Ratcheting latch mechanism for a vertical rod door exit device

Closure fasteners – Trippers – Sliding bolt – swinging detent

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Details

292 92, 292153, E05B 6320

Patent

active

055314929

ABSTRACT:
A ratcheting latch mechanism for holding the vertical rods of a door exit device in the retracted position includes a chassis and a latch rod, with a plurality of ratchet notches formed therein, slidingly held by the chassis for motion between an extended and a retracted position. One end of the latch rod engages a socket in the door frame, the other is connected to a vertical rod extending from the exit device. A pawl is mounted on a release mechanism and engages the ratchet notches whenever the door is open to prevent the latch rod from moving back towards the extended position and damaging flooring or ceiling material.

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patent: 4384738 (1983-03-01), Floyd
patent: 4387917 (1983-06-01), Cocker
patent: 5139292 (1992-08-01), Beals

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