Wheel Assembly for a Foldable Child Enclosure

A foldable structure, comprising:

• an upper assembly having a plurality of upper arms;
• a base assembly having a plurality of base legs;
• a side structure having a plurality of side posts connecting the upper assembly to the base assembly;
• a centrally-located hub assembly that causes the apparatus to move between a closed position and an open position;
• and
• a wheel assembly provided at each corner of the base assembly, each wheel assembly comprising:
• a wheel body having a central axis about which the wheel assembly rotates;
• at least one support surface adapted for supporting and guiding the wheel body on a surface;
• and
• at least one groove provided on opposing sides of the support surface,
• wherein the structure is movably supported on a surface by the plurality of wheel assemblies.

A foldable structure comprising:

• an enclosure defining a space within;
• a hub assembly centrally located at a bottom of the structure;
• and
• at least one wheel assembly provided at each corner of the foldable structure, wherein each wheel assembly comprises:
• a wheel body having a central axis about which the wheel assembly rotates;
• at least one support surface adapted for supporting and guiding the wheel body on a surface;
• and
• at least one groove provided on opposing sides of the support surface.