US Patent 9050988 Collapsible cart

A cart including a platform assembly configured to move upon a ground surface, a mast pivotably connected to the platform assembly, the mast being moveable between an upright position and a collapsed position, at least one (1) pair of support arms pivotably connected to the mast, each support arm of the pair of support arms being moveable between a folded position and an unfolded position, and a locking mechanism configured to retain the mast in the upright position and release the mast into the collapsed position, wherein the pair of support arms is configured to support a bin when in the unfolded position.