The present invention concerns a housing (1) for the transportation of a cargo, such as truck trailers, housings mounted on the chassis of a truck, or shipping containers. The housing of the present invention comprises: (a) walls (1R) defining a closed inner space (1i), (b) an opening (2) provided in one of the walls, and further comprises a rigid door comprising one or more rigid panels (3) which are movable to seal or unseal said opening (2); (c) a flexible fast door comprising a motorized driving mechanism (10) suitable for moving a leading edge (4L) of a flexible shutter (4), wherein the flexible shutter (4) comprises two lateral edges engaged in parallel guiding rails (7) fixed to two parallel and opposite edges of the opening (2), wherein the rigid panel (3) and/or the parallel edge of the opening (2) is provided with a groove to accommodate the guiding rails (7).

The present invention concerns a housing (1) for the transportation of a cargo, such as truck trailers, housings mounted on the chassis of a truck, or shipping containers. The housing of the present invention comprises: (a) walls (1R) defining a closed inner space (1i), (b) an opening (2) provided in one of the walls, and further comprises a rigid door comprising one or more rigid panels (3) which are movable to seal or unseal said opening (2); (c) a flexible fast door comprising a motorized driving mechanism (10) suitable for moving a leading edge (4L) of a flexible shutter (4), wherein the flexible shutter (4) comprises two lateral edges engaged in parallel guiding rails (7) fixed to two parallel and opposite edges of the opening (2), wherein the rigid panel (3) and/or the parallel edge of the opening (2) is provided with a groove to accommodate the guiding rails (7).

A height-adjustable enclosed semitrailer having a plurality of adjustable vertical supports for raising and lowering the roof of an enclosure, the enclosure comprising a plurality an overhanging upper body in some embodiments, and a retractable rearward door adapted to retract upwardly into a spool affixed to the roof.

A construction machine is provided that has an operating platform, an access for entering the operating platform, a roof and an access control. The roof is disposed on a height-adjustable rack structure that can be actuated manually or by means of a drive in order to set the roof from an upper operating position to a lower transport position and vice versa. In this process, the access protection is moved from a storage position to a functional position in which the access to the operating platform is blocked by the access control.

An extensible trailer has a rear frame supporting a front cargo deck, and a front frame supporting a front cargo deck. The rear frame has a yoke fixed to it for the front frame to slide in and out of, between collapsed and extended extremes. When collapsing the trailer, the front frame slides into the yoke as the front cargo deck rides up over a front edge of the rear cargo deck, until it lands on top of the rear cargo deck, where it stays all the while the trailer is in the collapsed position. When extending the trailer, the front frame slides out from the yoke as the front cargo deck slides back over the rear cargo deck's front edge, until it lands on top of the front frame, where it stays all the while the trailer is in the extended position.

An extensible trailer has a rear frame supporting a front cargo deck, and a front frame supporting a front cargo deck. The rear frame has a yoke fixed to it for the front frame to slide in and out of, between collapsed and extended extremes. When collapsing the trailer, the front frame slides into the yoke as the front cargo deck rides up over a front edge of the rear cargo deck, until it lands on top of the rear cargo deck, where it stays all the while the trailer is in the collapsed position. When extending the trailer, the front frame slides out from the yoke as the front cargo deck slides back over the rear cargo deck's front edge, until it lands on top of the front frame, where it stays all the while the trailer is in the extended position.

A modular roll down airflow control apparatus for use in typically refrigerated and insulated truck or transport vehicle boxes. The modular roll down airflow control apparatus includes a curtain assembly, a mandrel assembly (upon which the curtain assembly may be wound under spring bias), a pair of brackets (coupled to a wall near a ceiling of a truck box or cargo compartment that support the mandrel assembly), locking brackets (coupled to a wall near a floor of a truck box or cargo compartment that hold the curtain assembly down by engaging rods disposed in the curtain at intervals), and a plurality of edging seals (that may be coupled to the side walls of the cargo compartment and the curtain edges press against to form a seal). Air pressure in the cargo box typically acts to advantageously press the curtain edges against the edging seals forming a seal to prevent the escape of cold air and maintain a refrigerated space in the cargo compartment.

An opening and closing mechanism for a roll-up cargo door for a truck is intended to decrease injuries to the people who load and unload items from box trucks and semi-trailers. The mechanism allows the user to open and close the overhead roll-up door of these trucks while standing firmly and safely on the ground at the rear corner of the truck. The door opening and closing mechanism is in the form of a loop of material that is attached to a lower portion of the roll-up door and a guide disposed near the top of the door frame. The loop includes an indicator that shows the user which side of the loop is to be pulled down depending on the position of the door. The mechanism can be retrofit onto existing truck frames.

An opening and closing mechanism for a roll-up cargo door for a truck is intended to decrease injuries to the people who load and unload items from box trucks and semi-trailers. The mechanism allows the user to open and close the overhead roll-up door of these trucks while standing firmly and safely on the ground at the rear corner of the truck. The door opening and closing mechanism is in the form of a loop of material that is attached to a lower portion of the roll-up door and a guide disposed near the top of the door frame. The loop includes an indicator that shows the user which side of the loop is to be pulled down depending on the position of the door. The mechanism can be retrofit onto existing truck frames.

An opening and closing mechanism for a roll-up cargo door for a truck is intended to decrease injuries to the people who load and unload items from box trucks and semi-trailers. The mechanism allows the user to open and close the overhead roll-up door of these trucks while standing firmly and safely on the ground at the rear corner of the truck. The door opening and closing mechanism is in the form of a loop of material that is attached to a lower portion of the roll-up door and a guide disposed near the top of the door frame. The loop is disposed along one of the vertical frame members of the door so that it is out of the way of the cargo hold when the door is open.