Patent ID: 8381330

Claim:
An ultra-low patient bed comprising: a frame supported by front and rear legs, the front and rear legs having an upper end and a lower end, the front and rear legs movable independently to raise and lower the frame; a caster support member having a longitudinally extending portion pivotally connected to the lower end of each leg; a caster assembly connected to each caster support member, the caster assembly having a substantially vertical orientation that allows the caster to swivel in response to directional changes of the bed; a constraint structure configured to maintain the substantially vertical orientation of the caster assembly when the bed is horizontal at all height positions of the bed; a leg brace wherein the frame, the leg, and the leg brace are pivotally connected to one another at three points which define an isosceles triangle, the isosceles triangle having an apex where the leg brace is pivotally connected to the leg, and wherein the shape of the isosceles triangle is preserved during height adjustment of the bed.