Patent ID: 6383242
Filing Date: 2002-05-07
Classification: B01D,Y10S

Abstract:
A mobile enclosure unit, comprising:a vertical, wheeled frame assembly having an open upper end and a lower wall, the frame assembly being adjustable in height so that the open upper end can be positioned in contact with a ceiling to surround an area of the ceiling to be worked on; a pliable cover sleeve surrounding the frame assembly to form a chamber within the frame assembly having an open upper end to allow a worker in the chamber to access the ceiling area above the open end of the frame assembly, the sleeve extending from the lower wall to the upper end of the frame; an exhaust system mounted in the frame inside the sleeve for drawing in air from the chamber, filtering debris from the air, and exhausting filtered air from the chamber, whereby a negative air pressure is created within the chamber; and a rectangular, horizontal frame secured to the upper end of the frame assembly for defining the open upper end of the assembly, the frame being adjustable between a predetermined minimum width and a predetermined maximum width for controlling the size of the upper end opening of the frame assembly.