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Dusttight storage cabinet apparatus for use in clean rooms

  • US 4,867,629 A
  • Filed: 11/20/1987
  • Issued: 09/19/1989
  • Est. Priority Date: 11/20/1986
  • Status: Expired due to Fees
First Claim
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1. A dusttight storage cabinet apparatus for use in clean rooms, the storage cabinet apparatus being used for storing works which require a clean atmosphere, the storage cabinet apparatus comprising:

  • a housing having a front wall, the front wall having a first entrance for allowing works to come in and go out of the housing therethrough;

    air supply means for supplying an inside of the housing with clean air so that cleanliness of the housing is maintained at a same level or higher level than that of the clean rooms;

    a vertical rotation shaft rotatably disposed in the housing for turning about a longitudinal axis thereof;

    first drive means for turning the rotation shaft; and

    a rack assembly of a substantially cylindrical structure coaxially secured to the rotation shaft, the rack assembly having a plurality of compartments, opening radially outward, for storing the works therewithin, the compartments being partitioned off from one another so as to prevent cross-contamination by dust thereamong, each of the compartments having an air inlet in communication with the air supply means so that clean air is introduced into each of the compartments through a corresponding air inlet, the air inlet having an air filter for filtrating air passing through the air inlet, the compartments further having means for covering upper portions of the opening of the compartments so that each of lower portions of the openings serves as an air outlet for each of the compartments.

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