Patent attributes
A latch assembly (10) is mounted to a follower door (275) of a double door (257) and includes a latch (231) and a pressing board (453) pivotably received in a cutout (411) of the latch (231). When the follower door (275) moves from an open position to a closed position, a pressing side (457) of the pressing board (453) is pressed by a top beam (35) of a door frame (31). The pressing board (453) pivots and presses against a bottom face (413) of the cutout (411) of the latch (231), moving the latch (231) from an unlatching position to the latching position until the pressing side (457) of the pressing board (453) completely enters the cutout (411), and then a slant face (236) of the latch (231) presses against the door frame (31), causing movement of the latch (231) from the latching position to the unlatching position.