Ventilation – Clean room
Reexamination Certificate
2005-07-12
2005-07-12
Wilson, Gregory (Department: 3749)
Ventilation
Clean room
C055S385200
Reexamination Certificate
active
06916238
ABSTRACT:
An area air delivery system for delivery of filtered air to an area occupiable by a user who can enter and leave the area, such as the head end of a bed, includes a canopy for at least partially surrounding the area to which air is to be supplied and defining the area which a user can enter and leave. An air diffuser positioned in the canopy includes a housing having an air impervious rear wall, air impervious side walls, and a perforated front wall forming a plenum in which a filter bag resides. The plenum is connected to a source of pressurized, preferably prefiltered, air so that pressurized air is supplied to the interior of the filter bag to diffuse through the filter bag into the plenum. Perforations in a predetermined area of the perforated front wall of the housing allow air to flow through the perforations and provide a substantially even flow of air from the perforated front wall of the diffuser into the canopy.
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Mallinckrodt Robert R.
Mallinckrodt & Mallinckrodt
Wilson Gregory
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