Patent ID: 7163586

Claim:
An apparatus for coating an item, said apparatus having a cleanroom side that is accessible from inside a cleanroom and a service side that is not accessible from inside the cleanroom, said apparatus comprising a vaporizer for vaporizing solid coating material, a pyrolysis furnace for heating the vaporized coating material to form a pyrolized gaseous coating material, and a deposition enclosure defining a deposition chamber for receiving an item to be coated, said deposition enclosure having an inlet for flow of pyrolized gaseous coating material from a source outside the deposition chamber into the deposition chamber, an outlet for flow of pyrolized gaseous coating material from the deposition chamber, an access door for accessing the deposition chamber from the cleanroom side of the apparatus, and a service door for accessing the deposition chamber from the service side of the apparatus, wherein said vaporizer, pyrolysis furnace, and service door are on the service side of the apparatus and wherein said apparatus is accessible through the access door from inside the cleanroom through an opening in a wall of the cleanroom, said apparatus further comprising a shroud distinct from said cleanroom wall at least partially surrounding the access door to isolate the access door from the service side of said apparatus and to allow isolated access to the access door and deposition chamber from inside the cleanroom.