Emergency door with retractable nose piece, interiorly mounted o

Details Emergency door with retractable nose piece, interiorly mounted o Emergency door with retractable nose piece, interiorly mounted o

1994-04-28

1997-06-17

Dorner, Kenneth J.

Movable or removable closures

Thermal releaser or actuator

Fusible closure latch or retainer

292 21, 292DIG66, E05F 1520

Patent

active

056386397

ABSTRACT:
An emergency door, such as a fire door which closes automatically in case of fire, includes a nose piece which moves to an extended position when the door is closed to provide a seal of the gap otherwise present between the forward edge of the door and an adjacent door frame or door, and generally also interlocks with a mating portion of the adjacent frame or door. An addition latching element may be provided to extend from the top edge of the door and be received in a keeper when the door is closed. Door operating hardware, preferably all mounted interiorly of the door except for a push bar on one side of the door and a door handle on the other side, is operable to retract the nose piece and latching element when it is desired to open the door. The nose piece and latching element are held in retracted position when the door is open. A release device releases the latching element and nose piece to extend to extended position when the door is moved to a closed position. The release device is easily operable so the doors are reliably closeable by a door closer device. The doors may be hinged by a hinge piece received in respective door and jamb receiving channels, and if so, the hinge piece is supported by a block at the bottom of the jamb channel and the door is supported by a block at the top of the door channel.

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