Abstract: A mobile aircraft hangar designed to provide a temporary enclosed working environment for workers performing aircraft maintenance, evaluation and support. The hangar includes a mobile housing assembly designed to enclose a section of the wing or fuselage of an aircraft. The housing assembly is assembled over a chassis with four wheels and steering mechanism that enables the housing assembly to be easily driven around an aircraft. The housing assembly includes one end wall and two vertical side walls, forming a three-sided enclosing structure. Formed on the housing assembly opposite the end wall is a main opening through which a section of the fuselage or wing may extend. The housing assembly also includes moveable floor panels that can be arranged in different configurations for working on different sections of the aircraft. Optional lift actuators are provided which enable the housing assembly to be raised or lowered.

Abstract: An expandable and collapsible mobile structure is provided that includes a central structure having a floor, a roof, front and rear end walls, and at least one longitudinal side wall that is movable out from the central structure. Foldable floor sections are hinged to a bottom edge of the longitudinal side wall and a bottom edge of the central structure, and foldable roof sections are hinged to a top edge of the longitudinal side wall and a top edge of the central structure. The foldable floor sections and foldable roof sections are adapted to be unfolded as the longitudinal side wall is moved out from the central structure. And front and rear side walls are hinged to respective outermost side edges of the front and rear end walls of the central structure. In an expansion operation, the front and rear side walls are adapted to be initially swung out perpendicular to the longitudinal side wall and positioned by ground supports.

Abstract: A lift for a travel trailer top is disclosed which includes novel corner posts or jacks each of which comprises a plurality of telescoping channel members for strength and rigidity and formed with integral marginal portions for receiving actuator push-pull elements.

Abstract: A removable and raisable roof attached to four upright supports is mounted on an open bed trailer. Two supports are located on the left and right corners of the forward edge of the trailer; the other two supports are similarly located at the rear corners of the trailer. No side supports are necessary. Using elevating means within the supports, which can operate independently or in tandem, the front and/or rear portions of the roof can be raised and lowered separately. Using external attachable fixtures and ground mounted supports, each of the roof supports can be lifted from their mounted position on the trailer bed and the trailer driven out from under the supports and roof assembly, converting a covered van to a fully open van. If a fully enclosed trailer is desired, then tarpaulin, or other readily removable wall materials can be suspended from the roof and attached to the trailer bed.