| 摘要 |
<p>A mullion assembly (10) mountable in a door frame (12) includes a bottom fitting (20) attached to a floor (14) and a top fitting (18) attached to the door frame (12) above the bottom fitting (20). The top fitting (18) supports a bolt engagement assembly (33) for engaging a lock assembly (22) positioned in a mullion cavity (17) of a mullion (16). The lock assembly (22) has a bolt (28) extendable from the mullion cavity (17) to engage the bolt engagement assembly (33) supported by the top fitting and hold the mullion in a fixed position. Retraction of the bolt (28) is controlled by a key lock assembly (22) that allows controlled access disengagement of the bolt from the bolt engagement assembly, followed by pivoting movement of the mullion (16) away from its upright position in the door frame (12).</p> |
