A trailer jack support apparatus configured to support trailer hitches includes a monolithic block having six sides with the trailer jack support being in the shape of a square frustrum or trapezoid. The top of the trailer jack support includes a number of protrusions which extend from the trailer jack support. Further, the top side has a recess and a void located at the bottom of the recess. In addition, the bottom of the trailer jack support includes numerous recesses defined therein and may engage with the protrusions extending from the top of a second trailer jack support.

A trailer restraining device comprising a portable frame having mounted thereto a tail hook and a king pin receiver that includes at least one of a receiver hydraulic cylinder, a receiver pneumatic cylinder, a receiver electric actuator, and a receive winch.

A portable towing system for a motorcycle or similar vehicle, such as a trike, the frame of which can be lowered to ground level to facilitate loading of the motorcycle or similar vehicle by pushing or riding the vehicle onto the frame without risk of the vehicle falling off the sides of a steeply inclined ramp. The towing system may be assembled, raised, lowered, and disassembled by a single person, if desired. The towing system also comprises a cargo box to store the frame when disassembled. The raising and lowering of the frame is effected by a lifting and lowering mechanism connected with the wheel assemblies, and at least three heights of the frame are achieved by rotation of the lifting and lowering mechanism of the wheel assemblies. The cargo box and the frame can use the wheel assemblies interchangeably.

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

A kingpin stabilizer having a kingpin-retaining bracket having a base plate and upwardly extending walls along at least two sides of the base plate. The upwardly extending walls and the base plate forming a receiving cavity with the upwardly extending walls spaced apart to fit said kingpin therebetween. At least one upwardly extending wall has a pin retainer. The stabilizer includes three telescoping legs extending from the pin-retaining bracket forming a tripod.

A kingpin stabilizer having a kingpin-retaining bracket having a base plate and upwardly extending walls along at least two sides of the base plate. The upwardly extending walls and the base plate forming a receiving cavity with the upwardly extending walls spaced apart to fit said kingpin therebetween. At least one upwardly extending wall has a pin retainer. The stabilizer includes three telescoping legs extending from the pin-retaining bracket forming a tripod.

Example techniques have been presented for providing tracked vehicles with deployable towing wheels. Such techniques involve a track vehicle having a vehicle body, a track coupled to the vehicle body, and a wheel assembly coupled to the vehicle body. The wheel assembly includes a wheel and is operable to assume a towing position in which at least a portion of the wheel extends below the track and enables the tracked vehicle to be towed on the wheel without the track making ground contact.

The present disclosure relates to shipping and storage containers. Specifically, the present disclosure relates to shipping and storage containers, which are traditionally stationary, converted to easily-portable containers. More specifically, the portable containers include a deployable/retractable landing/moving apparatus, a removable tow bar assembly, and leveling support systems. The portable containers can have many uses including as temporary to permanent housing, office space, and school rooms, or to house equipment for use in mobile telecommunication networks and systems, including cellular towers that can be set-up in both permanent and temporary locations.

The present disclosure relates to shipping and storage containers. Specifically, the present disclosure relates to shipping and storage containers, which are traditionally stationary, converted to easily-portable containers. More specifically, the portable containers include a deployable/retractable landing/moving apparatus, a removable tow bar assembly, and leveling support systems. The portable containers can have many uses including as temporary to permanent housing, office space, and school rooms, or to house equipment for use in mobile telecommunication networks and systems, including cellular towers that can be set-up in both permanent and temporary locations.

A method and system for supporting trailers carrying mechanical equipment, such as hydraulic fracturing oil and gas equipment are provided. One, two or at least three supports extend from the trailer toward ground and are configured to partially support the trailer when in contact with ground, in addition to any axle groups that exist on the trailer. At least one device configured to absorb, damp, or both absorb and damp vibrations from the mechanical equipment during operation is provided. Each device is operatively coupled to, for example integrated with, a corresponding one of the support structures.