Door for a shielded enclosure

Claim 1

A shielded door assembly for a shielded enclosure comprising: a door with at least a pair of shielded panels coupled together in a substantially parallel-spaced relationship such that said panels are free to move in a direction substantially normal to their surface; a pair of shielded guide walls in fixed substantially parallel-spaced relationship to each other; means for supporting said panels between said guide walls and including sliding means for allowing movement of said panels in a direction substantially parallel to said guide walls; openings in said guide walls directly across from each other in which the surface of said guide wall immediately surrounding said opening overlaps the surface of said panel providing an overlapping margin when said panel is positioned directly opposite said opening; and at least one inflatable bladder positioned between said panels in engaging relation to portions of opposing major surfaces of said panels, said portions being of substantially greater area than said overlapping margins, wherein upon inflation of said bladder, said panels engage said walls at said overlapping margins transmitting a uniform peripheral pressure per square inch to the seating surface of said abutting wall, said peripheral pressure being substantially greater than the internal pressure per square inch of said bladder.