Exit device having length adjustment means for its concealed ver

Details Exit device having length adjustment means for its concealed ver Exit device having length adjustment means for its concealed ver

1988-02-19

1989-11-21

Smith, Gary L.

Closure fasteners

Bolts

Emergency operating means

292DIG60, 403 59, 403118, 403381, 74 99A, 74110, E05C 900

Patent

active

048817651

ABSTRACT:
The vertical slide in the latch linkage of an exit device is coupled for vertical movement together with a channel inside the door stile. The channel holds a pair of blocks having inclined surfaces held in touching relation and relatively slideable. The vertical latch-operating rod is attached to the first of the blocks and the other block is secured to the channel by a horizontally disposed threaded adjusting element. The side walls of the channel restrict the first of the blocks from lateral but not vertical movement. The other block is restricted from lateral movement only by the threaded element, and turning the threaded element moves that block from side to side in the channel to raise or lower the first block as the inclined surfaces slide. This changes the effective length of the rod. The turning of the threaded element may be done from the outside of the door through an access hole.

REFERENCES:
patent: 834716 (1906-10-01), Flanders
patent: 1033151 (1912-07-01), Butler
patent: 1390519 (1921-09-01), Evans
patent: 1691655 (1928-11-01), Hopkins
patent: 1721489 (1929-07-01), Prinzler
patent: 2887336 (1957-05-01), Meyer
patent: 3633389 (1972-01-01), Horgan, Jr.
patent: 3660940 (1972-05-01), Tavano
patent: 3819213 (1974-06-01), Vanderburgh
patent: 4158463 (1979-06-01), Henrichs
patent: 4598939 (1986-07-01), Krupicka et al.
patent: 4601499 (1986-07-01), Kim

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