shell and the thermal insulation layer under vacuum is suspended in the protective shell via the at least one supporting component.

A tank trailer configured to lower an overall center of gravity. The trailer includes a tank, a wheel assembly, an upper body height and a trailer length. The tank includes a cavity contained within a lower body, an upper body, a transitioning body, a front end and a rear end when the cavity within the trailer is filled with a liquid fluid, the liquid fluid is evenly distributed along the trailer length of the trailer since a diameter of the lower body, the upper body and the transitioning body are equal. Other trailers are presented.

A fluid containment system comprises a frame, a tank, a rear suspension system, a front lifting assembly, a cooperative coupling mechanism adapted to couple the fluid containment system to a vehicle, and a rear lifting assembly. The front lifting assembly is adapted to lift the front of the tank. The rear lifting assembly is adapted to lift the rear of the tank. The fluid containment system comprises a working condition and a mobile condition. A lower portion of the frame rests on a surface when the mobile fluid containment system is in the working condition. The lower portion of the frame is elevated with respect to the surface when the mobile fluid containment system is in the mobile condition. The fluid containment system is adapted to be towed by the vehicle when the cooperative coupling mechanism is coupled to the vehicle and the fluid containment system is in the mobile condition.

A quasi-cylindrical cargo container is formed of a plurality of rigid, curved panels together forming first and second semi-cylindrical shells, and a plurality of rigid, flat extension panels bridging the first and second semi-cylindrical shells. A method of manufacturing the container includes forming the first and second semi-cylindrical shell from the curved panels, forming the quasi-cylindrical shell from the first and second semi-cylindrical shells and the flat extension panels, forming collars conformably encompassing the quasi-cylindrical shell, constricting the collars to compress joints formed at abutting edges of pairs of adjacent panels, rolling the shell and collars sequentially to bring the joints to a lower position, welding inside seams of the joints when at the lower position, removing the collars, rolling the shell sequentially to bring the joints to an upper position, and welding outside seams of the joints when at the upper position.

A trailer configured to lower an overall center of gravity thereof. The trailer comprises a tank, a wheel assembly, a height and a length. The tank comprises a cavity contained within a lower body, a tilted body, a front end and a rear end. The lower body comprises a lower body height, a lower body length, a lower body ground clearance and a lower center of gravity. The tilted body comprises a tilted body ground clearance, a tilted body length, the height and a tilted portion center of gravity. The tank comprises the length, a height equal to the height of the tilted body, and a ground clearance equal to the lower body ground clearance.

There is disclosed a service trailer which may be quickly deployed to a site to provide potable water, electricity, lighting and a storage of grey water.

A vacuum tank semi-trailer having a horizontal tank with front and rear tank heads. A front cantilevered frame is welded to the front tank head and has a fifth wheel hitch and a pair of landing legs fixed thereto. A rear cantilevered frame is welded to the rear tank head, and has an axle assembly sprung therefrom. A lower center of gravity is realized by keeping the front a rear frames smaller than the diameter of the tank. A fill pipe having an upwardly sloped portion to clear the axle assembly is coupled to the tank and presents a fill connection at the rear of the rear frame in a protected manner.