US Patent 7980032 Construction unit mounting system

A clip is provided for affixing a construction unit to a building structure. The clip comprises: a generally planar middle portion, an exterior portion located on an exterior side of the middle portion and an interior portion located on an interior side of the middle portion; the exterior portion comprising a groove at an exterior end of the clip for receiving a construction unit flange, the groove having a generally U-shaped cross-section, the groove defined at least in part by a pair of generally parallel groove portions and a base portion connecting the groove portions at a base of the groove, the base of the groove spaced apart from an opening of the groove; the middle portion extending from an interior side of groove toward the interior portion; and the interior portion at an interior end of the clip, the interior portion extending from the middle portion at an obtuse angle to define a fulcrum at a junction between the middle portion and the interior portion.