Wheel apparatus

A mobile support structure for a display device comprising:

• a cross bar having a first end and a second end;
• a display mounted on said cross bar;
• a first pair of legs for supporting said display;
• a first coupling defining a first transverse cavity and a first pair of axial cavities, said first transverse cavity receiving said first end of said cross bar and each of said first pair of axial cavities receiving an end of one of said first pair of legs;
• a second pair of legs for supporting said display;
• a second coupling defining a second transverse cavity and a second pair of axial cavities, said second transverse cavity receiving said second end of said cross bar and each of said second pair of axial cavities receiving an end of one of said second pair of legs;
• and
• a wheel coupling including a wheel and being engaged with at least one of said first coupling and said second coupling such that when in a stationary position, said wheel does not contact a ground surface and when in a tilted, moving position, said wheel contacts said ground surface for rolling said display from a first location to a second location.