Patent ID: 8069613
Filing Date: 2011-12-06
Classification: E05B,E05C,E06B

Abstract:
1. A mullion assembly for a double door comprising, in combination: a top mounting block adapted to be attached to a top beam of a door frame for a double door including first and second doors, with the door frame including two opposite side beams to which the first and second doors are pivotably mounted, with each of the first and second doors including a door lock having a latch; a bottom mounting block adapted to be mounted on a floor spaced from the top beam in a vertical direction, with the bottom mounting block aligned with the top mounting block in the vertical direction, with the bottom mounting block including a positioning hole and an anchor hole spaced from the positioning hole; a post including upper and lower ends spaced in the vertical direction, with the upper end of the post detachably engaged with the top mounting block, with the post further including two strikes adapted to respectively couple with the latches of the door locks when the first and second doors are in a closed state; a brace mounted to the lower end of the post; a positioning rod mounted to the brace and moveable in the vertical direction, with the positioning rod including upper and lower ends spaced in the vertical direction, with the lower end of the positioning rod being moveable between a locking position engaged in the positioning hole of the bottom mounting block and an unlocking position disengaged from the positioning hole of the bottom mounting block; a key cylinder mounted to the brace and including a key-operable actuating member, with the actuating member being operably connected to the positioning rod to move the positioning rod between the locking position and the unlocking position; an anchoring rod mounted to the brace and moveable in the vertical direction, with the anchoring rod including upper and lower ends spaced in the vertical direction, with the lower end of the anchoring rod being moveable between an anchoring position engaged in the anchor hole of the bottom mounting block and a non-anchoring position disengaged from the anchor hole of the bottom mounting block; and a stop member mounted to the brace and supporting the lower end of the anchoring rod in the non-anchoring position, with the stop member being made of material having a melting point lower than the post and the brace, and with the lower end of the anchoring rod moved from the non-anchoring position to the anchoring position engaged in the anchor hole of the bottom mounting block when the stop member melts.