Apparatus for simultaneously unlocking a door lock and a dead bo

Details Apparatus for simultaneously unlocking a door lock and a dead bo Apparatus for simultaneously unlocking a door lock and a dead bo

1997-03-31

1999-03-16

Boucher, Darnell M.

Locks

Special application

For closures

70417, 70451, 70452, 292 21, 292 34, E05B 5900

Patent

active

058815856

ABSTRACT:
An apparatus for simultaneously unlocking a locked dead bolt functioning as an auxiliary locking device when a lever of a cylinder door lock is turned from the interior side, in order to promptly and conveniently open a door on the inside. This is possible because an actuating body is installed on the inside for unlocking the dead bolt by rotation of a lever as well as making the lever restore.

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patent: 5513505 (1996-05-01), Dancs
patent: 5787741 (1998-08-01), Shen

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