Clean room cart

Claim 1

A cart for maintaining items used in a cleanroom at a predetermined cleanliness level, comprising: a cabinet having an internal cavity and opposed first and second internal walls; a shelf affixed horizontally within said cavity between said first and second walls to form top and lower compartments within said cabinet; a lower horizontal track affixed to said cabinet above said top compartment; a lower door slidably affixed within said lower track; an upper horizontal track affixed to said cabinet above said lower track; an upper door slidably affixed within said upper track, wherein said upper and lower doors are movable in a horizontal direction above said top compartment and said top compartment is substantially isolated from contamination when said upper door contacts said first wall and said lower door contacts said second wall or when said upper door contacts said second wall and said lower door contacts said first wall; top and bottom drawers slidably affixed within said cabinet; rotatable wheels for supporting said cabinet and to facilitate movement of said cabinet; and an opening adjacent to said lower compartment having an outer track and an inner track, said outer track including an outer door slidably affixed therein and said inner track including an inner door slidably affixed therein wherein said outer and inner doors are moveable to provide access to said lower compartment and to close said lower compartment.