Patent ID: 7028740

Claim:
An apparatus for providing a smoke barrier through a doorway comprising: a threshold below a door; a movable seal assembly coupled to the threshold; a slot in the movable seal assembly; a transfer bar coupled to the threshold, wherein the transfer bar moves horizontally as the door is closed; a pin coupled to the transfer bar and to the slot in the movable seal assembly; a transfer bar bracket coupled to the transfer bar, wherein the transfer bar bracket engages a bracket coupled to the door as the door is closing to create the horizontal movement of the transfer bar; a bottom seal coupled to the movable seal assembly; a side seal coupled to a side of a doorframe; and a top seal coupled to a top of the doorframe; wherein the movable seal assembly retracts towards the threshold as the door is opened; wherein when the door is closed a smoke and flame barrier is provided between a first area and a second area; wherein the slot in the movable seal assembly is at an angle greater than zero degrees from horizontal such that the horizontal movement of the transfer bar corresponds to the retraction of the movable seal assembly.