Vertically movable security partition

Abstract

A mechanical curtain, upwardly movable into open position and downwardly movable into closed position, the curtain comprising: a) a plurality of similarly constructed trains of elongated members, the members of each train arranged to form a single pantograph forming longitudinally aligned rows of diamonds, the trains spaced laterally to form a curtain plane and oriented so that the diamonds of the pantographs operate in a plane at a 90° angle to that curtain plane, b) a plurality of bars secured in parallel spaced fashion to corresponding members in adjacent trains, perpendicular thereto, and, c) one or more cables to raise and lower the trains at a similar rate the pantographs being contracted when the curtain is in open position and the pantographs being elongated when the curtain is in closed position.

Dependencies are inferred from the claim text.