Importance

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Abstract

A closable passage arrangement interconnecting two spaces and comprising a closure unit having two passage openings each provided with a door or the like lockable with a locking bolt mechanism. Each door connects the closure unit to a different one of the two spaces. The doors are provided with driving means for their operation. The driving means comprises, for each door, a power transmission unit arranged to influence separately a mechanism for turning the door and a mechanism for operating the locking bolt mechanism of the door. The power transmission units of the doors are interconnected by means of a common shaft. The power transmission units include a pin-and-fork mechanism, wherein a rotatable power transmission member provided with crank pins or the like cooperates with a number of fork members. The driving means comprises a plurality of door operating stations each including a door operating member being directly or by means of the common shaft connected to the power transmission units. The driving means includes mechanical means positively guiding the functions of the driving means during opening and closing of any of said doors and means mechanically guiding these functions to take part only in one given order. The functions are obtainable from any of said door operating stations, whereby, when operating one door, the operating mechanisms of the other door is mechanically locked in its closed position.

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First Claim