Locking hooks moving along a doors edge in opposite directions simultaneously

摘要

A blast resistant bin 1 has an opening selectively closed by a door 2. The door includes two pairs of movable locking hooks 28 which each selectively engage a rectangular channel 66 at the edges of the opening. The hooks and channels are parallel to the edge of the opening. A mechanism simultaneously moves one pair of hooks in one direction, and another pair in the opposite direction. Ideally the mechanism includes two racks and one pinion. A pair of hooks can be formed by the same sheet. The door preferably hinges relative to the structure. Each side of the opening can include channel and hook fastenings, the sides should be vertical.