Patent ID: 7926226

Claim:
A prefabricated structure, comprising: a shell including a shell frame comprising: a floor support including: a pair of floor beams extending lengthwise along the shell, and a pair of slotted beams extending between and transverse to the floor beams, a roof support including: a first pair of roof beams extending lengthwise along the shell, and a second pair of roof beams extending between and transverse to the first pair of roof beams, and four columns extending between the floor support and the roof support and forming four corners of the shell frame; a flange extending from each of a pair of the columns; an extension deployable from the shell, the extension including an extension frame comprising: a floor support including: a main floor beam extending lengthwise along the extension, and a pair of extension floor beams extending from the main floor beam toward the shell and telescoping from corresponding slotted beams of the shell, a roof support including: a pair of roof beams extending lengthwise along the extension, and a pair of roof joists extending between and transverse to the first pair of roof beams, and four columns extending between the floor support and the roof support and forming four corners of the extension frame; an outer lip associated with a pair of columns of the extension farthest from the shell when the extension is deployed; and an inner lip associated with a pair of columns of the extension closest to the shell when the extension is deployed; wherein the slotted beams of the shell floor support each include a slot through which a column connected between an extension floor beam and an extension roof extends when the extension is seated within the shell; wherein the flange provides: a first pocket for receiving the outer lip when the extension is seated within the shell, the first pocket including a first gasket to seal the prefabricated structure when the outer lip is received within the first pocket; and a second pocket for receiving the inner lip when the extension is deployed from the shell, the second pocket including a second gasket to seal the prefabricated structure when the inner lip is received within the second pocket.