Isolation structure for contamination sensitive items

Receptacles – Closures – Having inflatable gasket or packing

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F16L 5500

Patent

active

052715167

ABSTRACT:
A reusable isolation structure features an easily cleanable shell having viewing windows formed therein, each protected by a framing ridge or a recess integrally formed in the shell provides protection of contents from contamination, impact, vibration and tampering. Framing ridges or recesses also facilitate stacking of shells. The closure member opening of the shell includes a groove formed around the periphery thereof and is preferably not more than slightly smaller than an interior cross-section of the shell. A door of the isolation structure is dimensioned to fit within the closure member opening and has a resilient seal clamped to the periphery of a backbone by front and rear plates. The front and rear plates cooperate with grooves formed in the backbone to define a preferred form of manifold for coupling pressure or a vacuum to the interior of the resilient seal whereby the resilient seal may be collapsed to allow removal of the door or allowed to expand or pressurized to provide secure closure. Filters and vapor and moisture drains are carried by the door structure. The door also provides a smooth interior surface of the isolation structure of closely controlled and accurately repeatable dimensions. A vacuum plate for handling the door simultaneously provides for evacuation and controlled collapse of the resilient seal as well as containment of contamination of the exterior thereof.

REFERENCES:
patent: 2530160 (1950-11-01), Finley
patent: 3223276 (1965-12-01), Gebhardt et al.
patent: 3325042 (1967-06-01), Brown
patent: 3371986 (1968-03-01), Brown
patent: 3500584 (1970-03-01), Clery et al.
patent: 4335075 (1982-06-01), Kackos
patent: 4482076 (1984-11-01), Wentzell
patent: 4532970 (1985-08-01), Tullis et al.
patent: 4724874 (1988-02-01), Parikh et al.

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