Abstract: A low profile, expandable, mobile rigid structure with unique a unique assembly and support system, that can easily be transported by an average sized vehicle. The structure features a central structure with a central roof section, a pair of endwall assemblies, and a central floor mounted to a base. The endwalls are two pieced having a bottom endwall panel and a top endwall panel. From the side of the central structure one or more side sections are retractable and expandable to increase the size of the floor space inside. The two pieced endwalls allow for compaction of the structure for travel by translating the lower portion of the endwall from supporting the upper portion. A two pieced door allows entry into the structure when it is expanded.

Abstract: A low profile, expandable, mobile rigid structure with unique a unique assembly and support system, that can easily be transported by an average sized vehicle. The structure features a central structure with a central roof section, a pair of endwall assemblies, and a central floor mounted to a base. The endwalls are two pieced having a bottom endwall panel and a top endwall panel. From the side of the central structure one or more side sections are retractable and expandable to increase the size of the floor space inside. The two pieced endwalls allow for compaction of the structure for travel by translating the lower portion of the endwall from supporting the upper portion. A two pieced door allows entry into the structure when it is expanded.

Abstract: A unit is described comprising a towable wheeled undercarriage upon which is mounted a unit having four independent rooms, each of which is collapsed for towing and which can be greatly extended in volume both horizontally and vertically for use. The four rooms have a common corner at the center of the unit. Each room includes a slide out section slidable beyond the sides of the undercarriage and an inner section that is attached to the floor. The slide out sections can be extended simultaneously until their roofs lock to a main roof over the fixed inner room sections. All roofs and their attached, telescoped, upper room walls can be raised simultaneously by a single drive device, such as a hydraulic cylinder, at the center of the main roof at the common corner of the rooms. With the rooms extended and the vertically extending rooms telescoped up, four large, private, independent, solid-walled, rooms with separate exterior doors are created. The undercarriage is mounted on four wheels on two axles.