Systems and methods to retain and refeed door curtains

摘要

An example door includes first and second tracks. The example door includes a retainer borne by the first track and an alignment guide associated with the first track. The example door also includes a curtain extending laterally between the first and second tracks. The curtain has a leading edge selectively movable between a closed position and an open position. The example door includes a primary projection borne by the curtain that is in guiding engagement with the retainer within the first track. The primary projection is dislodged from the track when the curtain is in the breakaway state. The example door includes a secondary projection borne by the curtain and arranged to travel outside of the alignment guide when the leading edge is traveling between the open position and the closed position.

主权项

1. A door for selectively blocking and unblocking a doorway of a wall, the door comprising:
a first track; a second track; a retainer to be borne by the first track; an alignment guide associated with the first track, the alignment guide to be positioned above the retainer; a curtain to extend laterally between the first track and the second track, the curtain having a leading edge selectively movable between a closed position and an open position, the door blocking the doorway when the leading edge is at the closed position, the door unblocking the doorway when the leading edge is at the open position, the curtain being selectively movable between a breakaway state and a normal state; a primary projection to be borne by the curtain, the primary projection to be in guiding engagement with the retainer within the first track when the leading edge is at the closed position while the curtain is in the normal state, the primary projection to be dislodged from the first track when the curtain is in the breakaway state; and a secondary projection to be borne by the curtain, the secondary projection arranged to travel outside of the alignment guide when the leading edge is traveling between the open position and the closed position while the curtain is in the normal state, wherein the secondary projection is confined laterally by the alignment guide when the leading edge is at the open position while the curtain is in the normal state.