Abstract: A vehicle mounted cargo unit having a pair of rear jack assemblies employed to tie the cargo unit to a bed of the vehicle on which it is mounted and to aid in the support of the cargo unit when removed from the vehicle. The cargo unit has a generally rectangular box shape enclosure with a pair of side walls and a bottom wall of a generally U-shape in transverse cross section. Included in the bottom wall are a base section and a pair of upright side sections, each of which has an upper outwardly projected lateral section secured at an outer end to an adjacent side wall to form a channel portion for receiving a side portion of the vehicle bed. The jack assemblies are mounted in an upright position in the rear of the channel portions such that they are extendible to support the rear of the cargo unit and are retractible into engagement with the vehicle to secure the cargo unit thereon for transport.

Abstract: A jack and tie-down system for the front end of a vehicle mounted box shaped cargo unit having a front wall and a transversely extended chamber means secured to the inner surface thereof. A pair of front jack assemblies each includes a horizontal support structure guidably mounted within the chamber means for movement from a storage position in the chamber means to an operating position projected outwardly from an associated end of the chamber means. A linearly extendible and retractible jack unit is releasably mounted at the outer end of each projected support member for adjustment into and out of ground engagement. When the cargo unit is to be transported the jack units are retracted and detached from their associated support members. Each jack unit is then received within a support member, and the resulting assembly stored in the chamber means within the transverse confines of the cargo unit.