Patent ID: 6953074

Claim:
An antibandit shutter comprising a closed frame made up of a lower housing, an upper head and two side mullions defining a space which can be opened or closed wherein said opening or closing is effected by a plurality of elongate slats adapted to move from a retracted position within the confines of said lower housing to an expanded and raised position substantially closing off said space, wherein each of said plurality of slats comprises three pivot points each including a receiving channel, and wherein said slats are guided along the mullions of said frame by a raising means comprising a plurality of crossed first and second lever arms removably attached to said plurality of slats at said receiving channels by respective holding pins in the form of a lazy tongs mechanism, wherein said first lever arms are formed by the edges of said slats and said second lever arms are formed from slave levers such that each of said plurality of slats functions as an arm link as well, and wherein said plurality of slats progressively accelerate in a controlled and continuous manner toward the raised closed position as they move up the housing.