Patent ID: 8628059

Claim:
A caster assembly useable to transfer the weight of a frame having a plurality of legs from the ground to a caster, said caster assembly comprising: a leg support having a movable portion, where said movable portion is adapted to removably surround an accepted leg; a wheel; a mechanism to transfer the weight of the frame of the accepted leg from the ground to the wheel and a flat plate having a first end and a second end with a slot between the first end and the second end, where said first end includes a hinge connecting said first end of said plate to said leg support, and where said second end is attached to said wheel, such that said plate is rotatable in a plane perpendicular to the ground; and where said mechanism includes a lever having a cam surface and a handle, and a linkage pin connecting said lever to said leg support through said slot, where said cam surface contacts said plate at a position between said first end and said second end, and where the movement of the handle causes the caster to move in a plane perpendicular to the ground, such that the motion of the handle forces the leg support to engage an accepted leg and transfer the weight of the frame to the wheel.